pintos-os.org Git - pspp/blob - src/ui/gui/pspp-sheet-view.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2011, 2012 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 /* gtktreeview.c
  18  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
  19  *
  20  * This library is free software; you can redistribute it and/or
  21  * modify it under the terms of the GNU Library General Public
  22  * License as published by the Free Software Foundation; either
  23  * version 2 of the License, or (at your option) any later version.
  24  *
  25  * This library is distributed in the hope that it will be useful,
  26  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  28  * Library General Public License for more details.
  29  *
  30  * You should have received a copy of the GNU Library General Public
  31  * License along with this library; if not, write to the
  32  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  33  * Boston, MA 02111-1307, USA.
  34  */
  35
  36 #include <config.h>
  37
  38 #include "ui/gui/pspp-sheet-private.h"
  39
  40 #include <gtk/gtk.h>
  41 #include <gdk/gdk.h>
  42 #include <gdk/gdkkeysyms.h>
  43 #include <string.h>
  44
  45 #include "ui/gui/psppire-marshal.h"
  46 #include "ui/gui/pspp-sheet-selection.h"
  47
  48 #define P_(STRING) STRING
  49 #define GTK_PARAM_READABLE G_PARAM_READABLE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB
  50 #define GTK_PARAM_READWRITE G_PARAM_READWRITE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB
  51
  52 /* Many keyboard shortcuts for Mac are the same as for X
  53  * except they use Command key instead of Control (e.g. Cut,
  54  * Copy, Paste). This symbol is for those simple cases. */
  55 #ifndef GDK_WINDOWING_QUARTZ
  56 #define GTK_DEFAULT_ACCEL_MOD_MASK GDK_CONTROL_MASK
  57 #else
  58 #define GTK_DEFAULT_ACCEL_MOD_MASK GDK_META_MASK
  59 #endif
  60
  61 #define PSPP_SHEET_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  62 #define PSPP_SHEET_VIEW_PRIORITY_SCROLL_SYNC (PSPP_SHEET_VIEW_PRIORITY_VALIDATE + 2)
  63 #define PSPP_SHEET_VIEW_TIME_MS_PER_IDLE 30
  64 #define SCROLL_EDGE_SIZE 15
  65 #define EXPANDER_EXTRA_PADDING 4
  66 #define PSPP_SHEET_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  67
  68 /* The "background" areas of all rows/cells add up to cover the entire tree.
  69  * The background includes all inter-row and inter-cell spacing.
  70  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  71  * i.e. just the cells, no spacing.
  72  */
  73
  74 #define BACKGROUND_HEIGHT(tree_view) (tree_view->priv->fixed_height)
  75 #define CELL_HEIGHT(tree_view, separator) ((BACKGROUND_HEIGHT (tree_view)) - (separator))
  76
  77 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  78  * vice versa.
  79  */
  80 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  81 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  82
  83 /* This is in bin_window coordinates */
  84 #define BACKGROUND_FIRST_PIXEL(tree_view,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, pspp_sheet_view_node_find_offset (tree_view, (node))))
  85 #define CELL_FIRST_PIXEL(tree_view,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,node) + separator/2)
  86
  87 #define ROW_HEIGHT(tree_view) \
  88   ((tree_view->priv->fixed_height > 0) ? (tree_view->priv->fixed_height) : (tree_view)->priv->expander_size)
  89
  90
  91 typedef struct _PsppSheetViewChild PsppSheetViewChild;
  92 struct _PsppSheetViewChild
  93 {
  94   GtkWidget *widget;
  95   gint x;
  96   gint y;
  97   gint width;
  98   gint height;
  99 };
 100
 101
 102 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 103 struct _TreeViewDragInfo
 104 {
 105   GdkModifierType start_button_mask;
 106   GtkTargetList *_unused_source_target_list;
 107   GdkDragAction source_actions;
 108
 109   GtkTargetList *_unused_dest_target_list;
 110
 111   guint source_set : 1;
 112   guint dest_set : 1;
 113 };
 114
 115
 116 /* Signals */
 117 enum
 118 {
 119   ROW_ACTIVATED,
 120   COLUMNS_CHANGED,
 121   CURSOR_CHANGED,
 122   MOVE_CURSOR,
 123   SELECT_ALL,
 124   UNSELECT_ALL,
 125   SELECT_CURSOR_ROW,
 126   TOGGLE_CURSOR_ROW,
 127   START_INTERACTIVE_SEARCH,
 128   LAST_SIGNAL
 129 };
 130
 131 /* Properties */
 132 enum {
 133   PROP_0,
 134   PROP_MODEL,
 135   PROP_HADJUSTMENT,
 136   PROP_VADJUSTMENT,
 137   PROP_HEADERS_VISIBLE,
 138   PROP_HEADERS_CLICKABLE,
 139   PROP_REORDERABLE,
 140   PROP_RULES_HINT,
 141   PROP_ENABLE_SEARCH,
 142   PROP_SEARCH_COLUMN,
 143   PROP_HOVER_SELECTION,
 144   PROP_RUBBER_BANDING,
 145   PROP_ENABLE_GRID_LINES,
 146   PROP_TOOLTIP_COLUMN,
 147   PROP_SPECIAL_CELLS,
 148   PROP_FIXED_HEIGHT,
 149   PROP_FIXED_HEIGHT_SET
 150 };
 151
 152 /* object signals */
 153 static void     pspp_sheet_view_finalize             (GObject          *object);
 154 static void     pspp_sheet_view_set_property         (GObject         *object,
 155                                                     guint            prop_id,
 156                                                     const GValue    *value,
 157                                                     GParamSpec      *pspec);
 158 static void     pspp_sheet_view_get_property         (GObject         *object,
 159                                                     guint            prop_id,
 160                                                     GValue          *value,
 161                                                     GParamSpec      *pspec);
 162
 163 static void     pspp_sheet_view_dispose              (GObject        *object);
 164
 165 /* gtkwidget signals */
 166 static void     pspp_sheet_view_realize              (GtkWidget        *widget);
 167 static void     pspp_sheet_view_unrealize            (GtkWidget        *widget);
 168 static void     pspp_sheet_view_map                  (GtkWidget        *widget);
 169 static void     pspp_sheet_view_size_request         (GtkWidget        *widget,
 170                                                     GtkRequisition   *requisition);
 171 static void     pspp_sheet_view_size_allocate        (GtkWidget        *widget,
 172                                                     GtkAllocation    *allocation);
 173 static gboolean pspp_sheet_view_expose               (GtkWidget        *widget,
 174                                                     GdkEventExpose   *event);
 175 static gboolean pspp_sheet_view_key_press            (GtkWidget        *widget,
 176                                                     GdkEventKey      *event);
 177 static gboolean pspp_sheet_view_key_release          (GtkWidget        *widget,
 178                                                     GdkEventKey      *event);
 179 static gboolean pspp_sheet_view_motion               (GtkWidget        *widget,
 180                                                     GdkEventMotion   *event);
 181 static gboolean pspp_sheet_view_enter_notify         (GtkWidget        *widget,
 182                                                     GdkEventCrossing *event);
 183 static gboolean pspp_sheet_view_leave_notify         (GtkWidget        *widget,
 184                                                     GdkEventCrossing *event);
 185 static gboolean pspp_sheet_view_button_press         (GtkWidget        *widget,
 186                                                     GdkEventButton   *event);
 187 static gboolean pspp_sheet_view_button_release       (GtkWidget        *widget,
 188                                                     GdkEventButton   *event);
 189 static gboolean pspp_sheet_view_grab_broken          (GtkWidget          *widget,
 190                                                     GdkEventGrabBroken *event);
 191
 192 static void     pspp_sheet_view_set_focus_child      (GtkContainer     *container,
 193                                                     GtkWidget        *child);
 194 static gint     pspp_sheet_view_focus_out            (GtkWidget        *widget,
 195                                                     GdkEventFocus    *event);
 196 static gint     pspp_sheet_view_focus                (GtkWidget        *widget,
 197                                                     GtkDirectionType  direction);
 198 static void     pspp_sheet_view_grab_focus           (GtkWidget        *widget);
 199 static void     pspp_sheet_view_style_set            (GtkWidget        *widget,
 200                                                     GtkStyle         *previous_style);
 201 static void     pspp_sheet_view_grab_notify          (GtkWidget        *widget,
 202                                                     gboolean          was_grabbed);
 203 static void     pspp_sheet_view_state_changed        (GtkWidget        *widget,
 204                                                     GtkStateType      previous_state);
 205
 206 /* container signals */
 207 static void     pspp_sheet_view_remove               (GtkContainer     *container,
 208                                                     GtkWidget        *widget);
 209 static void     pspp_sheet_view_forall               (GtkContainer     *container,
 210                                                     gboolean          include_internals,
 211                                                     GtkCallback       callback,
 212                                                     gpointer          callback_data);
 213
 214 /* Source side drag signals */
 215 static void pspp_sheet_view_drag_begin       (GtkWidget        *widget,
 216                                             GdkDragContext   *context);
 217 static void pspp_sheet_view_drag_end         (GtkWidget        *widget,
 218                                             GdkDragContext   *context);
 219 static void pspp_sheet_view_drag_data_get    (GtkWidget        *widget,
 220                                             GdkDragContext   *context,
 221                                             GtkSelectionData *selection_data,
 222                                             guint             info,
 223                                             guint             time);
 224 static void pspp_sheet_view_drag_data_delete (GtkWidget        *widget,
 225                                             GdkDragContext   *context);
 226
 227 /* Target side drag signals */
 228 static void     pspp_sheet_view_drag_leave         (GtkWidget        *widget,
 229                                                   GdkDragContext   *context,
 230                                                   guint             time);
 231 static gboolean pspp_sheet_view_drag_motion        (GtkWidget        *widget,
 232                                                   GdkDragContext   *context,
 233                                                   gint              x,
 234                                                   gint              y,
 235                                                   guint             time);
 236 static gboolean pspp_sheet_view_drag_drop          (GtkWidget        *widget,
 237                                                   GdkDragContext   *context,
 238                                                   gint              x,
 239                                                   gint              y,
 240                                                   guint             time);
 241 static void     pspp_sheet_view_drag_data_received (GtkWidget        *widget,
 242                                                   GdkDragContext   *context,
 243                                                   gint              x,
 244                                                   gint              y,
 245                                                   GtkSelectionData *selection_data,
 246                                                   guint             info,
 247                                                   guint             time);
 248
 249 /* tree_model signals */
 250 static void pspp_sheet_view_set_adjustments                 (PsppSheetView     *tree_view,
 251                                                            GtkAdjustment   *hadj,
 252                                                            GtkAdjustment   *vadj);
 253 static gboolean pspp_sheet_view_real_move_cursor            (PsppSheetView     *tree_view,
 254                                                            GtkMovementStep  step,
 255                                                            gint             count);
 256 static gboolean pspp_sheet_view_real_select_all             (PsppSheetView     *tree_view);
 257 static gboolean pspp_sheet_view_real_unselect_all           (PsppSheetView     *tree_view);
 258 static gboolean pspp_sheet_view_real_select_cursor_row      (PsppSheetView     *tree_view,
 259                                                            gboolean         start_editing);
 260 static gboolean pspp_sheet_view_real_toggle_cursor_row      (PsppSheetView     *tree_view);
 261 static void pspp_sheet_view_row_changed                     (GtkTreeModel    *model,
 262                                                            GtkTreePath     *path,
 263                                                            GtkTreeIter     *iter,
 264                                                            gpointer         data);
 265 static void pspp_sheet_view_row_inserted                    (GtkTreeModel    *model,
 266                                                            GtkTreePath     *path,
 267                                                            GtkTreeIter     *iter,
 268                                                            gpointer         data);
 269 static void pspp_sheet_view_row_deleted                     (GtkTreeModel    *model,
 270                                                            GtkTreePath     *path,
 271                                                            gpointer         data);
 272 static void pspp_sheet_view_rows_reordered                  (GtkTreeModel    *model,
 273                                                            GtkTreePath     *parent,
 274                                                            GtkTreeIter     *iter,
 275                                                            gint            *new_order,
 276                                                            gpointer         data);
 277
 278 /* Incremental reflow */
 279 static gint validate_row             (PsppSheetView *tree_view,
 280                                           int node,
 281                                           GtkTreeIter *iter,
 282                                           GtkTreePath *path);
 283 static void     validate_visible_area    (PsppSheetView *tree_view);
 284 static gboolean validate_rows_handler    (PsppSheetView *tree_view);
 285 static gboolean presize_handler_callback (gpointer     data);
 286 static void     install_presize_handler  (PsppSheetView *tree_view);
 287 static void     install_scroll_sync_handler (PsppSheetView *tree_view);
 288 static void     pspp_sheet_view_set_top_row   (PsppSheetView *tree_view,
 289                                              GtkTreePath *path,
 290                                              gint         offset);
 291 static void     pspp_sheet_view_dy_to_top_row (PsppSheetView *tree_view);
 292 static void     pspp_sheet_view_top_row_to_dy (PsppSheetView *tree_view);
 293 static void     invalidate_empty_focus      (PsppSheetView *tree_view);
 294
 295 /* Internal functions */
 296 static void     pspp_sheet_view_add_move_binding               (GtkBindingSet      *binding_set,
 297                                                               guint               keyval,
 298                                                               guint               modmask,
 299                                                               gboolean            add_shifted_binding,
 300                                                               GtkMovementStep     step,
 301                                                               gint                count);
 302 static void     pspp_sheet_view_queue_draw_path                (PsppSheetView        *tree_view,
 303                                                               GtkTreePath        *path,
 304                                                               const GdkRectangle *clip_rect);
 305 static gint     pspp_sheet_view_new_column_width               (PsppSheetView        *tree_view,
 306                                                               gint                i,
 307                                                               gint               *x);
 308 static void     pspp_sheet_view_adjustment_changed             (GtkAdjustment      *adjustment,
 309                                                               PsppSheetView        *tree_view);
 310 static void     pspp_sheet_view_clamp_node_visible             (PsppSheetView        *tree_view,
 311                                                               int node);
 312 static void     pspp_sheet_view_clamp_column_visible           (PsppSheetView        *tree_view,
 313                                                               PsppSheetViewColumn  *column,
 314                                                               gboolean            focus_to_cell);
 315 static gboolean pspp_sheet_view_maybe_begin_dragging_row       (PsppSheetView        *tree_view,
 316                                                               GdkEventMotion     *event);
 317 static void     pspp_sheet_view_focus_to_cursor                (PsppSheetView        *tree_view);
 318 static gboolean pspp_sheet_view_move_cursor_up_down            (PsppSheetView        *tree_view,
 319                                                               gint                count);
 320 static void     pspp_sheet_view_move_cursor_page_up_down       (PsppSheetView        *tree_view,
 321                                                               gint                count);
 322 static void     pspp_sheet_view_move_cursor_left_right         (PsppSheetView        *tree_view,
 323                                                               gint                count);
 324 static void     pspp_sheet_view_move_cursor_tab                (PsppSheetView        *tree_view,
 325                                                               gint                count);
 326 static void     pspp_sheet_view_move_cursor_start_end          (PsppSheetView        *tree_view,
 327                                                               gint                count);
 328 static void     pspp_sheet_view_real_set_cursor                (PsppSheetView        *tree_view,
 329                                                               GtkTreePath        *path,
 330                                                               gboolean            clear_and_select,
 331                                                               gboolean            clamp_node);
 332 static gboolean pspp_sheet_view_has_special_cell               (PsppSheetView        *tree_view);
 333 static void     pspp_sheet_view_stop_rubber_band               (PsppSheetView        *tree_view);
 334 static void     update_prelight                              (PsppSheetView        *tree_view,
 335                                                               int                 x,
 336                                                               int                 y);
 337 static void initialize_fixed_height_mode (PsppSheetView *tree_view);
 338
 339 /* interactive search */
 340 static void     pspp_sheet_view_ensure_interactive_directory (PsppSheetView *tree_view);
 341 static void     pspp_sheet_view_search_dialog_hide     (GtkWidget        *search_dialog,
 342                                                          PsppSheetView      *tree_view);
 343 static void     pspp_sheet_view_search_position_func      (PsppSheetView      *tree_view,
 344                                                          GtkWidget        *search_dialog,
 345                                                          gpointer          user_data);
 346 static void     pspp_sheet_view_search_disable_popdown    (GtkEntry         *entry,
 347                                                          GtkMenu          *menu,
 348                                                          gpointer          data);
 349 static void     pspp_sheet_view_search_preedit_changed    (GtkIMContext     *im_context,
 350                                                          PsppSheetView      *tree_view);
 351 static void     pspp_sheet_view_search_activate           (GtkEntry         *entry,
 352                                                          PsppSheetView      *tree_view);
 353 static gboolean pspp_sheet_view_real_search_enable_popdown(gpointer          data);
 354 static void     pspp_sheet_view_search_enable_popdown     (GtkWidget        *widget,
 355                                                          gpointer          data);
 356 static gboolean pspp_sheet_view_search_delete_event       (GtkWidget        *widget,
 357                                                          GdkEventAny      *event,
 358                                                          PsppSheetView      *tree_view);
 359 static gboolean pspp_sheet_view_search_button_press_event (GtkWidget        *widget,
 360                                                          GdkEventButton   *event,
 361                                                          PsppSheetView      *tree_view);
 362 static gboolean pspp_sheet_view_search_scroll_event       (GtkWidget        *entry,
 363                                                          GdkEventScroll   *event,
 364                                                          PsppSheetView      *tree_view);
 365 static gboolean pspp_sheet_view_search_key_press_event    (GtkWidget        *entry,
 366                                                          GdkEventKey      *event,
 367                                                          PsppSheetView      *tree_view);
 368 static gboolean pspp_sheet_view_search_move               (GtkWidget        *window,
 369                                                          PsppSheetView      *tree_view,
 370                                                          gboolean          up);
 371 static gboolean pspp_sheet_view_search_equal_func         (GtkTreeModel     *model,
 372                                                          gint              column,
 373                                                          const gchar      *key,
 374                                                          GtkTreeIter      *iter,
 375                                                          gpointer          search_data);
 376 static gboolean pspp_sheet_view_search_iter               (GtkTreeModel     *model,
 377                                                          PsppSheetSelection *selection,
 378                                                          GtkTreeIter      *iter,
 379                                                          const gchar      *text,
 380                                                          gint             *count,
 381                                                          gint              n);
 382 static void     pspp_sheet_view_search_init               (GtkWidget        *entry,
 383                                                          PsppSheetView      *tree_view);
 384 static void     pspp_sheet_view_put                       (PsppSheetView      *tree_view,
 385                                                          GtkWidget        *child_widget,
 386                                                          gint              x,
 387                                                          gint              y,
 388                                                          gint              width,
 389                                                          gint              height);
 390 static gboolean pspp_sheet_view_start_editing             (PsppSheetView      *tree_view,
 391                                                          GtkTreePath      *cursor_path);
 392 static gboolean pspp_sheet_view_editable_button_press_event (GtkWidget *,
 393                                                              GdkEventButton *,
 394                                                              PsppSheetView *);
 395 static void pspp_sheet_view_editable_clicked (GtkButton *, PsppSheetView *);
 396 static void pspp_sheet_view_real_start_editing (PsppSheetView       *tree_view,
 397                                               PsppSheetViewColumn *column,
 398                                               GtkTreePath       *path,
 399                                               GtkCellEditable   *cell_editable,
 400                                               GdkRectangle      *cell_area,
 401                                               GdkEvent          *event,
 402                                               guint              flags);
 403 static gboolean pspp_sheet_view_real_start_interactive_search (PsppSheetView *tree_view,
 404                                                              gboolean     keybinding);
 405 static gboolean pspp_sheet_view_start_interactive_search      (PsppSheetView *tree_view);
 406 static PsppSheetViewColumn *pspp_sheet_view_get_drop_column (PsppSheetView       *tree_view,
 407                                                          PsppSheetViewColumn *column,
 408                                                          gint               drop_position);
 409 static void
 410 pspp_sheet_view_adjust_cell_area (PsppSheetView        *tree_view,
 411                                   PsppSheetViewColumn  *column,
 412                                   const GdkRectangle   *background_area,
 413                                   gboolean              subtract_focus_rect,
 414                                   GdkRectangle         *cell_area);
 415 static gint pspp_sheet_view_find_offset (PsppSheetView *tree_view,
 416                                          gint height,
 417                                          int *new_node);
 418
 419 /* GtkBuildable */
 420 static void pspp_sheet_view_buildable_add_child (GtkBuildable *tree_view,
 421                                                GtkBuilder  *builder,
 422                                                GObject     *child,
 423                                                const gchar *type);
 424 static void pspp_sheet_view_buildable_init      (GtkBuildableIface *iface);
 425
 426
 427 static gboolean scroll_row_timeout                   (gpointer     data);
 428 static void     add_scroll_timeout                   (PsppSheetView *tree_view);
 429 static void     remove_scroll_timeout                (PsppSheetView *tree_view);
 430
 431 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 432
 433 static GtkBindingSet *edit_bindings;
 434
 435 \f
 436
 437 /* GType Methods
 438  */
 439
 440 G_DEFINE_TYPE_WITH_CODE (PsppSheetView, pspp_sheet_view, GTK_TYPE_CONTAINER,
 441                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 442                                                 pspp_sheet_view_buildable_init))
 443
 444 static void
 445 pspp_sheet_view_class_init (PsppSheetViewClass *class)
 446 {
 447   GObjectClass *o_class;
 448   GtkWidgetClass *widget_class;
 449   GtkContainerClass *container_class;
 450   GtkBindingSet *binding_set[2];
 451   int i;
 452
 453   binding_set[0] = gtk_binding_set_by_class (class);
 454
 455   binding_set[1] = gtk_binding_set_new ("PsppSheetViewEditing");
 456   edit_bindings = binding_set[1];
 457
 458   o_class = (GObjectClass *) class;
 459   widget_class = (GtkWidgetClass *) class;
 460   container_class = (GtkContainerClass *) class;
 461
 462   /* GObject signals */
 463   o_class->set_property = pspp_sheet_view_set_property;
 464   o_class->get_property = pspp_sheet_view_get_property;
 465   o_class->finalize = pspp_sheet_view_finalize;
 466   o_class->dispose = pspp_sheet_view_dispose;
 467
 468   /* GtkWidget signals */
 469   widget_class->map = pspp_sheet_view_map;
 470   widget_class->realize = pspp_sheet_view_realize;
 471   widget_class->unrealize = pspp_sheet_view_unrealize;
 472   widget_class->size_request = pspp_sheet_view_size_request;
 473   widget_class->size_allocate = pspp_sheet_view_size_allocate;
 474   widget_class->button_press_event = pspp_sheet_view_button_press;
 475   widget_class->button_release_event = pspp_sheet_view_button_release;
 476   widget_class->grab_broken_event = pspp_sheet_view_grab_broken;
 477   /*widget_class->configure_event = pspp_sheet_view_configure;*/
 478   widget_class->motion_notify_event = pspp_sheet_view_motion;
 479   widget_class->expose_event = pspp_sheet_view_expose;
 480   widget_class->key_press_event = pspp_sheet_view_key_press;
 481   widget_class->key_release_event = pspp_sheet_view_key_release;
 482   widget_class->enter_notify_event = pspp_sheet_view_enter_notify;
 483   widget_class->leave_notify_event = pspp_sheet_view_leave_notify;
 484   widget_class->focus_out_event = pspp_sheet_view_focus_out;
 485   widget_class->drag_begin = pspp_sheet_view_drag_begin;
 486   widget_class->drag_end = pspp_sheet_view_drag_end;
 487   widget_class->drag_data_get = pspp_sheet_view_drag_data_get;
 488   widget_class->drag_data_delete = pspp_sheet_view_drag_data_delete;
 489   widget_class->drag_leave = pspp_sheet_view_drag_leave;
 490   widget_class->drag_motion = pspp_sheet_view_drag_motion;
 491   widget_class->drag_drop = pspp_sheet_view_drag_drop;
 492   widget_class->drag_data_received = pspp_sheet_view_drag_data_received;
 493   widget_class->focus = pspp_sheet_view_focus;
 494   widget_class->grab_focus = pspp_sheet_view_grab_focus;
 495   widget_class->style_set = pspp_sheet_view_style_set;
 496   widget_class->grab_notify = pspp_sheet_view_grab_notify;
 497   widget_class->state_changed = pspp_sheet_view_state_changed;
 498
 499   /* GtkContainer signals */
 500   container_class->remove = pspp_sheet_view_remove;
 501   container_class->forall = pspp_sheet_view_forall;
 502   container_class->set_focus_child = pspp_sheet_view_set_focus_child;
 503
 504   class->set_scroll_adjustments = pspp_sheet_view_set_adjustments;
 505   class->move_cursor = pspp_sheet_view_real_move_cursor;
 506   class->select_all = pspp_sheet_view_real_select_all;
 507   class->unselect_all = pspp_sheet_view_real_unselect_all;
 508   class->select_cursor_row = pspp_sheet_view_real_select_cursor_row;
 509   class->toggle_cursor_row = pspp_sheet_view_real_toggle_cursor_row;
 510   class->start_interactive_search = pspp_sheet_view_start_interactive_search;
 511
 512   /* Properties */
 513
 514   g_object_class_install_property (o_class,
 515                                    PROP_MODEL,
 516                                    g_param_spec_object ("model",
 517                                                         P_("TreeView Model"),
 518                                                         P_("The model for the tree view"),
 519                                                         GTK_TYPE_TREE_MODEL,
 520                                                         GTK_PARAM_READWRITE));
 521
 522   g_object_class_install_property (o_class,
 523                                    PROP_HADJUSTMENT,
 524                                    g_param_spec_object ("hadjustment",
 525                                                         P_("Horizontal Adjustment"),
 526                                                         P_("Horizontal Adjustment for the widget"),
 527                                                         GTK_TYPE_ADJUSTMENT,
 528                                                         GTK_PARAM_READWRITE));
 529
 530   g_object_class_install_property (o_class,
 531                                    PROP_VADJUSTMENT,
 532                                    g_param_spec_object ("vadjustment",
 533                                                         P_("Vertical Adjustment"),
 534                                                         P_("Vertical Adjustment for the widget"),
 535                                                         GTK_TYPE_ADJUSTMENT,
 536                                                         GTK_PARAM_READWRITE));
 537
 538   g_object_class_install_property (o_class,
 539                                    PROP_HEADERS_VISIBLE,
 540                                    g_param_spec_boolean ("headers-visible",
 541                                                          P_("Headers Visible"),
 542                                                          P_("Show the column header buttons"),
 543                                                          TRUE,
 544                                                          GTK_PARAM_READWRITE));
 545
 546   g_object_class_install_property (o_class,
 547                                    PROP_HEADERS_CLICKABLE,
 548                                    g_param_spec_boolean ("headers-clickable",
 549                                                          P_("Headers Clickable"),
 550                                                          P_("Column headers respond to click events"),
 551                                                          TRUE,
 552                                                          GTK_PARAM_READWRITE));
 553
 554   g_object_class_install_property (o_class,
 555                                    PROP_REORDERABLE,
 556                                    g_param_spec_boolean ("reorderable",
 557                                                          P_("Reorderable"),
 558                                                          P_("View is reorderable"),
 559                                                          FALSE,
 560                                                          GTK_PARAM_READWRITE));
 561
 562   g_object_class_install_property (o_class,
 563                                    PROP_RULES_HINT,
 564                                    g_param_spec_boolean ("rules-hint",
 565                                                          P_("Rules Hint"),
 566                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 567                                                          FALSE,
 568                                                          GTK_PARAM_READWRITE));
 569
 570     g_object_class_install_property (o_class,
 571                                      PROP_ENABLE_SEARCH,
 572                                      g_param_spec_boolean ("enable-search",
 573                                                            P_("Enable Search"),
 574                                                            P_("View allows user to search through columns interactively"),
 575                                                            TRUE,
 576                                                            GTK_PARAM_READWRITE));
 577
 578     g_object_class_install_property (o_class,
 579                                      PROP_SEARCH_COLUMN,
 580                                      g_param_spec_int ("search-column",
 581                                                        P_("Search Column"),
 582                                                        P_("Model column to search through during interactive search"),
 583                                                        -1,
 584                                                        G_MAXINT,
 585                                                        -1,
 586                                                        GTK_PARAM_READWRITE));
 587
 588     /**
 589      * PsppSheetView:hover-selection:
 590      *
 591      * Enables of disables the hover selection mode of @tree_view.
 592      * Hover selection makes the selected row follow the pointer.
 593      * Currently, this works only for the selection modes
 594      * %PSPP_SHEET_SELECTION_SINGLE and %PSPP_SHEET_SELECTION_BROWSE.
 595      *
 596      * This mode is primarily intended for treeviews in popups, e.g.
 597      * in #GtkComboBox or #GtkEntryCompletion.
 598      *
 599      * Since: 2.6
 600      */
 601     g_object_class_install_property (o_class,
 602                                      PROP_HOVER_SELECTION,
 603                                      g_param_spec_boolean ("hover-selection",
 604                                                            P_("Hover Selection"),
 605                                                            P_("Whether the selection should follow the pointer"),
 606                                                            FALSE,
 607                                                            GTK_PARAM_READWRITE));
 608
 609     g_object_class_install_property (o_class,
 610                                      PROP_RUBBER_BANDING,
 611                                      g_param_spec_boolean ("rubber-banding",
 612                                                            P_("Rubber Banding"),
 613                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 614                                                            FALSE,
 615                                                            GTK_PARAM_READWRITE));
 616
 617     g_object_class_install_property (o_class,
 618                                      PROP_ENABLE_GRID_LINES,
 619                                      g_param_spec_enum ("enable-grid-lines",
 620                                                         P_("Enable Grid Lines"),
 621                                                         P_("Whether grid lines should be drawn in the tree view"),
 622                                                         PSPP_TYPE_SHEET_VIEW_GRID_LINES,
 623                                                         PSPP_SHEET_VIEW_GRID_LINES_NONE,
 624                                                         GTK_PARAM_READWRITE));
 625
 626     g_object_class_install_property (o_class,
 627                                      PROP_TOOLTIP_COLUMN,
 628                                      g_param_spec_int ("tooltip-column",
 629                                                        P_("Tooltip Column"),
 630                                                        P_("The column in the model containing the tooltip texts for the rows"),
 631                                                        -1,
 632                                                        G_MAXINT,
 633                                                        -1,
 634                                                        GTK_PARAM_READWRITE));
 635
 636     g_object_class_install_property (o_class,
 637                                      PROP_SPECIAL_CELLS,
 638                                      g_param_spec_enum ("special-cells",
 639                                                         P_("Special Cells"),
 640                                                         P_("Whether rows have special cells."),
 641                                                         PSPP_TYPE_SHEET_VIEW_SPECIAL_CELLS,
 642                                                         PSPP_SHEET_VIEW_SPECIAL_CELLS_DETECT,
 643                                                         GTK_PARAM_READWRITE));
 644
 645     g_object_class_install_property (o_class,
 646                                      PROP_FIXED_HEIGHT,
 647                                      g_param_spec_int ("fixed-height",
 648                                                        P_("Fixed Height"),
 649                                                        P_("Height of a single row.  Normally the height of a row is determined automatically.  Writing this property sets fixed-height-set to true, preventing this property's value from changing."),
 650                                                        -1,
 651                                                        G_MAXINT,
 652                                                        -1,
 653                                                        GTK_PARAM_READWRITE));
 654
 655     g_object_class_install_property (o_class,
 656                                      PROP_FIXED_HEIGHT_SET,
 657                                      g_param_spec_boolean ("fixed-height-set",
 658                                                            P_("Fixed Height Set"),
 659                                                            P_("Whether fixed-height was set externally."),
 660                                                            FALSE,
 661                                                            GTK_PARAM_READWRITE));
 662
 663   /* Style properties */
 664 #define _TREE_VIEW_EXPANDER_SIZE 12
 665 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 666 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 667
 668   gtk_widget_class_install_style_property (widget_class,
 669                                            g_param_spec_int ("expander-size",
 670                                                              P_("Expander Size"),
 671                                                              P_("Size of the expander arrow"),
 672                                                              0,
 673                                                              G_MAXINT,
 674                                                              _TREE_VIEW_EXPANDER_SIZE,
 675                                                              GTK_PARAM_READABLE));
 676
 677   gtk_widget_class_install_style_property (widget_class,
 678                                            g_param_spec_int ("vertical-separator",
 679                                                              P_("Vertical Separator Width"),
 680                                                              P_("Vertical space between cells.  Must be an even number"),
 681                                                              0,
 682                                                              G_MAXINT,
 683                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 684                                                              GTK_PARAM_READABLE));
 685
 686   gtk_widget_class_install_style_property (widget_class,
 687                                            g_param_spec_int ("horizontal-separator",
 688                                                              P_("Horizontal Separator Width"),
 689                                                              P_("Horizontal space between cells.  Must be an even number"),
 690                                                              0,
 691                                                              G_MAXINT,
 692                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 693                                                              GTK_PARAM_READABLE));
 694
 695   gtk_widget_class_install_style_property (widget_class,
 696                                            g_param_spec_boolean ("allow-rules",
 697                                                                  P_("Allow Rules"),
 698                                                                  P_("Allow drawing of alternating color rows"),
 699                                                                  TRUE,
 700                                                                  GTK_PARAM_READABLE));
 701
 702   gtk_widget_class_install_style_property (widget_class,
 703                                            g_param_spec_boxed ("even-row-color",
 704                                                                P_("Even Row Color"),
 705                                                                P_("Color to use for even rows"),
 706                                                                GDK_TYPE_COLOR,
 707                                                                GTK_PARAM_READABLE));
 708
 709   gtk_widget_class_install_style_property (widget_class,
 710                                            g_param_spec_boxed ("odd-row-color",
 711                                                                P_("Odd Row Color"),
 712                                                                P_("Color to use for odd rows"),
 713                                                                GDK_TYPE_COLOR,
 714                                                                GTK_PARAM_READABLE));
 715
 716   gtk_widget_class_install_style_property (widget_class,
 717                                            g_param_spec_boolean ("row-ending-details",
 718                                                                  P_("Row Ending details"),
 719                                                                  P_("Enable extended row background theming"),
 720                                                                  FALSE,
 721                                                                  GTK_PARAM_READABLE));
 722
 723   gtk_widget_class_install_style_property (widget_class,
 724                                            g_param_spec_int ("grid-line-width",
 725                                                              P_("Grid line width"),
 726                                                              P_("Width, in pixels, of the tree view grid lines"),
 727                                                              0, G_MAXINT, 1,
 728                                                              GTK_PARAM_READABLE));
 729
 730   gtk_widget_class_install_style_property (widget_class,
 731                                            g_param_spec_int ("tree-line-width",
 732                                                              P_("Tree line width"),
 733                                                              P_("Width, in pixels, of the tree view lines"),
 734                                                              0, G_MAXINT, 1,
 735                                                              GTK_PARAM_READABLE));
 736
 737   gtk_widget_class_install_style_property (widget_class,
 738                                            g_param_spec_string ("tree-line-pattern",
 739                                                                 P_("Tree line pattern"),
 740                                                                 P_("Dash pattern used to draw the tree view lines"),
 741                                                                 "\1\1",
 742                                                                 GTK_PARAM_READABLE));
 743
 744   /* Signals */
 745   /**
 746    * PsppSheetView::set-scroll-adjustments
 747    * @horizontal: the horizontal #GtkAdjustment
 748    * @vertical: the vertical #GtkAdjustment
 749    *
 750    * Set the scroll adjustments for the tree view. Usually scrolled containers
 751    * like #GtkScrolledWindow will emit this signal to connect two instances
 752    * of #GtkScrollbar to the scroll directions of the #PsppSheetView.
 753    */
 754   widget_class->set_scroll_adjustments_signal =
 755     g_signal_new ("set-scroll-adjustments",
 756                   G_TYPE_FROM_CLASS (o_class),
 757                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 758                   G_STRUCT_OFFSET (PsppSheetViewClass, set_scroll_adjustments),
 759                   NULL, NULL,
 760                   psppire_marshal_VOID__OBJECT_OBJECT,
 761                   G_TYPE_NONE, 2,
 762                   GTK_TYPE_ADJUSTMENT,
 763                   GTK_TYPE_ADJUSTMENT);
 764
 765   /**
 766    * PsppSheetView::row-activated:
 767    * @tree_view: the object on which the signal is emitted
 768    * @path: the #GtkTreePath for the activated row
 769    * @column: the #PsppSheetViewColumn in which the activation occurred
 770    *
 771    * The "row-activated" signal is emitted when the method
 772    * pspp_sheet_view_row_activated() is called or the user double clicks
 773    * a treeview row. It is also emitted when a non-editable row is
 774    * selected and one of the keys: Space, Shift+Space, Return or
 775    * Enter is pressed.
 776    *
 777    * For selection handling refer to the <link linkend="TreeWidget">tree
 778    * widget conceptual overview</link> as well as #PsppSheetSelection.
 779    */
 780   tree_view_signals[ROW_ACTIVATED] =
 781     g_signal_new ("row-activated",
 782                   G_TYPE_FROM_CLASS (o_class),
 783                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 784                   G_STRUCT_OFFSET (PsppSheetViewClass, row_activated),
 785                   NULL, NULL,
 786                   psppire_marshal_VOID__BOXED_OBJECT,
 787                   G_TYPE_NONE, 2,
 788                   GTK_TYPE_TREE_PATH,
 789                   PSPP_TYPE_SHEET_VIEW_COLUMN);
 790
 791   /**
 792    * PsppSheetView::columns-changed:
 793    * @tree_view: the object on which the signal is emitted
 794    *
 795    * The number of columns of the treeview has changed.
 796    */
 797   tree_view_signals[COLUMNS_CHANGED] =
 798     g_signal_new ("columns-changed",
 799                   G_TYPE_FROM_CLASS (o_class),
 800                   G_SIGNAL_RUN_LAST,
 801                   G_STRUCT_OFFSET (PsppSheetViewClass, columns_changed),
 802                   NULL, NULL,
 803                   g_cclosure_marshal_VOID__VOID,
 804                   G_TYPE_NONE, 0);
 805
 806   /**
 807    * PsppSheetView::cursor-changed:
 808    * @tree_view: the object on which the signal is emitted
 809    *
 810    * The position of the cursor (focused cell) has changed.
 811    */
 812   tree_view_signals[CURSOR_CHANGED] =
 813     g_signal_new ("cursor-changed",
 814                   G_TYPE_FROM_CLASS (o_class),
 815                   G_SIGNAL_RUN_LAST,
 816                   G_STRUCT_OFFSET (PsppSheetViewClass, cursor_changed),
 817                   NULL, NULL,
 818                   g_cclosure_marshal_VOID__VOID,
 819                   G_TYPE_NONE, 0);
 820
 821   tree_view_signals[MOVE_CURSOR] =
 822     g_signal_new ("move-cursor",
 823                   G_TYPE_FROM_CLASS (o_class),
 824                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 825                   G_STRUCT_OFFSET (PsppSheetViewClass, move_cursor),
 826                   NULL, NULL,
 827                   psppire_marshal_BOOLEAN__ENUM_INT,
 828                   G_TYPE_BOOLEAN, 2,
 829                   GTK_TYPE_MOVEMENT_STEP,
 830                   G_TYPE_INT);
 831
 832   tree_view_signals[SELECT_ALL] =
 833     g_signal_new ("select-all",
 834                   G_TYPE_FROM_CLASS (o_class),
 835                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 836                   G_STRUCT_OFFSET (PsppSheetViewClass, select_all),
 837                   NULL, NULL,
 838                   psppire_marshal_BOOLEAN__VOID,
 839                   G_TYPE_BOOLEAN, 0);
 840
 841   tree_view_signals[UNSELECT_ALL] =
 842     g_signal_new ("unselect-all",
 843                   G_TYPE_FROM_CLASS (o_class),
 844                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 845                   G_STRUCT_OFFSET (PsppSheetViewClass, unselect_all),
 846                   NULL, NULL,
 847                   psppire_marshal_BOOLEAN__VOID,
 848                   G_TYPE_BOOLEAN, 0);
 849
 850   tree_view_signals[SELECT_CURSOR_ROW] =
 851     g_signal_new ("select-cursor-row",
 852                   G_TYPE_FROM_CLASS (o_class),
 853                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 854                   G_STRUCT_OFFSET (PsppSheetViewClass, select_cursor_row),
 855                   NULL, NULL,
 856                   psppire_marshal_BOOLEAN__BOOLEAN,
 857                   G_TYPE_BOOLEAN, 1,
 858                   G_TYPE_BOOLEAN);
 859
 860   tree_view_signals[TOGGLE_CURSOR_ROW] =
 861     g_signal_new ("toggle-cursor-row",
 862                   G_TYPE_FROM_CLASS (o_class),
 863                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 864                   G_STRUCT_OFFSET (PsppSheetViewClass, toggle_cursor_row),
 865                   NULL, NULL,
 866                   psppire_marshal_BOOLEAN__VOID,
 867                   G_TYPE_BOOLEAN, 0);
 868
 869   tree_view_signals[START_INTERACTIVE_SEARCH] =
 870     g_signal_new ("start-interactive-search",
 871                   G_TYPE_FROM_CLASS (o_class),
 872                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 873                   G_STRUCT_OFFSET (PsppSheetViewClass, start_interactive_search),
 874                   NULL, NULL,
 875                   psppire_marshal_BOOLEAN__VOID,
 876                   G_TYPE_BOOLEAN, 0);
 877
 878   /* Key bindings */
 879   for (i = 0; i < 2; i++)
 880     {
 881       pspp_sheet_view_add_move_binding (binding_set[i], GDK_Up, 0, TRUE,
 882                                         GTK_MOVEMENT_DISPLAY_LINES, -1);
 883       pspp_sheet_view_add_move_binding (binding_set[i], GDK_KP_Up, 0, TRUE,
 884                                         GTK_MOVEMENT_DISPLAY_LINES, -1);
 885
 886       pspp_sheet_view_add_move_binding (binding_set[i], GDK_Down, 0, TRUE,
 887                                         GTK_MOVEMENT_DISPLAY_LINES, 1);
 888       pspp_sheet_view_add_move_binding (binding_set[i], GDK_KP_Down, 0, TRUE,
 889                                         GTK_MOVEMENT_DISPLAY_LINES, 1);
 890
 891       pspp_sheet_view_add_move_binding (binding_set[i], GDK_p, GDK_CONTROL_MASK, FALSE,
 892                                         GTK_MOVEMENT_DISPLAY_LINES, -1);
 893
 894       pspp_sheet_view_add_move_binding (binding_set[i], GDK_n, GDK_CONTROL_MASK, FALSE,
 895                                         GTK_MOVEMENT_DISPLAY_LINES, 1);
 896
 897       pspp_sheet_view_add_move_binding (binding_set[i], GDK_Home, 0, TRUE,
 898                                         GTK_MOVEMENT_BUFFER_ENDS, -1);
 899       pspp_sheet_view_add_move_binding (binding_set[i], GDK_KP_Home, 0, TRUE,
 900                                         GTK_MOVEMENT_BUFFER_ENDS, -1);
 901
 902       pspp_sheet_view_add_move_binding (binding_set[i], GDK_End, 0, TRUE,
 903                                         GTK_MOVEMENT_BUFFER_ENDS, 1);
 904       pspp_sheet_view_add_move_binding (binding_set[i], GDK_KP_End, 0, TRUE,
 905                                         GTK_MOVEMENT_BUFFER_ENDS, 1);
 906
 907       pspp_sheet_view_add_move_binding (binding_set[i], GDK_Page_Up, 0, TRUE,
 908                                         GTK_MOVEMENT_PAGES, -1);
 909       pspp_sheet_view_add_move_binding (binding_set[i], GDK_KP_Page_Up, 0, TRUE,
 910                                         GTK_MOVEMENT_PAGES, -1);
 911
 912       pspp_sheet_view_add_move_binding (binding_set[i], GDK_Page_Down, 0, TRUE,
 913                                         GTK_MOVEMENT_PAGES, 1);
 914       pspp_sheet_view_add_move_binding (binding_set[i], GDK_KP_Page_Down, 0, TRUE,
 915                                         GTK_MOVEMENT_PAGES, 1);
 916
 917
 918       gtk_binding_entry_add_signal (binding_set[i], GDK_Right, 0, "move-cursor", 2,
 919                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 920                                     G_TYPE_INT, 1);
 921
 922       gtk_binding_entry_add_signal (binding_set[i], GDK_Left, 0, "move-cursor", 2,
 923                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 924                                     G_TYPE_INT, -1);
 925
 926       gtk_binding_entry_add_signal (binding_set[i], GDK_Tab, 0, "move-cursor", 2,
 927                                     G_TYPE_ENUM, GTK_MOVEMENT_LOGICAL_POSITIONS,
 928                                     G_TYPE_INT, 1);
 929
 930       gtk_binding_entry_add_signal (binding_set[i], GDK_Tab, GDK_SHIFT_MASK, "move-cursor", 2,
 931                                     G_TYPE_ENUM, GTK_MOVEMENT_LOGICAL_POSITIONS,
 932                                     G_TYPE_INT, -1);
 933
 934       gtk_binding_entry_add_signal (binding_set[i], GDK_KP_Right, 0, "move-cursor", 2,
 935                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 936                                     G_TYPE_INT, 1);
 937
 938       gtk_binding_entry_add_signal (binding_set[i], GDK_KP_Left, 0, "move-cursor", 2,
 939                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 940                                     G_TYPE_INT, -1);
 941
 942       gtk_binding_entry_add_signal (binding_set[i], GDK_Right, GDK_CONTROL_MASK,
 943                                     "move-cursor", 2,
 944                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 945                                     G_TYPE_INT, 1);
 946
 947       gtk_binding_entry_add_signal (binding_set[i], GDK_Left, GDK_CONTROL_MASK,
 948                                     "move-cursor", 2,
 949                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 950                                     G_TYPE_INT, -1);
 951
 952       gtk_binding_entry_add_signal (binding_set[i], GDK_KP_Right, GDK_CONTROL_MASK,
 953                                     "move-cursor", 2,
 954                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 955                                     G_TYPE_INT, 1);
 956
 957       gtk_binding_entry_add_signal (binding_set[i], GDK_KP_Left, GDK_CONTROL_MASK,
 958                                     "move-cursor", 2,
 959                                     G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 960                                     G_TYPE_INT, -1);
 961
 962       gtk_binding_entry_add_signal (binding_set[i], GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
 963
 964       gtk_binding_entry_add_signal (binding_set[i], GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
 965     }
 966
 967   gtk_binding_entry_add_signal (binding_set[0], GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
 968   gtk_binding_entry_add_signal (binding_set[0], GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
 969
 970   gtk_binding_entry_add_signal (binding_set[0], GDK_a, GDK_CONTROL_MASK, "select-all", 0);
 971   gtk_binding_entry_add_signal (binding_set[0], GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
 972
 973   gtk_binding_entry_add_signal (binding_set[0], GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
 974   gtk_binding_entry_add_signal (binding_set[0], GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
 975
 976   gtk_binding_entry_add_signal (binding_set[0], GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
 977                                 G_TYPE_BOOLEAN, TRUE);
 978   gtk_binding_entry_add_signal (binding_set[0], GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
 979                                 G_TYPE_BOOLEAN, TRUE);
 980
 981   gtk_binding_entry_add_signal (binding_set[0], GDK_space, 0, "select-cursor-row", 1,
 982                                 G_TYPE_BOOLEAN, TRUE);
 983   gtk_binding_entry_add_signal (binding_set[0], GDK_KP_Space, 0, "select-cursor-row", 1,
 984                                 G_TYPE_BOOLEAN, TRUE);
 985   gtk_binding_entry_add_signal (binding_set[0], GDK_Return, 0, "select-cursor-row", 1,
 986                                 G_TYPE_BOOLEAN, TRUE);
 987   gtk_binding_entry_add_signal (binding_set[0], GDK_ISO_Enter, 0, "select-cursor-row", 1,
 988                                 G_TYPE_BOOLEAN, TRUE);
 989   gtk_binding_entry_add_signal (binding_set[0], GDK_KP_Enter, 0, "select-cursor-row", 1,
 990                                 G_TYPE_BOOLEAN, TRUE);
 991
 992   gtk_binding_entry_add_signal (binding_set[0], GDK_BackSpace, 0, "select-cursor-parent", 0);
 993   gtk_binding_entry_add_signal (binding_set[0], GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
 994
 995   g_type_class_add_private (o_class, sizeof (PsppSheetViewPrivate));
 996 }
 997
 998 static void
 999 pspp_sheet_view_buildable_init (GtkBuildableIface *iface)
1000 {
1001   iface->add_child = pspp_sheet_view_buildable_add_child;
1002 }
1003
1004 static void
1005 pspp_sheet_view_init (PsppSheetView *tree_view)
1006 {
1007   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, PSPP_TYPE_SHEET_VIEW, PsppSheetViewPrivate);
1008
1009   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1010   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1011
1012   tree_view->priv->flags =  PSPP_SHEET_VIEW_DRAW_KEYFOCUS
1013                             | PSPP_SHEET_VIEW_HEADERS_VISIBLE;
1014
1015   /* We need some padding */
1016   tree_view->priv->selected = range_tower_create ();
1017   tree_view->priv->dy = 0;
1018   tree_view->priv->cursor_offset = 0;
1019   tree_view->priv->n_columns = 0;
1020   tree_view->priv->header_height = 1;
1021   tree_view->priv->x_drag = 0;
1022   tree_view->priv->drag_pos = -1;
1023   tree_view->priv->header_has_focus = FALSE;
1024   tree_view->priv->pressed_button = -1;
1025   tree_view->priv->press_start_x = -1;
1026   tree_view->priv->press_start_y = -1;
1027   tree_view->priv->reorderable = FALSE;
1028   tree_view->priv->presize_handler_timer = 0;
1029   tree_view->priv->scroll_sync_timer = 0;
1030   tree_view->priv->fixed_height = -1;
1031   tree_view->priv->fixed_height_set = FALSE;
1032   pspp_sheet_view_set_adjustments (tree_view, NULL, NULL);
1033   tree_view->priv->selection = _pspp_sheet_selection_new_with_tree_view (tree_view);
1034   tree_view->priv->enable_search = TRUE;
1035   tree_view->priv->search_column = -1;
1036   tree_view->priv->search_position_func = pspp_sheet_view_search_position_func;
1037   tree_view->priv->search_equal_func = pspp_sheet_view_search_equal_func;
1038   tree_view->priv->search_custom_entry_set = FALSE;
1039   tree_view->priv->typeselect_flush_timeout = 0;
1040   tree_view->priv->init_hadjust_value = TRUE;
1041   tree_view->priv->width = 0;
1042
1043   tree_view->priv->hover_selection = FALSE;
1044
1045   tree_view->priv->rubber_banding_enable = FALSE;
1046
1047   tree_view->priv->grid_lines = PSPP_SHEET_VIEW_GRID_LINES_NONE;
1048
1049   tree_view->priv->tooltip_column = -1;
1050
1051   tree_view->priv->special_cells = PSPP_SHEET_VIEW_SPECIAL_CELLS_DETECT;
1052
1053   tree_view->priv->post_validation_flag = FALSE;
1054
1055   tree_view->priv->last_button_x = -1;
1056   tree_view->priv->last_button_y = -1;
1057
1058   tree_view->priv->event_last_x = -10000;
1059   tree_view->priv->event_last_y = -10000;
1060
1061   tree_view->priv->prelight_node = -1;
1062   tree_view->priv->rubber_band_start_node = -1;
1063   tree_view->priv->rubber_band_end_node = -1;
1064
1065   tree_view->priv->anchor_column = NULL;
1066
1067   tree_view->priv->button_style = NULL;
1068
1069   tree_view->dispose_has_run = FALSE;
1070 }
1071
1072 \f
1073
1074 /* GObject Methods
1075  */
1076
1077 static void
1078 pspp_sheet_view_set_property (GObject         *object,
1079                             guint            prop_id,
1080                             const GValue    *value,
1081                             GParamSpec      *pspec)
1082 {
1083   PsppSheetView *tree_view;
1084
1085   tree_view = PSPP_SHEET_VIEW (object);
1086
1087   switch (prop_id)
1088     {
1089     case PROP_MODEL:
1090       pspp_sheet_view_set_model (tree_view, g_value_get_object (value));
1091       break;
1092     case PROP_HADJUSTMENT:
1093       pspp_sheet_view_set_hadjustment (tree_view, g_value_get_object (value));
1094       break;
1095     case PROP_VADJUSTMENT:
1096       pspp_sheet_view_set_vadjustment (tree_view, g_value_get_object (value));
1097       break;
1098     case PROP_HEADERS_VISIBLE:
1099       pspp_sheet_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1100       break;
1101     case PROP_HEADERS_CLICKABLE:
1102       pspp_sheet_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1103       break;
1104     case PROP_REORDERABLE:
1105       pspp_sheet_view_set_reorderable (tree_view, g_value_get_boolean (value));
1106       break;
1107     case PROP_RULES_HINT:
1108       pspp_sheet_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1109       break;
1110     case PROP_ENABLE_SEARCH:
1111       pspp_sheet_view_set_enable_search (tree_view, g_value_get_boolean (value));
1112       break;
1113     case PROP_SEARCH_COLUMN:
1114       pspp_sheet_view_set_search_column (tree_view, g_value_get_int (value));
1115       break;
1116     case PROP_HOVER_SELECTION:
1117       tree_view->priv->hover_selection = g_value_get_boolean (value);
1118       break;
1119     case PROP_RUBBER_BANDING:
1120       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1121       break;
1122     case PROP_ENABLE_GRID_LINES:
1123       pspp_sheet_view_set_grid_lines (tree_view, g_value_get_enum (value));
1124       break;
1125     case PROP_TOOLTIP_COLUMN:
1126       pspp_sheet_view_set_tooltip_column (tree_view, g_value_get_int (value));
1127       break;
1128     case PROP_SPECIAL_CELLS:
1129       pspp_sheet_view_set_special_cells (tree_view, g_value_get_enum (value));
1130       break;
1131     case PROP_FIXED_HEIGHT:
1132       pspp_sheet_view_set_fixed_height (tree_view, g_value_get_int (value));
1133       break;
1134     case PROP_FIXED_HEIGHT_SET:
1135       if (g_value_get_boolean (value))
1136         {
1137           if (!tree_view->priv->fixed_height_set
1138               && tree_view->priv->fixed_height >= 0)
1139             {
1140               tree_view->priv->fixed_height_set = true;
1141               g_object_notify (G_OBJECT (tree_view), "fixed-height-set");
1142             }
1143         }
1144       else
1145         {
1146           if (tree_view->priv->fixed_height_set)
1147             {
1148               tree_view->priv->fixed_height_set = false;
1149               g_object_notify (G_OBJECT (tree_view), "fixed-height-set");
1150               install_presize_handler (tree_view);
1151             }
1152         }
1153       break;
1154     default:
1155       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1156       break;
1157     }
1158 }
1159
1160 static void
1161 pspp_sheet_view_get_property (GObject    *object,
1162                             guint       prop_id,
1163                             GValue     *value,
1164                             GParamSpec *pspec)
1165 {
1166   PsppSheetView *tree_view;
1167
1168   tree_view = PSPP_SHEET_VIEW (object);
1169
1170   switch (prop_id)
1171     {
1172     case PROP_MODEL:
1173       g_value_set_object (value, tree_view->priv->model);
1174       break;
1175     case PROP_HADJUSTMENT:
1176       g_value_set_object (value, tree_view->priv->hadjustment);
1177       break;
1178     case PROP_VADJUSTMENT:
1179       g_value_set_object (value, tree_view->priv->vadjustment);
1180       break;
1181     case PROP_HEADERS_VISIBLE:
1182       g_value_set_boolean (value, pspp_sheet_view_get_headers_visible (tree_view));
1183       break;
1184     case PROP_HEADERS_CLICKABLE:
1185       g_value_set_boolean (value, pspp_sheet_view_get_headers_clickable (tree_view));
1186       break;
1187     case PROP_REORDERABLE:
1188       g_value_set_boolean (value, tree_view->priv->reorderable);
1189       break;
1190     case PROP_RULES_HINT:
1191       g_value_set_boolean (value, tree_view->priv->has_rules);
1192       break;
1193     case PROP_ENABLE_SEARCH:
1194       g_value_set_boolean (value, tree_view->priv->enable_search);
1195       break;
1196     case PROP_SEARCH_COLUMN:
1197       g_value_set_int (value, tree_view->priv->search_column);
1198       break;
1199     case PROP_HOVER_SELECTION:
1200       g_value_set_boolean (value, tree_view->priv->hover_selection);
1201       break;
1202     case PROP_RUBBER_BANDING:
1203       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1204       break;
1205     case PROP_ENABLE_GRID_LINES:
1206       g_value_set_enum (value, tree_view->priv->grid_lines);
1207       break;
1208     case PROP_TOOLTIP_COLUMN:
1209       g_value_set_int (value, tree_view->priv->tooltip_column);
1210       break;
1211     case PROP_SPECIAL_CELLS:
1212       g_value_set_enum (value, tree_view->priv->special_cells);
1213       break;
1214     case PROP_FIXED_HEIGHT:
1215       g_value_set_int (value, pspp_sheet_view_get_fixed_height (tree_view));
1216       break;
1217     case PROP_FIXED_HEIGHT_SET:
1218       g_value_set_boolean (value, tree_view->priv->fixed_height_set);
1219       break;
1220     default:
1221       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1222       break;
1223     }
1224 }
1225
1226 static void
1227 pspp_sheet_view_dispose (GObject *object)
1228 {
1229   PsppSheetView *tree_view = PSPP_SHEET_VIEW (object);
1230
1231   if (tree_view->dispose_has_run)
1232     return;
1233
1234   tree_view->dispose_has_run = TRUE;
1235
1236   if (tree_view->priv->selection != NULL)
1237     {
1238       _pspp_sheet_selection_set_tree_view (tree_view->priv->selection, NULL);
1239       g_object_unref (tree_view->priv->selection);
1240       tree_view->priv->selection = NULL;
1241     }
1242
1243   if (tree_view->priv->hadjustment)
1244     {
1245       g_object_unref (tree_view->priv->hadjustment);
1246       tree_view->priv->hadjustment = NULL;
1247     }
1248   if (tree_view->priv->vadjustment)
1249     {
1250       g_object_unref (tree_view->priv->vadjustment);
1251       tree_view->priv->vadjustment = NULL;
1252     }
1253
1254   if (tree_view->priv->button_style)
1255     {
1256       g_object_unref (tree_view->priv->button_style);
1257       tree_view->priv->button_style = NULL;
1258     }
1259
1260
1261   G_OBJECT_CLASS (pspp_sheet_view_parent_class)->dispose (object);
1262 }
1263
1264 \f
1265
1266 static void
1267 pspp_sheet_view_buildable_add_child (GtkBuildable *tree_view,
1268                                    GtkBuilder  *builder,
1269                                    GObject     *child,
1270                                    const gchar *type)
1271 {
1272   pspp_sheet_view_append_column (PSPP_SHEET_VIEW (tree_view), PSPP_SHEET_VIEW_COLUMN (child));
1273 }
1274
1275 static void
1276 pspp_sheet_view_finalize (GObject *object)
1277 {
1278   PsppSheetView *tree_view = PSPP_SHEET_VIEW (object);
1279
1280   pspp_sheet_view_stop_editing (tree_view, TRUE);
1281
1282   if (tree_view->priv->selected != NULL)
1283     {
1284       range_tower_destroy (tree_view->priv->selected);
1285       tree_view->priv->selected = NULL;
1286     }
1287
1288
1289   tree_view->priv->prelight_node = -1;
1290
1291
1292   if (tree_view->priv->scroll_to_path != NULL)
1293     {
1294       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1295       tree_view->priv->scroll_to_path = NULL;
1296     }
1297
1298   if (tree_view->priv->drag_dest_row != NULL)
1299     {
1300       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1301       tree_view->priv->drag_dest_row = NULL;
1302     }
1303
1304   if (tree_view->priv->top_row != NULL)
1305     {
1306       gtk_tree_row_reference_free (tree_view->priv->top_row);
1307       tree_view->priv->top_row = NULL;
1308     }
1309
1310   if (tree_view->priv->column_drop_func_data &&
1311       tree_view->priv->column_drop_func_data_destroy)
1312     {
1313       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1314       tree_view->priv->column_drop_func_data = NULL;
1315     }
1316
1317   if (tree_view->priv->destroy_count_destroy &&
1318       tree_view->priv->destroy_count_data)
1319     {
1320       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1321       tree_view->priv->destroy_count_data = NULL;
1322     }
1323
1324   gtk_tree_row_reference_free (tree_view->priv->cursor);
1325   tree_view->priv->cursor = NULL;
1326
1327   gtk_tree_row_reference_free (tree_view->priv->anchor);
1328   tree_view->priv->anchor = NULL;
1329
1330   /* destroy interactive search dialog */
1331   if (tree_view->priv->search_window)
1332     {
1333       gtk_widget_destroy (tree_view->priv->search_window);
1334       tree_view->priv->search_window = NULL;
1335       tree_view->priv->search_entry = NULL;
1336       if (tree_view->priv->typeselect_flush_timeout)
1337         {
1338           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1339           tree_view->priv->typeselect_flush_timeout = 0;
1340         }
1341     }
1342
1343   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1344     {
1345       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1346       tree_view->priv->search_user_data = NULL;
1347     }
1348
1349   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1350     {
1351       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1352       tree_view->priv->search_position_user_data = NULL;
1353     }
1354
1355   pspp_sheet_view_set_model (tree_view, NULL);
1356
1357
1358   G_OBJECT_CLASS (pspp_sheet_view_parent_class)->finalize (object);
1359 }
1360
1361 \f
1362
1363 /* GtkWidget Methods
1364  */
1365
1366 /* GtkWidget::map helper */
1367 static void
1368 pspp_sheet_view_map_buttons (PsppSheetView *tree_view)
1369 {
1370   GList *list;
1371
1372   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1373
1374   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE))
1375     {
1376       PsppSheetViewColumn *column;
1377
1378       for (list = tree_view->priv->columns; list; list = list->next)
1379         {
1380           column = list->data;
1381           if (column->button != NULL &&
1382               gtk_widget_get_visible (column->button) &&
1383               !gtk_widget_get_mapped (column->button))
1384             gtk_widget_map (column->button);
1385         }
1386       for (list = tree_view->priv->columns; list; list = list->next)
1387         {
1388           column = list->data;
1389           if (column->visible == FALSE || column->window == NULL)
1390             continue;
1391           if (column->resizable)
1392             {
1393               gdk_window_raise (column->window);
1394               gdk_window_show (column->window);
1395             }
1396           else
1397             gdk_window_hide (column->window);
1398         }
1399       gdk_window_show (tree_view->priv->header_window);
1400     }
1401 }
1402
1403 static void
1404 pspp_sheet_view_map (GtkWidget *widget)
1405 {
1406   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
1407   GList *tmp_list;
1408
1409   gtk_widget_set_mapped (widget, TRUE);
1410
1411   tmp_list = tree_view->priv->children;
1412   while (tmp_list)
1413     {
1414       PsppSheetViewChild *child = tmp_list->data;
1415       tmp_list = tmp_list->next;
1416
1417       if (gtk_widget_get_visible (child->widget))
1418         {
1419           if (!gtk_widget_get_mapped (child->widget))
1420             gtk_widget_map (child->widget);
1421         }
1422     }
1423   gdk_window_show (tree_view->priv->bin_window);
1424
1425   pspp_sheet_view_map_buttons (tree_view);
1426
1427   gdk_window_show (widget->window);
1428 }
1429
1430 static void
1431 pspp_sheet_view_realize (GtkWidget *widget)
1432 {
1433   gint i;
1434   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
1435   GList *tmp_list;
1436   GdkWindowAttr attributes;
1437   gint attributes_mask;
1438
1439   gtk_widget_set_realized (widget, TRUE);
1440
1441   /* Make the main, clipping window */
1442   attributes.window_type = GDK_WINDOW_CHILD;
1443   attributes.x = widget->allocation.x;
1444   attributes.y = widget->allocation.y;
1445   attributes.width = widget->allocation.width;
1446   attributes.height = widget->allocation.height;
1447   attributes.wclass = GDK_INPUT_OUTPUT;
1448   attributes.visual = gtk_widget_get_visual (widget);
1449   attributes.colormap = gtk_widget_get_colormap (widget);
1450   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1451
1452   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1453
1454   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1455                                    &attributes, attributes_mask);
1456   gdk_window_set_user_data (widget->window, widget);
1457
1458   /* Make the window for the tree */
1459   attributes.x = 0;
1460   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1461   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1462   attributes.height = widget->allocation.height;
1463   attributes.event_mask = (GDK_EXPOSURE_MASK |
1464                            GDK_SCROLL_MASK |
1465                            GDK_POINTER_MOTION_MASK |
1466                            GDK_ENTER_NOTIFY_MASK |
1467                            GDK_LEAVE_NOTIFY_MASK |
1468                            GDK_BUTTON_PRESS_MASK |
1469                            GDK_BUTTON_RELEASE_MASK |
1470                            gtk_widget_get_events (widget));
1471
1472   tree_view->priv->bin_window = gdk_window_new (widget->window,
1473                                                 &attributes, attributes_mask);
1474   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1475
1476   /* Make the column header window */
1477   attributes.x = 0;
1478   attributes.y = 0;
1479   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1480   attributes.height = tree_view->priv->header_height;
1481   attributes.event_mask = (GDK_EXPOSURE_MASK |
1482                            GDK_SCROLL_MASK |
1483                            GDK_BUTTON_PRESS_MASK |
1484                            GDK_BUTTON_RELEASE_MASK |
1485                            GDK_KEY_PRESS_MASK |
1486                            GDK_KEY_RELEASE_MASK |
1487                            gtk_widget_get_events (widget));
1488
1489   tree_view->priv->header_window = gdk_window_new (widget->window,
1490                                                    &attributes, attributes_mask);
1491   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1492
1493   /* Add them all up. */
1494   widget->style = gtk_style_attach (widget->style, widget->window);
1495   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1496   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1497   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1498
1499   tmp_list = tree_view->priv->children;
1500   while (tmp_list)
1501     {
1502       PsppSheetViewChild *child = tmp_list->data;
1503       tmp_list = tmp_list->next;
1504
1505       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1506     }
1507
1508   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1509     _pspp_sheet_view_column_realize_button (PSPP_SHEET_VIEW_COLUMN (tmp_list->data));
1510
1511   /* Need to call those here, since they create GCs */
1512   pspp_sheet_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1513
1514   install_presize_handler (tree_view);
1515
1516   for (i = 0; i < 5; ++i)
1517     {
1518       tree_view->priv->grid_line_gc[i] = gdk_gc_new (widget->window);
1519       gdk_gc_copy (tree_view->priv->grid_line_gc[i], widget->style->text_aa_gc[i]);
1520     }
1521 }
1522
1523 static void
1524 pspp_sheet_view_unrealize (GtkWidget *widget)
1525 {
1526   gint x;
1527   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
1528   PsppSheetViewPrivate *priv = tree_view->priv;
1529   GList *list;
1530
1531   GTK_WIDGET_CLASS (pspp_sheet_view_parent_class)->unrealize (widget);
1532
1533   if (priv->scroll_timeout != 0)
1534     {
1535       g_source_remove (priv->scroll_timeout);
1536       priv->scroll_timeout = 0;
1537     }
1538
1539   if (priv->open_dest_timeout != 0)
1540     {
1541       g_source_remove (priv->open_dest_timeout);
1542       priv->open_dest_timeout = 0;
1543     }
1544
1545   if (priv->presize_handler_timer != 0)
1546     {
1547       g_source_remove (priv->presize_handler_timer);
1548       priv->presize_handler_timer = 0;
1549     }
1550
1551   if (priv->validate_rows_timer != 0)
1552     {
1553       g_source_remove (priv->validate_rows_timer);
1554       priv->validate_rows_timer = 0;
1555     }
1556
1557   if (priv->scroll_sync_timer != 0)
1558     {
1559       g_source_remove (priv->scroll_sync_timer);
1560       priv->scroll_sync_timer = 0;
1561     }
1562
1563   if (priv->typeselect_flush_timeout)
1564     {
1565       g_source_remove (priv->typeselect_flush_timeout);
1566       priv->typeselect_flush_timeout = 0;
1567     }
1568
1569   for (list = priv->columns; list; list = list->next)
1570     _pspp_sheet_view_column_unrealize_button (PSPP_SHEET_VIEW_COLUMN (list->data));
1571
1572   gdk_window_set_user_data (priv->bin_window, NULL);
1573   gdk_window_destroy (priv->bin_window);
1574   priv->bin_window = NULL;
1575
1576   gdk_window_set_user_data (priv->header_window, NULL);
1577   gdk_window_destroy (priv->header_window);
1578   priv->header_window = NULL;
1579
1580   if (priv->drag_window)
1581     {
1582       gdk_window_set_user_data (priv->drag_window, NULL);
1583       gdk_window_destroy (priv->drag_window);
1584       priv->drag_window = NULL;
1585     }
1586
1587   if (priv->drag_highlight_window)
1588     {
1589       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1590       gdk_window_destroy (priv->drag_highlight_window);
1591       priv->drag_highlight_window = NULL;
1592     }
1593
1594   for (x = 0 ; x < 5 ; ++x)
1595     g_object_unref (priv->grid_line_gc[x]);
1596
1597   if (tree_view->priv->columns != NULL)
1598     {
1599       list = tree_view->priv->columns;
1600       while (list)
1601         {
1602           PsppSheetViewColumn *column;
1603           column = PSPP_SHEET_VIEW_COLUMN (list->data);
1604           list = list->next;
1605           pspp_sheet_view_remove_column (tree_view, column);
1606         }
1607       tree_view->priv->columns = NULL;
1608     }
1609 }
1610
1611 /* GtkWidget::size_request helper */
1612 static void
1613 pspp_sheet_view_size_request_columns (PsppSheetView *tree_view)
1614 {
1615   GList *list;
1616
1617   tree_view->priv->header_height = 0;
1618
1619   if (tree_view->priv->model)
1620     {
1621       for (list = tree_view->priv->columns; list; list = list->next)
1622         {
1623           GtkRequisition requisition;
1624           PsppSheetViewColumn *column = list->data;
1625
1626           pspp_sheet_view_column_size_request (column, &requisition);
1627           column->button_request = requisition.width;
1628           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1629         }
1630     }
1631 }
1632
1633
1634 /* Called only by ::size_request */
1635 static void
1636 pspp_sheet_view_update_size (PsppSheetView *tree_view)
1637 {
1638   GList *list;
1639   PsppSheetViewColumn *column;
1640   gint i;
1641
1642   if (tree_view->priv->model == NULL)
1643     {
1644       tree_view->priv->width = 0;
1645       tree_view->priv->prev_width = 0;
1646       tree_view->priv->height = 0;
1647       return;
1648     }
1649
1650   tree_view->priv->prev_width = tree_view->priv->width;
1651   tree_view->priv->width = 0;
1652
1653   /* keep this in sync with size_allocate below */
1654   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1655     {
1656       gint real_requested_width = 0;
1657       column = list->data;
1658       if (!column->visible)
1659         continue;
1660
1661       if (column->use_resized_width)
1662         {
1663           real_requested_width = column->resized_width;
1664         }
1665       else
1666         {
1667           real_requested_width = column->fixed_width;
1668         }
1669
1670       if (column->min_width != -1)
1671         real_requested_width = MAX (real_requested_width, column->min_width);
1672       if (column->max_width != -1)
1673         real_requested_width = MIN (real_requested_width, column->max_width);
1674
1675       tree_view->priv->width += real_requested_width;
1676     }
1677
1678   tree_view->priv->height = tree_view->priv->fixed_height * tree_view->priv->row_count;
1679 }
1680
1681 static void
1682 pspp_sheet_view_size_request (GtkWidget      *widget,
1683                             GtkRequisition *requisition)
1684 {
1685   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
1686   GList *tmp_list;
1687
1688   /* we validate some rows initially just to make sure we have some size.
1689    * In practice, with a lot of static lists, this should get a good width.
1690    */
1691   initialize_fixed_height_mode (tree_view);
1692   pspp_sheet_view_size_request_columns (tree_view);
1693   pspp_sheet_view_update_size (PSPP_SHEET_VIEW (widget));
1694
1695   requisition->width = tree_view->priv->width;
1696   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
1697
1698   tmp_list = tree_view->priv->children;
1699
1700   while (tmp_list)
1701     {
1702       PsppSheetViewChild *child = tmp_list->data;
1703       GtkRequisition child_requisition;
1704
1705       tmp_list = tmp_list->next;
1706
1707       if (gtk_widget_get_visible (child->widget))
1708         gtk_widget_size_request (child->widget, &child_requisition);
1709     }
1710 }
1711
1712 static void
1713 invalidate_column (PsppSheetView       *tree_view,
1714                    PsppSheetViewColumn *column)
1715 {
1716   gint column_offset = 0;
1717   GList *list;
1718   GtkWidget *widget = GTK_WIDGET (tree_view);
1719   gboolean rtl;
1720
1721   if (!gtk_widget_get_realized (widget))
1722     return;
1723
1724   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
1725   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
1726        list;
1727        list = (rtl ? list->prev : list->next))
1728     {
1729       PsppSheetViewColumn *tmpcolumn = list->data;
1730       if (tmpcolumn == column)
1731         {
1732           GdkRectangle invalid_rect;
1733
1734           invalid_rect.x = column_offset;
1735           invalid_rect.y = 0;
1736           invalid_rect.width = column->width;
1737           invalid_rect.height = widget->allocation.height;
1738
1739           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
1740           break;
1741         }
1742
1743       column_offset += tmpcolumn->width;
1744     }
1745 }
1746
1747 static void
1748 invalidate_last_column (PsppSheetView *tree_view)
1749 {
1750   GList *last_column;
1751   gboolean rtl;
1752
1753   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
1754
1755   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
1756        last_column;
1757        last_column = (rtl ? last_column->next : last_column->prev))
1758     {
1759       if (PSPP_SHEET_VIEW_COLUMN (last_column->data)->visible)
1760         {
1761           invalidate_column (tree_view, last_column->data);
1762           return;
1763         }
1764     }
1765 }
1766
1767 static gint
1768 pspp_sheet_view_get_real_requested_width_from_column (PsppSheetView       *tree_view,
1769                                                     PsppSheetViewColumn *column)
1770 {
1771   gint real_requested_width;
1772
1773   if (column->use_resized_width)
1774     {
1775       real_requested_width = column->resized_width;
1776     }
1777   else
1778     {
1779       real_requested_width = column->fixed_width;
1780     }
1781
1782   if (column->min_width != -1)
1783     real_requested_width = MAX (real_requested_width, column->min_width);
1784   if (column->max_width != -1)
1785     real_requested_width = MIN (real_requested_width, column->max_width);
1786
1787   return real_requested_width;
1788 }
1789
1790 static gboolean
1791 span_intersects (int a0, int a_width,
1792                  int b0, int b_width)
1793 {
1794   int a1 = a0 + a_width;
1795   int b1 = b0 + b_width;
1796   return (a0 >= b0 && a0 < b1) || (b0 >= a0 && b0 < a1);
1797 }
1798
1799 /* GtkWidget::size_allocate helper */
1800 static void
1801 pspp_sheet_view_size_allocate_columns (GtkWidget *widget,
1802                                      gboolean  *width_changed)
1803 {
1804   PsppSheetView *tree_view;
1805   GList *list, *first_column, *last_column;
1806   PsppSheetViewColumn *column;
1807   GtkAllocation allocation;
1808   gint width = 0;
1809   gint extra, extra_per_column;
1810   gint full_requested_width = 0;
1811   gint number_of_expand_columns = 0;
1812   gboolean column_changed = FALSE;
1813   gboolean rtl;
1814
1815   tree_view = PSPP_SHEET_VIEW (widget);
1816
1817   for (last_column = g_list_last (tree_view->priv->columns);
1818        last_column && !(PSPP_SHEET_VIEW_COLUMN (last_column->data)->visible);
1819        last_column = last_column->prev)
1820     ;
1821   if (last_column == NULL)
1822     return;
1823
1824   for (first_column = g_list_first (tree_view->priv->columns);
1825        first_column && !(PSPP_SHEET_VIEW_COLUMN (first_column->data)->visible);
1826        first_column = first_column->next)
1827     ;
1828
1829   allocation.y = 0;
1830   allocation.height = tree_view->priv->header_height;
1831
1832   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
1833
1834   /* find out how many extra space and expandable columns we have */
1835   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
1836     {
1837       column = (PsppSheetViewColumn *)list->data;
1838
1839       if (!column->visible)
1840         continue;
1841
1842       full_requested_width += pspp_sheet_view_get_real_requested_width_from_column (tree_view, column);
1843
1844       if (column->expand)
1845         number_of_expand_columns++;
1846     }
1847
1848   extra = MAX (widget->allocation.width - full_requested_width, 0);
1849   if (number_of_expand_columns > 0)
1850     extra_per_column = extra/number_of_expand_columns;
1851   else
1852     extra_per_column = 0;
1853
1854   for (list = (rtl ? last_column : first_column);
1855        list != (rtl ? first_column->prev : last_column->next);
1856        list = (rtl ? list->prev : list->next))
1857     {
1858       gint real_requested_width = 0;
1859       gint old_width;
1860
1861       column = list->data;
1862       old_width = column->width;
1863
1864       if (!column->visible)
1865         continue;
1866
1867       /* We need to handle the dragged button specially.
1868        */
1869       if (column == tree_view->priv->drag_column)
1870         {
1871           GtkAllocation drag_allocation;
1872           gdk_drawable_get_size (tree_view->priv->drag_window,
1873                                  &(drag_allocation.width),
1874                                  &(drag_allocation.height));
1875           drag_allocation.x = 0;
1876           drag_allocation.y = 0;
1877           pspp_sheet_view_column_size_allocate (tree_view->priv->drag_column,
1878                                                 &drag_allocation);
1879           width += drag_allocation.width;
1880           continue;
1881         }
1882
1883       real_requested_width = pspp_sheet_view_get_real_requested_width_from_column (tree_view, column);
1884
1885       allocation.x = width;
1886       column->width = real_requested_width;
1887
1888       if (column->expand)
1889         {
1890           if (number_of_expand_columns == 1)
1891             {
1892               /* We add the remander to the last column as
1893                * */
1894               column->width += extra;
1895             }
1896           else
1897             {
1898               column->width += extra_per_column;
1899               extra -= extra_per_column;
1900               number_of_expand_columns --;
1901             }
1902         }
1903
1904       if (column->width != old_width)
1905         g_object_notify (G_OBJECT (column), "width");
1906
1907       allocation.width = column->width;
1908       width += column->width;
1909
1910       if (column->width > old_width)
1911         column_changed = TRUE;
1912
1913       pspp_sheet_view_column_size_allocate (column, &allocation);
1914
1915       if (span_intersects (allocation.x, allocation.width,
1916                            tree_view->priv->hadjustment->value,
1917                            widget->allocation.width)
1918           && gtk_widget_get_realized (widget))
1919         pspp_sheet_view_column_set_need_button (column, TRUE);
1920
1921       if (column->window)
1922         gdk_window_move_resize (column->window,
1923                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
1924                                 allocation.y,
1925                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
1926     }
1927
1928   /* We change the width here.  The user might have been resizing columns,
1929    * so the total width of the tree view changes.
1930    */
1931   tree_view->priv->width = width;
1932   if (width_changed)
1933     *width_changed = TRUE;
1934
1935   if (column_changed)
1936     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
1937 }
1938
1939
1940 static void
1941 pspp_sheet_view_size_allocate (GtkWidget     *widget,
1942                              GtkAllocation *allocation)
1943 {
1944   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
1945   GList *tmp_list;
1946   gboolean width_changed = FALSE;
1947   gint old_width = widget->allocation.width;
1948
1949   if (allocation->width != widget->allocation.width)
1950     width_changed = TRUE;
1951
1952   widget->allocation = *allocation;
1953
1954   tmp_list = tree_view->priv->children;
1955
1956   while (tmp_list)
1957     {
1958       GtkAllocation allocation;
1959
1960       PsppSheetViewChild *child = tmp_list->data;
1961       tmp_list = tmp_list->next;
1962
1963       /* totally ignore our child's requisition */
1964       allocation.x = child->x;
1965       allocation.y = child->y;
1966       allocation.width = child->width;
1967       allocation.height = child->height;
1968       gtk_widget_size_allocate (child->widget, &allocation);
1969     }
1970
1971   /* We size-allocate the columns first because the width of the
1972    * tree view (used in updating the adjustments below) might change.
1973    */
1974   pspp_sheet_view_size_allocate_columns (widget, &width_changed);
1975
1976   tree_view->priv->hadjustment->page_size = allocation->width;
1977   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
1978   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
1979   tree_view->priv->hadjustment->lower = 0;
1980   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
1981
1982   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
1983     {
1984       if (allocation->width < tree_view->priv->width)
1985         {
1986           if (tree_view->priv->init_hadjust_value)
1987             {
1988               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1989               tree_view->priv->init_hadjust_value = FALSE;
1990             }
1991           else if (allocation->width != old_width)
1992             {
1993               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
1994             }
1995           else
1996             tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value), 0, tree_view->priv->width - allocation->width);
1997         }
1998       else
1999         {
2000           tree_view->priv->hadjustment->value = 0;
2001           tree_view->priv->init_hadjust_value = TRUE;
2002         }
2003     }
2004   else
2005     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2006       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2007
2008   gtk_adjustment_changed (tree_view->priv->hadjustment);
2009
2010   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2011   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2012   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2013   tree_view->priv->vadjustment->lower = 0;
2014   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2015
2016   gtk_adjustment_changed (tree_view->priv->vadjustment);
2017
2018   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2019   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2020     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2021   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2022     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2023                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2024   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2025     pspp_sheet_view_top_row_to_dy (tree_view);
2026   else
2027     pspp_sheet_view_dy_to_top_row (tree_view);
2028
2029   if (gtk_widget_get_realized (widget))
2030     {
2031       gdk_window_move_resize (widget->window,
2032                               allocation->x, allocation->y,
2033                               allocation->width, allocation->height);
2034       gdk_window_move_resize (tree_view->priv->header_window,
2035                               - (gint) tree_view->priv->hadjustment->value,
2036                               0,
2037                               MAX (tree_view->priv->width, allocation->width),
2038                               tree_view->priv->header_height);
2039       gdk_window_move_resize (tree_view->priv->bin_window,
2040                               - (gint) tree_view->priv->hadjustment->value,
2041                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2042                               MAX (tree_view->priv->width, allocation->width),
2043                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2044     }
2045
2046   if (tree_view->priv->row_count == 0)
2047     invalidate_empty_focus (tree_view);
2048
2049   if (gtk_widget_get_realized (widget))
2050     {
2051       gboolean has_expand_column = FALSE;
2052       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2053         {
2054           if (pspp_sheet_view_column_get_expand (PSPP_SHEET_VIEW_COLUMN (tmp_list->data)))
2055             {
2056               has_expand_column = TRUE;
2057               break;
2058             }
2059         }
2060
2061       /* This little hack only works if we have an LTR locale, and no column has the  */
2062       if (width_changed)
2063         {
2064           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2065               ! has_expand_column)
2066             invalidate_last_column (tree_view);
2067           else
2068             gtk_widget_queue_draw (widget);
2069         }
2070     }
2071 }
2072
2073 /* Grabs the focus and unsets the PSPP_SHEET_VIEW_DRAW_KEYFOCUS flag */
2074 static void
2075 grab_focus_and_unset_draw_keyfocus (PsppSheetView *tree_view)
2076 {
2077   GtkWidget *widget = GTK_WIDGET (tree_view);
2078
2079   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2080     gtk_widget_grab_focus (widget);
2081   PSPP_SHEET_VIEW_UNSET_FLAG (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS);
2082 }
2083
2084 gboolean
2085 pspp_sheet_view_node_is_selected (PsppSheetView *tree_view,
2086                                   int node)
2087 {
2088   return node >= 0 && range_tower_contains (tree_view->priv->selected, node);
2089 }
2090
2091 void
2092 pspp_sheet_view_node_select (PsppSheetView *tree_view,
2093                              int node)
2094 {
2095   range_tower_set1 (tree_view->priv->selected, node, 1);
2096 }
2097
2098 void
2099 pspp_sheet_view_node_unselect (PsppSheetView *tree_view,
2100                                int node)
2101 {
2102   range_tower_set0 (tree_view->priv->selected, node, 1);
2103 }
2104
2105 gint
2106 pspp_sheet_view_node_next (PsppSheetView *tree_view,
2107                            gint node)
2108 {
2109   return node + 1 < tree_view->priv->row_count ? node + 1 : -1;
2110 }
2111
2112 gint
2113 pspp_sheet_view_node_prev (PsppSheetView *tree_view,
2114                            gint node)
2115 {
2116   return node > 0 ? node - 1 : -1;
2117 }
2118
2119 static gboolean
2120 all_columns_selected (PsppSheetView *tree_view)
2121 {
2122   GList *list;
2123
2124   for (list = tree_view->priv->columns; list; list = list->next)
2125     {
2126       PsppSheetViewColumn *column = list->data;
2127       if (column->selectable && !column->selected)
2128         return FALSE;
2129     }
2130
2131   return TRUE;
2132 }
2133
2134 static gboolean
2135 pspp_sheet_view_row_head_clicked (PsppSheetView *tree_view,
2136                                   gint node,
2137                                   PsppSheetViewColumn *column,
2138                                   GdkEventButton *event)
2139 {
2140   PsppSheetSelection *selection;
2141   PsppSheetSelectionMode mode;
2142   GtkTreePath *path;
2143   gboolean update_anchor;
2144   gboolean handled;
2145   guint modifiers;
2146
2147   g_return_val_if_fail (tree_view != NULL, FALSE);
2148   g_return_val_if_fail (column != NULL, FALSE);
2149
2150   selection = tree_view->priv->selection;
2151   mode = pspp_sheet_selection_get_mode (selection);
2152   if (mode != PSPP_SHEET_SELECTION_RECTANGLE)
2153     return FALSE;
2154
2155   if (!column->row_head)
2156     return FALSE;
2157
2158   if (event)
2159     {
2160       modifiers = event->state & gtk_accelerator_get_default_mod_mask ();
2161       if (event->type != GDK_BUTTON_PRESS
2162           || (modifiers != GDK_CONTROL_MASK && modifiers != GDK_SHIFT_MASK))
2163         return FALSE;
2164     }
2165   else
2166     modifiers = 0;
2167
2168   path = gtk_tree_path_new_from_indices (node, -1);
2169   if (event == NULL)
2170     {
2171       pspp_sheet_selection_unselect_all (selection);
2172       pspp_sheet_selection_select_path (selection, path);
2173       pspp_sheet_selection_select_all_columns (selection);
2174       update_anchor = TRUE;
2175       handled = TRUE;
2176     }
2177   else if (event->type == GDK_BUTTON_PRESS && event->button == 3)
2178     {
2179       if (pspp_sheet_selection_count_selected_rows (selection) <= 1
2180           || !all_columns_selected (tree_view))
2181         {
2182           pspp_sheet_selection_unselect_all (selection);
2183           pspp_sheet_selection_select_path (selection, path);
2184           pspp_sheet_selection_select_all_columns (selection);
2185           update_anchor = TRUE;
2186           handled = FALSE;
2187         }
2188       else
2189         update_anchor = handled = FALSE;
2190     }
2191   else if (event->type == GDK_BUTTON_PRESS && event->button == 1
2192            && modifiers == GDK_CONTROL_MASK)
2193     {
2194       if (!all_columns_selected (tree_view))
2195         {
2196           pspp_sheet_selection_unselect_all (selection);
2197           pspp_sheet_selection_select_all_columns (selection);
2198         }
2199
2200       if (pspp_sheet_selection_path_is_selected (selection, path))
2201         pspp_sheet_selection_unselect_path (selection, path);
2202       else
2203         pspp_sheet_selection_select_path (selection, path);
2204       update_anchor = TRUE;
2205       handled = TRUE;
2206     }
2207   else if (event->type == GDK_BUTTON_PRESS && event->button == 1
2208            && modifiers == GDK_SHIFT_MASK)
2209     {
2210       GtkTreeRowReference *anchor = tree_view->priv->anchor;
2211       GtkTreePath *anchor_path;
2212
2213       if (all_columns_selected (tree_view)
2214           && gtk_tree_row_reference_valid (anchor))
2215         {
2216           update_anchor = FALSE;
2217           anchor_path = gtk_tree_row_reference_get_path (anchor);
2218         }
2219       else
2220         {
2221           update_anchor = TRUE;
2222           anchor_path = gtk_tree_path_copy (path);
2223         }
2224
2225       pspp_sheet_selection_unselect_all (selection);
2226       pspp_sheet_selection_select_range (selection, anchor_path, path);
2227       pspp_sheet_selection_select_all_columns (selection);
2228
2229       gtk_tree_path_free (anchor_path);
2230
2231       handled = TRUE;
2232     }
2233   else
2234     update_anchor = handled = FALSE;
2235
2236   if (update_anchor)
2237     {
2238       if (tree_view->priv->anchor)
2239         gtk_tree_row_reference_free (tree_view->priv->anchor);
2240       tree_view->priv->anchor =
2241         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
2242                                           tree_view->priv->model,
2243                                           path);
2244     }
2245
2246   gtk_tree_path_free (path);
2247   return handled;
2248 }
2249
2250 static gboolean
2251 find_click (PsppSheetView *tree_view,
2252             gint x, gint y,
2253             gint *node,
2254             PsppSheetViewColumn **column,
2255             GdkRectangle *background_area,
2256             GdkRectangle *cell_area)
2257 {
2258   gint y_offset;
2259   gboolean rtl;
2260   GList *list;
2261   gint new_y;
2262
2263   /* find the node that was clicked */
2264   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, y);
2265   if (new_y < 0)
2266     new_y = 0;
2267   y_offset = -pspp_sheet_view_find_offset (tree_view, new_y, node);
2268
2269   if (*node < 0)
2270     return FALSE;
2271
2272   background_area->y = y_offset + y;
2273   background_area->height = ROW_HEIGHT (tree_view);
2274   background_area->x = 0;
2275
2276   /* Let the column have a chance at selecting it. */
2277   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2278   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2279        list; list = (rtl ? list->prev : list->next))
2280     {
2281       PsppSheetViewColumn *candidate = list->data;
2282
2283       if (!candidate->visible)
2284         continue;
2285
2286       background_area->width = candidate->width;
2287       if ((background_area->x > x) ||
2288           (background_area->x + background_area->width <= x))
2289         {
2290           background_area->x += background_area->width;
2291           continue;
2292         }
2293
2294       /* we found the focus column */
2295
2296       pspp_sheet_view_adjust_cell_area (tree_view, candidate, background_area,
2297                                         TRUE, cell_area);
2298       *column = candidate;
2299       return TRUE;
2300     }
2301
2302   return FALSE;
2303 }
2304
2305 static gboolean
2306 pspp_sheet_view_button_press (GtkWidget      *widget,
2307                             GdkEventButton *event)
2308 {
2309   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
2310   GList *list;
2311   PsppSheetViewColumn *column = NULL;
2312   gint i;
2313   GdkRectangle background_area;
2314   GdkRectangle cell_area;
2315   gboolean rtl;
2316
2317   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2318   pspp_sheet_view_stop_editing (tree_view, FALSE);
2319
2320
2321   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2322    * we're done handling the button press.
2323    */
2324
2325   if (event->window == tree_view->priv->bin_window)
2326     {
2327       int node;
2328       GtkTreePath *path;
2329       gint dval;
2330       gint pre_val, aft_val;
2331       PsppSheetViewColumn *column = NULL;
2332       GtkCellRenderer *focus_cell = NULL;
2333       gboolean row_double_click = FALSE;
2334
2335       /* Empty tree? */
2336       if (tree_view->priv->row_count == 0)
2337         {
2338           grab_focus_and_unset_draw_keyfocus (tree_view);
2339           return TRUE;
2340         }
2341
2342       if (!find_click (tree_view, event->x, event->y, &node, &column,
2343                        &background_area, &cell_area))
2344         {
2345           grab_focus_and_unset_draw_keyfocus (tree_view);
2346           return FALSE;
2347         }
2348
2349       tree_view->priv->focus_column = column;
2350
2351       if (pspp_sheet_view_row_head_clicked (tree_view, node, column, event))
2352         return TRUE;
2353
2354       /* select */
2355       pre_val = tree_view->priv->vadjustment->value;
2356
2357       path = _pspp_sheet_view_find_path (tree_view, node);
2358
2359       /* we only handle selection modifications on the first button press
2360        */
2361       if (event->type == GDK_BUTTON_PRESS)
2362         {
2363           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2364             tree_view->priv->ctrl_pressed = TRUE;
2365           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2366             tree_view->priv->shift_pressed = TRUE;
2367
2368           focus_cell = _pspp_sheet_view_column_get_cell_at_pos (column, event->x - background_area.x);
2369           if (focus_cell)
2370             pspp_sheet_view_column_focus_cell (column, focus_cell);
2371
2372           if (event->state & GDK_CONTROL_MASK)
2373             {
2374               pspp_sheet_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2375               pspp_sheet_view_real_toggle_cursor_row (tree_view);
2376             }
2377           else if (event->state & GDK_SHIFT_MASK)
2378             {
2379               pspp_sheet_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2380               pspp_sheet_view_real_select_cursor_row (tree_view, FALSE);
2381             }
2382           else
2383             {
2384               pspp_sheet_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2385             }
2386
2387           if (tree_view->priv->anchor_column == NULL ||
2388               !(event->state & GDK_SHIFT_MASK))
2389             tree_view->priv->anchor_column = column;
2390           pspp_sheet_selection_unselect_all_columns (tree_view->priv->selection);
2391           pspp_sheet_selection_select_column_range (tree_view->priv->selection,
2392                                                     tree_view->priv->anchor_column,
2393                                                     column);
2394
2395           tree_view->priv->ctrl_pressed = FALSE;
2396           tree_view->priv->shift_pressed = FALSE;
2397         }
2398
2399       /* the treeview may have been scrolled because of _set_cursor,
2400        * correct here
2401        */
2402
2403       aft_val = tree_view->priv->vadjustment->value;
2404       dval = pre_val - aft_val;
2405
2406       cell_area.y += dval;
2407       background_area.y += dval;
2408
2409       /* Save press to possibly begin a drag
2410        */
2411       if (!tree_view->priv->in_grab &&
2412           tree_view->priv->pressed_button < 0)
2413         {
2414           tree_view->priv->pressed_button = event->button;
2415           tree_view->priv->press_start_x = event->x;
2416           tree_view->priv->press_start_y = event->y;
2417           tree_view->priv->press_start_node = node;
2418
2419           if (tree_view->priv->rubber_banding_enable
2420               && (tree_view->priv->selection->type == PSPP_SHEET_SELECTION_MULTIPLE ||
2421                   tree_view->priv->selection->type == PSPP_SHEET_SELECTION_RECTANGLE))
2422             {
2423               tree_view->priv->press_start_y += tree_view->priv->dy;
2424               tree_view->priv->rubber_band_x = event->x;
2425               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2426               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2427
2428               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2429                 tree_view->priv->rubber_band_ctrl = TRUE;
2430               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2431                 tree_view->priv->rubber_band_shift = TRUE;
2432
2433             }
2434         }
2435
2436       /* Test if a double click happened on the same row. */
2437       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2438         {
2439           int double_click_time, double_click_distance;
2440
2441           g_object_get (gtk_settings_get_for_screen (
2442                           gtk_widget_get_screen (widget)),
2443                         "gtk-double-click-time", &double_click_time,
2444                         "gtk-double-click-distance", &double_click_distance,
2445                         NULL);
2446
2447           /* Same conditions as _gdk_event_button_generate */
2448           if (tree_view->priv->last_button_x != -1 &&
2449               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2450               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2451               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2452             {
2453               /* We do no longer compare paths of this row and the
2454                * row clicked previously.  We use the double click
2455                * distance to decide whether this is a valid click,
2456                * allowing the mouse to slightly move over another row.
2457                */
2458               row_double_click = TRUE;
2459
2460               tree_view->priv->last_button_time = 0;
2461               tree_view->priv->last_button_x = -1;
2462               tree_view->priv->last_button_y = -1;
2463             }
2464           else
2465             {
2466               tree_view->priv->last_button_time = event->time;
2467               tree_view->priv->last_button_x = event->x;
2468               tree_view->priv->last_button_y = event->y;
2469             }
2470         }
2471
2472       if (row_double_click)
2473         {
2474           gtk_grab_remove (widget);
2475           pspp_sheet_view_row_activated (tree_view, path, column);
2476
2477           if (tree_view->priv->pressed_button == event->button)
2478             tree_view->priv->pressed_button = -1;
2479         }
2480
2481       gtk_tree_path_free (path);
2482
2483       /* If we activated the row through a double click we don't want to grab
2484        * focus back, as moving focus to another widget is pretty common.
2485        */
2486       if (!row_double_click)
2487         grab_focus_and_unset_draw_keyfocus (tree_view);
2488
2489       return TRUE;
2490     }
2491
2492   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2493    */
2494   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2495     {
2496       column = list->data;
2497       if (event->window == column->window &&
2498           column->resizable &&
2499           column->window)
2500         {
2501           gpointer drag_data;
2502
2503           if (gdk_pointer_grab (column->window, FALSE,
2504                                 GDK_POINTER_MOTION_HINT_MASK |
2505                                 GDK_BUTTON1_MOTION_MASK |
2506                                 GDK_BUTTON_RELEASE_MASK,
2507                                 NULL, NULL, event->time))
2508             return FALSE;
2509
2510           gtk_grab_add (widget);
2511           PSPP_SHEET_VIEW_SET_FLAG (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_RESIZE);
2512           column->resized_width = column->width;
2513
2514           /* block attached dnd signal handler */
2515           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2516           if (drag_data)
2517             g_signal_handlers_block_matched (widget,
2518                                              G_SIGNAL_MATCH_DATA,
2519                                              0, 0, NULL, NULL,
2520                                              drag_data);
2521
2522           tree_view->priv->drag_pos = i;
2523           tree_view->priv->x_drag = column->allocation.x + (rtl ? 0 : column->allocation.width);
2524
2525           if (!gtk_widget_has_focus (widget))
2526             gtk_widget_grab_focus (widget);
2527
2528           return TRUE;
2529         }
2530     }
2531   return FALSE;
2532 }
2533
2534 /* GtkWidget::button_release_event helper */
2535 static gboolean
2536 pspp_sheet_view_button_release_drag_column (GtkWidget      *widget,
2537                                           GdkEventButton *event)
2538 {
2539   PsppSheetView *tree_view;
2540   GList *l;
2541   gboolean rtl;
2542
2543   tree_view = PSPP_SHEET_VIEW (widget);
2544
2545   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2546   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2547   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2548
2549   /* Move the button back */
2550   g_return_val_if_fail (tree_view->priv->drag_column->button, FALSE);
2551
2552   g_object_ref (tree_view->priv->drag_column->button);
2553   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2554   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2555   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2556   g_object_unref (tree_view->priv->drag_column->button);
2557   gtk_widget_queue_resize (widget);
2558   if (tree_view->priv->drag_column->resizable)
2559     {
2560       gdk_window_raise (tree_view->priv->drag_column->window);
2561       gdk_window_show (tree_view->priv->drag_column->window);
2562     }
2563   else
2564     gdk_window_hide (tree_view->priv->drag_column->window);
2565
2566   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2567
2568   if (rtl)
2569     {
2570       if (tree_view->priv->cur_reorder &&
2571           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2572         pspp_sheet_view_move_column_after (tree_view, tree_view->priv->drag_column,
2573                                          tree_view->priv->cur_reorder->right_column);
2574     }
2575   else
2576     {
2577       if (tree_view->priv->cur_reorder &&
2578           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2579         pspp_sheet_view_move_column_after (tree_view, tree_view->priv->drag_column,
2580                                          tree_view->priv->cur_reorder->left_column);
2581     }
2582   tree_view->priv->drag_column = NULL;
2583   gdk_window_hide (tree_view->priv->drag_window);
2584
2585   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2586     g_slice_free (PsppSheetViewColumnReorder, l->data);
2587   g_list_free (tree_view->priv->column_drag_info);
2588   tree_view->priv->column_drag_info = NULL;
2589   tree_view->priv->cur_reorder = NULL;
2590
2591   if (tree_view->priv->drag_highlight_window)
2592     gdk_window_hide (tree_view->priv->drag_highlight_window);
2593
2594   /* Reset our flags */
2595   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2596   PSPP_SHEET_VIEW_UNSET_FLAG (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_DRAG);
2597
2598   return TRUE;
2599 }
2600
2601 /* GtkWidget::button_release_event helper */
2602 static gboolean
2603 pspp_sheet_view_button_release_column_resize (GtkWidget      *widget,
2604                                             GdkEventButton *event)
2605 {
2606   PsppSheetView *tree_view;
2607   gpointer drag_data;
2608
2609   tree_view = PSPP_SHEET_VIEW (widget);
2610
2611   tree_view->priv->drag_pos = -1;
2612
2613   /* unblock attached dnd signal handler */
2614   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2615   if (drag_data)
2616     g_signal_handlers_unblock_matched (widget,
2617                                        G_SIGNAL_MATCH_DATA,
2618                                        0, 0, NULL, NULL,
2619                                        drag_data);
2620
2621   PSPP_SHEET_VIEW_UNSET_FLAG (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_RESIZE);
2622   gtk_grab_remove (widget);
2623   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
2624                               event->time);
2625   return TRUE;
2626 }
2627
2628 static gboolean
2629 pspp_sheet_view_button_release_edit (PsppSheetView *tree_view,
2630                                      GdkEventButton *event)
2631 {
2632   GtkCellEditable *cell_editable;
2633   gchar *path_string;
2634   GtkTreePath *path;
2635   gint left, right;
2636   GtkTreeIter iter;
2637   PsppSheetViewColumn *column;
2638   GdkRectangle background_area;
2639   GdkRectangle cell_area;
2640   GdkRectangle area;
2641   guint modifiers;
2642   guint flags;
2643   int node;
2644
2645   if (event->window != tree_view->priv->bin_window)
2646     return FALSE;
2647
2648   /* Ignore a released button, if that button wasn't depressed */
2649   if (tree_view->priv->pressed_button != event->button)
2650     return FALSE;
2651
2652   if (!find_click (tree_view, event->x, event->y, &node, &column, &background_area,
2653                    &cell_area))
2654     return FALSE;
2655
2656   /* decide if we edit */
2657   path = _pspp_sheet_view_find_path (tree_view, node);
2658   modifiers = event->state & gtk_accelerator_get_default_mod_mask ();
2659   if (event->button != 1 || modifiers)
2660     return FALSE;
2661
2662   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2663   pspp_sheet_view_column_cell_set_cell_data (column,
2664                                              tree_view->priv->model,
2665                                              &iter);
2666
2667   if (!pspp_sheet_view_column_get_quick_edit (column)
2668       && _pspp_sheet_view_column_has_editable_cell (column))
2669     return FALSE;
2670
2671   flags = 0;                    /* FIXME: get the right flags */
2672   path_string = gtk_tree_path_to_string (path);
2673
2674   if (!_pspp_sheet_view_column_cell_event (column,
2675                                            &cell_editable,
2676                                            (GdkEvent *)event,
2677                                            path_string,
2678                                            &background_area,
2679                                            &cell_area, flags))
2680     return FALSE;
2681
2682   if (cell_editable == NULL)
2683     return FALSE;
2684
2685   pspp_sheet_view_real_set_cursor (tree_view, path,
2686                                    TRUE, TRUE);
2687   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2688
2689   area = cell_area;
2690   _pspp_sheet_view_column_get_neighbor_sizes (
2691     column, _pspp_sheet_view_column_get_edited_cell (column), &left, &right);
2692
2693   area.x += left;
2694   area.width -= right + left;
2695
2696   pspp_sheet_view_real_start_editing (tree_view,
2697                                       column,
2698                                       path,
2699                                       cell_editable,
2700                                       &area,
2701                                       (GdkEvent *)event,
2702                                       flags);
2703   g_free (path_string);
2704   gtk_tree_path_free (path);
2705   return TRUE;
2706 }
2707
2708 static gboolean
2709 pspp_sheet_view_button_release (GtkWidget      *widget,
2710                               GdkEventButton *event)
2711 {
2712   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
2713
2714   pspp_sheet_view_stop_editing (tree_view, FALSE);
2715   if (tree_view->priv->rubber_band_status != RUBBER_BAND_ACTIVE
2716       && pspp_sheet_view_button_release_edit (tree_view, event))
2717     {
2718       if (tree_view->priv->pressed_button == event->button)
2719         tree_view->priv->pressed_button = -1;
2720
2721       tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
2722       return TRUE;
2723     }
2724
2725   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_DRAG))
2726     return pspp_sheet_view_button_release_drag_column (widget, event);
2727
2728   if (tree_view->priv->rubber_band_status)
2729     pspp_sheet_view_stop_rubber_band (tree_view);
2730
2731   if (tree_view->priv->pressed_button == event->button)
2732     tree_view->priv->pressed_button = -1;
2733
2734   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_RESIZE))
2735     return pspp_sheet_view_button_release_column_resize (widget, event);
2736
2737   return FALSE;
2738 }
2739
2740 static gboolean
2741 pspp_sheet_view_grab_broken (GtkWidget          *widget,
2742                            GdkEventGrabBroken *event)
2743 {
2744   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
2745
2746   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_DRAG))
2747     pspp_sheet_view_button_release_drag_column (widget, (GdkEventButton *)event);
2748
2749   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_RESIZE))
2750     pspp_sheet_view_button_release_column_resize (widget, (GdkEventButton *)event);
2751
2752   return TRUE;
2753 }
2754
2755 /* GtkWidget::motion_event function set.
2756  */
2757
2758 static void
2759 do_prelight (PsppSheetView *tree_view,
2760              int node,
2761              /* these are in bin_window coords */
2762              gint         x,
2763              gint         y)
2764 {
2765   int prev_node = tree_view->priv->prelight_node;
2766
2767   if (prev_node != node)
2768     {
2769       tree_view->priv->prelight_node = node;
2770
2771       if (prev_node >= 0)
2772         _pspp_sheet_view_queue_draw_node (tree_view, prev_node, NULL);
2773
2774       if (node >= 0)
2775         _pspp_sheet_view_queue_draw_node (tree_view, node, NULL);
2776     }
2777 }
2778
2779 static void
2780 prelight_or_select (PsppSheetView *tree_view,
2781                     int node,
2782                     /* these are in bin_window coords */
2783                     gint         x,
2784                     gint         y)
2785 {
2786   PsppSheetSelectionMode mode = pspp_sheet_selection_get_mode (tree_view->priv->selection);
2787
2788   if (tree_view->priv->hover_selection &&
2789       (mode == PSPP_SHEET_SELECTION_SINGLE || mode == PSPP_SHEET_SELECTION_BROWSE) &&
2790       !(tree_view->priv->edited_column &&
2791         tree_view->priv->edited_column->editable_widget))
2792     {
2793       if (node >= 0)
2794         {
2795           if (!pspp_sheet_view_node_is_selected (tree_view, node))
2796             {
2797               GtkTreePath *path;
2798
2799               path = _pspp_sheet_view_find_path (tree_view, node);
2800               pspp_sheet_selection_select_path (tree_view->priv->selection, path);
2801               if (pspp_sheet_view_node_is_selected (tree_view, node))
2802                 {
2803                   PSPP_SHEET_VIEW_UNSET_FLAG (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS);
2804                   pspp_sheet_view_real_set_cursor (tree_view, path, FALSE, FALSE);
2805                 }
2806               gtk_tree_path_free (path);
2807             }
2808         }
2809
2810       else if (mode == PSPP_SHEET_SELECTION_SINGLE)
2811         pspp_sheet_selection_unselect_all (tree_view->priv->selection);
2812     }
2813
2814     do_prelight (tree_view, node, x, y);
2815 }
2816
2817 static void
2818 ensure_unprelighted (PsppSheetView *tree_view)
2819 {
2820   do_prelight (tree_view,
2821                -1,
2822                -1000, -1000); /* coords not possibly over an arrow */
2823
2824   g_assert (tree_view->priv->prelight_node < 0);
2825 }
2826
2827 static void
2828 update_prelight (PsppSheetView *tree_view,
2829                  gint         x,
2830                  gint         y)
2831 {
2832   int new_y;
2833   int node;
2834
2835   if (tree_view->priv->row_count == 0)
2836     return;
2837
2838   if (x == -10000)
2839     {
2840       ensure_unprelighted (tree_view);
2841       return;
2842     }
2843
2844   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
2845   if (new_y < 0)
2846     new_y = 0;
2847
2848   pspp_sheet_view_find_offset (tree_view, new_y, &node);
2849
2850   if (node >= 0)
2851     prelight_or_select (tree_view, node, x, y);
2852 }
2853
2854
2855
2856
2857 /* Our motion arrow is either a box (in the case of the original spot)
2858  * or an arrow.  It is expander_size wide.
2859  */
2860 /*
2861  * 11111111111111
2862  * 01111111111110
2863  * 00111111111100
2864  * 00011111111000
2865  * 00001111110000
2866  * 00000111100000
2867  * 00000111100000
2868  * 00000111100000
2869  * ~ ~ ~ ~ ~ ~ ~
2870  * 00000111100000
2871  * 00000111100000
2872  * 00000111100000
2873  * 00001111110000
2874  * 00011111111000
2875  * 00111111111100
2876  * 01111111111110
2877  * 11111111111111
2878  */
2879
2880 static void
2881 pspp_sheet_view_motion_draw_column_motion_arrow (PsppSheetView *tree_view)
2882 {
2883   PsppSheetViewColumnReorder *reorder = tree_view->priv->cur_reorder;
2884   GtkWidget *widget = GTK_WIDGET (tree_view);
2885   GdkBitmap *mask = NULL;
2886   gint x;
2887   gint y;
2888   gint width;
2889   gint height;
2890   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
2891   GdkWindowAttr attributes;
2892   guint attributes_mask;
2893
2894   if (!reorder ||
2895       reorder->left_column == tree_view->priv->drag_column ||
2896       reorder->right_column == tree_view->priv->drag_column)
2897     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2898   else if (reorder->left_column || reorder->right_column)
2899     {
2900       GdkRectangle visible_rect;
2901       pspp_sheet_view_get_visible_rect (tree_view, &visible_rect);
2902       if (reorder->left_column)
2903         x = reorder->left_column->allocation.x + reorder->left_column->allocation.width;
2904       else
2905         x = reorder->right_column->allocation.x;
2906
2907       if (x < visible_rect.x)
2908         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
2909       else if (x > visible_rect.x + visible_rect.width)
2910         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
2911       else
2912         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
2913     }
2914
2915   /* We want to draw the rectangle over the initial location. */
2916   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2917     {
2918       GdkGC *gc;
2919       GdkColor col;
2920
2921       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2922         {
2923           if (tree_view->priv->drag_highlight_window)
2924             {
2925               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2926                                         NULL);
2927               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2928             }
2929
2930           attributes.window_type = GDK_WINDOW_CHILD;
2931           attributes.wclass = GDK_INPUT_OUTPUT;
2932           attributes.x = tree_view->priv->drag_column_x;
2933           attributes.y = 0;
2934           width = attributes.width = tree_view->priv->drag_column->allocation.width;
2935           height = attributes.height = tree_view->priv->drag_column->allocation.height;
2936           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2937           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2938           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2939           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2940           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
2941           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2942
2943           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2944           gc = gdk_gc_new (mask);
2945           col.pixel = 1;
2946           gdk_gc_set_foreground (gc, &col);
2947           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2948           col.pixel = 0;
2949           gdk_gc_set_foreground(gc, &col);
2950           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
2951           g_object_unref (gc);
2952
2953           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2954                                          mask, 0, 0);
2955           if (mask) g_object_unref (mask);
2956           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2957         }
2958     }
2959   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
2960     {
2961       gint i, j = 1;
2962       GdkGC *gc;
2963       GdkColor col;
2964
2965       width = tree_view->priv->expander_size;
2966
2967       /* Get x, y, width, height of arrow */
2968       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
2969       if (reorder->left_column)
2970         {
2971           x += reorder->left_column->allocation.x + reorder->left_column->allocation.width - width/2;
2972           height = reorder->left_column->allocation.height;
2973         }
2974       else
2975         {
2976           x += reorder->right_column->allocation.x - width/2;
2977           height = reorder->right_column->allocation.height;
2978         }
2979       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
2980       height += tree_view->priv->expander_size;
2981
2982       /* Create the new window */
2983       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
2984         {
2985           if (tree_view->priv->drag_highlight_window)
2986             {
2987               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2988                                         NULL);
2989               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2990             }
2991
2992           attributes.window_type = GDK_WINDOW_TEMP;
2993           attributes.wclass = GDK_INPUT_OUTPUT;
2994           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2995           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2996           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2997           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2998           attributes.x = x;
2999           attributes.y = y;
3000           attributes.width = width;
3001           attributes.height = height;
3002           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3003                                                                    &attributes, attributes_mask);
3004           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3005
3006           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3007           gc = gdk_gc_new (mask);
3008           col.pixel = 1;
3009           gdk_gc_set_foreground (gc, &col);
3010           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3011
3012           /* Draw the 2 arrows as per above */
3013           col.pixel = 0;
3014           gdk_gc_set_foreground (gc, &col);
3015           for (i = 0; i < width; i ++)
3016             {
3017               if (i == (width/2 - 1))
3018                 continue;
3019               gdk_draw_line (mask, gc, i, j, i, height - j);
3020               if (i < (width/2 - 1))
3021                 j++;
3022               else
3023                 j--;
3024             }
3025           g_object_unref (gc);
3026           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3027                                          mask, 0, 0);
3028           if (mask) g_object_unref (mask);
3029         }
3030
3031       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3032       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3033     }
3034   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3035            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3036     {
3037       gint i, j = 1;
3038       GdkGC *gc;
3039       GdkColor col;
3040
3041       width = tree_view->priv->expander_size;
3042
3043       /* Get x, y, width, height of arrow */
3044       width = width/2; /* remember, the arrow only takes half the available width */
3045       gdk_window_get_origin (widget->window, &x, &y);
3046       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3047         x += widget->allocation.width - width;
3048
3049       if (reorder->left_column)
3050         height = reorder->left_column->allocation.height;
3051       else
3052         height = reorder->right_column->allocation.height;
3053
3054       y -= tree_view->priv->expander_size;
3055       height += 2*tree_view->priv->expander_size;
3056
3057       /* Create the new window */
3058       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3059           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3060         {
3061           if (tree_view->priv->drag_highlight_window)
3062             {
3063               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3064                                         NULL);
3065               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3066             }
3067
3068           attributes.window_type = GDK_WINDOW_TEMP;
3069           attributes.wclass = GDK_INPUT_OUTPUT;
3070           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3071           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3072           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3073           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3074           attributes.x = x;
3075           attributes.y = y;
3076           attributes.width = width;
3077           attributes.height = height;
3078           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3079           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3080
3081           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3082           gc = gdk_gc_new (mask);
3083           col.pixel = 1;
3084           gdk_gc_set_foreground (gc, &col);
3085           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3086
3087           /* Draw the 2 arrows as per above */
3088           col.pixel = 0;
3089           gdk_gc_set_foreground (gc, &col);
3090           j = tree_view->priv->expander_size;
3091           for (i = 0; i < width; i ++)
3092             {
3093               gint k;
3094               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3095                 k = width - i - 1;
3096               else
3097                 k = i;
3098               gdk_draw_line (mask, gc, k, j, k, height - j);
3099               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
3100               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
3101               j--;
3102             }
3103           g_object_unref (gc);
3104           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3105                                          mask, 0, 0);
3106           if (mask) g_object_unref (mask);
3107         }
3108
3109       tree_view->priv->drag_column_window_state = arrow_type;
3110       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3111    }
3112   else
3113     {
3114       g_warning (G_STRLOC"Invalid PsppSheetViewColumnReorder struct");
3115       gdk_window_hide (tree_view->priv->drag_highlight_window);
3116       return;
3117     }
3118
3119   gdk_window_show (tree_view->priv->drag_highlight_window);
3120   gdk_window_raise (tree_view->priv->drag_highlight_window);
3121 }
3122
3123 static gboolean
3124 pspp_sheet_view_motion_resize_column (GtkWidget      *widget,
3125                                     GdkEventMotion *event)
3126 {
3127   gint x;
3128   gint new_width;
3129   PsppSheetViewColumn *column;
3130   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
3131
3132   column = pspp_sheet_view_get_column (tree_view, tree_view->priv->drag_pos);
3133
3134   if (event->is_hint || event->window != widget->window)
3135     gtk_widget_get_pointer (widget, &x, NULL);
3136   else
3137     x = event->x;
3138
3139   if (tree_view->priv->hadjustment)
3140     x += tree_view->priv->hadjustment->value;
3141
3142   new_width = pspp_sheet_view_new_column_width (tree_view,
3143                                               tree_view->priv->drag_pos, &x);
3144   if (x != tree_view->priv->x_drag &&
3145       (new_width != column->fixed_width))
3146     {
3147       column->use_resized_width = TRUE;
3148       column->resized_width = new_width;
3149 #if 0
3150       if (column->expand)
3151         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3152 #endif
3153       gtk_widget_queue_resize (widget);
3154     }
3155
3156   return FALSE;
3157 }
3158
3159
3160 static void
3161 pspp_sheet_view_update_current_reorder (PsppSheetView *tree_view)
3162 {
3163   PsppSheetViewColumnReorder *reorder = NULL;
3164   GList *list;
3165   gint mouse_x;
3166
3167   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3168   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3169     {
3170       reorder = (PsppSheetViewColumnReorder *) list->data;
3171       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3172         break;
3173       reorder = NULL;
3174     }
3175
3176   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3177       return;*/
3178
3179   tree_view->priv->cur_reorder = reorder;
3180   pspp_sheet_view_motion_draw_column_motion_arrow (tree_view);
3181 }
3182
3183 static void
3184 pspp_sheet_view_vertical_autoscroll (PsppSheetView *tree_view)
3185 {
3186   GdkRectangle visible_rect;
3187   gint y;
3188   gint offset;
3189   gfloat value;
3190
3191   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3192   y += tree_view->priv->dy;
3193
3194   pspp_sheet_view_get_visible_rect (tree_view, &visible_rect);
3195
3196   /* see if we are near the edge. */
3197   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3198   if (offset > 0)
3199     {
3200       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3201       if (offset < 0)
3202         return;
3203     }
3204
3205   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
3206                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
3207   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
3208 }
3209
3210 static gboolean
3211 pspp_sheet_view_horizontal_autoscroll (PsppSheetView *tree_view)
3212 {
3213   GdkRectangle visible_rect;
3214   gint x;
3215   gint offset;
3216   gfloat value;
3217
3218   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3219
3220   pspp_sheet_view_get_visible_rect (tree_view, &visible_rect);
3221
3222   /* See if we are near the edge. */
3223   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3224   if (offset > 0)
3225     {
3226       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3227       if (offset < 0)
3228         return TRUE;
3229     }
3230   offset = offset/3;
3231
3232   value = CLAMP (tree_view->priv->hadjustment->value + offset,
3233                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
3234   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
3235
3236   return TRUE;
3237
3238 }
3239
3240 static gboolean
3241 pspp_sheet_view_motion_drag_column (GtkWidget      *widget,
3242                                   GdkEventMotion *event)
3243 {
3244   PsppSheetView *tree_view = (PsppSheetView *) widget;
3245   PsppSheetViewColumn *column = tree_view->priv->drag_column;
3246   gint x, y;
3247
3248   /* Sanity Check */
3249   if ((column == NULL) ||
3250       (event->window != tree_view->priv->drag_window))
3251     return FALSE;
3252
3253   /* Handle moving the header */
3254   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3255   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3256              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->allocation.width);
3257   gdk_window_move (tree_view->priv->drag_window, x, y);
3258
3259   /* autoscroll, if needed */
3260   pspp_sheet_view_horizontal_autoscroll (tree_view);
3261   /* Update the current reorder position and arrow; */
3262   pspp_sheet_view_update_current_reorder (tree_view);
3263
3264   return TRUE;
3265 }
3266
3267 static void
3268 pspp_sheet_view_stop_rubber_band (PsppSheetView *tree_view)
3269 {
3270   remove_scroll_timeout (tree_view);
3271   gtk_grab_remove (GTK_WIDGET (tree_view));
3272
3273   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3274     {
3275       GtkTreePath *tmp_path;
3276
3277       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3278
3279       /* The anchor path should be set to the start path */
3280       tmp_path = _pspp_sheet_view_find_path (tree_view,
3281                                            tree_view->priv->rubber_band_start_node);
3282
3283       if (tree_view->priv->anchor)
3284         gtk_tree_row_reference_free (tree_view->priv->anchor);
3285
3286       tree_view->priv->anchor =
3287         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3288                                           tree_view->priv->model,
3289                                           tmp_path);
3290
3291       gtk_tree_path_free (tmp_path);
3292
3293       /* ... and the cursor to the end path */
3294       tmp_path = _pspp_sheet_view_find_path (tree_view,
3295                                            tree_view->priv->rubber_band_end_node);
3296       pspp_sheet_view_real_set_cursor (PSPP_SHEET_VIEW (tree_view), tmp_path, FALSE, FALSE);
3297       gtk_tree_path_free (tmp_path);
3298
3299       _pspp_sheet_selection_emit_changed (tree_view->priv->selection);
3300     }
3301
3302   /* Clear status variables */
3303   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3304   tree_view->priv->rubber_band_shift = 0;
3305   tree_view->priv->rubber_band_ctrl = 0;
3306
3307   tree_view->priv->rubber_band_start_node = -1;
3308   tree_view->priv->rubber_band_end_node = -1;
3309 }
3310
3311 static void
3312 pspp_sheet_view_update_rubber_band_selection_range (PsppSheetView *tree_view,
3313                                                  int start_node,
3314                                                  int end_node,
3315                                                  gboolean     select,
3316                                                  gboolean     skip_start,
3317                                                  gboolean     skip_end)
3318 {
3319   if (start_node == end_node)
3320     return;
3321
3322   /* We skip the first node and jump inside the loop */
3323   if (skip_start)
3324     goto skip_first;
3325
3326   do
3327     {
3328       /* Small optimization by assuming insensitive nodes are never
3329        * selected.
3330        */
3331       if (select)
3332         {
3333           if (tree_view->priv->rubber_band_shift)
3334             pspp_sheet_view_node_select (tree_view, start_node);
3335           else if (tree_view->priv->rubber_band_ctrl)
3336             {
3337               /* Toggle the selection state */
3338               if (pspp_sheet_view_node_is_selected (tree_view, start_node))
3339                 pspp_sheet_view_node_unselect (tree_view, start_node);
3340               else
3341                 pspp_sheet_view_node_select (tree_view, start_node);
3342             }
3343           else
3344             pspp_sheet_view_node_select (tree_view, start_node);
3345         }
3346       else
3347         {
3348           /* Mirror the above */
3349           if (tree_view->priv->rubber_band_shift)
3350                 pspp_sheet_view_node_unselect (tree_view, start_node);
3351           else if (tree_view->priv->rubber_band_ctrl)
3352             {
3353               /* Toggle the selection state */
3354               if (pspp_sheet_view_node_is_selected (tree_view, start_node))
3355                 pspp_sheet_view_node_unselect (tree_view, start_node);
3356               else
3357                 pspp_sheet_view_node_select (tree_view, start_node);
3358             }
3359           else
3360             pspp_sheet_view_node_unselect (tree_view, start_node);
3361         }
3362
3363       _pspp_sheet_view_queue_draw_node (tree_view, start_node, NULL);
3364
3365       if (start_node == end_node)
3366         break;
3367
3368 skip_first:
3369
3370       start_node = pspp_sheet_view_node_next (tree_view, start_node);
3371
3372       if (start_node < 0)
3373         /* Ran out of tree */
3374         break;
3375
3376       if (skip_end && start_node == end_node)
3377         break;
3378     }
3379   while (TRUE);
3380 }
3381
3382 static gint
3383 pspp_sheet_view_node_find_offset (PsppSheetView *tree_view,
3384                                   int node)
3385 {
3386   return node * tree_view->priv->fixed_height;
3387 }
3388
3389 static gint
3390 pspp_sheet_view_find_offset (PsppSheetView *tree_view,
3391                              gint height,
3392                              int *new_node)
3393 {
3394   int fixed_height = tree_view->priv->fixed_height;
3395   if (fixed_height <= 0
3396       || height < 0
3397       || height >= tree_view->priv->row_count * fixed_height)
3398     {
3399       *new_node = -1;
3400       return 0;
3401     }
3402   else
3403     {
3404       *new_node = height / fixed_height;
3405       return height % fixed_height;
3406     }
3407 }
3408
3409 static void
3410 pspp_sheet_view_update_rubber_band_selection (PsppSheetView *tree_view)
3411 {
3412   int start_node;
3413   int end_node;
3414
3415   pspp_sheet_view_find_offset (tree_view, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_node);
3416   pspp_sheet_view_find_offset (tree_view, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_node);
3417
3418   /* Handle the start area first */
3419   if (tree_view->priv->rubber_band_start_node < 0)
3420     {
3421       pspp_sheet_view_update_rubber_band_selection_range (tree_view,
3422                                                        start_node,
3423                                                        end_node,
3424                                                        TRUE,
3425                                                        FALSE,
3426                                                        FALSE);
3427     }
3428   else if (start_node < tree_view->priv->rubber_band_start_node)
3429     {
3430       /* New node is above the old one; selection became bigger */
3431       pspp_sheet_view_update_rubber_band_selection_range (tree_view,
3432                                                        start_node,
3433                                                        tree_view->priv->rubber_band_start_node,
3434                                                        TRUE,
3435                                                        FALSE,
3436                                                        TRUE);
3437     }
3438   else if (start_node > tree_view->priv->rubber_band_start_node)
3439     {
3440       /* New node is below the old one; selection became smaller */
3441       pspp_sheet_view_update_rubber_band_selection_range (tree_view,
3442                                                        tree_view->priv->rubber_band_start_node,
3443                                                        start_node,
3444                                                        FALSE,
3445                                                        FALSE,
3446                                                        TRUE);
3447     }
3448
3449   tree_view->priv->rubber_band_start_node = start_node;
3450
3451   /* Next, handle the end area */
3452   if (tree_view->priv->rubber_band_end_node < 0)
3453     {
3454       /* In the event this happens, start_node was also -1; this case is
3455        * handled above.
3456        */
3457     }
3458   else if (end_node < 0)
3459     {
3460       /* Find the last node in the tree */
3461       pspp_sheet_view_find_offset (tree_view, tree_view->priv->height - 1,
3462                                &end_node);
3463
3464       /* Selection reached end of the tree */
3465       pspp_sheet_view_update_rubber_band_selection_range (tree_view,
3466                                                        tree_view->priv->rubber_band_end_node,
3467                                                        end_node,
3468                                                        TRUE,
3469                                                        TRUE,
3470                                                        FALSE);
3471     }
3472   else if (end_node > tree_view->priv->rubber_band_end_node)
3473     {
3474       /* New node is below the old one; selection became bigger */
3475       pspp_sheet_view_update_rubber_band_selection_range (tree_view,
3476                                                        tree_view->priv->rubber_band_end_node,
3477                                                        end_node,
3478                                                        TRUE,
3479                                                        TRUE,
3480                                                        FALSE);
3481     }
3482   else if (end_node < tree_view->priv->rubber_band_end_node)
3483     {
3484       /* New node is above the old one; selection became smaller */
3485       pspp_sheet_view_update_rubber_band_selection_range (tree_view,
3486                                                        end_node,
3487                                                        tree_view->priv->rubber_band_end_node,
3488                                                        FALSE,
3489                                                        TRUE,
3490                                                        FALSE);
3491     }
3492
3493   tree_view->priv->rubber_band_end_node = end_node;
3494 }
3495
3496 static void
3497 pspp_sheet_view_update_rubber_band (PsppSheetView *tree_view)
3498 {
3499   gint x, y;
3500   GdkRectangle old_area;
3501   GdkRectangle new_area;
3502   GdkRectangle common;
3503   GdkRegion *invalid_region;
3504   PsppSheetViewColumn *column;
3505
3506   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
3507   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
3508   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
3509   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
3510
3511   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
3512
3513   x = MAX (x, 0);
3514   y = MAX (y, 0) + tree_view->priv->dy;
3515
3516   new_area.x = MIN (tree_view->priv->press_start_x, x);
3517   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
3518   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
3519   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
3520
3521   invalid_region = gdk_region_rectangle (&old_area);
3522   gdk_region_union_with_rect (invalid_region, &new_area);
3523
3524   gdk_rectangle_intersect (&old_area, &new_area, &common);
3525   if (common.width > 2 && common.height > 2)
3526     {
3527       GdkRegion *common_region;
3528
3529       /* make sure the border is invalidated */
3530       common.x += 1;
3531       common.y += 1;
3532       common.width -= 2;
3533       common.height -= 2;
3534
3535       common_region = gdk_region_rectangle (&common);
3536
3537       gdk_region_subtract (invalid_region, common_region);
3538       gdk_region_destroy (common_region);
3539     }
3540
3541   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
3542
3543   gdk_region_destroy (invalid_region);
3544
3545   tree_view->priv->rubber_band_x = x;
3546   tree_view->priv->rubber_band_y = y;
3547   pspp_sheet_view_get_path_at_pos (tree_view, x, y, NULL, &column, NULL, NULL);
3548
3549   pspp_sheet_selection_unselect_all_columns (tree_view->priv->selection);
3550   pspp_sheet_selection_select_column_range (tree_view->priv->selection,
3551                                             tree_view->priv->anchor_column,
3552                                             column);
3553
3554   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3555
3556   pspp_sheet_view_update_rubber_band_selection (tree_view);
3557 }
3558
3559 static void
3560 pspp_sheet_view_paint_rubber_band (PsppSheetView  *tree_view,
3561                                 GdkRectangle *area)
3562 {
3563   cairo_t *cr;
3564   GdkRectangle rect;
3565   GdkRectangle rubber_rect;
3566
3567   return;
3568   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
3569   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
3570   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
3571   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
3572
3573   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
3574     return;
3575
3576   cr = gdk_cairo_create (tree_view->priv->bin_window);
3577   cairo_set_line_width (cr, 1.0);
3578
3579   cairo_set_source_rgba (cr,
3580                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
3581                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
3582                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
3583                          .25);
3584
3585   gdk_cairo_rectangle (cr, &rect);
3586   cairo_clip (cr);
3587   cairo_paint (cr);
3588
3589   cairo_set_source_rgb (cr,
3590                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
3591                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
3592                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
3593
3594   cairo_rectangle (cr,
3595                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
3596                    rubber_rect.width - 1, rubber_rect.height - 1);
3597   cairo_stroke (cr);
3598
3599   cairo_destroy (cr);
3600 }
3601
3602 static gboolean
3603 pspp_sheet_view_motion_bin_window (GtkWidget      *widget,
3604                                  GdkEventMotion *event)
3605 {
3606   PsppSheetView *tree_view;
3607   int node;
3608   gint new_y;
3609
3610   tree_view = (PsppSheetView *) widget;
3611
3612   if (tree_view->priv->row_count == 0)
3613     return FALSE;
3614
3615   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
3616     {
3617       GdkRectangle background_area, cell_area;
3618       PsppSheetViewColumn *column;
3619
3620       if (find_click (tree_view, event->x, event->y, &node, &column,
3621                       &background_area, &cell_area)
3622           && tree_view->priv->focus_column == column
3623           && tree_view->priv->press_start_node == node)
3624         return FALSE;
3625
3626       gtk_grab_add (GTK_WIDGET (tree_view));
3627       pspp_sheet_view_update_rubber_band (tree_view);
3628
3629       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
3630     }
3631   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3632     {
3633       pspp_sheet_view_update_rubber_band (tree_view);
3634
3635       add_scroll_timeout (tree_view);
3636     }
3637
3638   /* only check for an initiated drag when a button is pressed */
3639   if (tree_view->priv->pressed_button >= 0
3640       && !tree_view->priv->rubber_band_status)
3641     pspp_sheet_view_maybe_begin_dragging_row (tree_view, event);
3642
3643   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
3644   if (new_y < 0)
3645     new_y = 0;
3646
3647   pspp_sheet_view_find_offset (tree_view, new_y, &node);
3648
3649   tree_view->priv->event_last_x = event->x;
3650   tree_view->priv->event_last_y = event->y;
3651
3652   prelight_or_select (tree_view, node, event->x, event->y);
3653
3654   return TRUE;
3655 }
3656
3657 static gboolean
3658 pspp_sheet_view_motion (GtkWidget      *widget,
3659                       GdkEventMotion *event)
3660 {
3661   PsppSheetView *tree_view;
3662
3663   tree_view = (PsppSheetView *) widget;
3664
3665   /* Resizing a column */
3666   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_RESIZE))
3667     return pspp_sheet_view_motion_resize_column (widget, event);
3668
3669   /* Drag column */
3670   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_DRAG))
3671     return pspp_sheet_view_motion_drag_column (widget, event);
3672
3673   /* Sanity check it */
3674   if (event->window == tree_view->priv->bin_window)
3675     return pspp_sheet_view_motion_bin_window (widget, event);
3676
3677   return FALSE;
3678 }
3679
3680 /* Invalidate the focus rectangle near the edge of the bin_window; used when
3681  * the tree is empty.
3682  */
3683 static void
3684 invalidate_empty_focus (PsppSheetView *tree_view)
3685 {
3686   GdkRectangle area;
3687
3688   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
3689     return;
3690
3691   area.x = 0;
3692   area.y = 0;
3693   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
3694   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
3695 }
3696
3697 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
3698  * is empty.
3699  */
3700 static void
3701 draw_empty_focus (PsppSheetView *tree_view, GdkRectangle *clip_area)
3702 {
3703   GtkWidget *widget = GTK_WIDGET (tree_view);
3704   gint w, h;
3705
3706   if (!gtk_widget_has_focus (widget))
3707     return;
3708
3709   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
3710
3711   w -= 2;
3712   h -= 2;
3713
3714   if (w > 0 && h > 0)
3715     gtk_paint_focus (gtk_widget_get_style (widget),
3716                      tree_view->priv->bin_window,
3717                      gtk_widget_get_state (widget),
3718                      clip_area,
3719                      widget,
3720                      NULL,
3721                      1, 1, w, h);
3722 }
3723
3724 static void
3725 pspp_sheet_view_draw_grid_lines (PsppSheetView    *tree_view,
3726                                GdkEventExpose *event,
3727                                  gint            n_visible_columns,
3728                                  gint min_y,
3729                                  gint max_y)
3730 {
3731   GList *list = tree_view->priv->columns;
3732   gint i = 0;
3733   gint current_x = 0;
3734   gint height;
3735
3736   if (tree_view->priv->grid_lines != PSPP_SHEET_VIEW_GRID_LINES_VERTICAL
3737       && tree_view->priv->grid_lines != PSPP_SHEET_VIEW_GRID_LINES_BOTH)
3738     return;
3739
3740   gdk_drawable_get_size (event->window, NULL, &height);
3741
3742   /* Only draw the lines for visible rows and columns */
3743   for (list = tree_view->priv->columns; list; list = list->next, i++)
3744     {
3745       PsppSheetViewColumn *column = list->data;
3746
3747       /* We don't want a line for the last column */
3748       if (i == n_visible_columns - 1)
3749         break;
3750
3751       if (! column->visible)
3752         continue;
3753
3754       current_x += column->width;
3755
3756       if (current_x - 1 >= event->area.x
3757           && current_x - 1 < event->area.x + event->area.width)
3758         gdk_draw_line (event->window,
3759                        tree_view->priv->grid_line_gc[GTK_WIDGET(tree_view)->state],
3760                        current_x - 1, min_y,
3761                        current_x - 1, max_y - min_y);
3762     }
3763 }
3764
3765 /* Warning: Very scary function.
3766  * Modify at your own risk
3767  *
3768  * KEEP IN SYNC WITH pspp_sheet_view_create_row_drag_icon()!
3769  * FIXME: It's not...
3770  */
3771 static gboolean
3772 pspp_sheet_view_bin_expose (GtkWidget      *widget,
3773                           GdkEventExpose *event)
3774 {
3775   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
3776   GtkTreePath *path;
3777   GList *list;
3778   int node;
3779   int cursor = -1;
3780   int drag_highlight = -1;
3781   GtkTreeIter iter;
3782   gint new_y;
3783   gint y_offset, cell_offset;
3784   gint max_height;
3785   GdkRectangle background_area;
3786   GdkRectangle cell_area;
3787   guint flags;
3788   gint bin_window_width;
3789   gint bin_window_height;
3790   GtkTreePath *cursor_path;
3791   GtkTreePath *drag_dest_path;
3792   GList *first_column, *last_column;
3793   gint vertical_separator;
3794   gint horizontal_separator;
3795   gint focus_line_width;
3796   gboolean allow_rules;
3797   gboolean has_special_cell;
3798   gboolean rtl;
3799   gint n_visible_columns;
3800   gint grid_line_width;
3801   gboolean row_ending_details;
3802   gboolean draw_vgrid_lines, draw_hgrid_lines;
3803   gint min_y, max_y;
3804
3805   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3806
3807   gtk_widget_style_get (widget,
3808                         "horizontal-separator", &horizontal_separator,
3809                         "vertical-separator", &vertical_separator,
3810                         "allow-rules", &allow_rules,
3811                         "focus-line-width", &focus_line_width,
3812                         "row-ending-details", &row_ending_details,
3813                         NULL);
3814
3815   if (tree_view->priv->row_count == 0)
3816     {
3817       draw_empty_focus (tree_view, &event->area);
3818       return TRUE;
3819     }
3820
3821   /* clip event->area to the visible area */
3822   if (event->area.height < 0)
3823     return TRUE;
3824
3825   validate_visible_area (tree_view);
3826
3827   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
3828
3829   if (new_y < 0)
3830     new_y = 0;
3831   y_offset = -pspp_sheet_view_find_offset (tree_view, new_y, &node);
3832   gdk_drawable_get_size (tree_view->priv->bin_window,
3833                          &bin_window_width, &bin_window_height);
3834
3835   if (tree_view->priv->height < bin_window_height)
3836     {
3837       gtk_paint_flat_box (widget->style,
3838                           event->window,
3839                           widget->state,
3840                           GTK_SHADOW_NONE,
3841                           &event->area,
3842                           widget,
3843                           "cell_even",
3844                           0, tree_view->priv->height,
3845                           bin_window_width,
3846                           bin_window_height - tree_view->priv->height);
3847     }
3848
3849   if (node < 0)
3850     return TRUE;
3851
3852   /* find the path for the node */
3853   path = _pspp_sheet_view_find_path ((PsppSheetView *)widget, node);
3854   gtk_tree_model_get_iter (tree_view->priv->model,
3855                            &iter,
3856                            path);
3857   gtk_tree_path_free (path);
3858
3859   cursor_path = NULL;
3860   drag_dest_path = NULL;
3861
3862   if (tree_view->priv->cursor)
3863     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
3864
3865   if (cursor_path)
3866     _pspp_sheet_view_find_node (tree_view, cursor_path, &cursor);
3867
3868   if (tree_view->priv->drag_dest_row)
3869     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
3870
3871   if (drag_dest_path)
3872     _pspp_sheet_view_find_node (tree_view, drag_dest_path,
3873                                 &drag_highlight);
3874
3875   draw_vgrid_lines =
3876     tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_VERTICAL
3877     || tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_BOTH;
3878   draw_hgrid_lines =
3879     tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_HORIZONTAL
3880     || tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_BOTH;
3881
3882   if (draw_vgrid_lines || draw_hgrid_lines)
3883     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
3884
3885   n_visible_columns = 0;
3886   for (list = tree_view->priv->columns; list; list = list->next)
3887     {
3888       if (! PSPP_SHEET_VIEW_COLUMN (list->data)->visible)
3889         continue;
3890       n_visible_columns ++;
3891     }
3892
3893   /* Find the last column */
3894   for (last_column = g_list_last (tree_view->priv->columns);
3895        last_column && !(PSPP_SHEET_VIEW_COLUMN (last_column->data)->visible);
3896        last_column = last_column->prev)
3897     ;
3898
3899   /* and the first */
3900   for (first_column = g_list_first (tree_view->priv->columns);
3901        first_column && !(PSPP_SHEET_VIEW_COLUMN (first_column->data)->visible);
3902        first_column = first_column->next)
3903     ;
3904
3905   /* Actually process the expose event.  To do this, we want to
3906    * start at the first node of the event, and walk the tree in
3907    * order, drawing each successive node.
3908    */
3909
3910   min_y = y_offset;
3911   do
3912     {
3913       gboolean parity;
3914       gboolean is_first = FALSE;
3915       gboolean is_last = FALSE;
3916       gboolean done = FALSE;
3917       gboolean selected;
3918
3919       max_height = ROW_HEIGHT (tree_view);
3920
3921       cell_offset = 0;
3922
3923       background_area.y = y_offset + event->area.y;
3924       background_area.height = max_height;
3925       max_y = background_area.y + max_height;
3926
3927       flags = 0;
3928
3929       if (node == tree_view->priv->prelight_node)
3930         flags |= GTK_CELL_RENDERER_PRELIT;
3931
3932       selected = pspp_sheet_view_node_is_selected (tree_view, node);
3933
3934       parity = node % 2;
3935
3936       if (tree_view->priv->special_cells == PSPP_SHEET_VIEW_SPECIAL_CELLS_DETECT)
3937         {
3938           /* we *need* to set cell data on all cells before the call
3939            * to _has_special_cell, else _has_special_cell() does not
3940            * return a correct value.
3941            */
3942           for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
3943                list;
3944                list = (rtl ? list->prev : list->next))
3945             {
3946               PsppSheetViewColumn *column = list->data;
3947               pspp_sheet_view_column_cell_set_cell_data (column,
3948                                                          tree_view->priv->model,
3949                                                          &iter);
3950             }
3951
3952           has_special_cell = pspp_sheet_view_has_special_cell (tree_view);
3953         }
3954       else
3955         has_special_cell = tree_view->priv->special_cells == PSPP_SHEET_VIEW_SPECIAL_CELLS_YES;
3956
3957       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
3958            list;
3959            list = (rtl ? list->prev : list->next))
3960         {
3961           PsppSheetViewColumn *column = list->data;
3962           const gchar *detail = NULL;
3963           gboolean selected_column;
3964           GtkStateType state;
3965
3966           if (!column->visible)
3967             continue;
3968
3969           if (tree_view->priv->selection->type == PSPP_SHEET_SELECTION_RECTANGLE)
3970             selected_column = column->selected && column->selectable;
3971           else
3972             selected_column = TRUE;
3973
3974           if (cell_offset > event->area.x + event->area.width ||
3975               cell_offset + column->width < event->area.x)
3976             {
3977               cell_offset += column->width;
3978               continue;
3979             }
3980
3981           if (selected && selected_column)
3982             flags |= GTK_CELL_RENDERER_SELECTED;
3983           else
3984             flags &= ~GTK_CELL_RENDERER_SELECTED;
3985
3986           if (column->show_sort_indicator)
3987             flags |= GTK_CELL_RENDERER_SORTED;
3988           else
3989             flags &= ~GTK_CELL_RENDERER_SORTED;
3990
3991           if (cursor == node)
3992             flags |= GTK_CELL_RENDERER_FOCUSED;
3993           else
3994             flags &= ~GTK_CELL_RENDERER_FOCUSED;
3995
3996           background_area.x = cell_offset;
3997           background_area.width = column->width;
3998
3999           cell_area = background_area;
4000           cell_area.y += vertical_separator / 2;
4001           cell_area.x += horizontal_separator / 2;
4002           cell_area.height -= vertical_separator;
4003           cell_area.width -= horizontal_separator;
4004
4005           if (draw_vgrid_lines)
4006             {
4007               if (list == first_column)
4008                 {
4009                   cell_area.width -= grid_line_width / 2;
4010                 }
4011               else if (list == last_column)
4012                 {
4013                   cell_area.x += grid_line_width / 2;
4014                   cell_area.width -= grid_line_width / 2;
4015                 }
4016               else
4017                 {
4018                   cell_area.x += grid_line_width / 2;
4019                   cell_area.width -= grid_line_width;
4020                 }
4021             }
4022
4023           if (draw_hgrid_lines)
4024             {
4025               cell_area.y += grid_line_width / 2;
4026               cell_area.height -= grid_line_width;
4027             }
4028
4029           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
4030             {
4031               cell_offset += column->width;
4032               continue;
4033             }
4034
4035           pspp_sheet_view_column_cell_set_cell_data (column,
4036                                                      tree_view->priv->model,
4037                                                      &iter);
4038
4039           /* Select the detail for drawing the cell.  relevant
4040            * factors are parity, sortedness, and whether to
4041            * display rules.
4042            */
4043           if (allow_rules && tree_view->priv->has_rules)
4044             {
4045               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4046                   n_visible_columns >= 3)
4047                 {
4048                   if (parity)
4049                     detail = "cell_odd_ruled_sorted";
4050                   else
4051                     detail = "cell_even_ruled_sorted";
4052                 }
4053               else
4054                 {
4055                   if (parity)
4056                     detail = "cell_odd_ruled";
4057                   else
4058                     detail = "cell_even_ruled";
4059                 }
4060             }
4061           else
4062             {
4063               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4064                   n_visible_columns >= 3)
4065                 {
4066                   if (parity)
4067                     detail = "cell_odd_sorted";
4068                   else
4069                     detail = "cell_even_sorted";
4070                 }
4071               else
4072                 {
4073                   if (parity)
4074                     detail = "cell_odd";
4075                   else
4076                     detail = "cell_even";
4077                 }
4078             }
4079
4080           g_assert (detail);
4081
4082           if (widget->state == GTK_STATE_INSENSITIVE)
4083             state = GTK_STATE_INSENSITIVE;
4084           else if (flags & GTK_CELL_RENDERER_SELECTED)
4085             state = GTK_STATE_SELECTED;
4086           else
4087             state = GTK_STATE_NORMAL;
4088
4089           /* Draw background */
4090           if (row_ending_details)
4091             {
4092               char new_detail[128];
4093
4094               is_first = (rtl ? !list->next : !list->prev);
4095               is_last = (rtl ? !list->prev : !list->next);
4096
4097               /* (I don't like the snprintfs either, but couldn't find a
4098                * less messy way).
4099                */
4100               if (is_first && is_last)
4101                 g_snprintf (new_detail, 127, "%s", detail);
4102               else if (is_first)
4103                 g_snprintf (new_detail, 127, "%s_start", detail);
4104               else if (is_last)
4105                 g_snprintf (new_detail, 127, "%s_end", detail);
4106               else
4107                 g_snprintf (new_detail, 128, "%s_middle", detail);
4108
4109               gtk_paint_flat_box (widget->style,
4110                                   event->window,
4111                                   state,
4112                                   GTK_SHADOW_NONE,
4113                                   &event->area,
4114                                   widget,
4115                                   new_detail,
4116                                   background_area.x,
4117                                   background_area.y,
4118                                   background_area.width,
4119                                   background_area.height);
4120             }
4121           else
4122             {
4123               gtk_paint_flat_box (widget->style,
4124                                   event->window,
4125                                   state,
4126                                   GTK_SHADOW_NONE,
4127                                   &event->area,
4128                                   widget,
4129                                   detail,
4130                                   background_area.x,
4131                                   background_area.y,
4132                                   background_area.width,
4133                                   background_area.height);
4134             }
4135
4136           if (draw_hgrid_lines)
4137             {
4138               if (background_area.y > 0)
4139                 gdk_draw_line (event->window,
4140                                tree_view->priv->grid_line_gc[widget->state],
4141                                background_area.x, background_area.y,
4142                                background_area.x + background_area.width,
4143                                background_area.y);
4144
4145               if (y_offset + max_height >= event->area.height)
4146                 gdk_draw_line (event->window,
4147                                tree_view->priv->grid_line_gc[widget->state],
4148                                background_area.x, background_area.y + max_height,
4149                                background_area.x + background_area.width,
4150                                background_area.y + max_height);
4151             }
4152
4153           _pspp_sheet_view_column_cell_render (column,
4154                                                event->window,
4155                                                &background_area,
4156                                                &cell_area,
4157                                                &event->area,
4158                                                flags);
4159
4160           if (node == cursor && has_special_cell &&
4161               ((column == tree_view->priv->focus_column &&
4162                 PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS) &&
4163                 gtk_widget_has_focus (widget)) ||
4164                (column == tree_view->priv->edited_column)))
4165             {
4166               _pspp_sheet_view_column_cell_draw_focus (column,
4167                                                      event->window,
4168                                                      &background_area,
4169                                                      &cell_area,
4170                                                      &event->area,
4171                                                      flags);
4172             }
4173
4174           cell_offset += column->width;
4175         }
4176
4177       if (cell_offset < event->area.x)
4178         {
4179           gtk_paint_flat_box (widget->style,
4180                               event->window,
4181                               GTK_STATE_NORMAL,
4182                               GTK_SHADOW_NONE,
4183                               &event->area,
4184                               widget,
4185                               "base",
4186                               cell_offset,
4187                               background_area.y,
4188                               event->area.x - cell_offset,
4189                               background_area.height);
4190         }
4191
4192       if (node == drag_highlight)
4193         {
4194           /* Draw indicator for the drop
4195            */
4196           gint highlight_y = -1;
4197           int node = -1;
4198           gint width;
4199
4200           switch (tree_view->priv->drag_dest_pos)
4201             {
4202             case PSPP_SHEET_VIEW_DROP_BEFORE:
4203               highlight_y = background_area.y - 1;
4204               if (highlight_y < 0)
4205                       highlight_y = 0;
4206               break;
4207
4208             case PSPP_SHEET_VIEW_DROP_AFTER:
4209               highlight_y = background_area.y + background_area.height - 1;
4210               break;
4211
4212             case PSPP_SHEET_VIEW_DROP_INTO_OR_BEFORE:
4213             case PSPP_SHEET_VIEW_DROP_INTO_OR_AFTER:
4214               _pspp_sheet_view_find_node (tree_view, drag_dest_path, &node);
4215
4216               if (node < 0)
4217                 break;
4218               gdk_drawable_get_size (tree_view->priv->bin_window,
4219                                      &width, NULL);
4220
4221               if (row_ending_details)
4222                 gtk_paint_focus (widget->style,
4223                                  tree_view->priv->bin_window,
4224                                  gtk_widget_get_state (widget),
4225                                  &event->area,
4226                                  widget,
4227                                  (is_first
4228                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4229                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4230                                  0, BACKGROUND_FIRST_PIXEL (tree_view, node)
4231                                  - focus_line_width / 2,
4232                                  width, ROW_HEIGHT (tree_view)
4233                                - focus_line_width + 1);
4234               else
4235                 gtk_paint_focus (widget->style,
4236                                  tree_view->priv->bin_window,
4237                                  gtk_widget_get_state (widget),
4238                                  &event->area,
4239                                  widget,
4240                                  "treeview-drop-indicator",
4241                                  0, BACKGROUND_FIRST_PIXEL (tree_view, node)
4242                                  - focus_line_width / 2,
4243                                  width, ROW_HEIGHT (tree_view)
4244                                  - focus_line_width + 1);
4245               break;
4246             }
4247
4248           if (highlight_y >= 0)
4249             {
4250               gdk_draw_line (event->window,
4251                              widget->style->fg_gc[gtk_widget_get_state (widget)],
4252                              0,
4253                              highlight_y,
4254                              rtl ? 0 : bin_window_width,
4255                              highlight_y);
4256             }
4257         }
4258
4259       /* draw the big row-spanning focus rectangle, if needed */
4260       if (!has_special_cell && node == cursor &&
4261           PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS) &&
4262           gtk_widget_has_focus (widget))
4263         {
4264           gint tmp_y, tmp_height;
4265           gint width;
4266           GtkStateType focus_rect_state;
4267
4268           focus_rect_state =
4269             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4270             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4271              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4272               GTK_STATE_NORMAL));
4273
4274           gdk_drawable_get_size (tree_view->priv->bin_window,
4275                                  &width, NULL);
4276
4277           if (draw_hgrid_lines)
4278             {
4279               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, node) + grid_line_width / 2;
4280               tmp_height = ROW_HEIGHT (tree_view) - grid_line_width;
4281             }
4282           else
4283             {
4284               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, node);
4285               tmp_height = ROW_HEIGHT (tree_view);
4286             }
4287
4288           if (row_ending_details)
4289             gtk_paint_focus (widget->style,
4290                              tree_view->priv->bin_window,
4291                              focus_rect_state,
4292                              &event->area,
4293                              widget,
4294                              (is_first
4295                               ? (is_last ? "treeview" : "treeview-left" )
4296                               : (is_last ? "treeview-right" : "treeview-middle" )),
4297                              0, tmp_y,
4298                              width, tmp_height);
4299           else
4300             gtk_paint_focus (widget->style,
4301                              tree_view->priv->bin_window,
4302                              focus_rect_state,
4303                              &event->area,
4304                              widget,
4305                              "treeview",
4306                              0, tmp_y,
4307                              width, tmp_height);
4308         }
4309
4310       y_offset += max_height;
4311
4312       do
4313         {
4314           node = pspp_sheet_view_node_next (tree_view, node);
4315           if (node >= 0)
4316             {
4317               gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4318               done = TRUE;
4319
4320               /* Sanity Check! */
4321               TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4322             }
4323           else
4324             goto done;
4325         }
4326       while (!done);
4327     }
4328   while (y_offset < event->area.height);
4329
4330 done:
4331   pspp_sheet_view_draw_grid_lines (tree_view, event, n_visible_columns,
4332                                    min_y, max_y);
4333
4334  if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4335    {
4336      GdkRectangle *rectangles;
4337      gint n_rectangles;
4338
4339      gdk_region_get_rectangles (event->region,
4340                                 &rectangles,
4341                                 &n_rectangles);
4342
4343      while (n_rectangles--)
4344        pspp_sheet_view_paint_rubber_band (tree_view, &rectangles[n_rectangles]);
4345
4346      g_free (rectangles);
4347    }
4348
4349   if (cursor_path)
4350     gtk_tree_path_free (cursor_path);
4351
4352   if (drag_dest_path)
4353     gtk_tree_path_free (drag_dest_path);
4354
4355   return FALSE;
4356 }
4357
4358 static gboolean
4359 pspp_sheet_view_expose (GtkWidget      *widget,
4360                         GdkEventExpose *event)
4361 {
4362   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
4363
4364   if (event->window == tree_view->priv->bin_window)
4365     {
4366       gboolean retval;
4367       GList *tmp_list;
4368
4369       retval = pspp_sheet_view_bin_expose (widget, event);
4370
4371       /* We can't just chain up to Container::expose as it will try to send the
4372        * event to the headers, so we handle propagating it to our children
4373        * (eg. widgets being edited) ourselves.
4374        */
4375       tmp_list = tree_view->priv->children;
4376       while (tmp_list)
4377         {
4378           PsppSheetViewChild *child = tmp_list->data;
4379           tmp_list = tmp_list->next;
4380
4381           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
4382         }
4383
4384       return retval;
4385     }
4386
4387   else if (event->window == tree_view->priv->header_window)
4388     {
4389       gint n_visible_columns;
4390       GList *list;
4391
4392       gtk_paint_flat_box (widget->style,
4393                           event->window,
4394                           GTK_STATE_NORMAL,
4395                           GTK_SHADOW_NONE,
4396                           &event->area,
4397                           widget,
4398                           "cell_odd",
4399                           event->area.x,
4400                           event->area.y,
4401                           event->area.width,
4402                           event->area.height);
4403
4404       for (list = tree_view->priv->columns; list != NULL; list = list->next)
4405         {
4406           PsppSheetViewColumn *column = list->data;
4407
4408           if (column == tree_view->priv->drag_column || !column->visible)
4409             continue;
4410
4411           if (span_intersects (column->allocation.x, column->allocation.width,
4412                                event->area.x, event->area.width)
4413               && column->button != NULL)
4414             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
4415                                             column->button, event);
4416         }
4417
4418       n_visible_columns = 0;
4419       for (list = tree_view->priv->columns; list; list = list->next)
4420         {
4421           if (! PSPP_SHEET_VIEW_COLUMN (list->data)->visible)
4422             continue;
4423           n_visible_columns ++;
4424         }
4425       pspp_sheet_view_draw_grid_lines (tree_view,
4426                                        event,
4427                                        n_visible_columns,
4428                                        event->area.y,
4429                                        event->area.height);
4430     }
4431   else if (event->window == tree_view->priv->drag_window)
4432     {
4433       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
4434                                       tree_view->priv->drag_column->button,
4435                                       event);
4436     }
4437   return TRUE;
4438 }
4439
4440 enum
4441 {
4442   DROP_HOME,
4443   DROP_RIGHT,
4444   DROP_LEFT,
4445   DROP_END
4446 };
4447
4448 /* returns 0x1 when no column has been found -- yes it's hackish */
4449 static PsppSheetViewColumn *
4450 pspp_sheet_view_get_drop_column (PsppSheetView       *tree_view,
4451                                PsppSheetViewColumn *column,
4452                                gint               drop_position)
4453 {
4454   PsppSheetViewColumn *left_column = NULL;
4455   PsppSheetViewColumn *cur_column = NULL;
4456   GList *tmp_list;
4457
4458   if (!column->reorderable)
4459     return (PsppSheetViewColumn *)0x1;
4460
4461   switch (drop_position)
4462     {
4463       case DROP_HOME:
4464         /* find first column where we can drop */
4465         tmp_list = tree_view->priv->columns;
4466         if (column == PSPP_SHEET_VIEW_COLUMN (tmp_list->data))
4467           return (PsppSheetViewColumn *)0x1;
4468
4469         while (tmp_list)
4470           {
4471             g_assert (tmp_list);
4472
4473             cur_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
4474             tmp_list = tmp_list->next;
4475
4476             if (left_column && left_column->visible == FALSE)
4477               continue;
4478
4479             if (!tree_view->priv->column_drop_func)
4480               return left_column;
4481
4482             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
4483               {
4484                 left_column = cur_column;
4485                 continue;
4486               }
4487
4488             return left_column;
4489           }
4490
4491         if (!tree_view->priv->column_drop_func)
4492           return left_column;
4493
4494         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
4495           return left_column;
4496         else
4497           return (PsppSheetViewColumn *)0x1;
4498         break;
4499
4500       case DROP_RIGHT:
4501         /* find first column after column where we can drop */
4502         tmp_list = tree_view->priv->columns;
4503
4504         for (; tmp_list; tmp_list = tmp_list->next)
4505           if (PSPP_SHEET_VIEW_COLUMN (tmp_list->data) == column)
4506             break;
4507
4508         if (!tmp_list || !tmp_list->next)
4509           return (PsppSheetViewColumn *)0x1;
4510
4511         tmp_list = tmp_list->next;
4512         left_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
4513         tmp_list = tmp_list->next;
4514
4515         while (tmp_list)
4516           {
4517             g_assert (tmp_list);
4518
4519             cur_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
4520             tmp_list = tmp_list->next;
4521
4522             if (left_column && left_column->visible == FALSE)
4523               {
4524                 left_column = cur_column;
4525                 if (tmp_list)
4526                   tmp_list = tmp_list->next;
4527                 continue;
4528               }
4529
4530             if (!tree_view->priv->column_drop_func)
4531               return left_column;
4532
4533             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
4534               {
4535                 left_column = cur_column;
4536                 continue;
4537               }
4538
4539             return left_column;
4540           }
4541
4542         if (!tree_view->priv->column_drop_func)
4543           return left_column;
4544
4545         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
4546           return left_column;
4547         else
4548           return (PsppSheetViewColumn *)0x1;
4549         break;
4550
4551       case DROP_LEFT:
4552         /* find first column before column where we can drop */
4553         tmp_list = tree_view->priv->columns;
4554
4555         for (; tmp_list; tmp_list = tmp_list->next)
4556           if (PSPP_SHEET_VIEW_COLUMN (tmp_list->data) == column)
4557             break;
4558
4559         if (!tmp_list || !tmp_list->prev)
4560           return (PsppSheetViewColumn *)0x1;
4561
4562         tmp_list = tmp_list->prev;
4563         cur_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
4564         tmp_list = tmp_list->prev;
4565
4566         while (tmp_list)
4567           {
4568             g_assert (tmp_list);
4569
4570             left_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
4571
4572             if (left_column && !left_column->visible)
4573               {
4574                 /*if (!tmp_list->prev)
4575                   return (PsppSheetViewColumn *)0x1;
4576                   */
4577 /*
4578                 cur_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->prev->data);
4579                 tmp_list = tmp_list->prev->prev;
4580                 continue;*/
4581
4582                 cur_column = left_column;
4583                 if (tmp_list)
4584                   tmp_list = tmp_list->prev;
4585                 continue;
4586               }
4587
4588             if (!tree_view->priv->column_drop_func)
4589               return left_column;
4590
4591             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
4592               return left_column;
4593
4594             cur_column = left_column;
4595             tmp_list = tmp_list->prev;
4596           }
4597
4598         if (!tree_view->priv->column_drop_func)
4599           return NULL;
4600
4601         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
4602           return NULL;
4603         else
4604           return (PsppSheetViewColumn *)0x1;
4605         break;
4606
4607       case DROP_END:
4608         /* same as DROP_HOME case, but doing it backwards */
4609         tmp_list = g_list_last (tree_view->priv->columns);
4610         cur_column = NULL;
4611
4612         if (column == PSPP_SHEET_VIEW_COLUMN (tmp_list->data))
4613           return (PsppSheetViewColumn *)0x1;
4614
4615         while (tmp_list)
4616           {
4617             g_assert (tmp_list);
4618
4619             left_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
4620
4621             if (left_column && !left_column->visible)
4622               {
4623                 cur_column = left_column;
4624                 tmp_list = tmp_list->prev;
4625               }
4626
4627             if (!tree_view->priv->column_drop_func)
4628               return left_column;
4629
4630             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
4631               return left_column;
4632
4633             cur_column = left_column;
4634             tmp_list = tmp_list->prev;
4635           }
4636
4637         if (!tree_view->priv->column_drop_func)
4638           return NULL;
4639
4640         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
4641           return NULL;
4642         else
4643           return (PsppSheetViewColumn *)0x1;
4644         break;
4645     }
4646
4647   return (PsppSheetViewColumn *)0x1;
4648 }
4649
4650 static gboolean
4651 pspp_sheet_view_key_press (GtkWidget   *widget,
4652                          GdkEventKey *event)
4653 {
4654   PsppSheetView *tree_view = (PsppSheetView *) widget;
4655
4656   if (tree_view->priv->rubber_band_status)
4657     {
4658       if (event->keyval == GDK_Escape)
4659         pspp_sheet_view_stop_rubber_band (tree_view);
4660
4661       return TRUE;
4662     }
4663
4664   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_DRAG))
4665     {
4666       if (event->keyval == GDK_Escape)
4667         {
4668           tree_view->priv->cur_reorder = NULL;
4669           pspp_sheet_view_button_release_drag_column (widget, NULL);
4670         }
4671       return TRUE;
4672     }
4673
4674   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE))
4675     {
4676       GList *focus_column;
4677       gboolean rtl;
4678
4679       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
4680
4681       for (focus_column = tree_view->priv->columns;
4682            focus_column;
4683            focus_column = focus_column->next)
4684         {
4685           PsppSheetViewColumn *column = PSPP_SHEET_VIEW_COLUMN (focus_column->data);
4686
4687           if (column->button && gtk_widget_has_focus (column->button))
4688             break;
4689         }
4690
4691       if (focus_column &&
4692           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
4693           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
4694            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
4695         {
4696           PsppSheetViewColumn *column = PSPP_SHEET_VIEW_COLUMN (focus_column->data);
4697
4698           if (!column->resizable)
4699             {
4700               gtk_widget_error_bell (widget);
4701               return TRUE;
4702             }
4703
4704           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
4705               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
4706             {
4707               gint old_width = column->resized_width;
4708
4709               column->resized_width = MAX (column->resized_width,
4710                                            column->width);
4711               column->resized_width -= 2;
4712               if (column->resized_width < 0)
4713                 column->resized_width = 0;
4714
4715               if (column->min_width == -1)
4716                 column->resized_width = MAX (column->button_request,
4717                                              column->resized_width);
4718               else
4719                 column->resized_width = MAX (column->min_width,
4720                                              column->resized_width);
4721
4722               if (column->max_width != -1)
4723                 column->resized_width = MIN (column->resized_width,
4724                                              column->max_width);
4725
4726               column->use_resized_width = TRUE;
4727
4728               if (column->resized_width != old_width)
4729                 gtk_widget_queue_resize (widget);
4730               else
4731                 gtk_widget_error_bell (widget);
4732             }
4733           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
4734                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
4735             {
4736               gint old_width = column->resized_width;
4737
4738               column->resized_width = MAX (column->resized_width,
4739                                            column->width);
4740               column->resized_width += 2;
4741
4742               if (column->max_width != -1)
4743                 column->resized_width = MIN (column->resized_width,
4744                                              column->max_width);
4745
4746               column->use_resized_width = TRUE;
4747
4748               if (column->resized_width != old_width)
4749                 gtk_widget_queue_resize (widget);
4750               else
4751                 gtk_widget_error_bell (widget);
4752             }
4753
4754           return TRUE;
4755         }
4756
4757       if (focus_column &&
4758           (event->state & GDK_MOD1_MASK) &&
4759           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
4760            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
4761            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
4762            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
4763         {
4764           PsppSheetViewColumn *column = PSPP_SHEET_VIEW_COLUMN (focus_column->data);
4765
4766           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
4767               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
4768             {
4769               PsppSheetViewColumn *col;
4770               col = pspp_sheet_view_get_drop_column (tree_view, column, DROP_LEFT);
4771               if (col != (PsppSheetViewColumn *)0x1)
4772                 pspp_sheet_view_move_column_after (tree_view, column, col);
4773               else
4774                 gtk_widget_error_bell (widget);
4775             }
4776           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
4777                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
4778             {
4779               PsppSheetViewColumn *col;
4780               col = pspp_sheet_view_get_drop_column (tree_view, column, DROP_RIGHT);
4781               if (col != (PsppSheetViewColumn *)0x1)
4782                 pspp_sheet_view_move_column_after (tree_view, column, col);
4783               else
4784                 gtk_widget_error_bell (widget);
4785             }
4786           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
4787             {
4788               PsppSheetViewColumn *col;
4789               col = pspp_sheet_view_get_drop_column (tree_view, column, DROP_HOME);
4790               if (col != (PsppSheetViewColumn *)0x1)
4791                 pspp_sheet_view_move_column_after (tree_view, column, col);
4792               else
4793                 gtk_widget_error_bell (widget);
4794             }
4795           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
4796             {
4797               PsppSheetViewColumn *col;
4798               col = pspp_sheet_view_get_drop_column (tree_view, column, DROP_END);
4799               if (col != (PsppSheetViewColumn *)0x1)
4800                 pspp_sheet_view_move_column_after (tree_view, column, col);
4801               else
4802                 gtk_widget_error_bell (widget);
4803             }
4804
4805           return TRUE;
4806         }
4807     }
4808
4809   /* Chain up to the parent class.  It handles the keybindings. */
4810   if (GTK_WIDGET_CLASS (pspp_sheet_view_parent_class)->key_press_event (widget, event))
4811     return TRUE;
4812
4813   if (tree_view->priv->search_entry_avoid_unhandled_binding)
4814     {
4815       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
4816       return FALSE;
4817     }
4818
4819   /* We pass the event to the search_entry.  If its text changes, then we start
4820    * the typeahead find capabilities. */
4821   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
4822       && tree_view->priv->enable_search
4823       && !tree_view->priv->search_custom_entry_set)
4824     {
4825       GdkEvent *new_event;
4826       char *old_text;
4827       const char *new_text;
4828       gboolean retval;
4829       GdkScreen *screen;
4830       gboolean text_modified;
4831       gulong popup_menu_id;
4832
4833       pspp_sheet_view_ensure_interactive_directory (tree_view);
4834
4835       /* Make a copy of the current text */
4836       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
4837       new_event = gdk_event_copy ((GdkEvent *) event);
4838       g_object_unref (((GdkEventKey *) new_event)->window);
4839       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
4840       gtk_widget_realize (tree_view->priv->search_window);
4841
4842       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
4843                                         "popup-menu", G_CALLBACK (gtk_true),
4844                                         NULL);
4845
4846       /* Move the entry off screen */
4847       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
4848       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
4849                        gdk_screen_get_width (screen) + 1,
4850                        gdk_screen_get_height (screen) + 1);
4851       gtk_widget_show (tree_view->priv->search_window);
4852
4853       /* Send the event to the window.  If the preedit_changed signal is emitted
4854        * during this event, we will set priv->imcontext_changed  */
4855       tree_view->priv->imcontext_changed = FALSE;
4856       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
4857       gdk_event_free (new_event);
4858       gtk_widget_hide (tree_view->priv->search_window);
4859
4860       g_signal_handler_disconnect (tree_view->priv->search_entry,
4861                                    popup_menu_id);
4862
4863       /* We check to make sure that the entry tried to handle the text, and that
4864        * the text has changed.
4865        */
4866       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
4867       text_modified = strcmp (old_text, new_text) != 0;
4868       g_free (old_text);
4869       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
4870           (retval && text_modified))               /* ...or the text was modified */
4871         {
4872           if (pspp_sheet_view_real_start_interactive_search (tree_view, FALSE))
4873             {
4874               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
4875               return TRUE;
4876             }
4877           else
4878             {
4879               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
4880               return FALSE;
4881             }
4882         }
4883     }
4884
4885   return FALSE;
4886 }
4887
4888 static gboolean
4889 pspp_sheet_view_key_release (GtkWidget   *widget,
4890                            GdkEventKey *event)
4891 {
4892   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
4893
4894   if (tree_view->priv->rubber_band_status)
4895     return TRUE;
4896
4897   return GTK_WIDGET_CLASS (pspp_sheet_view_parent_class)->key_release_event (widget, event);
4898 }
4899
4900 /* FIXME Is this function necessary? Can I get an enter_notify event
4901  * w/o either an expose event or a mouse motion event?
4902  */
4903 static gboolean
4904 pspp_sheet_view_enter_notify (GtkWidget        *widget,
4905                             GdkEventCrossing *event)
4906 {
4907   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
4908   int node;
4909   gint new_y;
4910
4911   /* Sanity check it */
4912   if (event->window != tree_view->priv->bin_window)
4913     return FALSE;
4914
4915   if (tree_view->priv->row_count == 0)
4916     return FALSE;
4917
4918   if (event->mode == GDK_CROSSING_GRAB ||
4919       event->mode == GDK_CROSSING_GTK_GRAB ||
4920       event->mode == GDK_CROSSING_GTK_UNGRAB ||
4921       event->mode == GDK_CROSSING_STATE_CHANGED)
4922     return TRUE;
4923
4924   /* find the node internally */
4925   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4926   if (new_y < 0)
4927     new_y = 0;
4928   pspp_sheet_view_find_offset (tree_view, new_y, &node);
4929
4930   tree_view->priv->event_last_x = event->x;
4931   tree_view->priv->event_last_y = event->y;
4932
4933   prelight_or_select (tree_view, node, event->x, event->y);
4934
4935   return TRUE;
4936 }
4937
4938 static gboolean
4939 pspp_sheet_view_leave_notify (GtkWidget        *widget,
4940                             GdkEventCrossing *event)
4941 {
4942   PsppSheetView *tree_view;
4943
4944   if (event->mode == GDK_CROSSING_GRAB)
4945     return TRUE;
4946
4947   tree_view = PSPP_SHEET_VIEW (widget);
4948
4949   if (tree_view->priv->prelight_node >= 0)
4950     _pspp_sheet_view_queue_draw_node (tree_view,
4951                                    tree_view->priv->prelight_node,
4952                                    NULL);
4953
4954   tree_view->priv->event_last_x = -10000;
4955   tree_view->priv->event_last_y = -10000;
4956
4957   prelight_or_select (tree_view,
4958                       -1,
4959                       -1000, -1000); /* coords not possibly over an arrow */
4960
4961   return TRUE;
4962 }
4963
4964
4965 static gint
4966 pspp_sheet_view_focus_out (GtkWidget     *widget,
4967                          GdkEventFocus *event)
4968 {
4969   PsppSheetView *tree_view;
4970
4971   tree_view = PSPP_SHEET_VIEW (widget);
4972
4973   gtk_widget_queue_draw (widget);
4974
4975   /* destroy interactive search dialog */
4976   if (tree_view->priv->search_window)
4977     pspp_sheet_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
4978
4979   return FALSE;
4980 }
4981
4982
4983 /* Incremental Reflow
4984  */
4985
4986 static void
4987 pspp_sheet_view_node_queue_redraw (PsppSheetView *tree_view,
4988                                  int node)
4989 {
4990   gint y;
4991
4992   y = pspp_sheet_view_node_find_offset (tree_view, node)
4993     - tree_view->priv->vadjustment->value
4994     + TREE_VIEW_HEADER_HEIGHT (tree_view);
4995
4996   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
4997                               0, y,
4998                               GTK_WIDGET (tree_view)->allocation.width,
4999                               tree_view->priv->fixed_height);
5000 }
5001
5002 static gboolean
5003 node_is_visible (PsppSheetView *tree_view,
5004                  int node)
5005 {
5006   int y;
5007   int height;
5008
5009   y = pspp_sheet_view_node_find_offset (tree_view, node);
5010   height = ROW_HEIGHT (tree_view);
5011
5012   if (y >= tree_view->priv->vadjustment->value &&
5013       y + height <= (tree_view->priv->vadjustment->value
5014                      + tree_view->priv->vadjustment->page_size))
5015     return TRUE;
5016
5017   return FALSE;
5018 }
5019
5020 /* Returns the row height. */
5021 static gint
5022 validate_row (PsppSheetView *tree_view,
5023               int node,
5024               GtkTreeIter *iter,
5025               GtkTreePath *path)
5026 {
5027   PsppSheetViewColumn *column;
5028   GList *list, *first_column, *last_column;
5029   gint height = 0;
5030   gint horizontal_separator;
5031   gint vertical_separator;
5032   gint focus_line_width;
5033   gboolean draw_vgrid_lines, draw_hgrid_lines;
5034   gint focus_pad;
5035   gint grid_line_width;
5036   gboolean wide_separators;
5037   gint separator_height;
5038
5039   gtk_widget_style_get (GTK_WIDGET (tree_view),
5040                         "focus-padding", &focus_pad,
5041                         "focus-line-width", &focus_line_width,
5042                         "horizontal-separator", &horizontal_separator,
5043                         "vertical-separator", &vertical_separator,
5044                         "grid-line-width", &grid_line_width,
5045                         "wide-separators",  &wide_separators,
5046                         "separator-height", &separator_height,
5047                         NULL);
5048
5049   draw_vgrid_lines =
5050     tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_VERTICAL
5051     || tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_BOTH;
5052   draw_hgrid_lines =
5053     tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_HORIZONTAL
5054     || tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_BOTH;
5055
5056   for (last_column = g_list_last (tree_view->priv->columns);
5057        last_column && !(PSPP_SHEET_VIEW_COLUMN (last_column->data)->visible);
5058        last_column = last_column->prev)
5059     ;
5060
5061   for (first_column = g_list_first (tree_view->priv->columns);
5062        first_column && !(PSPP_SHEET_VIEW_COLUMN (first_column->data)->visible);
5063        first_column = first_column->next)
5064     ;
5065
5066   for (list = tree_view->priv->columns; list; list = list->next)
5067     {
5068       gint tmp_width;
5069       gint tmp_height;
5070
5071       column = list->data;
5072
5073       if (! column->visible)
5074         continue;
5075
5076       pspp_sheet_view_column_cell_set_cell_data (column, tree_view->priv->model, iter);
5077       pspp_sheet_view_column_cell_get_size (column,
5078                                           NULL, NULL, NULL,
5079                                           &tmp_width, &tmp_height);
5080
5081       tmp_height += vertical_separator;
5082       height = MAX (height, tmp_height);
5083
5084       tmp_width = tmp_width + horizontal_separator;
5085
5086       if (draw_vgrid_lines)
5087         {
5088           if (list->data == first_column || list->data == last_column)
5089             tmp_width += grid_line_width / 2.0;
5090           else
5091             tmp_width += grid_line_width;
5092         }
5093
5094       if (tmp_width > column->requested_width)
5095         column->requested_width = tmp_width;
5096     }
5097
5098   if (draw_hgrid_lines)
5099     height += grid_line_width;
5100
5101   tree_view->priv->post_validation_flag = TRUE;
5102   return height;
5103 }
5104
5105
5106 static void
5107 validate_visible_area (PsppSheetView *tree_view)
5108 {
5109   GtkTreePath *path = NULL;
5110   GtkTreePath *above_path = NULL;
5111   GtkTreeIter iter;
5112   int node = -1;
5113   gboolean size_changed = FALSE;
5114   gint total_height;
5115   gint area_above = 0;
5116   gint area_below = 0;
5117
5118   if (tree_view->priv->row_count == 0)
5119     return;
5120
5121   if (tree_view->priv->scroll_to_path == NULL)
5122     return;
5123
5124   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5125
5126   if (total_height == 0)
5127     return;
5128
5129   path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5130   if (path)
5131     {
5132       /* we are going to scroll, and will update dy */
5133       _pspp_sheet_view_find_node (tree_view, path, &node);
5134       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5135
5136       if (tree_view->priv->scroll_to_use_align)
5137         {
5138           gint height = ROW_HEIGHT (tree_view);
5139           area_above = (total_height - height) *
5140             tree_view->priv->scroll_to_row_align;
5141           area_below = total_height - area_above - height;
5142           area_above = MAX (area_above, 0);
5143           area_below = MAX (area_below, 0);
5144         }
5145       else
5146         {
5147           /* two cases:
5148            * 1) row not visible
5149            * 2) row visible
5150            */
5151           gint dy;
5152           gint height = ROW_HEIGHT (tree_view);
5153
5154           dy = pspp_sheet_view_node_find_offset (tree_view, node);
5155
5156           if (dy >= tree_view->priv->vadjustment->value &&
5157               dy + height <= (tree_view->priv->vadjustment->value
5158                               + tree_view->priv->vadjustment->page_size))
5159             {
5160               /* row visible: keep the row at the same position */
5161               area_above = dy - tree_view->priv->vadjustment->value;
5162               area_below = (tree_view->priv->vadjustment->value +
5163                             tree_view->priv->vadjustment->page_size)
5164                 - dy - height;
5165             }
5166           else
5167             {
5168               /* row not visible */
5169               if (dy >= 0
5170                   && dy + height <= tree_view->priv->vadjustment->page_size)
5171                 {
5172                   /* row at the beginning -- fixed */
5173                   area_above = dy;
5174                   area_below = tree_view->priv->vadjustment->page_size
5175                     - area_above - height;
5176                 }
5177               else if (dy >= (tree_view->priv->vadjustment->upper -
5178                               tree_view->priv->vadjustment->page_size))
5179                 {
5180                   /* row at the end -- fixed */
5181                   area_above = dy - (tree_view->priv->vadjustment->upper -
5182                                      tree_view->priv->vadjustment->page_size);
5183                   area_below = tree_view->priv->vadjustment->page_size -
5184                     area_above - height;
5185
5186                   if (area_below < 0)
5187                     {
5188                       area_above = tree_view->priv->vadjustment->page_size - height;
5189                       area_below = 0;
5190                     }
5191                 }
5192               else
5193                 {
5194                   /* row somewhere in the middle, bring it to the top
5195                    * of the view
5196                    */
5197                   area_above = 0;
5198                   area_below = total_height - height;
5199                 }
5200             }
5201         }
5202     }
5203   else
5204     /* the scroll to isn't valid; ignore it.
5205      */
5206     {
5207       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5208       tree_view->priv->scroll_to_path = NULL;
5209       return;
5210     }
5211
5212   above_path = gtk_tree_path_copy (path);
5213
5214   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
5215    * backwards is much slower then forward, as there is no iter_prev function.
5216    * We go forwards first in case we run out of tree.  Then we go backwards to
5217    * fill out the top.
5218    */
5219   while (node >= 0 && area_below > 0)
5220     {
5221       gboolean done = FALSE;
5222       do
5223         {
5224           node = pspp_sheet_view_node_next (tree_view, node);
5225           if (node >= 0)
5226             {
5227               gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5228               done = TRUE;
5229               gtk_tree_path_next (path);
5230
5231               /* Sanity Check! */
5232               TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
5233             }
5234           else
5235             break;
5236         }
5237       while (!done);
5238
5239       if (node < 0)
5240         break;
5241
5242       area_below -= ROW_HEIGHT (tree_view);
5243     }
5244   gtk_tree_path_free (path);
5245
5246   /* If we ran out of tree, and have extra area_below left, we need to add it
5247    * to area_above */
5248   if (area_below > 0)
5249     area_above += area_below;
5250
5251   _pspp_sheet_view_find_node (tree_view, above_path, &node);
5252
5253   /* We walk backwards */
5254   while (area_above > 0)
5255     {
5256       node = pspp_sheet_view_node_prev (tree_view, node);
5257
5258       /* Always find the new path in the tree.  We cannot just assume
5259        * a gtk_tree_path_prev() is enough here, as there might be children
5260        * in between this node and the previous sibling node.  If this
5261        * appears to be a performance hotspot in profiles, we can look into
5262        * intrigate logic for keeping path, node and iter in sync like
5263        * we do for forward walks.  (Which will be hard because of the lacking
5264        * iter_prev).
5265        */
5266
5267       if (node < 0)
5268         break;
5269
5270       gtk_tree_path_free (above_path);
5271       above_path = _pspp_sheet_view_find_path (tree_view, node);
5272
5273       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
5274
5275       area_above -= ROW_HEIGHT (tree_view);
5276     }
5277
5278   /* set the dy here to scroll to the path,
5279    * and sync the top row accordingly
5280    */
5281   pspp_sheet_view_set_top_row (tree_view, above_path, -area_above);
5282   pspp_sheet_view_top_row_to_dy (tree_view);
5283
5284   /* update width/height and queue a resize */
5285   if (size_changed)
5286     {
5287       GtkRequisition requisition;
5288
5289       /* We temporarily guess a size, under the assumption that it will be the
5290        * same when we get our next size_allocate.  If we don't do this, we'll be
5291        * in an inconsistent state if we call top_row_to_dy. */
5292
5293       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
5294       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
5295       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
5296       gtk_adjustment_changed (tree_view->priv->hadjustment);
5297       gtk_adjustment_changed (tree_view->priv->vadjustment);
5298       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
5299     }
5300
5301   gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5302   tree_view->priv->scroll_to_path = NULL;
5303
5304   if (above_path)
5305     gtk_tree_path_free (above_path);
5306
5307   if (tree_view->priv->scroll_to_column)
5308     {
5309       tree_view->priv->scroll_to_column = NULL;
5310     }
5311   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
5312 }
5313
5314 static void
5315 initialize_fixed_height_mode (PsppSheetView *tree_view)
5316 {
5317   if (!tree_view->priv->row_count)
5318     return;
5319
5320   if (tree_view->priv->fixed_height_set)
5321     return;
5322
5323   if (tree_view->priv->fixed_height < 0)
5324     {
5325       GtkTreeIter iter;
5326       GtkTreePath *path;
5327
5328       int node = 0;
5329
5330       path = _pspp_sheet_view_find_path (tree_view, node);
5331       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5332
5333       tree_view->priv->fixed_height = validate_row (tree_view, node, &iter, path);
5334
5335       gtk_tree_path_free (path);
5336
5337       g_object_notify (G_OBJECT (tree_view), "fixed-height");
5338     }
5339 }
5340
5341 /* Our strategy for finding nodes to validate is a little convoluted.  We find
5342  * the left-most uninvalidated node.  We then try walking right, validating
5343  * nodes.  Once we find a valid node, we repeat the previous process of finding
5344  * the first invalid node.
5345  */
5346
5347 static gboolean
5348 validate_rows_handler (PsppSheetView *tree_view)
5349 {
5350   initialize_fixed_height_mode (tree_view);
5351   if (tree_view->priv->validate_rows_timer)
5352     {
5353       g_source_remove (tree_view->priv->validate_rows_timer);
5354       tree_view->priv->validate_rows_timer = 0;
5355     }
5356
5357   return FALSE;
5358 }
5359
5360 static gboolean
5361 do_presize_handler (PsppSheetView *tree_view)
5362 {
5363   GtkRequisition requisition;
5364
5365   validate_visible_area (tree_view);
5366   tree_view->priv->presize_handler_timer = 0;
5367
5368   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
5369     return FALSE;
5370
5371   gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
5372
5373   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
5374   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
5375   gtk_adjustment_changed (tree_view->priv->hadjustment);
5376   gtk_adjustment_changed (tree_view->priv->vadjustment);
5377   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
5378
5379   return FALSE;
5380 }
5381
5382 static gboolean
5383 presize_handler_callback (gpointer data)
5384 {
5385   do_presize_handler (PSPP_SHEET_VIEW (data));
5386
5387   return FALSE;
5388 }
5389
5390 static void
5391 install_presize_handler (PsppSheetView *tree_view)
5392 {
5393   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
5394     return;
5395
5396   if (! tree_view->priv->presize_handler_timer)
5397     {
5398       tree_view->priv->presize_handler_timer =
5399         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
5400     }
5401   if (! tree_view->priv->validate_rows_timer)
5402     {
5403       tree_view->priv->validate_rows_timer =
5404         gdk_threads_add_idle_full (PSPP_SHEET_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
5405     }
5406 }
5407
5408 static gboolean
5409 scroll_sync_handler (PsppSheetView *tree_view)
5410 {
5411   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
5412     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
5413   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
5414     pspp_sheet_view_top_row_to_dy (tree_view);
5415   else
5416     pspp_sheet_view_dy_to_top_row (tree_view);
5417
5418   tree_view->priv->scroll_sync_timer = 0;
5419
5420   return FALSE;
5421 }
5422
5423 static void
5424 install_scroll_sync_handler (PsppSheetView *tree_view)
5425 {
5426   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
5427     return;
5428
5429   if (!tree_view->priv->scroll_sync_timer)
5430     {
5431       tree_view->priv->scroll_sync_timer =
5432         gdk_threads_add_idle_full (PSPP_SHEET_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
5433     }
5434 }
5435
5436 static void
5437 pspp_sheet_view_set_top_row (PsppSheetView *tree_view,
5438                            GtkTreePath *path,
5439                            gint         offset)
5440 {
5441   gtk_tree_row_reference_free (tree_view->priv->top_row);
5442
5443   if (!path)
5444     {
5445       tree_view->priv->top_row = NULL;
5446       tree_view->priv->top_row_dy = 0;
5447     }
5448   else
5449     {
5450       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
5451       tree_view->priv->top_row_dy = offset;
5452     }
5453 }
5454
5455 /* Always call this iff dy is in the visible range.  If the tree is empty, then
5456  * it's set to be NULL, and top_row_dy is 0;
5457  */
5458 static void
5459 pspp_sheet_view_dy_to_top_row (PsppSheetView *tree_view)
5460 {
5461   gint offset;
5462   GtkTreePath *path;
5463   int node;
5464
5465   if (tree_view->priv->row_count == 0)
5466     {
5467       pspp_sheet_view_set_top_row (tree_view, NULL, 0);
5468     }
5469   else
5470     {
5471       offset = pspp_sheet_view_find_offset (tree_view,
5472                                             tree_view->priv->dy,
5473                                             &node);
5474
5475       if (node < 0)
5476         {
5477           pspp_sheet_view_set_top_row (tree_view, NULL, 0);
5478         }
5479       else
5480         {
5481           path = _pspp_sheet_view_find_path (tree_view, node);
5482           pspp_sheet_view_set_top_row (tree_view, path, offset);
5483           gtk_tree_path_free (path);
5484         }
5485     }
5486 }
5487
5488 static void
5489 pspp_sheet_view_top_row_to_dy (PsppSheetView *tree_view)
5490 {
5491   GtkTreePath *path;
5492   int node;
5493   int new_dy;
5494
5495   /* Avoid recursive calls */
5496   if (tree_view->priv->in_top_row_to_dy)
5497     return;
5498
5499   if (tree_view->priv->top_row)
5500     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
5501   else
5502     path = NULL;
5503
5504   if (!path)
5505     node = -1;
5506   else
5507     _pspp_sheet_view_find_node (tree_view, path, &node);
5508
5509   if (path)
5510     gtk_tree_path_free (path);
5511
5512   if (node < 0)
5513     {
5514       /* keep dy and set new toprow */
5515       gtk_tree_row_reference_free (tree_view->priv->top_row);
5516       tree_view->priv->top_row = NULL;
5517       tree_view->priv->top_row_dy = 0;
5518       /* DO NOT install the idle handler */
5519       pspp_sheet_view_dy_to_top_row (tree_view);
5520       return;
5521     }
5522
5523   if (ROW_HEIGHT (tree_view) < tree_view->priv->top_row_dy)
5524     {
5525       /* new top row -- do NOT install the idle handler */
5526       pspp_sheet_view_dy_to_top_row (tree_view);
5527       return;
5528     }
5529
5530   new_dy = pspp_sheet_view_node_find_offset (tree_view, node);
5531   new_dy += tree_view->priv->top_row_dy;
5532
5533   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
5534     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
5535
5536   new_dy = MAX (0, new_dy);
5537
5538   tree_view->priv->in_top_row_to_dy = TRUE;
5539   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
5540   tree_view->priv->in_top_row_to_dy = FALSE;
5541 }
5542
5543
5544 void
5545 _pspp_sheet_view_install_mark_rows_col_dirty (PsppSheetView *tree_view)
5546 {
5547   install_presize_handler (tree_view);
5548 }
5549
5550 /* Drag-and-drop */
5551
5552 static void
5553 set_source_row (GdkDragContext *context,
5554                 GtkTreeModel   *model,
5555                 GtkTreePath    *source_row)
5556 {
5557   g_object_set_data_full (G_OBJECT (context),
5558                           "gtk-tree-view-source-row",
5559                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
5560                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
5561 }
5562
5563 static GtkTreePath*
5564 get_source_row (GdkDragContext *context)
5565 {
5566   GtkTreeRowReference *ref =
5567     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
5568
5569   if (ref)
5570     return gtk_tree_row_reference_get_path (ref);
5571   else
5572     return NULL;
5573 }
5574
5575 typedef struct
5576 {
5577   GtkTreeRowReference *dest_row;
5578   guint                path_down_mode   : 1;
5579   guint                empty_view_drop  : 1;
5580   guint                drop_append_mode : 1;
5581 }
5582 DestRow;
5583
5584 static void
5585 dest_row_free (gpointer data)
5586 {
5587   DestRow *dr = (DestRow *)data;
5588
5589   gtk_tree_row_reference_free (dr->dest_row);
5590   g_slice_free (DestRow, dr);
5591 }
5592
5593 static void
5594 set_dest_row (GdkDragContext *context,
5595               GtkTreeModel   *model,
5596               GtkTreePath    *dest_row,
5597               gboolean        path_down_mode,
5598               gboolean        empty_view_drop,
5599               gboolean        drop_append_mode)
5600 {
5601   DestRow *dr;
5602
5603   if (!dest_row)
5604     {
5605       g_object_set_data_full (G_OBJECT (context), "gtk-tree-view-dest-row",
5606                               NULL, NULL);
5607       return;
5608     }
5609
5610   dr = g_slice_new (DestRow);
5611
5612   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
5613   dr->path_down_mode = path_down_mode != FALSE;
5614   dr->empty_view_drop = empty_view_drop != FALSE;
5615   dr->drop_append_mode = drop_append_mode != FALSE;
5616
5617   g_object_set_data_full (G_OBJECT (context), "gtk-tree-view-dest-row",
5618                           dr, (GDestroyNotify) dest_row_free);
5619 }
5620
5621 static GtkTreePath*
5622 get_dest_row (GdkDragContext *context,
5623               gboolean       *path_down_mode)
5624 {
5625   DestRow *dr =
5626     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
5627
5628   if (dr)
5629     {
5630       GtkTreePath *path = NULL;
5631
5632       if (path_down_mode)
5633         *path_down_mode = dr->path_down_mode;
5634
5635       if (dr->dest_row)
5636         path = gtk_tree_row_reference_get_path (dr->dest_row);
5637       else if (dr->empty_view_drop)
5638         path = gtk_tree_path_new_from_indices (0, -1);
5639       else
5640         path = NULL;
5641
5642       if (path && dr->drop_append_mode)
5643         gtk_tree_path_next (path);
5644
5645       return path;
5646     }
5647   else
5648     return NULL;
5649 }
5650
5651 /* Get/set whether drag_motion requested the drag data and
5652  * drag_data_received should thus not actually insert the data,
5653  * since the data doesn't result from a drop.
5654  */
5655 static void
5656 set_status_pending (GdkDragContext *context,
5657                     GdkDragAction   suggested_action)
5658 {
5659   g_object_set_data (G_OBJECT (context),
5660                      "gtk-tree-view-status-pending",
5661                      GINT_TO_POINTER (suggested_action));
5662 }
5663
5664 static GdkDragAction
5665 get_status_pending (GdkDragContext *context)
5666 {
5667   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
5668                                              "gtk-tree-view-status-pending"));
5669 }
5670
5671 static TreeViewDragInfo*
5672 get_info (PsppSheetView *tree_view)
5673 {
5674   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
5675 }
5676
5677 static void
5678 destroy_info (TreeViewDragInfo *di)
5679 {
5680   g_slice_free (TreeViewDragInfo, di);
5681 }
5682
5683 static TreeViewDragInfo*
5684 ensure_info (PsppSheetView *tree_view)
5685 {
5686   TreeViewDragInfo *di;
5687
5688   di = get_info (tree_view);
5689
5690   if (di == NULL)
5691     {
5692       di = g_slice_new0 (TreeViewDragInfo);
5693
5694       g_object_set_data_full (G_OBJECT (tree_view),
5695                               "gtk-tree-view-drag-info",
5696                               di,
5697                               (GDestroyNotify) destroy_info);
5698     }
5699
5700   return di;
5701 }
5702
5703 static void
5704 remove_info (PsppSheetView *tree_view)
5705 {
5706   g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
5707 }
5708
5709 #if 0
5710 static gint
5711 drag_scan_timeout (gpointer data)
5712 {
5713   PsppSheetView *tree_view;
5714   gint x, y;
5715   GdkModifierType state;
5716   GtkTreePath *path = NULL;
5717   PsppSheetViewColumn *column = NULL;
5718   GdkRectangle visible_rect;
5719
5720   GDK_THREADS_ENTER ();
5721
5722   tree_view = PSPP_SHEET_VIEW (data);
5723
5724   gdk_window_get_pointer (tree_view->priv->bin_window,
5725                           &x, &y, &state);
5726
5727   pspp_sheet_view_get_visible_rect (tree_view, &visible_rect);
5728
5729   /* See if we are near the edge. */
5730   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
5731       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
5732       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
5733       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
5734     {
5735       pspp_sheet_view_get_path_at_pos (tree_view,
5736                                      tree_view->priv->bin_window,
5737                                      x, y,
5738                                      &path,
5739                                      &column,
5740                                      NULL,
5741                                      NULL);
5742
5743       if (path != NULL)
5744         {
5745           pspp_sheet_view_scroll_to_cell (tree_view,
5746                                         path,
5747                                         column,
5748                                         TRUE,
5749                                         0.5, 0.5);
5750
5751           gtk_tree_path_free (path);
5752         }
5753     }
5754
5755   GDK_THREADS_LEAVE ();
5756
5757   return TRUE;
5758 }
5759 #endif /* 0 */
5760
5761 static void
5762 add_scroll_timeout (PsppSheetView *tree_view)
5763 {
5764   if (tree_view->priv->scroll_timeout == 0)
5765     {
5766       tree_view->priv->scroll_timeout =
5767         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
5768     }
5769 }
5770
5771 static void
5772 remove_scroll_timeout (PsppSheetView *tree_view)
5773 {
5774   if (tree_view->priv->scroll_timeout != 0)
5775     {
5776       g_source_remove (tree_view->priv->scroll_timeout);
5777       tree_view->priv->scroll_timeout = 0;
5778     }
5779 }
5780
5781 static gboolean
5782 check_model_dnd (GtkTreeModel *model,
5783                  GType         required_iface,
5784                  const gchar  *signal)
5785 {
5786   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
5787     {
5788       g_warning ("You must override the default '%s' handler "
5789                  "on PsppSheetView when using models that don't support "
5790                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
5791                  "is to connect to '%s' and call "
5792                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
5793                  "the default handler from running. Look at the source code "
5794                  "for the default handler in gtktreeview.c to get an idea what "
5795                  "your handler should do. (gtktreeview.c is in the GTK source "
5796                  "code.) If you're using GTK from a language other than C, "
5797                  "there may be a more natural way to override default handlers, e.g. via derivation.",
5798                  signal, g_type_name (required_iface), signal);
5799       return FALSE;
5800     }
5801   else
5802     return TRUE;
5803 }
5804
5805 static gboolean
5806 scroll_row_timeout (gpointer data)
5807 {
5808   PsppSheetView *tree_view = data;
5809
5810   pspp_sheet_view_horizontal_autoscroll (tree_view);
5811   pspp_sheet_view_vertical_autoscroll (tree_view);
5812
5813   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5814     pspp_sheet_view_update_rubber_band (tree_view);
5815
5816   return TRUE;
5817 }
5818
5819 /* Returns TRUE if event should not be propagated to parent widgets */
5820 static gboolean
5821 set_destination_row (PsppSheetView    *tree_view,
5822                      GdkDragContext *context,
5823                      /* coordinates relative to the widget */
5824                      gint            x,
5825                      gint            y,
5826                      GdkDragAction  *suggested_action,
5827                      GdkAtom        *target)
5828 {
5829   GtkTreePath *path = NULL;
5830   PsppSheetViewDropPosition pos;
5831   PsppSheetViewDropPosition old_pos;
5832   TreeViewDragInfo *di;
5833   GtkWidget *widget;
5834   GtkTreePath *old_dest_path = NULL;
5835   gboolean can_drop = FALSE;
5836
5837   *suggested_action = 0;
5838   *target = GDK_NONE;
5839
5840   widget = GTK_WIDGET (tree_view);
5841
5842   di = get_info (tree_view);
5843
5844   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
5845     {
5846       /* someone unset us as a drag dest, note that if
5847        * we return FALSE drag_leave isn't called
5848        */
5849
5850       pspp_sheet_view_set_drag_dest_row (tree_view,
5851                                        NULL,
5852                                        PSPP_SHEET_VIEW_DROP_BEFORE);
5853
5854       remove_scroll_timeout (PSPP_SHEET_VIEW (widget));
5855
5856       return FALSE; /* no longer a drop site */
5857     }
5858
5859   *target = gtk_drag_dest_find_target (widget, context,
5860                                        gtk_drag_dest_get_target_list (widget));
5861   if (*target == GDK_NONE)
5862     {
5863       return FALSE;
5864     }
5865
5866   if (!pspp_sheet_view_get_dest_row_at_pos (tree_view,
5867                                           x, y,
5868                                           &path,
5869                                           &pos))
5870     {
5871       gint n_children;
5872       GtkTreeModel *model;
5873
5874       /* the row got dropped on empty space, let's setup a special case
5875        */
5876
5877       if (path)
5878         gtk_tree_path_free (path);
5879
5880       model = pspp_sheet_view_get_model (tree_view);
5881
5882       n_children = gtk_tree_model_iter_n_children (model, NULL);
5883       if (n_children)
5884         {
5885           pos = PSPP_SHEET_VIEW_DROP_AFTER;
5886           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
5887         }
5888       else
5889         {
5890           pos = PSPP_SHEET_VIEW_DROP_BEFORE;
5891           path = gtk_tree_path_new_from_indices (0, -1);
5892         }
5893
5894       can_drop = TRUE;
5895
5896       goto out;
5897     }
5898
5899   g_assert (path);
5900
5901   /* If we left the current row's "open" zone, unset the timeout for
5902    * opening the row
5903    */
5904   pspp_sheet_view_get_drag_dest_row (tree_view,
5905                                    &old_dest_path,
5906                                    &old_pos);
5907
5908   if (old_dest_path)
5909     gtk_tree_path_free (old_dest_path);
5910
5911   if (TRUE /* FIXME if the location droppable predicate */)
5912     {
5913       can_drop = TRUE;
5914     }
5915
5916 out:
5917   if (can_drop)
5918     {
5919       GtkWidget *source_widget;
5920
5921       *suggested_action = context->suggested_action;
5922       source_widget = gtk_drag_get_source_widget (context);
5923
5924       if (source_widget == widget)
5925         {
5926           /* Default to MOVE, unless the user has
5927            * pressed ctrl or shift to affect available actions
5928            */
5929           if ((context->actions & GDK_ACTION_MOVE) != 0)
5930             *suggested_action = GDK_ACTION_MOVE;
5931         }
5932
5933       pspp_sheet_view_set_drag_dest_row (PSPP_SHEET_VIEW (widget),
5934                                        path, pos);
5935     }
5936   else
5937     {
5938       /* can't drop here */
5939       pspp_sheet_view_set_drag_dest_row (PSPP_SHEET_VIEW (widget),
5940                                        NULL,
5941                                        PSPP_SHEET_VIEW_DROP_BEFORE);
5942     }
5943
5944   if (path)
5945     gtk_tree_path_free (path);
5946
5947   return TRUE;
5948 }
5949
5950 static GtkTreePath*
5951 get_logical_dest_row (PsppSheetView *tree_view,
5952                       gboolean    *path_down_mode,
5953                       gboolean    *drop_append_mode)
5954 {
5955   /* adjust path to point to the row the drop goes in front of */
5956   GtkTreePath *path = NULL;
5957   PsppSheetViewDropPosition pos;
5958
5959   g_return_val_if_fail (path_down_mode != NULL, NULL);
5960   g_return_val_if_fail (drop_append_mode != NULL, NULL);
5961
5962   *path_down_mode = FALSE;
5963   *drop_append_mode = 0;
5964
5965   pspp_sheet_view_get_drag_dest_row (tree_view, &path, &pos);
5966
5967   if (path == NULL)
5968     return NULL;
5969
5970   if (pos == PSPP_SHEET_VIEW_DROP_BEFORE)
5971     ; /* do nothing */
5972   else if (pos == PSPP_SHEET_VIEW_DROP_INTO_OR_BEFORE ||
5973            pos == PSPP_SHEET_VIEW_DROP_INTO_OR_AFTER)
5974     *path_down_mode = TRUE;
5975   else
5976     {
5977       GtkTreeIter iter;
5978       GtkTreeModel *model = pspp_sheet_view_get_model (tree_view);
5979
5980       g_assert (pos == PSPP_SHEET_VIEW_DROP_AFTER);
5981
5982       if (!gtk_tree_model_get_iter (model, &iter, path) ||
5983           !gtk_tree_model_iter_next (model, &iter))
5984         *drop_append_mode = 1;
5985       else
5986         {
5987           *drop_append_mode = 0;
5988           gtk_tree_path_next (path);
5989         }
5990     }
5991
5992   return path;
5993 }
5994
5995 static gboolean
5996 pspp_sheet_view_maybe_begin_dragging_row (PsppSheetView      *tree_view,
5997                                         GdkEventMotion   *event)
5998 {
5999   GtkWidget *widget = GTK_WIDGET (tree_view);
6000   GdkDragContext *context;
6001   TreeViewDragInfo *di;
6002   GtkTreePath *path = NULL;
6003   gint button;
6004   gint cell_x, cell_y;
6005   GtkTreeModel *model;
6006   gboolean retval = FALSE;
6007
6008   di = get_info (tree_view);
6009
6010   if (di == NULL || !di->source_set)
6011     goto out;
6012
6013   if (tree_view->priv->pressed_button < 0)
6014     goto out;
6015
6016   if (!gtk_drag_check_threshold (widget,
6017                                  tree_view->priv->press_start_x,
6018                                  tree_view->priv->press_start_y,
6019                                  event->x, event->y))
6020     goto out;
6021
6022   model = pspp_sheet_view_get_model (tree_view);
6023
6024   if (model == NULL)
6025     goto out;
6026
6027   button = tree_view->priv->pressed_button;
6028   tree_view->priv->pressed_button = -1;
6029
6030   pspp_sheet_view_get_path_at_pos (tree_view,
6031                                  tree_view->priv->press_start_x,
6032                                  tree_view->priv->press_start_y,
6033                                  &path,
6034                                  NULL,
6035                                  &cell_x,
6036                                  &cell_y);
6037
6038   if (path == NULL)
6039     goto out;
6040
6041   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
6042       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
6043                                            path))
6044     goto out;
6045
6046   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
6047     goto out;
6048
6049   /* Now we can begin the drag */
6050
6051   retval = TRUE;
6052
6053   context = gtk_drag_begin (widget,
6054                             gtk_drag_source_get_target_list (widget),
6055                             di->source_actions,
6056                             button,
6057                             (GdkEvent*)event);
6058
6059   set_source_row (context, model, path);
6060
6061  out:
6062   if (path)
6063     gtk_tree_path_free (path);
6064
6065   return retval;
6066 }
6067
6068
6069 static void
6070 pspp_sheet_view_drag_begin (GtkWidget      *widget,
6071                           GdkDragContext *context)
6072 {
6073   PsppSheetView *tree_view;
6074   GtkTreePath *path = NULL;
6075   gint cell_x, cell_y;
6076   GdkPixmap *row_pix;
6077   TreeViewDragInfo *di;
6078
6079   tree_view = PSPP_SHEET_VIEW (widget);
6080
6081   /* if the user uses a custom DND source impl, we don't set the icon here */
6082   di = get_info (tree_view);
6083
6084   if (di == NULL || !di->source_set)
6085     return;
6086
6087   pspp_sheet_view_get_path_at_pos (tree_view,
6088                                  tree_view->priv->press_start_x,
6089                                  tree_view->priv->press_start_y,
6090                                  &path,
6091                                  NULL,
6092                                  &cell_x,
6093                                  &cell_y);
6094
6095   g_return_if_fail (path != NULL);
6096
6097   row_pix = pspp_sheet_view_create_row_drag_icon (tree_view,
6098                                                 path);
6099
6100   gtk_drag_set_icon_pixmap (context,
6101                             gdk_drawable_get_colormap (row_pix),
6102                             row_pix,
6103                             NULL,
6104                             /* the + 1 is for the black border in the icon */
6105                             tree_view->priv->press_start_x + 1,
6106                             cell_y + 1);
6107
6108   g_object_unref (row_pix);
6109   gtk_tree_path_free (path);
6110 }
6111
6112 static void
6113 pspp_sheet_view_drag_end (GtkWidget      *widget,
6114                         GdkDragContext *context)
6115 {
6116   /* do nothing */
6117 }
6118
6119 /* Default signal implementations for the drag signals */
6120 static void
6121 pspp_sheet_view_drag_data_get (GtkWidget        *widget,
6122                              GdkDragContext   *context,
6123                              GtkSelectionData *selection_data,
6124                              guint             info,
6125                              guint             time)
6126 {
6127   PsppSheetView *tree_view;
6128   GtkTreeModel *model;
6129   TreeViewDragInfo *di;
6130   GtkTreePath *source_row;
6131
6132   tree_view = PSPP_SHEET_VIEW (widget);
6133
6134   model = pspp_sheet_view_get_model (tree_view);
6135
6136   if (model == NULL)
6137     return;
6138
6139   di = get_info (PSPP_SHEET_VIEW (widget));
6140
6141   if (di == NULL)
6142     return;
6143
6144   source_row = get_source_row (context);
6145
6146   if (source_row == NULL)
6147     return;
6148
6149   /* We can implement the GTK_TREE_MODEL_ROW target generically for
6150    * any model; for DragSource models there are some other targets
6151    * we also support.
6152    */
6153
6154   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
6155       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
6156                                           source_row,
6157                                           selection_data))
6158     goto done;
6159
6160   /* If drag_data_get does nothing, try providing row data. */
6161   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
6162     {
6163       gtk_tree_set_row_drag_data (selection_data,
6164                                   model,
6165                                   source_row);
6166     }
6167
6168  done:
6169   gtk_tree_path_free (source_row);
6170 }
6171
6172
6173 static void
6174 pspp_sheet_view_drag_data_delete (GtkWidget      *widget,
6175                                 GdkDragContext *context)
6176 {
6177   TreeViewDragInfo *di;
6178   GtkTreeModel *model;
6179   PsppSheetView *tree_view;
6180   GtkTreePath *source_row;
6181
6182   tree_view = PSPP_SHEET_VIEW (widget);
6183   model = pspp_sheet_view_get_model (tree_view);
6184
6185   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
6186     return;
6187
6188   di = get_info (tree_view);
6189
6190   if (di == NULL)
6191     return;
6192
6193   source_row = get_source_row (context);
6194
6195   if (source_row == NULL)
6196     return;
6197
6198   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
6199                                          source_row);
6200
6201   gtk_tree_path_free (source_row);
6202
6203   set_source_row (context, NULL, NULL);
6204 }
6205
6206 static void
6207 pspp_sheet_view_drag_leave (GtkWidget      *widget,
6208                           GdkDragContext *context,
6209                           guint             time)
6210 {
6211   /* unset any highlight row */
6212   pspp_sheet_view_set_drag_dest_row (PSPP_SHEET_VIEW (widget),
6213                                    NULL,
6214                                    PSPP_SHEET_VIEW_DROP_BEFORE);
6215
6216   remove_scroll_timeout (PSPP_SHEET_VIEW (widget));
6217 }
6218
6219
6220 static gboolean
6221 pspp_sheet_view_drag_motion (GtkWidget        *widget,
6222                            GdkDragContext   *context,
6223                            /* coordinates relative to the widget */
6224                            gint              x,
6225                            gint              y,
6226                            guint             time)
6227 {
6228   gboolean empty;
6229   GtkTreePath *path = NULL;
6230   PsppSheetViewDropPosition pos;
6231   PsppSheetView *tree_view;
6232   GdkDragAction suggested_action = 0;
6233   GdkAtom target;
6234
6235   tree_view = PSPP_SHEET_VIEW (widget);
6236
6237   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
6238     return FALSE;
6239
6240   pspp_sheet_view_get_drag_dest_row (tree_view, &path, &pos);
6241
6242   /* we only know this *after* set_desination_row */
6243   empty = tree_view->priv->empty_view_drop;
6244
6245   if (path == NULL && !empty)
6246     {
6247       /* Can't drop here. */
6248       gdk_drag_status (context, 0, time);
6249     }
6250   else
6251     {
6252       if (tree_view->priv->open_dest_timeout == 0 &&
6253           (pos == PSPP_SHEET_VIEW_DROP_INTO_OR_AFTER ||
6254            pos == PSPP_SHEET_VIEW_DROP_INTO_OR_BEFORE))
6255         {
6256           /* Nothing. */
6257         }
6258       else
6259         {
6260           add_scroll_timeout (tree_view);
6261         }
6262
6263       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
6264         {
6265           /* Request data so we can use the source row when
6266            * determining whether to accept the drop
6267            */
6268           set_status_pending (context, suggested_action);
6269           gtk_drag_get_data (widget, context, target, time);
6270         }
6271       else
6272         {
6273           set_status_pending (context, 0);
6274           gdk_drag_status (context, suggested_action, time);
6275         }
6276     }
6277
6278   if (path)
6279     gtk_tree_path_free (path);
6280
6281   return TRUE;
6282 }
6283
6284
6285 static gboolean
6286 pspp_sheet_view_drag_drop (GtkWidget        *widget,
6287                          GdkDragContext   *context,
6288                          /* coordinates relative to the widget */
6289                          gint              x,
6290                          gint              y,
6291                          guint             time)
6292 {
6293   PsppSheetView *tree_view;
6294   GtkTreePath *path;
6295   GdkDragAction suggested_action = 0;
6296   GdkAtom target = GDK_NONE;
6297   TreeViewDragInfo *di;
6298   GtkTreeModel *model;
6299   gboolean path_down_mode;
6300   gboolean drop_append_mode;
6301
6302   tree_view = PSPP_SHEET_VIEW (widget);
6303
6304   model = pspp_sheet_view_get_model (tree_view);
6305
6306   remove_scroll_timeout (PSPP_SHEET_VIEW (widget));
6307
6308   di = get_info (tree_view);
6309
6310   if (di == NULL)
6311     return FALSE;
6312
6313   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
6314     return FALSE;
6315
6316   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
6317     return FALSE;
6318
6319   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
6320
6321   if (target != GDK_NONE && path != NULL)
6322     {
6323       /* in case a motion had requested drag data, change things so we
6324        * treat drag data receives as a drop.
6325        */
6326       set_status_pending (context, 0);
6327       set_dest_row (context, model, path,
6328                     path_down_mode, tree_view->priv->empty_view_drop,
6329                     drop_append_mode);
6330     }
6331
6332   if (path)
6333     gtk_tree_path_free (path);
6334
6335   /* Unset this thing */
6336   pspp_sheet_view_set_drag_dest_row (PSPP_SHEET_VIEW (widget),
6337                                    NULL,
6338                                    PSPP_SHEET_VIEW_DROP_BEFORE);
6339
6340   if (target != GDK_NONE)
6341     {
6342       gtk_drag_get_data (widget, context, target, time);
6343       return TRUE;
6344     }
6345   else
6346     return FALSE;
6347 }
6348
6349 static void
6350 pspp_sheet_view_drag_data_received (GtkWidget        *widget,
6351                                   GdkDragContext   *context,
6352                                   /* coordinates relative to the widget */
6353                                   gint              x,
6354                                   gint              y,
6355                                   GtkSelectionData *selection_data,
6356                                   guint             info,
6357                                   guint             time)
6358 {
6359   GtkTreePath *path;
6360   TreeViewDragInfo *di;
6361   gboolean accepted = FALSE;
6362   GtkTreeModel *model;
6363   PsppSheetView *tree_view;
6364   GtkTreePath *dest_row;
6365   GdkDragAction suggested_action;
6366   gboolean path_down_mode;
6367   gboolean drop_append_mode;
6368
6369   tree_view = PSPP_SHEET_VIEW (widget);
6370
6371   model = pspp_sheet_view_get_model (tree_view);
6372
6373   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
6374     return;
6375
6376   di = get_info (tree_view);
6377
6378   if (di == NULL)
6379     return;
6380
6381   suggested_action = get_status_pending (context);
6382
6383   if (suggested_action)
6384     {
6385       /* We are getting this data due to a request in drag_motion,
6386        * rather than due to a request in drag_drop, so we are just
6387        * supposed to call drag_status, not actually paste in the
6388        * data.
6389        */
6390       path = get_logical_dest_row (tree_view, &path_down_mode,
6391                                    &drop_append_mode);
6392
6393       if (path == NULL)
6394         suggested_action = 0;
6395       else if (path_down_mode)
6396         gtk_tree_path_down (path);
6397
6398       if (suggested_action)
6399         {
6400           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
6401                                                      path,
6402                                                      selection_data))
6403             {
6404               if (path_down_mode)
6405                 {
6406                   path_down_mode = FALSE;
6407                   gtk_tree_path_up (path);
6408
6409                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
6410                                                              path,
6411                                                              selection_data))
6412                     suggested_action = 0;
6413                 }
6414               else
6415                 suggested_action = 0;
6416             }
6417         }
6418
6419       gdk_drag_status (context, suggested_action, time);
6420
6421       if (path)
6422         gtk_tree_path_free (path);
6423
6424       /* If you can't drop, remove user drop indicator until the next motion */
6425       if (suggested_action == 0)
6426         pspp_sheet_view_set_drag_dest_row (PSPP_SHEET_VIEW (widget),
6427                                          NULL,
6428                                          PSPP_SHEET_VIEW_DROP_BEFORE);
6429
6430       return;
6431     }
6432
6433   dest_row = get_dest_row (context, &path_down_mode);
6434
6435   if (dest_row == NULL)
6436     return;
6437
6438   if (selection_data->length >= 0)
6439     {
6440       if (path_down_mode)
6441         {
6442           gtk_tree_path_down (dest_row);
6443           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
6444                                                      dest_row, selection_data))
6445             gtk_tree_path_up (dest_row);
6446         }
6447     }
6448
6449   if (selection_data->length >= 0)
6450     {
6451       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
6452                                                  dest_row,
6453                                                  selection_data))
6454         accepted = TRUE;
6455     }
6456
6457   gtk_drag_finish (context,
6458                    accepted,
6459                    (context->action == GDK_ACTION_MOVE),
6460                    time);
6461
6462   if (gtk_tree_path_get_depth (dest_row) == 1
6463       && gtk_tree_path_get_indices (dest_row)[0] == 0)
6464     {
6465       /* special special case drag to "0", scroll to first item */
6466       if (!tree_view->priv->scroll_to_path)
6467         pspp_sheet_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
6468     }
6469
6470   gtk_tree_path_free (dest_row);
6471
6472   /* drop dest_row */
6473   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
6474 }
6475
6476
6477
6478 /* GtkContainer Methods
6479  */
6480
6481
6482 static void
6483 pspp_sheet_view_remove (GtkContainer *container,
6484                       GtkWidget    *widget)
6485 {
6486   PsppSheetView *tree_view = PSPP_SHEET_VIEW (container);
6487   PsppSheetViewChild *child = NULL;
6488   GList *tmp_list;
6489
6490   tmp_list = tree_view->priv->children;
6491   while (tmp_list)
6492     {
6493       child = tmp_list->data;
6494       if (child->widget == widget)
6495         {
6496           gtk_widget_unparent (widget);
6497
6498           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
6499           g_list_free_1 (tmp_list);
6500           g_slice_free (PsppSheetViewChild, child);
6501           return;
6502         }
6503
6504       tmp_list = tmp_list->next;
6505     }
6506
6507   tmp_list = tree_view->priv->columns;
6508
6509   while (tmp_list)
6510     {
6511       PsppSheetViewColumn *column;
6512       column = tmp_list->data;
6513       if (column->button == widget)
6514         {
6515           gtk_widget_unparent (widget);
6516           return;
6517         }
6518       tmp_list = tmp_list->next;
6519     }
6520 }
6521
6522 static void
6523 pspp_sheet_view_forall (GtkContainer *container,
6524                       gboolean      include_internals,
6525                       GtkCallback   callback,
6526                       gpointer      callback_data)
6527 {
6528   PsppSheetView *tree_view = PSPP_SHEET_VIEW (container);
6529   PsppSheetViewChild *child = NULL;
6530   PsppSheetViewColumn *column;
6531   GList *tmp_list;
6532
6533   tmp_list = tree_view->priv->children;
6534   while (tmp_list)
6535     {
6536       child = tmp_list->data;
6537       tmp_list = tmp_list->next;
6538
6539       (* callback) (child->widget, callback_data);
6540     }
6541   if (include_internals == FALSE)
6542     return;
6543
6544   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
6545     {
6546       column = tmp_list->data;
6547
6548       if (column->button)
6549         (* callback) (column->button, callback_data);
6550     }
6551 }
6552
6553 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
6554  * cells. If so we draw one big row-spanning focus rectangle.
6555  */
6556 static gboolean
6557 pspp_sheet_view_has_special_cell (PsppSheetView *tree_view)
6558 {
6559   GList *list;
6560
6561   if (tree_view->priv->special_cells != PSPP_SHEET_VIEW_SPECIAL_CELLS_DETECT)
6562     return tree_view->priv->special_cells = PSPP_SHEET_VIEW_SPECIAL_CELLS_YES;
6563
6564   for (list = tree_view->priv->columns; list; list = list->next)
6565     {
6566       if (!((PsppSheetViewColumn *)list->data)->visible)
6567         continue;
6568       if (_pspp_sheet_view_column_count_special_cells (list->data))
6569         return TRUE;
6570     }
6571
6572   return FALSE;
6573 }
6574
6575 static void
6576 pspp_sheet_view_focus_column (PsppSheetView *tree_view,
6577                               PsppSheetViewColumn *focus_column,
6578                               gboolean clamp_column_visible)
6579 {
6580   g_return_if_fail (focus_column != NULL);
6581
6582   tree_view->priv->focus_column = focus_column;
6583   if (!focus_column->button)
6584     {
6585       pspp_sheet_view_column_set_need_button (focus_column, TRUE);
6586       g_return_if_fail (focus_column->button != NULL);
6587     }
6588
6589   if (GTK_CONTAINER (tree_view)->focus_child != focus_column->button)
6590     gtk_widget_grab_focus (focus_column->button);
6591
6592   if (clamp_column_visible)
6593     pspp_sheet_view_clamp_column_visible (tree_view, focus_column, FALSE);
6594 }
6595
6596 /* Returns TRUE if the focus is within the headers, after the focus operation is
6597  * done
6598  */
6599 static gboolean
6600 pspp_sheet_view_header_focus (PsppSheetView      *tree_view,
6601                             GtkDirectionType  dir,
6602                             gboolean          clamp_column_visible)
6603 {
6604   GtkWidget *focus_child;
6605   PsppSheetViewColumn *focus_column;
6606   GList *last_column, *first_column;
6607   GList *tmp_list;
6608   gboolean rtl;
6609
6610   if (! PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE))
6611     return FALSE;
6612
6613   focus_child = GTK_CONTAINER (tree_view)->focus_child;
6614
6615   first_column = tree_view->priv->columns;
6616   while (first_column)
6617     {
6618       PsppSheetViewColumn *c = PSPP_SHEET_VIEW_COLUMN (first_column->data);
6619
6620       if (pspp_sheet_view_column_can_focus (c) && c->visible)
6621         break;
6622       first_column = first_column->next;
6623     }
6624
6625   /* No headers are visible, or are focusable.  We can't focus in or out.
6626    */
6627   if (first_column == NULL)
6628     return FALSE;
6629
6630   last_column = g_list_last (tree_view->priv->columns);
6631   while (last_column)
6632     {
6633       PsppSheetViewColumn *c = PSPP_SHEET_VIEW_COLUMN (last_column->data);
6634
6635       if (pspp_sheet_view_column_can_focus (c) && c->visible)
6636         break;
6637       last_column = last_column->prev;
6638     }
6639
6640
6641   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
6642
6643   switch (dir)
6644     {
6645     case GTK_DIR_TAB_BACKWARD:
6646     case GTK_DIR_TAB_FORWARD:
6647     case GTK_DIR_UP:
6648     case GTK_DIR_DOWN:
6649       if (focus_child == NULL)
6650         {
6651           if (tree_view->priv->focus_column != NULL &&
6652               pspp_sheet_view_column_can_focus (tree_view->priv->focus_column))
6653             focus_column = tree_view->priv->focus_column;
6654           else
6655             focus_column = first_column->data;
6656           pspp_sheet_view_focus_column (tree_view, focus_column,
6657                                         clamp_column_visible);
6658           return TRUE;
6659         }
6660       return FALSE;
6661
6662     case GTK_DIR_LEFT:
6663     case GTK_DIR_RIGHT:
6664       if (focus_child == NULL)
6665         {
6666           if (tree_view->priv->focus_column != NULL)
6667             focus_column = tree_view->priv->focus_column;
6668           else if (dir == GTK_DIR_LEFT)
6669             focus_column = last_column->data;
6670           else
6671             focus_column = first_column->data;
6672           pspp_sheet_view_focus_column (tree_view, focus_column,
6673                                         clamp_column_visible);
6674           return TRUE;
6675         }
6676
6677       if (gtk_widget_child_focus (focus_child, dir))
6678         {
6679           /* The focus moves inside the button. */
6680           /* This is probably a great example of bad UI */
6681           if (clamp_column_visible)
6682             pspp_sheet_view_clamp_column_visible (tree_view,
6683                                                   tree_view->priv->focus_column,
6684                                                   FALSE);
6685           return TRUE;
6686         }
6687
6688       /* We need to move the focus among the row of buttons. */
6689       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
6690         if (PSPP_SHEET_VIEW_COLUMN (tmp_list->data)->button == focus_child)
6691           break;
6692
6693       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
6694           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
6695         {
6696           gtk_widget_error_bell (GTK_WIDGET (tree_view));
6697           return TRUE;
6698         }
6699
6700       while (tmp_list)
6701         {
6702           PsppSheetViewColumn *column;
6703
6704           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
6705             tmp_list = tmp_list->next;
6706           else
6707             tmp_list = tmp_list->prev;
6708
6709           if (tmp_list == NULL)
6710             {
6711               g_warning ("Internal button not found");
6712               break;
6713             }
6714           column = tmp_list->data;
6715           if (column->button &&
6716               column->visible &&
6717               pspp_sheet_view_column_can_focus (column))
6718             {
6719               pspp_sheet_view_focus_column (tree_view, column,
6720                                             clamp_column_visible);
6721               return TRUE;
6722             }
6723         }
6724       return FALSE;
6725
6726     default:
6727       g_assert_not_reached ();
6728       break;
6729     }
6730
6731   return FALSE;
6732 }
6733
6734 /* This function returns in 'path' the first focusable path, if the given path
6735  * is already focusable, it's the returned one.
6736  *
6737  */
6738 static gboolean
6739 search_first_focusable_path (PsppSheetView  *tree_view,
6740                              GtkTreePath **path,
6741                              gboolean      search_forward,
6742                              int *new_node)
6743 {
6744   /* XXX this function is trivial given that the sheetview doesn't support
6745      separator rows */
6746   int node = -1;
6747
6748   if (!path || !*path)
6749     return FALSE;
6750
6751   _pspp_sheet_view_find_node (tree_view, *path, &node);
6752
6753   if (node < 0)
6754     return FALSE;
6755
6756   if (new_node)
6757     *new_node = node;
6758
6759   return (*path != NULL);
6760 }
6761
6762 static gint
6763 pspp_sheet_view_focus (GtkWidget        *widget,
6764                      GtkDirectionType  direction)
6765 {
6766   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
6767   GtkContainer *container = GTK_CONTAINER (widget);
6768   GtkWidget *focus_child;
6769
6770   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
6771     return FALSE;
6772
6773   focus_child = container->focus_child;
6774
6775   pspp_sheet_view_stop_editing (PSPP_SHEET_VIEW (widget), FALSE);
6776   /* Case 1.  Headers currently have focus. */
6777   if (focus_child)
6778     {
6779       switch (direction)
6780         {
6781         case GTK_DIR_LEFT:
6782         case GTK_DIR_RIGHT:
6783           pspp_sheet_view_header_focus (tree_view, direction, TRUE);
6784           return TRUE;
6785         case GTK_DIR_TAB_BACKWARD:
6786         case GTK_DIR_UP:
6787           return FALSE;
6788         case GTK_DIR_TAB_FORWARD:
6789         case GTK_DIR_DOWN:
6790           gtk_widget_grab_focus (widget);
6791           return TRUE;
6792         default:
6793           g_assert_not_reached ();
6794           return FALSE;
6795         }
6796     }
6797
6798   /* Case 2. We don't have focus at all. */
6799   if (!gtk_widget_has_focus (widget))
6800     {
6801       if (!pspp_sheet_view_header_focus (tree_view, direction, FALSE))
6802         gtk_widget_grab_focus (widget);
6803       return TRUE;
6804     }
6805
6806   /* Case 3. We have focus already. */
6807   if (direction == GTK_DIR_TAB_BACKWARD)
6808     return (pspp_sheet_view_header_focus (tree_view, direction, FALSE));
6809   else if (direction == GTK_DIR_TAB_FORWARD)
6810     return FALSE;
6811
6812   /* Other directions caught by the keybindings */
6813   gtk_widget_grab_focus (widget);
6814   return TRUE;
6815 }
6816
6817 static void
6818 pspp_sheet_view_grab_focus (GtkWidget *widget)
6819 {
6820   GTK_WIDGET_CLASS (pspp_sheet_view_parent_class)->grab_focus (widget);
6821
6822   pspp_sheet_view_focus_to_cursor (PSPP_SHEET_VIEW (widget));
6823 }
6824
6825 static void
6826 pspp_sheet_view_style_set (GtkWidget *widget,
6827                          GtkStyle *previous_style)
6828 {
6829   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
6830   GList *list;
6831   PsppSheetViewColumn *column;
6832
6833   if (gtk_widget_get_realized (widget))
6834     {
6835       gint i;
6836       PsppSheetViewPrivate *priv = PSPP_SHEET_VIEW (widget)->priv;
6837
6838       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
6839       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
6840       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
6841       for (i = 0; i < 5 ; ++i)
6842         {
6843           g_object_unref (priv->grid_line_gc[i]);
6844           priv->grid_line_gc[i] = gdk_gc_new (widget->window);
6845           gdk_gc_copy (priv->grid_line_gc[i], widget->style->text_aa_gc[i]);
6846         }
6847
6848       pspp_sheet_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
6849     }
6850
6851   gtk_widget_style_get (widget,
6852                         "expander-size", &tree_view->priv->expander_size,
6853                         NULL);
6854   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
6855
6856   for (list = tree_view->priv->columns; list; list = list->next)
6857     {
6858       column = list->data;
6859       _pspp_sheet_view_column_cell_set_dirty (column);
6860     }
6861
6862   tree_view->priv->fixed_height = -1;
6863
6864   /* Invalidate cached button style. */
6865   if (tree_view->priv->button_style)
6866     {
6867       g_object_unref (tree_view->priv->button_style);
6868       tree_view->priv->button_style = NULL;
6869     }
6870
6871   gtk_widget_queue_resize (widget);
6872 }
6873
6874
6875 static void
6876 pspp_sheet_view_set_focus_child (GtkContainer *container,
6877                                GtkWidget    *child)
6878 {
6879   PsppSheetView *tree_view = PSPP_SHEET_VIEW (container);
6880   GList *list;
6881
6882   for (list = tree_view->priv->columns; list; list = list->next)
6883     {
6884       if (PSPP_SHEET_VIEW_COLUMN (list->data)->button == child)
6885         {
6886           tree_view->priv->focus_column = PSPP_SHEET_VIEW_COLUMN (list->data);
6887           break;
6888         }
6889     }
6890
6891   GTK_CONTAINER_CLASS (pspp_sheet_view_parent_class)->set_focus_child (container, child);
6892 }
6893
6894 static void
6895 pspp_sheet_view_set_adjustments (PsppSheetView   *tree_view,
6896                                GtkAdjustment *hadj,
6897                                GtkAdjustment *vadj)
6898 {
6899   gboolean need_adjust = FALSE;
6900
6901   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
6902
6903   if (hadj)
6904     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
6905   else
6906     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
6907   if (vadj)
6908     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
6909   else
6910     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
6911
6912   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
6913     {
6914       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
6915                                             pspp_sheet_view_adjustment_changed,
6916                                             tree_view);
6917       g_object_unref (tree_view->priv->hadjustment);
6918     }
6919
6920   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
6921     {
6922       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
6923                                             pspp_sheet_view_adjustment_changed,
6924                                             tree_view);
6925       g_object_unref (tree_view->priv->vadjustment);
6926     }
6927
6928   if (tree_view->priv->hadjustment != hadj)
6929     {
6930       tree_view->priv->hadjustment = hadj;
6931       g_object_ref_sink (tree_view->priv->hadjustment);
6932
6933       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
6934                         G_CALLBACK (pspp_sheet_view_adjustment_changed),
6935                         tree_view);
6936       need_adjust = TRUE;
6937     }
6938
6939   if (tree_view->priv->vadjustment != vadj)
6940     {
6941       tree_view->priv->vadjustment = vadj;
6942       g_object_ref_sink (tree_view->priv->vadjustment);
6943
6944       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
6945                         G_CALLBACK (pspp_sheet_view_adjustment_changed),
6946                         tree_view);
6947       need_adjust = TRUE;
6948     }
6949
6950   if (need_adjust)
6951     pspp_sheet_view_adjustment_changed (NULL, tree_view);
6952 }
6953
6954
6955 static gboolean
6956 pspp_sheet_view_real_move_cursor (PsppSheetView       *tree_view,
6957                                 GtkMovementStep    step,
6958                                 gint               count)
6959 {
6960   GdkModifierType state;
6961
6962   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
6963   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
6964                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
6965                         step == GTK_MOVEMENT_DISPLAY_LINES ||
6966                         step == GTK_MOVEMENT_PAGES ||
6967                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
6968
6969   if (tree_view->priv->row_count == 0)
6970     return FALSE;
6971   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
6972     return FALSE;
6973
6974   pspp_sheet_view_stop_editing (tree_view, FALSE);
6975   PSPP_SHEET_VIEW_SET_FLAG (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS);
6976   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6977
6978   if (gtk_get_current_event_state (&state))
6979     {
6980       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
6981         tree_view->priv->ctrl_pressed = TRUE;
6982       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
6983         tree_view->priv->shift_pressed = TRUE;
6984     }
6985   /* else we assume not pressed */
6986
6987   switch (step)
6988     {
6989     case GTK_MOVEMENT_LOGICAL_POSITIONS:
6990       pspp_sheet_view_move_cursor_tab (tree_view, count);
6991       break;
6992     case GTK_MOVEMENT_VISUAL_POSITIONS:
6993       pspp_sheet_view_move_cursor_left_right (tree_view, count);
6994       break;
6995     case GTK_MOVEMENT_DISPLAY_LINES:
6996       pspp_sheet_view_move_cursor_up_down (tree_view, count);
6997       break;
6998     case GTK_MOVEMENT_PAGES:
6999       pspp_sheet_view_move_cursor_page_up_down (tree_view, count);
7000       break;
7001     case GTK_MOVEMENT_BUFFER_ENDS:
7002       pspp_sheet_view_move_cursor_start_end (tree_view, count);
7003       break;
7004     default:
7005       g_assert_not_reached ();
7006     }
7007
7008   tree_view->priv->ctrl_pressed = FALSE;
7009   tree_view->priv->shift_pressed = FALSE;
7010
7011   return TRUE;
7012 }
7013
7014 static void
7015 pspp_sheet_view_put (PsppSheetView *tree_view,
7016                    GtkWidget   *child_widget,
7017                    /* in bin_window coordinates */
7018                    gint         x,
7019                    gint         y,
7020                    gint         width,
7021                    gint         height)
7022 {
7023   PsppSheetViewChild *child;
7024
7025   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
7026   g_return_if_fail (GTK_IS_WIDGET (child_widget));
7027
7028   child = g_slice_new (PsppSheetViewChild);
7029
7030   child->widget = child_widget;
7031   child->x = x;
7032   child->y = y;
7033   child->width = width;
7034   child->height = height;
7035
7036   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
7037
7038   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
7039     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
7040
7041   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
7042 }
7043
7044 void
7045 _pspp_sheet_view_child_move_resize (PsppSheetView *tree_view,
7046                                   GtkWidget   *widget,
7047                                   /* in tree coordinates */
7048                                   gint         x,
7049                                   gint         y,
7050                                   gint         width,
7051                                   gint         height)
7052 {
7053   PsppSheetViewChild *child = NULL;
7054   GList *list;
7055   GdkRectangle allocation;
7056
7057   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
7058   g_return_if_fail (GTK_IS_WIDGET (widget));
7059
7060   for (list = tree_view->priv->children; list; list = list->next)
7061     {
7062       if (((PsppSheetViewChild *)list->data)->widget == widget)
7063         {
7064           child = list->data;
7065           break;
7066         }
7067     }
7068   if (child == NULL)
7069     return;
7070
7071   allocation.x = child->x = x;
7072   allocation.y = child->y = y;
7073   allocation.width = child->width = width;
7074   allocation.height = child->height = height;
7075
7076   if (gtk_widget_get_realized (widget))
7077     gtk_widget_size_allocate (widget, &allocation);
7078 }
7079
7080
7081 /* TreeModel Callbacks
7082  */
7083
7084 static void
7085 pspp_sheet_view_row_changed (GtkTreeModel *model,
7086                            GtkTreePath  *path,
7087                            GtkTreeIter  *iter,
7088                            gpointer      data)
7089 {
7090   PsppSheetView *tree_view = (PsppSheetView *)data;
7091   int node;
7092   gboolean free_path = FALSE;
7093   GtkTreePath *cursor_path;
7094
7095   g_return_if_fail (path != NULL || iter != NULL);
7096
7097   if (tree_view->priv->cursor != NULL)
7098     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7099   else
7100     cursor_path = NULL;
7101
7102   if (tree_view->priv->edited_column &&
7103       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
7104     pspp_sheet_view_stop_editing (tree_view, TRUE);
7105
7106   if (cursor_path != NULL)
7107     gtk_tree_path_free (cursor_path);
7108
7109   if (path == NULL)
7110     {
7111       path = gtk_tree_model_get_path (model, iter);
7112       free_path = TRUE;
7113     }
7114   else if (iter == NULL)
7115     gtk_tree_model_get_iter (model, iter, path);
7116
7117   _pspp_sheet_view_find_node (tree_view,
7118                               path,
7119                               &node);
7120
7121   if (node >= 0)
7122     {
7123       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
7124         pspp_sheet_view_node_queue_redraw (tree_view, node);
7125     }
7126
7127   if (free_path)
7128     gtk_tree_path_free (path);
7129 }
7130
7131 static void
7132 pspp_sheet_view_row_inserted (GtkTreeModel *model,
7133                             GtkTreePath  *path,
7134                             GtkTreeIter  *iter,
7135                             gpointer      data)
7136 {
7137   PsppSheetView *tree_view = (PsppSheetView *) data;
7138   gint *indices;
7139   int tmpnode = -1;
7140   gint height = tree_view->priv->fixed_height;
7141   gboolean free_path = FALSE;
7142   gboolean node_visible = TRUE;
7143
7144   g_return_if_fail (path != NULL || iter != NULL);
7145
7146   if (path == NULL)
7147     {
7148       path = gtk_tree_model_get_path (model, iter);
7149       free_path = TRUE;
7150     }
7151   else if (iter == NULL)
7152     gtk_tree_model_get_iter (model, iter, path);
7153
7154   tree_view->priv->row_count = gtk_tree_model_iter_n_children (model, NULL);
7155
7156   /* Update all row-references */
7157   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
7158   indices = gtk_tree_path_get_indices (path);
7159   tmpnode = indices[0];
7160
7161   range_tower_insert0 (tree_view->priv->selected, tmpnode, 1);
7162
7163   if (height > 0)
7164     {
7165       if (node_visible && node_is_visible (tree_view, tmpnode))
7166         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7167       else
7168         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
7169     }
7170   else
7171     install_presize_handler (tree_view);
7172   if (free_path)
7173     gtk_tree_path_free (path);
7174 }
7175
7176 static void
7177 pspp_sheet_view_row_deleted (GtkTreeModel *model,
7178                            GtkTreePath  *path,
7179                            gpointer      data)
7180 {
7181   PsppSheetView *tree_view = (PsppSheetView *)data;
7182   int node;
7183
7184   g_return_if_fail (path != NULL);
7185
7186   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
7187
7188   _pspp_sheet_view_find_node (tree_view, path, &node);
7189
7190   if (node < 0)
7191     return;
7192
7193   range_tower_delete (tree_view->priv->selected, node, 1);
7194
7195   /* Ensure we don't have a dangling pointer to a dead node */
7196   ensure_unprelighted (tree_view);
7197
7198   /* Cancel editting if we've started */
7199   pspp_sheet_view_stop_editing (tree_view, TRUE);
7200
7201   if (tree_view->priv->destroy_count_func)
7202     {
7203       gint child_count = 0;
7204       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
7205     }
7206
7207   tree_view->priv->row_count = gtk_tree_model_iter_n_children (model, NULL);
7208
7209   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
7210     {
7211       gtk_tree_row_reference_free (tree_view->priv->top_row);
7212       tree_view->priv->top_row = NULL;
7213     }
7214
7215   install_scroll_sync_handler (tree_view);
7216
7217   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7218
7219 #if 0
7220   if (helper_data.changed)
7221     g_signal_emit_by_name (tree_view->priv->selection, "changed");
7222 #endif
7223 }
7224
7225 static void
7226 pspp_sheet_view_rows_reordered (GtkTreeModel *model,
7227                               GtkTreePath  *parent,
7228                               GtkTreeIter  *iter,
7229                               gint         *new_order,
7230                               gpointer      data)
7231 {
7232   PsppSheetView *tree_view = PSPP_SHEET_VIEW (data);
7233   gint len;
7234
7235   /* XXX need to adjust selection */
7236   len = gtk_tree_model_iter_n_children (model, iter);
7237
7238   if (len < 2)
7239     return;
7240
7241   gtk_tree_row_reference_reordered (G_OBJECT (data),
7242                                     parent,
7243                                     iter,
7244                                     new_order);
7245
7246   if (gtk_tree_path_get_depth (parent) != 0)
7247     return;
7248
7249   if (tree_view->priv->edited_column)
7250     pspp_sheet_view_stop_editing (tree_view, TRUE);
7251
7252   /* we need to be unprelighted */
7253   ensure_unprelighted (tree_view);
7254
7255   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
7256
7257   pspp_sheet_view_dy_to_top_row (tree_view);
7258 }
7259
7260
7261 /* Internal tree functions
7262  */
7263
7264
7265 static void
7266 pspp_sheet_view_get_background_xrange (PsppSheetView       *tree_view,
7267                                      PsppSheetViewColumn *column,
7268                                      gint              *x1,
7269                                      gint              *x2)
7270 {
7271   PsppSheetViewColumn *tmp_column = NULL;
7272   gint total_width;
7273   GList *list;
7274   gboolean rtl;
7275
7276   if (x1)
7277     *x1 = 0;
7278
7279   if (x2)
7280     *x2 = 0;
7281
7282   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7283
7284   total_width = 0;
7285   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
7286        list;
7287        list = (rtl ? list->prev : list->next))
7288     {
7289       tmp_column = list->data;
7290
7291       if (tmp_column == column)
7292         break;
7293
7294       if (tmp_column->visible)
7295         total_width += tmp_column->width;
7296     }
7297
7298   if (tmp_column != column)
7299     {
7300       g_warning (G_STRLOC": passed-in column isn't in the tree");
7301       return;
7302     }
7303
7304   if (x1)
7305     *x1 = total_width;
7306
7307   if (x2)
7308     {
7309       if (column->visible)
7310         *x2 = total_width + column->width;
7311       else
7312         *x2 = total_width; /* width of 0 */
7313     }
7314 }
7315
7316 /* Make sure the node is visible vertically */
7317 static void
7318 pspp_sheet_view_clamp_node_visible (PsppSheetView *tree_view,
7319                                     int node)
7320 {
7321   gint node_dy, height;
7322   GtkTreePath *path = NULL;
7323
7324   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
7325     return;
7326
7327   /* just return if the node is visible, avoiding a costly expose */
7328   node_dy = pspp_sheet_view_node_find_offset (tree_view, node);
7329   height = ROW_HEIGHT (tree_view);
7330   if (node_dy >= tree_view->priv->vadjustment->value
7331       && node_dy + height <= (tree_view->priv->vadjustment->value
7332                               + tree_view->priv->vadjustment->page_size))
7333     return;
7334
7335   path = _pspp_sheet_view_find_path (tree_view, node);
7336   if (path)
7337     {
7338       /* We process updates because we want to clear old selected items when we scroll.
7339        * if this is removed, we get a "selection streak" at the bottom. */
7340       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
7341       pspp_sheet_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
7342       gtk_tree_path_free (path);
7343     }
7344 }
7345
7346 static void
7347 pspp_sheet_view_clamp_column_visible (PsppSheetView       *tree_view,
7348                                     PsppSheetViewColumn *column,
7349                                     gboolean           focus_to_cell)
7350 {
7351   gint x, width;
7352
7353   if (column == NULL)
7354     return;
7355
7356   x = column->allocation.x;
7357   width = column->allocation.width;
7358
7359   if (width > tree_view->priv->hadjustment->page_size)
7360     {
7361       /* The column is larger than the horizontal page size.  If the
7362        * column has cells which can be focussed individually, then we make
7363        * sure the cell which gets focus is fully visible (if even the
7364        * focus cell is bigger than the page size, we make sure the
7365        * left-hand side of the cell is visible).
7366        *
7367        * If the column does not have those so-called special cells, we
7368        * make sure the left-hand side of the column is visible.
7369        */
7370
7371       if (focus_to_cell && pspp_sheet_view_has_special_cell (tree_view))
7372         {
7373           GtkTreePath *cursor_path;
7374           GdkRectangle background_area, cell_area, focus_area;
7375
7376           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7377
7378           pspp_sheet_view_get_cell_area (tree_view,
7379                                        cursor_path, column, &cell_area);
7380           pspp_sheet_view_get_background_area (tree_view,
7381                                              cursor_path, column,
7382                                              &background_area);
7383
7384           gtk_tree_path_free (cursor_path);
7385
7386           _pspp_sheet_view_column_get_focus_area (column,
7387                                                 &background_area,
7388                                                 &cell_area,
7389                                                 &focus_area);
7390
7391           x = focus_area.x;
7392           width = focus_area.width;
7393
7394           if (width < tree_view->priv->hadjustment->page_size)
7395             {
7396               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
7397                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
7398                                           x + width - tree_view->priv->hadjustment->page_size);
7399               else if (tree_view->priv->hadjustment->value > x)
7400                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
7401             }
7402         }
7403
7404       gtk_adjustment_set_value (tree_view->priv->hadjustment,
7405                                 CLAMP (x,
7406                                        tree_view->priv->hadjustment->lower,
7407                                        tree_view->priv->hadjustment->upper
7408                                        - tree_view->priv->hadjustment->page_size));
7409     }
7410   else
7411     {
7412       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
7413           gtk_adjustment_set_value (tree_view->priv->hadjustment,
7414                                     x + width - tree_view->priv->hadjustment->page_size);
7415       else if (tree_view->priv->hadjustment->value > x)
7416         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
7417   }
7418 }
7419
7420 GtkTreePath *
7421 _pspp_sheet_view_find_path (PsppSheetView *tree_view,
7422                             int node)
7423 {
7424   GtkTreePath *path;
7425
7426   path = gtk_tree_path_new ();
7427   if (node >= 0)
7428     gtk_tree_path_append_index (path, node);
7429   return path;
7430 }
7431
7432 void
7433 _pspp_sheet_view_find_node (PsppSheetView  *tree_view,
7434                           GtkTreePath  *path,
7435                           int *node)
7436 {
7437   gint *indices = gtk_tree_path_get_indices (path);
7438   gint depth = gtk_tree_path_get_depth (path);
7439
7440   *node = -1;
7441   if (depth == 0 || indices[0] < 0 || indices[0] >= tree_view->priv->row_count)
7442     return;
7443   *node = indices[0];
7444 }
7445
7446 static void
7447 pspp_sheet_view_add_move_binding (GtkBindingSet  *binding_set,
7448                                 guint           keyval,
7449                                 guint           modmask,
7450                                 gboolean        add_shifted_binding,
7451                                 GtkMovementStep step,
7452                                 gint            count)
7453 {
7454
7455   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
7456                                 "move-cursor", 2,
7457                                 G_TYPE_ENUM, step,
7458                                 G_TYPE_INT, count);
7459
7460   if (add_shifted_binding)
7461     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
7462                                   "move-cursor", 2,
7463                                   G_TYPE_ENUM, step,
7464                                   G_TYPE_INT, count);
7465
7466   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
7467    return;
7468
7469   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
7470                                 "move-cursor", 2,
7471                                 G_TYPE_ENUM, step,
7472                                 G_TYPE_INT, count);
7473
7474   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
7475                                 "move-cursor", 2,
7476                                 G_TYPE_ENUM, step,
7477                                 G_TYPE_INT, count);
7478 }
7479
7480 static void
7481 pspp_sheet_view_set_column_drag_info (PsppSheetView       *tree_view,
7482                                     PsppSheetViewColumn *column)
7483 {
7484   PsppSheetViewColumn *left_column;
7485   PsppSheetViewColumn *cur_column = NULL;
7486   PsppSheetViewColumnReorder *reorder;
7487   gboolean rtl;
7488   GList *tmp_list;
7489   gint left;
7490
7491   /* We want to precalculate the motion list such that we know what column slots
7492    * are available.
7493    */
7494   left_column = NULL;
7495   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7496
7497   /* First, identify all possible drop spots */
7498   if (rtl)
7499     tmp_list = g_list_last (tree_view->priv->columns);
7500   else
7501     tmp_list = g_list_first (tree_view->priv->columns);
7502
7503   while (tmp_list)
7504     {
7505       cur_column = PSPP_SHEET_VIEW_COLUMN (tmp_list->data);
7506       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
7507
7508       if (cur_column->visible == FALSE)
7509         continue;
7510
7511       /* If it's not the column moving and func tells us to skip over the column, we continue. */
7512       if (left_column != column && cur_column != column &&
7513           tree_view->priv->column_drop_func &&
7514           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
7515         {
7516           left_column = cur_column;
7517           continue;
7518         }
7519       reorder = g_slice_new0 (PsppSheetViewColumnReorder);
7520       reorder->left_column = left_column;
7521       left_column = reorder->right_column = cur_column;
7522
7523       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
7524     }
7525
7526   /* Add the last one */
7527   if (tree_view->priv->column_drop_func == NULL ||
7528       ((left_column != column) &&
7529        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
7530     {
7531       reorder = g_slice_new0 (PsppSheetViewColumnReorder);
7532       reorder->left_column = left_column;
7533       reorder->right_column = NULL;
7534       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
7535     }
7536
7537   /* We quickly check to see if it even makes sense to reorder columns. */
7538   /* If there is nothing that can be moved, then we return */
7539
7540   if (tree_view->priv->column_drag_info == NULL)
7541     return;
7542
7543   /* We know there are always 2 slots possbile, as you can always return column. */
7544   /* If that's all there is, return */
7545   if (tree_view->priv->column_drag_info->next == NULL ||
7546       (tree_view->priv->column_drag_info->next->next == NULL &&
7547        ((PsppSheetViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
7548        ((PsppSheetViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
7549     {
7550       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
7551         g_slice_free (PsppSheetViewColumnReorder, tmp_list->data);
7552       g_list_free (tree_view->priv->column_drag_info);
7553       tree_view->priv->column_drag_info = NULL;
7554       return;
7555     }
7556   /* We fill in the ranges for the columns, now that we've isolated them */
7557   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
7558
7559   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
7560     {
7561       reorder = (PsppSheetViewColumnReorder *) tmp_list->data;
7562
7563       reorder->left_align = left;
7564       if (tmp_list->next != NULL)
7565         {
7566           g_assert (tmp_list->next->data);
7567           left = reorder->right_align = (reorder->right_column->allocation.x +
7568                                          reorder->right_column->allocation.width +
7569                                          ((PsppSheetViewColumnReorder *)tmp_list->next->data)->left_column->allocation.x)/2;
7570         }
7571       else
7572         {
7573           gint width;
7574
7575           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
7576           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
7577         }
7578     }
7579 }
7580
7581 void
7582 _pspp_sheet_view_column_start_drag (PsppSheetView       *tree_view,
7583                                   PsppSheetViewColumn *column)
7584 {
7585   GdkEvent *send_event;
7586   GtkAllocation allocation;
7587   gint x, y, width, height;
7588   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
7589   GdkDisplay *display = gdk_screen_get_display (screen);
7590
7591   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
7592   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
7593   g_return_if_fail (column->button);
7594
7595   pspp_sheet_view_set_column_drag_info (tree_view, column);
7596
7597   if (tree_view->priv->column_drag_info == NULL)
7598     return;
7599
7600   if (tree_view->priv->drag_window == NULL)
7601     {
7602       GdkWindowAttr attributes;
7603       guint attributes_mask;
7604
7605       attributes.window_type = GDK_WINDOW_CHILD;
7606       attributes.wclass = GDK_INPUT_OUTPUT;
7607       attributes.x = column->allocation.x;
7608       attributes.y = 0;
7609       attributes.width = column->allocation.width;
7610       attributes.height = column->allocation.height;
7611       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
7612       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
7613       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
7614       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
7615
7616       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
7617                                                      &attributes,
7618                                                      attributes_mask);
7619       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
7620     }
7621
7622   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
7623   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
7624
7625   gtk_grab_remove (column->button);
7626
7627   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
7628   send_event->crossing.send_event = TRUE;
7629   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
7630   send_event->crossing.subwindow = NULL;
7631   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
7632   send_event->crossing.time = GDK_CURRENT_TIME;
7633
7634   gtk_propagate_event (column->button, send_event);
7635   gdk_event_free (send_event);
7636
7637   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
7638   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
7639   send_event->button.send_event = TRUE;
7640   send_event->button.time = GDK_CURRENT_TIME;
7641   send_event->button.x = -1;
7642   send_event->button.y = -1;
7643   send_event->button.axes = NULL;
7644   send_event->button.state = 0;
7645   send_event->button.button = 1;
7646   send_event->button.device = gdk_display_get_core_pointer (display);
7647   send_event->button.x_root = 0;
7648   send_event->button.y_root = 0;
7649
7650   gtk_propagate_event (column->button, send_event);
7651   gdk_event_free (send_event);
7652
7653   /* Kids, don't try this at home */
7654   g_object_ref (column->button);
7655   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
7656   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
7657   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
7658   g_object_unref (column->button);
7659
7660   tree_view->priv->drag_column_x = column->allocation.x;
7661   allocation = column->allocation;
7662   allocation.x = 0;
7663   gtk_widget_size_allocate (column->button, &allocation);
7664   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
7665
7666   tree_view->priv->drag_column = column;
7667   gdk_window_show (tree_view->priv->drag_window);
7668
7669   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
7670   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
7671
7672   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7673   while (gtk_events_pending ())
7674     gtk_main_iteration ();
7675
7676   PSPP_SHEET_VIEW_SET_FLAG (tree_view, PSPP_SHEET_VIEW_IN_COLUMN_DRAG);
7677   gdk_pointer_grab (tree_view->priv->drag_window,
7678                     FALSE,
7679                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
7680                     NULL, NULL, GDK_CURRENT_TIME);
7681   gdk_keyboard_grab (tree_view->priv->drag_window,
7682                      FALSE,
7683                      GDK_CURRENT_TIME);
7684 }
7685
7686 void
7687 _pspp_sheet_view_queue_draw_node (PsppSheetView        *tree_view,
7688                                 int node,
7689                                 const GdkRectangle *clip_rect)
7690 {
7691   GdkRectangle rect;
7692
7693   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
7694     return;
7695
7696   rect.x = 0;
7697   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
7698
7699   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, node);
7700   rect.height = ROW_HEIGHT (tree_view);
7701
7702   if (clip_rect)
7703     {
7704       GdkRectangle new_rect;
7705
7706       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
7707
7708       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
7709     }
7710   else
7711     {
7712       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
7713     }
7714 }
7715
7716 static void
7717 pspp_sheet_view_queue_draw_path (PsppSheetView        *tree_view,
7718                                GtkTreePath        *path,
7719                                const GdkRectangle *clip_rect)
7720 {
7721   int node = -1;
7722
7723   _pspp_sheet_view_find_node (tree_view, path, &node);
7724
7725   if (node)
7726     _pspp_sheet_view_queue_draw_node (tree_view, node, clip_rect);
7727 }
7728
7729 static void
7730 pspp_sheet_view_focus_to_cursor (PsppSheetView *tree_view)
7731
7732 {
7733   GtkTreePath *cursor_path;
7734
7735   if ((tree_view->priv->row_count == 0) ||
7736       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
7737     return;
7738
7739   cursor_path = NULL;
7740   if (tree_view->priv->cursor)
7741     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7742
7743   if (cursor_path == NULL)
7744     {
7745       /* There's no cursor.  Move the cursor to the first selected row, if any
7746        * are selected, otherwise to the first row in the sheetview.
7747        */
7748       GList *selected_rows;
7749       GtkTreeModel *model;
7750       PsppSheetSelection *selection;
7751
7752       selection = pspp_sheet_view_get_selection (tree_view);
7753       selected_rows = pspp_sheet_selection_get_selected_rows (selection, &model);
7754
7755       if (selected_rows)
7756         {
7757           /* XXX we could avoid doing O(n) work to get this result */
7758           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
7759           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
7760           g_list_free (selected_rows);
7761         }
7762       else
7763         {
7764           cursor_path = gtk_tree_path_new_first ();
7765           search_first_focusable_path (tree_view, &cursor_path,
7766                                        TRUE, NULL);
7767         }
7768
7769       gtk_tree_row_reference_free (tree_view->priv->cursor);
7770       tree_view->priv->cursor = NULL;
7771
7772       if (cursor_path)
7773         {
7774           if (tree_view->priv->selection->type == PSPP_SHEET_SELECTION_MULTIPLE ||
7775               tree_view->priv->selection->type == PSPP_SHEET_SELECTION_RECTANGLE)
7776             pspp_sheet_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
7777           else
7778             pspp_sheet_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
7779         }
7780     }
7781
7782   if (cursor_path)
7783     {
7784       /* Now find a column for the cursor. */
7785       PSPP_SHEET_VIEW_SET_FLAG (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS);
7786
7787       pspp_sheet_view_queue_draw_path (tree_view, cursor_path, NULL);
7788       gtk_tree_path_free (cursor_path);
7789
7790       if (tree_view->priv->focus_column == NULL)
7791         {
7792           GList *list;
7793           for (list = tree_view->priv->columns; list; list = list->next)
7794             {
7795               if (PSPP_SHEET_VIEW_COLUMN (list->data)->visible)
7796                 {
7797                   tree_view->priv->focus_column = PSPP_SHEET_VIEW_COLUMN (list->data);
7798                   pspp_sheet_selection_unselect_all_columns (tree_view->priv->selection);
7799                   pspp_sheet_selection_select_column (tree_view->priv->selection, tree_view->priv->focus_column);
7800                   break;
7801                 }
7802             }
7803
7804         }
7805     }
7806 }
7807
7808 static gboolean
7809 pspp_sheet_view_move_cursor_up_down (PsppSheetView *tree_view,
7810                                    gint         count)
7811 {
7812   gint selection_count;
7813   int cursor_node = -1;
7814   int new_cursor_node = -1;
7815   GtkTreePath *cursor_path = NULL;
7816   gboolean grab_focus = TRUE;
7817
7818   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
7819     return FALSE;
7820
7821   cursor_path = NULL;
7822   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
7823     /* FIXME: we lost the cursor; should we get the first? */
7824     return FALSE;
7825
7826   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7827   _pspp_sheet_view_find_node (tree_view, cursor_path, &cursor_node);
7828
7829   if (cursor_node < 0)
7830     /* FIXME: we lost the cursor; should we get the first? */
7831     return FALSE;
7832
7833   selection_count = pspp_sheet_selection_count_selected_rows (tree_view->priv->selection);
7834
7835   if (selection_count == 0
7836       && tree_view->priv->selection->type != PSPP_SHEET_SELECTION_NONE
7837       && !tree_view->priv->ctrl_pressed)
7838     {
7839       /* Don't move the cursor, but just select the current node */
7840       new_cursor_node = cursor_node;
7841     }
7842   else
7843     {
7844       if (count == -1)
7845         new_cursor_node = pspp_sheet_view_node_prev (tree_view, cursor_node);
7846       else
7847         new_cursor_node = pspp_sheet_view_node_next (tree_view, cursor_node);
7848     }
7849
7850   gtk_tree_path_free (cursor_path);
7851
7852   if (new_cursor_node)
7853     {
7854       cursor_path = _pspp_sheet_view_find_path (tree_view, new_cursor_node);
7855
7856       search_first_focusable_path (tree_view, &cursor_path,
7857                                    (count != -1),
7858                                    &new_cursor_node);
7859
7860       if (cursor_path)
7861         gtk_tree_path_free (cursor_path);
7862     }
7863
7864   /*
7865    * If the list has only one item and multi-selection is set then select
7866    * the row (if not yet selected).
7867    */
7868   if ((tree_view->priv->selection->type == PSPP_SHEET_SELECTION_MULTIPLE ||
7869        tree_view->priv->selection->type == PSPP_SHEET_SELECTION_RECTANGLE) &&
7870       new_cursor_node < 0)
7871     {
7872       if (count == -1)
7873         new_cursor_node = pspp_sheet_view_node_next (tree_view, cursor_node);
7874       else
7875         new_cursor_node = pspp_sheet_view_node_prev (tree_view, cursor_node);
7876
7877       if (new_cursor_node < 0
7878           && !pspp_sheet_view_node_is_selected (tree_view, cursor_node))
7879         {
7880           new_cursor_node = cursor_node;
7881         }
7882       else
7883         {
7884           new_cursor_node = -1;
7885         }
7886     }
7887
7888   if (new_cursor_node >= 0)
7889     {
7890       cursor_path = _pspp_sheet_view_find_path (tree_view, new_cursor_node);
7891       pspp_sheet_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
7892       gtk_tree_path_free (cursor_path);
7893     }
7894   else
7895     {
7896       pspp_sheet_view_clamp_node_visible (tree_view, cursor_node);
7897
7898       if (!tree_view->priv->shift_pressed)
7899         {
7900           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
7901                                           count < 0 ?
7902                                           GTK_DIR_UP : GTK_DIR_DOWN))
7903             {
7904               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
7905
7906               if (toplevel)
7907                 gtk_widget_child_focus (toplevel,
7908                                         count < 0 ?
7909                                         GTK_DIR_TAB_BACKWARD :
7910                                         GTK_DIR_TAB_FORWARD);
7911
7912               grab_focus = FALSE;
7913             }
7914         }
7915       else
7916         {
7917           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7918         }
7919     }
7920
7921   if (grab_focus)
7922     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7923
7924   return new_cursor_node >= 0;
7925 }
7926
7927 static void
7928 pspp_sheet_view_move_cursor_page_up_down (PsppSheetView *tree_view,
7929                                         gint         count)
7930 {
7931   int cursor_node = -1;
7932   GtkTreePath *old_cursor_path = NULL;
7933   GtkTreePath *cursor_path = NULL;
7934   int start_cursor_node = -1;
7935   gint y;
7936   gint window_y;
7937   gint vertical_separator;
7938
7939   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
7940     return;
7941
7942   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
7943     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7944   else
7945     /* This is sorta weird.  Focus in should give us a cursor */
7946     return;
7947
7948   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
7949   _pspp_sheet_view_find_node (tree_view, old_cursor_path, &cursor_node);
7950
7951   if (cursor_node < 0)
7952     {
7953       /* FIXME: we lost the cursor.  Should we try to get one? */
7954       gtk_tree_path_free (old_cursor_path);
7955       return;
7956     }
7957
7958   y = pspp_sheet_view_node_find_offset (tree_view, cursor_node);
7959   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
7960   y += tree_view->priv->cursor_offset;
7961   y += count * (int)tree_view->priv->vadjustment->page_increment;
7962   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
7963
7964   if (y >= tree_view->priv->height)
7965     y = tree_view->priv->height - 1;
7966
7967   tree_view->priv->cursor_offset =
7968     pspp_sheet_view_find_offset (tree_view, y, &cursor_node);
7969
7970   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (tree_view))
7971     {
7972       cursor_node = pspp_sheet_view_node_next (tree_view, cursor_node);
7973       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (tree_view);
7974     }
7975
7976   y -= tree_view->priv->cursor_offset;
7977   cursor_path = _pspp_sheet_view_find_path (tree_view, cursor_node);
7978
7979   start_cursor_node = cursor_node;
7980
7981   if (! search_first_focusable_path (tree_view, &cursor_path,
7982                                      (count != -1),
7983                                      &cursor_node))
7984     {
7985       /* It looks like we reached the end of the view without finding
7986        * a focusable row.  We will step backwards to find the last
7987        * focusable row.
7988        */
7989       cursor_node = start_cursor_node;
7990       cursor_path = _pspp_sheet_view_find_path (tree_view, cursor_node);
7991
7992       search_first_focusable_path (tree_view, &cursor_path,
7993                                    (count == -1),
7994                                    &cursor_node);
7995     }
7996
7997   if (!cursor_path)
7998     goto cleanup;
7999
8000   /* update y */
8001   y = pspp_sheet_view_node_find_offset (tree_view, cursor_node);
8002
8003   pspp_sheet_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
8004
8005   y -= window_y;
8006   pspp_sheet_view_scroll_to_point (tree_view, -1, y);
8007   pspp_sheet_view_clamp_node_visible (tree_view, cursor_node);
8008   _pspp_sheet_view_queue_draw_node (tree_view, cursor_node, NULL);
8009
8010   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
8011     gtk_widget_error_bell (GTK_WIDGET (tree_view));
8012
8013   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8014
8015 cleanup:
8016   gtk_tree_path_free (old_cursor_path);
8017   gtk_tree_path_free (cursor_path);
8018 }
8019
8020 static void
8021 pspp_sheet_view_move_cursor_left_right (PsppSheetView *tree_view,
8022                                       gint         count)
8023 {
8024   int cursor_node = -1;
8025   GtkTreePath *cursor_path = NULL;
8026   PsppSheetViewColumn *column;
8027   GtkTreeIter iter;
8028   GList *list;
8029   gboolean found_column = FALSE;
8030   gboolean rtl;
8031
8032   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8033
8034   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8035     return;
8036
8037   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8038     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8039   else
8040     return;
8041
8042   _pspp_sheet_view_find_node (tree_view, cursor_path, &cursor_node);
8043   if (cursor_node < 0)
8044     return;
8045   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
8046     {
8047       gtk_tree_path_free (cursor_path);
8048       return;
8049     }
8050   gtk_tree_path_free (cursor_path);
8051
8052   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
8053   if (tree_view->priv->focus_column)
8054     {
8055       for (; list; list = (rtl ? list->prev : list->next))
8056         {
8057           if (list->data == tree_view->priv->focus_column)
8058             break;
8059         }
8060     }
8061
8062   while (list)
8063     {
8064       gboolean left, right;
8065
8066       column = list->data;
8067       if (column->visible == FALSE || column->row_head)
8068         goto loop_end;
8069
8070       pspp_sheet_view_column_cell_set_cell_data (column,
8071                                                tree_view->priv->model,
8072                                                &iter);
8073
8074       if (rtl)
8075         {
8076           right = list->prev ? TRUE : FALSE;
8077           left = list->next ? TRUE : FALSE;
8078         }
8079       else
8080         {
8081           left = list->prev ? TRUE : FALSE;
8082           right = list->next ? TRUE : FALSE;
8083         }
8084
8085       if (_pspp_sheet_view_column_cell_focus (column, count, left, right))
8086         {
8087           tree_view->priv->focus_column = column;
8088           found_column = TRUE;
8089           break;
8090         }
8091     loop_end:
8092       if (count == 1)
8093         list = rtl ? list->prev : list->next;
8094       else
8095         list = rtl ? list->next : list->prev;
8096     }
8097
8098   if (found_column)
8099     {
8100       _pspp_sheet_view_queue_draw_node (tree_view, cursor_node, NULL);
8101       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
8102       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8103     }
8104   else
8105     {
8106       gtk_widget_error_bell (GTK_WIDGET (tree_view));
8107     }
8108
8109   pspp_sheet_view_clamp_column_visible (tree_view,
8110                                       tree_view->priv->focus_column, TRUE);
8111 }
8112
8113 static gboolean
8114 try_move_cursor_tab (PsppSheetView *tree_view,
8115                      gboolean start_at_focus_column,
8116                      gint count)
8117 {
8118   PsppSheetViewColumn *column;
8119   GtkTreeIter iter;
8120   int cursor_node = -1;
8121   GtkTreePath *cursor_path = NULL;
8122   gboolean rtl;
8123   GList *list;
8124
8125   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8126     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8127   else
8128     return TRUE;
8129
8130   _pspp_sheet_view_find_node (tree_view, cursor_path, &cursor_node);
8131   if (cursor_node < 0)
8132     return TRUE;
8133   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
8134     {
8135       gtk_tree_path_free (cursor_path);
8136       return TRUE;
8137     }
8138   gtk_tree_path_free (cursor_path);
8139
8140   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
8141   if (start_at_focus_column)
8142     {
8143       list = (rtl
8144               ? g_list_last (tree_view->priv->columns)
8145               : g_list_first (tree_view->priv->columns));
8146       if (tree_view->priv->focus_column)
8147         {
8148           for (; list; list = (rtl ? list->prev : list->next))
8149             {
8150               if (list->data == tree_view->priv->focus_column)
8151                 break;
8152             }
8153         }
8154     }
8155   else
8156     {
8157       list = (rtl ^ (count == 1)
8158               ? g_list_first (tree_view->priv->columns)
8159               : g_list_last (tree_view->priv->columns));
8160     }
8161
8162   while (list)
8163     {
8164       gboolean left, right;
8165
8166       column = list->data;
8167       if (column->visible == FALSE || !column->tabbable)
8168         goto loop_end;
8169
8170       pspp_sheet_view_column_cell_set_cell_data (column,
8171                                                  tree_view->priv->model,
8172                                                  &iter);
8173
8174       if (rtl)
8175         {
8176           right = list->prev ? TRUE : FALSE;
8177           left = list->next ? TRUE : FALSE;
8178         }
8179       else
8180         {
8181           left = list->prev ? TRUE : FALSE;
8182           right = list->next ? TRUE : FALSE;
8183         }
8184
8185       if (column->tabbable
8186           && _pspp_sheet_view_column_cell_focus (column, count, left, right))
8187         {
8188           tree_view->priv->focus_column = column;
8189           _pspp_sheet_view_queue_draw_node (tree_view, cursor_node, NULL);
8190           g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
8191           gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8192           return TRUE;
8193         }
8194     loop_end:
8195       if (count == 1)
8196         list = rtl ? list->prev : list->next;
8197       else
8198         list = rtl ? list->next : list->prev;
8199     }
8200
8201   return FALSE;
8202 }
8203
8204 static void
8205 pspp_sheet_view_move_cursor_tab (PsppSheetView *tree_view,
8206                                  gint         count)
8207 {
8208   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8209     return;
8210
8211   if (!try_move_cursor_tab (tree_view, TRUE, count)
8212       && pspp_sheet_view_move_cursor_up_down (tree_view, count)
8213       && !try_move_cursor_tab (tree_view, FALSE, count))
8214     gtk_widget_error_bell (GTK_WIDGET (tree_view));
8215
8216   pspp_sheet_view_clamp_column_visible (tree_view,
8217                                         tree_view->priv->focus_column, TRUE);
8218 }
8219
8220 static void
8221 pspp_sheet_view_move_cursor_start_end (PsppSheetView *tree_view,
8222                                      gint         count)
8223 {
8224   int cursor_node;
8225   GtkTreePath *path;
8226   GtkTreePath *old_path;
8227
8228   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8229     return;
8230
8231   g_return_if_fail (tree_view->priv->row_count > 0);
8232
8233   pspp_sheet_view_get_cursor (tree_view, &old_path, NULL);
8234
8235   if (count == -1)
8236     {
8237       /* Now go forward to find the first focusable row. */
8238       path = _pspp_sheet_view_find_path (tree_view, 0);
8239       search_first_focusable_path (tree_view, &path,
8240                                    TRUE, &cursor_node);
8241     }
8242   else
8243     {
8244       /* Now go backwards to find last focusable row. */
8245       path = _pspp_sheet_view_find_path (tree_view, tree_view->priv->row_count - 1);
8246       search_first_focusable_path (tree_view, &path,
8247                                    FALSE, &cursor_node);
8248     }
8249
8250   if (!path)
8251     goto cleanup;
8252
8253   if (gtk_tree_path_compare (old_path, path))
8254     {
8255       pspp_sheet_view_real_set_cursor (tree_view, path, TRUE, TRUE);
8256       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8257     }
8258   else
8259     {
8260       gtk_widget_error_bell (GTK_WIDGET (tree_view));
8261     }
8262
8263 cleanup:
8264   gtk_tree_path_free (old_path);
8265   gtk_tree_path_free (path);
8266 }
8267
8268 static gboolean
8269 pspp_sheet_view_real_select_all (PsppSheetView *tree_view)
8270 {
8271   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8272     return FALSE;
8273
8274   if (tree_view->priv->selection->type != PSPP_SHEET_SELECTION_MULTIPLE &&
8275       tree_view->priv->selection->type != PSPP_SHEET_SELECTION_RECTANGLE)
8276     return FALSE;
8277
8278   pspp_sheet_selection_select_all (tree_view->priv->selection);
8279
8280   return TRUE;
8281 }
8282
8283 static gboolean
8284 pspp_sheet_view_real_unselect_all (PsppSheetView *tree_view)
8285 {
8286   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8287     return FALSE;
8288
8289   if (tree_view->priv->selection->type != PSPP_SHEET_SELECTION_MULTIPLE &&
8290       tree_view->priv->selection->type != PSPP_SHEET_SELECTION_RECTANGLE)
8291     return FALSE;
8292
8293   pspp_sheet_selection_unselect_all (tree_view->priv->selection);
8294
8295   return TRUE;
8296 }
8297
8298 static gboolean
8299 pspp_sheet_view_real_select_cursor_row (PsppSheetView *tree_view,
8300                                       gboolean     start_editing)
8301 {
8302   int new_node = -1;
8303   int cursor_node = -1;
8304   GtkTreePath *cursor_path = NULL;
8305   GtkTreeSelectMode mode = 0;
8306
8307   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8308     return FALSE;
8309
8310   if (tree_view->priv->cursor)
8311     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8312
8313   if (cursor_path == NULL)
8314     return FALSE;
8315
8316   _pspp_sheet_view_find_node (tree_view, cursor_path,
8317                               &cursor_node);
8318
8319   if (cursor_node < 0)
8320     {
8321       gtk_tree_path_free (cursor_path);
8322       return FALSE;
8323     }
8324
8325   if (!tree_view->priv->shift_pressed && start_editing &&
8326       tree_view->priv->focus_column)
8327     {
8328       if (pspp_sheet_view_start_editing (tree_view, cursor_path))
8329         {
8330           gtk_tree_path_free (cursor_path);
8331           return TRUE;
8332         }
8333     }
8334
8335   if (tree_view->priv->ctrl_pressed)
8336     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
8337   if (tree_view->priv->shift_pressed)
8338     mode |= GTK_TREE_SELECT_MODE_EXTEND;
8339
8340   _pspp_sheet_selection_internal_select_node (tree_view->priv->selection,
8341                                             cursor_node,
8342                                             cursor_path,
8343                                             mode,
8344                                             FALSE);
8345
8346   /* We bail out if the original (tree, node) don't exist anymore after
8347    * handling the selection-changed callback.  We do return TRUE because
8348    * the key press has been handled at this point.
8349    */
8350   _pspp_sheet_view_find_node (tree_view, cursor_path, &new_node);
8351
8352   if (cursor_node != new_node)
8353     return FALSE;
8354
8355   pspp_sheet_view_clamp_node_visible (tree_view, cursor_node);
8356
8357   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8358   _pspp_sheet_view_queue_draw_node (tree_view, cursor_node, NULL);
8359
8360   if (!tree_view->priv->shift_pressed)
8361     pspp_sheet_view_row_activated (tree_view, cursor_path,
8362                                  tree_view->priv->focus_column);
8363
8364   gtk_tree_path_free (cursor_path);
8365
8366   return TRUE;
8367 }
8368
8369 static gboolean
8370 pspp_sheet_view_real_toggle_cursor_row (PsppSheetView *tree_view)
8371 {
8372   int new_node = -1;
8373   int cursor_node = -1;
8374   GtkTreePath *cursor_path = NULL;
8375
8376   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8377     return FALSE;
8378
8379   cursor_path = NULL;
8380   if (tree_view->priv->cursor)
8381     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8382
8383   if (cursor_path == NULL)
8384     return FALSE;
8385
8386   _pspp_sheet_view_find_node (tree_view, cursor_path, &cursor_node);
8387   if (cursor_node < 0)
8388     {
8389       gtk_tree_path_free (cursor_path);
8390       return FALSE;
8391     }
8392
8393   _pspp_sheet_selection_internal_select_node (tree_view->priv->selection,
8394                                             cursor_node,
8395                                             cursor_path,
8396                                             GTK_TREE_SELECT_MODE_TOGGLE,
8397                                             FALSE);
8398
8399   /* We bail out if the original (tree, node) don't exist anymore after
8400    * handling the selection-changed callback.  We do return TRUE because
8401    * the key press has been handled at this point.
8402    */
8403   _pspp_sheet_view_find_node (tree_view, cursor_path, &new_node);
8404
8405   if (cursor_node != new_node)
8406     return FALSE;
8407
8408   pspp_sheet_view_clamp_node_visible (tree_view, cursor_node);
8409
8410   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8411   pspp_sheet_view_queue_draw_path (tree_view, cursor_path, NULL);
8412   gtk_tree_path_free (cursor_path);
8413
8414   return TRUE;
8415 }
8416
8417 static gboolean
8418 pspp_sheet_view_search_entry_flush_timeout (PsppSheetView *tree_view)
8419 {
8420   pspp_sheet_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
8421   tree_view->priv->typeselect_flush_timeout = 0;
8422
8423   return FALSE;
8424 }
8425
8426 /* Cut and paste from gtkwindow.c */
8427 static void
8428 send_focus_change (GtkWidget *widget,
8429                    gboolean   in)
8430 {
8431   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
8432
8433   g_object_ref (widget);
8434
8435  if (in)
8436     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
8437   else
8438     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
8439
8440   fevent->focus_change.type = GDK_FOCUS_CHANGE;
8441   fevent->focus_change.window = g_object_ref (widget->window);
8442   fevent->focus_change.in = in;
8443
8444   gtk_widget_event (widget, fevent);
8445
8446   g_object_notify (G_OBJECT (widget), "has-focus");
8447
8448   g_object_unref (widget);
8449   gdk_event_free (fevent);
8450 }
8451
8452 static void
8453 pspp_sheet_view_ensure_interactive_directory (PsppSheetView *tree_view)
8454 {
8455   GtkWidget *frame, *vbox, *toplevel;
8456   GdkScreen *screen;
8457
8458   if (tree_view->priv->search_custom_entry_set)
8459     return;
8460
8461   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
8462   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
8463
8464    if (tree_view->priv->search_window != NULL)
8465      {
8466        if (GTK_WINDOW (toplevel)->group)
8467          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
8468                                       GTK_WINDOW (tree_view->priv->search_window));
8469        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
8470          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
8471                                          GTK_WINDOW (tree_view->priv->search_window));
8472        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
8473        return;
8474      }
8475
8476   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
8477   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
8478
8479   if (GTK_WINDOW (toplevel)->group)
8480     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
8481                                  GTK_WINDOW (tree_view->priv->search_window));
8482
8483   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
8484                             GDK_WINDOW_TYPE_HINT_UTILITY);
8485   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
8486   g_signal_connect (tree_view->priv->search_window, "delete-event",
8487                     G_CALLBACK (pspp_sheet_view_search_delete_event),
8488                     tree_view);
8489   g_signal_connect (tree_view->priv->search_window, "key-press-event",
8490                     G_CALLBACK (pspp_sheet_view_search_key_press_event),
8491                     tree_view);
8492   g_signal_connect (tree_view->priv->search_window, "button-press-event",
8493                     G_CALLBACK (pspp_sheet_view_search_button_press_event),
8494                     tree_view);
8495   g_signal_connect (tree_view->priv->search_window, "scroll-event",
8496                     G_CALLBACK (pspp_sheet_view_search_scroll_event),
8497                     tree_view);
8498
8499   frame = gtk_frame_new (NULL);
8500   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
8501   gtk_widget_show (frame);
8502   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
8503
8504   vbox = gtk_vbox_new (FALSE, 0);
8505   gtk_widget_show (vbox);
8506   gtk_container_add (GTK_CONTAINER (frame), vbox);
8507   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
8508
8509   /* add entry */
8510   tree_view->priv->search_entry = gtk_entry_new ();
8511   gtk_widget_show (tree_view->priv->search_entry);
8512   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
8513                     G_CALLBACK (pspp_sheet_view_search_disable_popdown),
8514                     tree_view);
8515   g_signal_connect (tree_view->priv->search_entry,
8516                     "activate", G_CALLBACK (pspp_sheet_view_search_activate),
8517                     tree_view);
8518   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
8519                     "preedit-changed",
8520                     G_CALLBACK (pspp_sheet_view_search_preedit_changed),
8521                     tree_view);
8522   gtk_container_add (GTK_CONTAINER (vbox),
8523                      tree_view->priv->search_entry);
8524
8525   gtk_widget_realize (tree_view->priv->search_entry);
8526 }
8527
8528 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
8529  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
8530  */
8531 static gboolean
8532 pspp_sheet_view_real_start_interactive_search (PsppSheetView *tree_view,
8533                                              gboolean     keybinding)
8534 {
8535   /* We only start interactive search if we have focus or the columns
8536    * have focus.  If one of our children have focus, we don't want to
8537    * start the search.
8538    */
8539   GList *list;
8540   gboolean found_focus = FALSE;
8541   GtkWidgetClass *entry_parent_class;
8542
8543   if (!tree_view->priv->enable_search && !keybinding)
8544     return FALSE;
8545
8546   if (tree_view->priv->search_custom_entry_set)
8547     return FALSE;
8548
8549   if (tree_view->priv->search_window != NULL &&
8550       gtk_widget_get_visible (tree_view->priv->search_window))
8551     return TRUE;
8552
8553   for (list = tree_view->priv->columns; list; list = list->next)
8554     {
8555       PsppSheetViewColumn *column;
8556
8557       column = list->data;
8558       if (! column->visible)
8559         continue;
8560
8561       if (column->button && gtk_widget_has_focus (column->button))
8562         {
8563           found_focus = TRUE;
8564           break;
8565         }
8566     }
8567
8568   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8569     found_focus = TRUE;
8570
8571   if (!found_focus)
8572     return FALSE;
8573
8574   if (tree_view->priv->search_column < 0)
8575     return FALSE;
8576
8577   pspp_sheet_view_ensure_interactive_directory (tree_view);
8578
8579   if (keybinding)
8580     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
8581
8582   /* done, show it */
8583   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
8584   gtk_widget_show (tree_view->priv->search_window);
8585   if (tree_view->priv->search_entry_changed_id == 0)
8586     {
8587       tree_view->priv->search_entry_changed_id =
8588         g_signal_connect (tree_view->priv->search_entry, "changed",
8589                           G_CALLBACK (pspp_sheet_view_search_init),
8590                           tree_view);
8591     }
8592
8593   tree_view->priv->typeselect_flush_timeout =
8594     gdk_threads_add_timeout (PSPP_SHEET_VIEW_SEARCH_DIALOG_TIMEOUT,
8595                    (GSourceFunc) pspp_sheet_view_search_entry_flush_timeout,
8596                    tree_view);
8597
8598   /* Grab focus will select all the text.  We don't want that to happen, so we
8599    * call the parent instance and bypass the selection change.  This is probably
8600    * really non-kosher. */
8601   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
8602   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
8603
8604   /* send focus-in event */
8605   send_focus_change (tree_view->priv->search_entry, TRUE);
8606
8607   /* search first matching iter */
8608   pspp_sheet_view_search_init (tree_view->priv->search_entry, tree_view);
8609
8610   return TRUE;
8611 }
8612
8613 static gboolean
8614 pspp_sheet_view_start_interactive_search (PsppSheetView *tree_view)
8615 {
8616   return pspp_sheet_view_real_start_interactive_search (tree_view, TRUE);
8617 }
8618
8619 /* this function returns the new width of the column being resized given
8620  * the column and x position of the cursor; the x cursor position is passed
8621  * in as a pointer and automagicly corrected if it's beyond min/max limits
8622  */
8623 static gint
8624 pspp_sheet_view_new_column_width (PsppSheetView *tree_view,
8625                                 gint       i,
8626                                 gint      *x)
8627 {
8628   PsppSheetViewColumn *column;
8629   gint width;
8630   gboolean rtl;
8631
8632   /* first translate the x position from widget->window
8633    * to clist->clist_window
8634    */
8635   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8636   column = g_list_nth (tree_view->priv->columns, i)->data;
8637   width = rtl ? (column->allocation.x + column->allocation.width - *x) : (*x - column->allocation.x);
8638
8639   /* Clamp down the value */
8640   if (column->min_width == -1)
8641     width = MAX (column->button_request, width);
8642   else
8643     width = MAX (column->min_width, width);
8644   if (column->max_width != -1)
8645     width = MIN (width, column->max_width);
8646
8647   *x = rtl ? (column->allocation.x + column->allocation.width - width) : (column->allocation.x + width);
8648
8649   return width;
8650 }
8651
8652
8653 /* FIXME this adjust_allocation is a big cut-and-paste from
8654  * GtkCList, needs to be some "official" way to do this
8655  * factored out.
8656  */
8657 typedef struct
8658 {
8659   GdkWindow *window;
8660   int dx;
8661   int dy;
8662 } ScrollData;
8663
8664 /* The window to which widget->window is relative */
8665 #define ALLOCATION_WINDOW(widget)               \
8666    (!gtk_widget_get_has_window (widget) ?               \
8667     (widget)->window :                          \
8668      gdk_window_get_parent ((widget)->window))
8669
8670 static void
8671 adjust_allocation_recurse (GtkWidget *widget,
8672                            gpointer   data)
8673 {
8674   ScrollData *scroll_data = data;
8675
8676   /* Need to really size allocate instead of just poking
8677    * into widget->allocation if the widget is not realized.
8678    * FIXME someone figure out why this was.
8679    */
8680   if (!gtk_widget_get_realized (widget))
8681     {
8682       if (gtk_widget_get_visible (widget))
8683         {
8684           GdkRectangle tmp_rectangle = widget->allocation;
8685           tmp_rectangle.x += scroll_data->dx;
8686           tmp_rectangle.y += scroll_data->dy;
8687
8688           gtk_widget_size_allocate (widget, &tmp_rectangle);
8689         }
8690     }
8691   else
8692     {
8693       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
8694         {
8695           widget->allocation.x += scroll_data->dx;
8696           widget->allocation.y += scroll_data->dy;
8697
8698           if (GTK_IS_CONTAINER (widget))
8699             gtk_container_forall (GTK_CONTAINER (widget),
8700                                   adjust_allocation_recurse,
8701                                   data);
8702         }
8703     }
8704 }
8705
8706 static void
8707 adjust_allocation (GtkWidget *widget,
8708                    int        dx,
8709                    int        dy)
8710 {
8711   ScrollData scroll_data;
8712
8713   if (gtk_widget_get_realized (widget))
8714     scroll_data.window = ALLOCATION_WINDOW (widget);
8715   else
8716     scroll_data.window = NULL;
8717
8718   scroll_data.dx = dx;
8719   scroll_data.dy = dy;
8720
8721   adjust_allocation_recurse (widget, &scroll_data);
8722 }
8723
8724 void
8725 pspp_sheet_view_column_update_button (PsppSheetViewColumn *tree_column);
8726
8727 /* Callbacks */
8728 static void
8729 pspp_sheet_view_adjustment_changed (GtkAdjustment *adjustment,
8730                                   PsppSheetView   *tree_view)
8731 {
8732   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8733     {
8734       GList *list;
8735       gint dy;
8736
8737       gdk_window_move (tree_view->priv->bin_window,
8738                        - tree_view->priv->hadjustment->value,
8739                        TREE_VIEW_HEADER_HEIGHT (tree_view));
8740       gdk_window_move (tree_view->priv->header_window,
8741                        - tree_view->priv->hadjustment->value,
8742                        0);
8743       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
8744       if (dy)
8745         {
8746           update_prelight (tree_view,
8747                            tree_view->priv->event_last_x,
8748                            tree_view->priv->event_last_y - dy);
8749
8750           if (tree_view->priv->edited_column &&
8751               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
8752             {
8753               GList *list;
8754               GtkWidget *widget;
8755               PsppSheetViewChild *child = NULL;
8756
8757               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
8758               adjust_allocation (widget, 0, dy);
8759
8760               for (list = tree_view->priv->children; list; list = list->next)
8761                 {
8762                   child = (PsppSheetViewChild *)list->data;
8763                   if (child->widget == widget)
8764                     {
8765                       child->y += dy;
8766                       break;
8767                     }
8768                 }
8769             }
8770         }
8771       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
8772
8773       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
8774         {
8775           /* update our dy and top_row */
8776           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
8777
8778           if (!tree_view->priv->in_top_row_to_dy)
8779             pspp_sheet_view_dy_to_top_row (tree_view);
8780         }
8781
8782       for (list = tree_view->priv->columns; list; list = list->next)
8783         {
8784           PsppSheetViewColumn *column = list->data;
8785           GtkAllocation *allocation = &column->allocation;
8786
8787           if (span_intersects (allocation->x, allocation->width,
8788                                tree_view->priv->hadjustment->value,
8789                                GTK_WIDGET (tree_view)->allocation.width))
8790             {
8791               pspp_sheet_view_column_set_need_button (column, TRUE);
8792               if (!column->button)
8793                 pspp_sheet_view_column_update_button (column);
8794             }
8795         }
8796     }
8797 }
8798
8799 \f
8800
8801 /* Public methods
8802  */
8803
8804 /**
8805  * pspp_sheet_view_new:
8806  *
8807  * Creates a new #PsppSheetView widget.
8808  *
8809  * Return value: A newly created #PsppSheetView widget.
8810  **/
8811 GtkWidget *
8812 pspp_sheet_view_new (void)
8813 {
8814   return g_object_new (PSPP_TYPE_SHEET_VIEW, NULL);
8815 }
8816
8817 /**
8818  * pspp_sheet_view_new_with_model:
8819  * @model: the model.
8820  *
8821  * Creates a new #PsppSheetView widget with the model initialized to @model.
8822  *
8823  * Return value: A newly created #PsppSheetView widget.
8824  **/
8825 GtkWidget *
8826 pspp_sheet_view_new_with_model (GtkTreeModel *model)
8827 {
8828   return g_object_new (PSPP_TYPE_SHEET_VIEW, "model", model, NULL);
8829 }
8830
8831 /* Public Accessors
8832  */
8833
8834 /**
8835  * pspp_sheet_view_get_model:
8836  * @tree_view: a #PsppSheetView
8837  *
8838  * Returns the model the #PsppSheetView is based on.  Returns %NULL if the
8839  * model is unset.
8840  *
8841  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
8842  **/
8843 GtkTreeModel *
8844 pspp_sheet_view_get_model (PsppSheetView *tree_view)
8845 {
8846   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
8847
8848   return tree_view->priv->model;
8849 }
8850
8851 /**
8852  * pspp_sheet_view_set_model:
8853  * @tree_view: A #GtkTreeNode.
8854  * @model: (allow-none): The model.
8855  *
8856  * Sets the model for a #PsppSheetView.  If the @tree_view already has a model
8857  * set, it will remove it before setting the new model.  If @model is %NULL,
8858  * then it will unset the old model.
8859  **/
8860 void
8861 pspp_sheet_view_set_model (PsppSheetView  *tree_view,
8862                          GtkTreeModel *model)
8863 {
8864   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
8865   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
8866
8867   if (model == tree_view->priv->model)
8868     return;
8869
8870   if (tree_view->priv->scroll_to_path)
8871     {
8872       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
8873       tree_view->priv->scroll_to_path = NULL;
8874     }
8875
8876   if (tree_view->priv->model)
8877     {
8878       GList *tmplist = tree_view->priv->columns;
8879
8880       if (tree_view->priv->selected)
8881         range_tower_set0 (tree_view->priv->selected, 0, ULONG_MAX);
8882       pspp_sheet_view_stop_editing (tree_view, TRUE);
8883
8884       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8885                                             pspp_sheet_view_row_changed,
8886                                             tree_view);
8887       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8888                                             pspp_sheet_view_row_inserted,
8889                                             tree_view);
8890       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8891                                             pspp_sheet_view_row_deleted,
8892                                             tree_view);
8893       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8894                                             pspp_sheet_view_rows_reordered,
8895                                             tree_view);
8896
8897       for (; tmplist; tmplist = tmplist->next)
8898         _pspp_sheet_view_column_unset_model (tmplist->data,
8899                                            tree_view->priv->model);
8900
8901       tree_view->priv->prelight_node = -1;
8902
8903       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
8904       tree_view->priv->drag_dest_row = NULL;
8905       gtk_tree_row_reference_free (tree_view->priv->cursor);
8906       tree_view->priv->cursor = NULL;
8907       gtk_tree_row_reference_free (tree_view->priv->anchor);
8908       tree_view->priv->anchor = NULL;
8909       gtk_tree_row_reference_free (tree_view->priv->top_row);
8910       tree_view->priv->top_row = NULL;
8911       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
8912       tree_view->priv->scroll_to_path = NULL;
8913
8914       tree_view->priv->scroll_to_column = NULL;
8915
8916       g_object_unref (tree_view->priv->model);
8917
8918       tree_view->priv->search_column = -1;
8919       tree_view->priv->fixed_height = -1;
8920       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
8921       tree_view->priv->last_button_x = -1;
8922       tree_view->priv->last_button_y = -1;
8923     }
8924
8925   tree_view->priv->model = model;
8926
8927   if (tree_view->priv->model)
8928     {
8929       gint i;
8930
8931       if (tree_view->priv->search_column == -1)
8932         {
8933           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
8934             {
8935               GType type = gtk_tree_model_get_column_type (model, i);
8936
8937               if (g_value_type_transformable (type, G_TYPE_STRING))
8938                 {
8939                   tree_view->priv->search_column = i;
8940                   break;
8941                 }
8942             }
8943         }
8944
8945       g_object_ref (tree_view->priv->model);
8946       g_signal_connect (tree_view->priv->model,
8947                         "row-changed",
8948                         G_CALLBACK (pspp_sheet_view_row_changed),
8949                         tree_view);
8950       g_signal_connect (tree_view->priv->model,
8951                         "row-inserted",
8952                         G_CALLBACK (pspp_sheet_view_row_inserted),
8953                         tree_view);
8954       g_signal_connect (tree_view->priv->model,
8955                         "row-deleted",
8956                         G_CALLBACK (pspp_sheet_view_row_deleted),
8957                         tree_view);
8958       g_signal_connect (tree_view->priv->model,
8959                         "rows-reordered",
8960                         G_CALLBACK (pspp_sheet_view_rows_reordered),
8961                         tree_view);
8962
8963       tree_view->priv->row_count = gtk_tree_model_iter_n_children (tree_view->priv->model, NULL);
8964
8965       /*  FIXME: do I need to do this? pspp_sheet_view_create_buttons (tree_view); */
8966       install_presize_handler (tree_view);
8967     }
8968
8969   g_object_notify (G_OBJECT (tree_view), "model");
8970
8971   if (tree_view->priv->selection)
8972     _pspp_sheet_selection_emit_changed (tree_view->priv->selection);
8973
8974   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8975     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8976 }
8977
8978 /**
8979  * pspp_sheet_view_get_selection:
8980  * @tree_view: A #PsppSheetView.
8981  *
8982  * Gets the #PsppSheetSelection associated with @tree_view.
8983  *
8984  * Return value: A #PsppSheetSelection object.
8985  **/
8986 PsppSheetSelection *
8987 pspp_sheet_view_get_selection (PsppSheetView *tree_view)
8988 {
8989   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
8990
8991   return tree_view->priv->selection;
8992 }
8993
8994 /**
8995  * pspp_sheet_view_get_hadjustment:
8996  * @tree_view: A #PsppSheetView
8997  *
8998  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
8999  *
9000  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
9001  * used.
9002  **/
9003 GtkAdjustment *
9004 pspp_sheet_view_get_hadjustment (PsppSheetView *tree_view)
9005 {
9006   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
9007
9008   if (tree_view->priv->hadjustment == NULL)
9009     pspp_sheet_view_set_hadjustment (tree_view, NULL);
9010
9011   return tree_view->priv->hadjustment;
9012 }
9013
9014 /**
9015  * pspp_sheet_view_set_hadjustment:
9016  * @tree_view: A #PsppSheetView
9017  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
9018  *
9019  * Sets the #GtkAdjustment for the current horizontal aspect.
9020  **/
9021 void
9022 pspp_sheet_view_set_hadjustment (PsppSheetView   *tree_view,
9023                                GtkAdjustment *adjustment)
9024 {
9025   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9026
9027   pspp_sheet_view_set_adjustments (tree_view,
9028                                  adjustment,
9029                                  tree_view->priv->vadjustment);
9030
9031   g_object_notify (G_OBJECT (tree_view), "hadjustment");
9032 }
9033
9034 /**
9035  * pspp_sheet_view_get_vadjustment:
9036  * @tree_view: A #PsppSheetView
9037  *
9038  * Gets the #GtkAdjustment currently being used for the vertical aspect.
9039  *
9040  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
9041  * used.
9042  **/
9043 GtkAdjustment *
9044 pspp_sheet_view_get_vadjustment (PsppSheetView *tree_view)
9045 {
9046   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
9047
9048   if (tree_view->priv->vadjustment == NULL)
9049     pspp_sheet_view_set_vadjustment (tree_view, NULL);
9050
9051   return tree_view->priv->vadjustment;
9052 }
9053
9054 /**
9055  * pspp_sheet_view_set_vadjustment:
9056  * @tree_view: A #PsppSheetView
9057  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
9058  *
9059  * Sets the #GtkAdjustment for the current vertical aspect.
9060  **/
9061 void
9062 pspp_sheet_view_set_vadjustment (PsppSheetView   *tree_view,
9063                                GtkAdjustment *adjustment)
9064 {
9065   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9066
9067   pspp_sheet_view_set_adjustments (tree_view,
9068                                  tree_view->priv->hadjustment,
9069                                  adjustment);
9070
9071   g_object_notify (G_OBJECT (tree_view), "vadjustment");
9072 }
9073
9074 /* Column and header operations */
9075
9076 /**
9077  * pspp_sheet_view_get_headers_visible:
9078  * @tree_view: A #PsppSheetView.
9079  *
9080  * Returns %TRUE if the headers on the @tree_view are visible.
9081  *
9082  * Return value: Whether the headers are visible or not.
9083  **/
9084 gboolean
9085 pspp_sheet_view_get_headers_visible (PsppSheetView *tree_view)
9086 {
9087   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
9088
9089   return PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE);
9090 }
9091
9092 /**
9093  * pspp_sheet_view_set_headers_visible:
9094  * @tree_view: A #PsppSheetView.
9095  * @headers_visible: %TRUE if the headers are visible
9096  *
9097  * Sets the visibility state of the headers.
9098  **/
9099 void
9100 pspp_sheet_view_set_headers_visible (PsppSheetView *tree_view,
9101                                    gboolean     headers_visible)
9102 {
9103   gint x, y;
9104   GList *list;
9105   PsppSheetViewColumn *column;
9106
9107   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9108
9109   headers_visible = !! headers_visible;
9110
9111   if (PSPP_SHEET_VIEW_FLAG_SET (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE) == headers_visible)
9112     return;
9113
9114   if (headers_visible)
9115     PSPP_SHEET_VIEW_SET_FLAG (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE);
9116   else
9117     PSPP_SHEET_VIEW_UNSET_FLAG (tree_view, PSPP_SHEET_VIEW_HEADERS_VISIBLE);
9118
9119   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9120     {
9121       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
9122       if (headers_visible)
9123         {
9124           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
9125
9126           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
9127             pspp_sheet_view_map_buttons (tree_view);
9128         }
9129       else
9130         {
9131           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
9132
9133           for (list = tree_view->priv->columns; list; list = list->next)
9134             {
9135               column = list->data;
9136               if (column->button)
9137                 gtk_widget_unmap (column->button);
9138             }
9139           gdk_window_hide (tree_view->priv->header_window);
9140         }
9141     }
9142
9143   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
9144   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
9145   tree_view->priv->vadjustment->lower = 0;
9146   tree_view->priv->vadjustment->upper = tree_view->priv->height;
9147   gtk_adjustment_changed (tree_view->priv->vadjustment);
9148
9149   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9150
9151   g_object_notify (G_OBJECT (tree_view), "headers-visible");
9152 }
9153
9154 /**
9155  * pspp_sheet_view_columns_autosize:
9156  * @tree_view: A #PsppSheetView.
9157  *
9158  * Resizes all columns to their optimal width. Only works after the
9159  * treeview has been realized.
9160  **/
9161 void
9162 pspp_sheet_view_columns_autosize (PsppSheetView *tree_view)
9163 {
9164   gboolean dirty = FALSE;
9165   GList *list;
9166   PsppSheetViewColumn *column;
9167
9168   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9169
9170   for (list = tree_view->priv->columns; list; list = list->next)
9171     {
9172       column = list->data;
9173       _pspp_sheet_view_column_cell_set_dirty (column);
9174       dirty = TRUE;
9175     }
9176
9177   if (dirty)
9178     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9179 }
9180
9181 /**
9182  * pspp_sheet_view_set_headers_clickable:
9183  * @tree_view: A #PsppSheetView.
9184  * @setting: %TRUE if the columns are clickable.
9185  *
9186  * Allow the column title buttons to be clicked.
9187  **/
9188 void
9189 pspp_sheet_view_set_headers_clickable (PsppSheetView *tree_view,
9190                                      gboolean   setting)
9191 {
9192   GList *list;
9193
9194   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9195
9196   for (list = tree_view->priv->columns; list; list = list->next)
9197     pspp_sheet_view_column_set_clickable (PSPP_SHEET_VIEW_COLUMN (list->data), setting);
9198
9199   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
9200 }
9201
9202
9203 /**
9204  * pspp_sheet_view_get_headers_clickable:
9205  * @tree_view: A #PsppSheetView.
9206  *
9207  * Returns whether all header columns are clickable.
9208  *
9209  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
9210  *
9211  * Since: 2.10
9212  **/
9213 gboolean
9214 pspp_sheet_view_get_headers_clickable (PsppSheetView *tree_view)
9215 {
9216   GList *list;
9217
9218   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
9219
9220   for (list = tree_view->priv->columns; list; list = list->next)
9221     if (!PSPP_SHEET_VIEW_COLUMN (list->data)->clickable)
9222       return FALSE;
9223
9224   return TRUE;
9225 }
9226
9227 /**
9228  * pspp_sheet_view_set_rules_hint
9229  * @tree_view: a #PsppSheetView
9230  * @setting: %TRUE if the tree requires reading across rows
9231  *
9232  * This function tells GTK+ that the user interface for your
9233  * application requires users to read across tree rows and associate
9234  * cells with one another. By default, GTK+ will then render the tree
9235  * with alternating row colors. Do <emphasis>not</emphasis> use it
9236  * just because you prefer the appearance of the ruled tree; that's a
9237  * question for the theme. Some themes will draw tree rows in
9238  * alternating colors even when rules are turned off, and users who
9239  * prefer that appearance all the time can choose those themes. You
9240  * should call this function only as a <emphasis>semantic</emphasis>
9241  * hint to the theme engine that your tree makes alternating colors
9242  * useful from a functional standpoint (since it has lots of columns,
9243  * generally).
9244  *
9245  **/
9246 void
9247 pspp_sheet_view_set_rules_hint (PsppSheetView  *tree_view,
9248                               gboolean      setting)
9249 {
9250   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9251
9252   setting = setting != FALSE;
9253
9254   if (tree_view->priv->has_rules != setting)
9255     {
9256       tree_view->priv->has_rules = setting;
9257       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9258     }
9259
9260   g_object_notify (G_OBJECT (tree_view), "rules-hint");
9261 }
9262
9263 /**
9264  * pspp_sheet_view_get_rules_hint
9265  * @tree_view: a #PsppSheetView
9266  *
9267  * Gets the setting set by pspp_sheet_view_set_rules_hint().
9268  *
9269  * Return value: %TRUE if rules are useful for the user of this tree
9270  **/
9271 gboolean
9272 pspp_sheet_view_get_rules_hint (PsppSheetView  *tree_view)
9273 {
9274   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
9275
9276   return tree_view->priv->has_rules;
9277 }
9278
9279 /* Public Column functions
9280  */
9281
9282 /**
9283  * pspp_sheet_view_append_column:
9284  * @tree_view: A #PsppSheetView.
9285  * @column: The #PsppSheetViewColumn to add.
9286  *
9287  * Appends @column to the list of columns.
9288  *
9289  * Return value: The number of columns in @tree_view after appending.
9290  **/
9291 gint
9292 pspp_sheet_view_append_column (PsppSheetView       *tree_view,
9293                              PsppSheetViewColumn *column)
9294 {
9295   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), -1);
9296   g_return_val_if_fail (PSPP_IS_SHEET_VIEW_COLUMN (column), -1);
9297   g_return_val_if_fail (column->tree_view == NULL, -1);
9298
9299   return pspp_sheet_view_insert_column (tree_view, column, -1);
9300 }
9301
9302
9303 /**
9304  * pspp_sheet_view_remove_column:
9305  * @tree_view: A #PsppSheetView.
9306  * @column: The #PsppSheetViewColumn to remove.
9307  *
9308  * Removes @column from @tree_view.
9309  *
9310  * Return value: The number of columns in @tree_view after removing.
9311  **/
9312 gint
9313 pspp_sheet_view_remove_column (PsppSheetView       *tree_view,
9314                              PsppSheetViewColumn *column)
9315 {
9316   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), -1);
9317   g_return_val_if_fail (PSPP_IS_SHEET_VIEW_COLUMN (column), -1);
9318   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
9319
9320   if (tree_view->priv->focus_column == column)
9321     tree_view->priv->focus_column = NULL;
9322
9323   if (tree_view->priv->edited_column == column)
9324     {
9325       pspp_sheet_view_stop_editing (tree_view, TRUE);
9326
9327       /* no need to, but just to be sure ... */
9328       tree_view->priv->edited_column = NULL;
9329     }
9330
9331   _pspp_sheet_view_column_unset_tree_view (column);
9332
9333   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
9334   tree_view->priv->n_columns--;
9335
9336   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9337     {
9338       GList *list;
9339
9340       _pspp_sheet_view_column_unrealize_button (column);
9341       for (list = tree_view->priv->columns; list; list = list->next)
9342         {
9343           PsppSheetViewColumn *tmp_column;
9344
9345           tmp_column = PSPP_SHEET_VIEW_COLUMN (list->data);
9346           if (tmp_column->visible)
9347             _pspp_sheet_view_column_cell_set_dirty (tmp_column);
9348         }
9349
9350       if (tree_view->priv->n_columns == 0 &&
9351           pspp_sheet_view_get_headers_visible (tree_view) &&
9352           tree_view->priv->header_window)
9353         gdk_window_hide (tree_view->priv->header_window);
9354
9355       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9356     }
9357
9358   g_object_unref (column);
9359   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
9360
9361   return tree_view->priv->n_columns;
9362 }
9363
9364 /**
9365  * pspp_sheet_view_insert_column:
9366  * @tree_view: A #PsppSheetView.
9367  * @column: The #PsppSheetViewColumn to be inserted.
9368  * @position: The position to insert @column in.
9369  *
9370  * This inserts the @column into the @tree_view at @position.  If @position is
9371  * -1, then the column is inserted at the end.
9372  *
9373  * Return value: The number of columns in @tree_view after insertion.
9374  **/
9375 gint
9376 pspp_sheet_view_insert_column (PsppSheetView       *tree_view,
9377                              PsppSheetViewColumn *column,
9378                              gint               position)
9379 {
9380   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), -1);
9381   g_return_val_if_fail (PSPP_IS_SHEET_VIEW_COLUMN (column), -1);
9382   g_return_val_if_fail (column->tree_view == NULL, -1);
9383
9384   g_object_ref_sink (column);
9385
9386   if (tree_view->priv->n_columns == 0 &&
9387       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
9388       pspp_sheet_view_get_headers_visible (tree_view))
9389     {
9390       gdk_window_show (tree_view->priv->header_window);
9391     }
9392
9393   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
9394                                             column, position);
9395   tree_view->priv->n_columns++;
9396
9397   _pspp_sheet_view_column_set_tree_view (column, tree_view);
9398
9399   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9400     {
9401       GList *list;
9402
9403       _pspp_sheet_view_column_realize_button (column);
9404
9405       for (list = tree_view->priv->columns; list; list = list->next)
9406         {
9407           column = PSPP_SHEET_VIEW_COLUMN (list->data);
9408           if (column->visible)
9409             _pspp_sheet_view_column_cell_set_dirty (column);
9410         }
9411       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9412     }
9413
9414   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
9415
9416   return tree_view->priv->n_columns;
9417 }
9418
9419 /**
9420  * pspp_sheet_view_insert_column_with_attributes:
9421  * @tree_view: A #PsppSheetView
9422  * @position: The position to insert the new column in.
9423  * @title: The title to set the header to.
9424  * @cell: The #GtkCellRenderer.
9425  * @Varargs: A %NULL-terminated list of attributes.
9426  *
9427  * Creates a new #PsppSheetViewColumn and inserts it into the @tree_view at
9428  * @position.  If @position is -1, then the newly created column is inserted at
9429  * the end.  The column is initialized with the attributes given.
9430  *
9431  * Return value: The number of columns in @tree_view after insertion.
9432  **/
9433 gint
9434 pspp_sheet_view_insert_column_with_attributes (PsppSheetView     *tree_view,
9435                                              gint             position,
9436                                              const gchar     *title,
9437                                              GtkCellRenderer *cell,
9438                                              ...)
9439 {
9440   PsppSheetViewColumn *column;
9441   gchar *attribute;
9442   va_list args;
9443   gint column_id;
9444
9445   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), -1);
9446
9447   column = pspp_sheet_view_column_new ();
9448   pspp_sheet_view_column_set_title (column, title);
9449   pspp_sheet_view_column_pack_start (column, cell, TRUE);
9450
9451   va_start (args, cell);
9452
9453   attribute = va_arg (args, gchar *);
9454
9455   while (attribute != NULL)
9456     {
9457       column_id = va_arg (args, gint);
9458       pspp_sheet_view_column_add_attribute (column, cell, attribute, column_id);
9459       attribute = va_arg (args, gchar *);
9460     }
9461
9462   va_end (args);
9463
9464   pspp_sheet_view_insert_column (tree_view, column, position);
9465
9466   return tree_view->priv->n_columns;
9467 }
9468
9469 /**
9470  * pspp_sheet_view_insert_column_with_data_func:
9471  * @tree_view: a #PsppSheetView
9472  * @position: Position to insert, -1 for append
9473  * @title: column title
9474  * @cell: cell renderer for column
9475  * @func: function to set attributes of cell renderer
9476  * @data: data for @func
9477  * @dnotify: destroy notifier for @data
9478  *
9479  * Convenience function that inserts a new column into the #PsppSheetView
9480  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
9481  * attributes (normally using data from the model). See also
9482  * pspp_sheet_view_column_set_cell_data_func(), pspp_sheet_view_column_pack_start().
9483  *
9484  * Return value: number of columns in the tree view post-insert
9485  **/
9486 gint
9487 pspp_sheet_view_insert_column_with_data_func  (PsppSheetView               *tree_view,
9488                                              gint                       position,
9489                                              const gchar               *title,
9490                                              GtkCellRenderer           *cell,
9491                                              PsppSheetCellDataFunc        func,
9492                                              gpointer                   data,
9493                                              GDestroyNotify             dnotify)
9494 {
9495   PsppSheetViewColumn *column;
9496
9497   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), -1);
9498
9499   column = pspp_sheet_view_column_new ();
9500   pspp_sheet_view_column_set_title (column, title);
9501   pspp_sheet_view_column_pack_start (column, cell, TRUE);
9502   pspp_sheet_view_column_set_cell_data_func (column, cell, func, data, dnotify);
9503
9504   pspp_sheet_view_insert_column (tree_view, column, position);
9505
9506   return tree_view->priv->n_columns;
9507 }
9508
9509 /**
9510  * pspp_sheet_view_get_column:
9511  * @tree_view: A #PsppSheetView.
9512  * @n: The position of the column, counting from 0.
9513  *
9514  * Gets the #PsppSheetViewColumn at the given position in the #tree_view.
9515  *
9516  * Return value: The #PsppSheetViewColumn, or %NULL if the position is outside the
9517  * range of columns.
9518  **/
9519 PsppSheetViewColumn *
9520 pspp_sheet_view_get_column (PsppSheetView *tree_view,
9521                           gint         n)
9522 {
9523   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
9524
9525   if (n < 0 || n >= tree_view->priv->n_columns)
9526     return NULL;
9527
9528   if (tree_view->priv->columns == NULL)
9529     return NULL;
9530
9531   return PSPP_SHEET_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
9532 }
9533
9534 /**
9535  * pspp_sheet_view_get_columns:
9536  * @tree_view: A #PsppSheetView
9537  *
9538  * Returns a #GList of all the #PsppSheetViewColumn s currently in @tree_view.
9539  * The returned list must be freed with g_list_free ().
9540  *
9541  * Return value: (element-type PsppSheetViewColumn) (transfer container): A list of #PsppSheetViewColumn s
9542  **/
9543 GList *
9544 pspp_sheet_view_get_columns (PsppSheetView *tree_view)
9545 {
9546   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
9547
9548   return g_list_copy (tree_view->priv->columns);
9549 }
9550
9551 /**
9552  * pspp_sheet_view_move_column_after:
9553  * @tree_view: A #PsppSheetView
9554  * @column: The #PsppSheetViewColumn to be moved.
9555  * @base_column: (allow-none): The #PsppSheetViewColumn to be moved relative to, or %NULL.
9556  *
9557  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
9558  * @column is placed in the first position.
9559  **/
9560 void
9561 pspp_sheet_view_move_column_after (PsppSheetView       *tree_view,
9562                                  PsppSheetViewColumn *column,
9563                                  PsppSheetViewColumn *base_column)
9564 {
9565   GList *column_list_el, *base_el = NULL;
9566
9567   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9568
9569   column_list_el = g_list_find (tree_view->priv->columns, column);
9570   g_return_if_fail (column_list_el != NULL);
9571
9572   if (base_column)
9573     {
9574       base_el = g_list_find (tree_view->priv->columns, base_column);
9575       g_return_if_fail (base_el != NULL);
9576     }
9577
9578   if (column_list_el->prev == base_el)
9579     return;
9580
9581   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
9582   if (base_el == NULL)
9583     {
9584       column_list_el->prev = NULL;
9585       column_list_el->next = tree_view->priv->columns;
9586       if (column_list_el->next)
9587         column_list_el->next->prev = column_list_el;
9588       tree_view->priv->columns = column_list_el;
9589     }
9590   else
9591     {
9592       column_list_el->prev = base_el;
9593       column_list_el->next = base_el->next;
9594       if (column_list_el->next)
9595         column_list_el->next->prev = column_list_el;
9596       base_el->next = column_list_el;
9597     }
9598
9599   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9600     {
9601       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9602       pspp_sheet_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
9603     }
9604
9605   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
9606 }
9607
9608 /**
9609  * pspp_sheet_view_set_column_drag_function:
9610  * @tree_view: A #PsppSheetView.
9611  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
9612  * @user_data: (allow-none): User data to be passed to @func, or %NULL
9613  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
9614  *
9615  * Sets a user function for determining where a column may be dropped when
9616  * dragged.  This function is called on every column pair in turn at the
9617  * beginning of a column drag to determine where a drop can take place.  The
9618  * arguments passed to @func are: the @tree_view, the #PsppSheetViewColumn being
9619  * dragged, the two #PsppSheetViewColumn s determining the drop spot, and
9620  * @user_data.  If either of the #PsppSheetViewColumn arguments for the drop spot
9621  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
9622  * @tree_view reverts to the default behavior of allowing all columns to be
9623  * dropped everywhere.
9624  **/
9625 void
9626 pspp_sheet_view_set_column_drag_function (PsppSheetView               *tree_view,
9627                                         PsppSheetViewColumnDropFunc  func,
9628                                         gpointer                   user_data,
9629                                         GDestroyNotify             destroy)
9630 {
9631   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9632
9633   if (tree_view->priv->column_drop_func_data_destroy)
9634     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
9635
9636   tree_view->priv->column_drop_func = func;
9637   tree_view->priv->column_drop_func_data = user_data;
9638   tree_view->priv->column_drop_func_data_destroy = destroy;
9639 }
9640
9641 /**
9642  * pspp_sheet_view_scroll_to_point:
9643  * @tree_view: a #PsppSheetView
9644  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
9645  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
9646  *
9647  * Scrolls the tree view such that the top-left corner of the visible
9648  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
9649  * in tree coordinates.  The @tree_view must be realized before
9650  * this function is called.  If it isn't, you probably want to be
9651  * using pspp_sheet_view_scroll_to_cell().
9652  *
9653  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
9654  **/
9655 void
9656 pspp_sheet_view_scroll_to_point (PsppSheetView *tree_view,
9657                                gint         tree_x,
9658                                gint         tree_y)
9659 {
9660   GtkAdjustment *hadj;
9661   GtkAdjustment *vadj;
9662
9663   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9664   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
9665
9666   hadj = tree_view->priv->hadjustment;
9667   vadj = tree_view->priv->vadjustment;
9668
9669   if (tree_x != -1)
9670     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
9671   if (tree_y != -1)
9672     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
9673 }
9674
9675 /**
9676  * pspp_sheet_view_scroll_to_cell:
9677  * @tree_view: A #PsppSheetView.
9678  * @path: (allow-none): The path of the row to move to, or %NULL.
9679  * @column: (allow-none): The #PsppSheetViewColumn to move horizontally to, or %NULL.
9680  * @use_align: whether to use alignment arguments, or %FALSE.
9681  * @row_align: The vertical alignment of the row specified by @path.
9682  * @col_align: The horizontal alignment of the column specified by @column.
9683  *
9684  * Moves the alignments of @tree_view to the position specified by @column and
9685  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
9686  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
9687  * or @path need to be non-%NULL.  @row_align determines where the row is
9688  * placed, and @col_align determines where @column is placed.  Both are expected
9689  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
9690  * right/bottom alignment, 0.5 means center.
9691  *
9692  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
9693  * tree does the minimum amount of work to scroll the cell onto the screen.
9694  * This means that the cell will be scrolled to the edge closest to its current
9695  * position.  If the cell is currently visible on the screen, nothing is done.
9696  *
9697  * This function only works if the model is set, and @path is a valid row on the
9698  * model.  If the model changes before the @tree_view is realized, the centered
9699  * path will be modified to reflect this change.
9700  **/
9701 void
9702 pspp_sheet_view_scroll_to_cell (PsppSheetView       *tree_view,
9703                               GtkTreePath       *path,
9704                               PsppSheetViewColumn *column,
9705                               gboolean           use_align,
9706                               gfloat             row_align,
9707                               gfloat             col_align)
9708 {
9709   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9710   g_return_if_fail (tree_view->priv->model != NULL);
9711   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
9712   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
9713   g_return_if_fail (path != NULL || column != NULL);
9714
9715 #if 0
9716   g_print ("pspp_sheet_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
9717            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
9718 #endif
9719   row_align = CLAMP (row_align, 0.0, 1.0);
9720   col_align = CLAMP (col_align, 0.0, 1.0);
9721
9722
9723   /* Note: Despite the benefits that come from having one code path for the
9724    * scrolling code, we short-circuit validate_visible_area's immplementation as
9725    * it is much slower than just going to the point.
9726    */
9727   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
9728       !gtk_widget_get_realized (GTK_WIDGET (tree_view))
9729       /* XXX || GTK_WIDGET_ALLOC_NEEDED (tree_view) */)
9730     {
9731       if (tree_view->priv->scroll_to_path)
9732         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
9733
9734       tree_view->priv->scroll_to_path = NULL;
9735       tree_view->priv->scroll_to_column = NULL;
9736
9737       if (path)
9738         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
9739       if (column)
9740         tree_view->priv->scroll_to_column = column;
9741       tree_view->priv->scroll_to_use_align = use_align;
9742       tree_view->priv->scroll_to_row_align = row_align;
9743       tree_view->priv->scroll_to_col_align = col_align;
9744
9745       install_presize_handler (tree_view);
9746     }
9747   else
9748     {
9749       GdkRectangle cell_rect;
9750       GdkRectangle vis_rect;
9751       gint dest_x, dest_y;
9752
9753       pspp_sheet_view_get_background_area (tree_view, path, column, &cell_rect);
9754       pspp_sheet_view_get_visible_rect (tree_view, &vis_rect);
9755
9756       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
9757
9758       dest_x = vis_rect.x;
9759       dest_y = vis_rect.y;
9760
9761       if (column)
9762         {
9763           if (use_align)
9764             {
9765               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
9766             }
9767           else
9768             {
9769               if (cell_rect.x < vis_rect.x)
9770                 dest_x = cell_rect.x;
9771               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
9772                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
9773             }
9774         }
9775
9776       if (path)
9777         {
9778           if (use_align)
9779             {
9780               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
9781               dest_y = MAX (dest_y, 0);
9782             }
9783           else
9784             {
9785               if (cell_rect.y < vis_rect.y)
9786                 dest_y = cell_rect.y;
9787               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
9788                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
9789             }
9790         }
9791
9792       pspp_sheet_view_scroll_to_point (tree_view, dest_x, dest_y);
9793     }
9794 }
9795
9796 /**
9797  * pspp_sheet_view_row_activated:
9798  * @tree_view: A #PsppSheetView
9799  * @path: The #GtkTreePath to be activated.
9800  * @column: The #PsppSheetViewColumn to be activated.
9801  *
9802  * Activates the cell determined by @path and @column.
9803  **/
9804 void
9805 pspp_sheet_view_row_activated (PsppSheetView       *tree_view,
9806                              GtkTreePath       *path,
9807                              PsppSheetViewColumn *column)
9808 {
9809   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9810
9811   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
9812 }
9813
9814
9815 /**
9816  * pspp_sheet_view_get_reorderable:
9817  * @tree_view: a #PsppSheetView
9818  *
9819  * Retrieves whether the user can reorder the tree via drag-and-drop. See
9820  * pspp_sheet_view_set_reorderable().
9821  *
9822  * Return value: %TRUE if the tree can be reordered.
9823  **/
9824 gboolean
9825 pspp_sheet_view_get_reorderable (PsppSheetView *tree_view)
9826 {
9827   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
9828
9829   return tree_view->priv->reorderable;
9830 }
9831
9832 /**
9833  * pspp_sheet_view_set_reorderable:
9834  * @tree_view: A #PsppSheetView.
9835  * @reorderable: %TRUE, if the tree can be reordered.
9836  *
9837  * This function is a convenience function to allow you to reorder
9838  * models that support the #GtkDragSourceIface and the
9839  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
9840  * these.  If @reorderable is %TRUE, then the user can reorder the
9841  * model by dragging and dropping rows. The developer can listen to
9842  * these changes by connecting to the model's row_inserted and
9843  * row_deleted signals. The reordering is implemented by setting up
9844  * the tree view as a drag source and destination. Therefore, drag and
9845  * drop can not be used in a reorderable view for any other purpose.
9846  *
9847  * This function does not give you any degree of control over the order -- any
9848  * reordering is allowed.  If more control is needed, you should probably
9849  * handle drag and drop manually.
9850  **/
9851 void
9852 pspp_sheet_view_set_reorderable (PsppSheetView *tree_view,
9853                                gboolean     reorderable)
9854 {
9855   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9856
9857   reorderable = reorderable != FALSE;
9858
9859   if (tree_view->priv->reorderable == reorderable)
9860     return;
9861
9862   if (reorderable)
9863     {
9864       const GtkTargetEntry row_targets[] = {
9865         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
9866       };
9867
9868       pspp_sheet_view_enable_model_drag_source (tree_view,
9869                                               GDK_BUTTON1_MASK,
9870                                               row_targets,
9871                                               G_N_ELEMENTS (row_targets),
9872                                               GDK_ACTION_MOVE);
9873       pspp_sheet_view_enable_model_drag_dest (tree_view,
9874                                             row_targets,
9875                                             G_N_ELEMENTS (row_targets),
9876                                             GDK_ACTION_MOVE);
9877     }
9878   else
9879     {
9880       pspp_sheet_view_unset_rows_drag_source (tree_view);
9881       pspp_sheet_view_unset_rows_drag_dest (tree_view);
9882     }
9883
9884   tree_view->priv->reorderable = reorderable;
9885
9886   g_object_notify (G_OBJECT (tree_view), "reorderable");
9887 }
9888
9889 /* If CLEAR_AND_SELECT is true, then the row will be selected and, unless Shift
9890    is pressed, other rows will be unselected.
9891
9892    If CLAMP_NODE is true, then the sheetview will scroll to make the row
9893    visible. */
9894 static void
9895 pspp_sheet_view_real_set_cursor (PsppSheetView     *tree_view,
9896                                GtkTreePath     *path,
9897                                gboolean         clear_and_select,
9898                                gboolean         clamp_node)
9899 {
9900   int node = -1;
9901
9902   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9903     {
9904       GtkTreePath *cursor_path;
9905       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9906       pspp_sheet_view_queue_draw_path (tree_view, cursor_path, NULL);
9907       gtk_tree_path_free (cursor_path);
9908     }
9909
9910   gtk_tree_row_reference_free (tree_view->priv->cursor);
9911   tree_view->priv->cursor = NULL;
9912
9913   _pspp_sheet_view_find_node (tree_view, path, &node);
9914   tree_view->priv->cursor =
9915     gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9916                                       tree_view->priv->model,
9917                                       path);
9918
9919   if (tree_view->priv->row_count > 0)
9920     {
9921       int new_node = -1;
9922
9923       if (clear_and_select && !tree_view->priv->ctrl_pressed)
9924         {
9925           GtkTreeSelectMode mode = 0;
9926
9927           if (tree_view->priv->ctrl_pressed)
9928             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
9929           if (tree_view->priv->shift_pressed)
9930             mode |= GTK_TREE_SELECT_MODE_EXTEND;
9931
9932           _pspp_sheet_selection_internal_select_node (tree_view->priv->selection,
9933                                                     node, path, mode,
9934                                                     FALSE);
9935         }
9936
9937       /* We have to re-find tree and node here again, somebody might have
9938        * cleared the node or the whole tree in the PsppSheetSelection::changed
9939        * callback. If the nodes differ we bail out here.
9940        */
9941       _pspp_sheet_view_find_node (tree_view, path, &new_node);
9942
9943       if (node != new_node)
9944         return;
9945
9946       if (clamp_node)
9947         {
9948           pspp_sheet_view_clamp_node_visible (tree_view, node);
9949           _pspp_sheet_view_queue_draw_node (tree_view, node, NULL);
9950         }
9951     }
9952
9953   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9954 }
9955
9956 /**
9957  * pspp_sheet_view_get_cursor:
9958  * @tree_view: A #PsppSheetView
9959  * @path: (allow-none): A pointer to be filled with the current cursor path, or %NULL
9960  * @focus_column: (allow-none): A pointer to be filled with the current focus column, or %NULL
9961  *
9962  * Fills in @path and @focus_column with the current path and focus column.  If
9963  * the cursor isn't currently set, then *@path will be %NULL.  If no column
9964  * currently has focus, then *@focus_column will be %NULL.
9965  *
9966  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
9967  * you are done with it.
9968  **/
9969 void
9970 pspp_sheet_view_get_cursor (PsppSheetView        *tree_view,
9971                           GtkTreePath       **path,
9972                           PsppSheetViewColumn **focus_column)
9973 {
9974   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
9975
9976   if (path)
9977     {
9978       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9979         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9980       else
9981         *path = NULL;
9982     }
9983
9984   if (focus_column)
9985     {
9986       *focus_column = tree_view->priv->focus_column;
9987     }
9988 }
9989
9990 /**
9991  * pspp_sheet_view_set_cursor:
9992  * @tree_view: A #PsppSheetView
9993  * @path: A #GtkTreePath
9994  * @focus_column: (allow-none): A #PsppSheetViewColumn, or %NULL
9995  * @start_editing: %TRUE if the specified cell should start being edited.
9996  *
9997  * Sets the current keyboard focus to be at @path, and selects it.  This is
9998  * useful when you want to focus the user's attention on a particular row.  If
9999  * @focus_column is not %NULL, then focus is given to the column specified by
10000  * it. Additionally, if @focus_column is specified, and @start_editing is
10001  * %TRUE, then editing should be started in the specified cell.
10002  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
10003  * in order to give keyboard focus to the widget.  Please note that editing
10004  * can only happen when the widget is realized.
10005  *
10006  * If @path is invalid for @model, the current cursor (if any) will be unset
10007  * and the function will return without failing.
10008  **/
10009 void
10010 pspp_sheet_view_set_cursor (PsppSheetView       *tree_view,
10011                           GtkTreePath       *path,
10012                           PsppSheetViewColumn *focus_column,
10013                           gboolean           start_editing)
10014 {
10015   pspp_sheet_view_set_cursor_on_cell (tree_view, path, focus_column,
10016                                     NULL, start_editing);
10017 }
10018
10019 /**
10020  * pspp_sheet_view_set_cursor_on_cell:
10021  * @tree_view: A #PsppSheetView
10022  * @path: A #GtkTreePath
10023  * @focus_column: (allow-none): A #PsppSheetViewColumn, or %NULL
10024  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
10025  * @start_editing: %TRUE if the specified cell should start being edited.
10026  *
10027  * Sets the current keyboard focus to be at @path, and selects it.  This is
10028  * useful when you want to focus the user's attention on a particular row.  If
10029  * @focus_column is not %NULL, then focus is given to the column specified by
10030  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
10031  * contains 2 or more editable or activatable cells, then focus is given to
10032  * the cell specified by @focus_cell. Additionally, if @focus_column is
10033  * specified, and @start_editing is %TRUE, then editing should be started in
10034  * the specified cell.  This function is often followed by
10035  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
10036  * widget.  Please note that editing can only happen when the widget is
10037  * realized.
10038  *
10039  * If @path is invalid for @model, the current cursor (if any) will be unset
10040  * and the function will return without failing.
10041  *
10042  * Since: 2.2
10043  **/
10044 void
10045 pspp_sheet_view_set_cursor_on_cell (PsppSheetView       *tree_view,
10046                                   GtkTreePath       *path,
10047                                   PsppSheetViewColumn *focus_column,
10048                                   GtkCellRenderer   *focus_cell,
10049                                   gboolean           start_editing)
10050 {
10051   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10052   g_return_if_fail (path != NULL);
10053   g_return_if_fail (focus_column == NULL || PSPP_IS_SHEET_VIEW_COLUMN (focus_column));
10054
10055   if (!tree_view->priv->model)
10056     return;
10057
10058   if (focus_cell)
10059     {
10060       g_return_if_fail (focus_column);
10061       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
10062     }
10063
10064   /* cancel the current editing, if it exists */
10065   if (tree_view->priv->edited_column &&
10066       tree_view->priv->edited_column->editable_widget)
10067     pspp_sheet_view_stop_editing (tree_view, TRUE);
10068
10069   pspp_sheet_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10070
10071   if (focus_column && focus_column->visible)
10072     {
10073       GList *list;
10074       gboolean column_in_tree = FALSE;
10075
10076       for (list = tree_view->priv->columns; list; list = list->next)
10077         if (list->data == focus_column)
10078           {
10079             column_in_tree = TRUE;
10080             break;
10081           }
10082       g_return_if_fail (column_in_tree);
10083       tree_view->priv->focus_column = focus_column;
10084       if (focus_cell)
10085         pspp_sheet_view_column_focus_cell (focus_column, focus_cell);
10086       if (start_editing)
10087         pspp_sheet_view_start_editing (tree_view, path);
10088
10089       pspp_sheet_selection_unselect_all_columns (tree_view->priv->selection);
10090       pspp_sheet_selection_select_column (tree_view->priv->selection, focus_column);
10091
10092     }
10093 }
10094
10095 /**
10096  * pspp_sheet_view_get_bin_window:
10097  * @tree_view: A #PsppSheetView
10098  *
10099  * Returns the window that @tree_view renders to.  This is used primarily to
10100  * compare to <literal>event->window</literal> to confirm that the event on
10101  * @tree_view is on the right window.
10102  *
10103  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
10104  **/
10105 GdkWindow *
10106 pspp_sheet_view_get_bin_window (PsppSheetView *tree_view)
10107 {
10108   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
10109
10110   return tree_view->priv->bin_window;
10111 }
10112
10113 /**
10114  * pspp_sheet_view_get_path_at_pos:
10115  * @tree_view: A #PsppSheetView.
10116  * @x: The x position to be identified (relative to bin_window).
10117  * @y: The y position to be identified (relative to bin_window).
10118  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
10119  * @column: (out) (allow-none): A pointer to a #PsppSheetViewColumn pointer to be filled in, or %NULL
10120  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
10121  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
10122  *
10123  * Finds the path at the point (@x, @y), relative to bin_window coordinates
10124  * (please see pspp_sheet_view_get_bin_window()).
10125  * That is, @x and @y are relative to an events coordinates. @x and @y must
10126  * come from an event on the @tree_view only where <literal>event->window ==
10127  * pspp_sheet_view_get_bin_window (<!-- -->)</literal>. It is primarily for
10128  * things like popup menus. If @path is non-%NULL, then it will be filled
10129  * with the #GtkTreePath at that point.  This path should be freed with
10130  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
10131  * with the column at that point.  @cell_x and @cell_y return the coordinates
10132  * relative to the cell background (i.e. the @background_area passed to
10133  * gtk_cell_renderer_render()).  This function is only meaningful if
10134  * @tree_view is realized.  Therefore this function will always return %FALSE
10135  * if @tree_view is not realized or does not have a model.
10136  *
10137  * For converting widget coordinates (eg. the ones you get from
10138  * GtkWidget::query-tooltip), please see
10139  * pspp_sheet_view_convert_widget_to_bin_window_coords().
10140  *
10141  * Return value: %TRUE if a row exists at that coordinate.
10142  **/
10143 gboolean
10144 pspp_sheet_view_get_path_at_pos (PsppSheetView        *tree_view,
10145                                gint                x,
10146                                gint                y,
10147                                GtkTreePath       **path,
10148                                PsppSheetViewColumn **column,
10149                                gint               *cell_x,
10150                                gint               *cell_y)
10151 {
10152   int node;
10153   gint y_offset;
10154
10155   g_return_val_if_fail (tree_view != NULL, FALSE);
10156
10157   if (path)
10158     *path = NULL;
10159   if (column)
10160     *column = NULL;
10161
10162   if (tree_view->priv->bin_window == NULL)
10163     return FALSE;
10164
10165   if (tree_view->priv->row_count == 0)
10166     return FALSE;
10167
10168   if (x > tree_view->priv->hadjustment->upper)
10169     return FALSE;
10170
10171   if (x < 0 || y < 0)
10172     return FALSE;
10173
10174   if (column || cell_x)
10175     {
10176       PsppSheetViewColumn *tmp_column;
10177       PsppSheetViewColumn *last_column = NULL;
10178       GList *list;
10179       gint remaining_x = x;
10180       gboolean found = FALSE;
10181       gboolean rtl;
10182
10183       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10184       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
10185            list;
10186            list = (rtl ? list->prev : list->next))
10187         {
10188           tmp_column = list->data;
10189
10190           if (tmp_column->visible == FALSE)
10191             continue;
10192
10193           last_column = tmp_column;
10194           if (remaining_x <= tmp_column->width)
10195             {
10196               found = TRUE;
10197
10198               if (column)
10199                 *column = tmp_column;
10200
10201               if (cell_x)
10202                 *cell_x = remaining_x;
10203
10204               break;
10205             }
10206           remaining_x -= tmp_column->width;
10207         }
10208
10209       /* If found is FALSE and there is a last_column, then it the remainder
10210        * space is in that area
10211        */
10212       if (!found)
10213         {
10214           if (last_column)
10215             {
10216               if (column)
10217                 *column = last_column;
10218
10219               if (cell_x)
10220                 *cell_x = last_column->width + remaining_x;
10221             }
10222           else
10223             {
10224               return FALSE;
10225             }
10226         }
10227     }
10228
10229   y_offset = pspp_sheet_view_find_offset (tree_view,
10230                                           TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
10231                                           &node);
10232
10233   if (node < 0)
10234     return FALSE;
10235
10236   if (cell_y)
10237     *cell_y = y_offset;
10238
10239   if (path)
10240     *path = _pspp_sheet_view_find_path (tree_view, node);
10241
10242   return TRUE;
10243 }
10244
10245 /* Computes 'cell_area' from 'background_area', which must be the background
10246    area for a cell.  Set 'subtract_focus_rect' to TRUE to compute the cell area
10247    as passed to a GtkCellRenderer's "render" function, or to FALSE to compute
10248    the cell area as passed to _pspp_sheet_view_column_cell_render().
10249
10250    'column' is required to properly adjust 'cell_area->x' and
10251    'cell_area->width'.  It may be set to NULL if these values are not of
10252    interest.  In this case 'cell_area->x' and 'cell_area->width' will be
10253    returned as 0. */
10254 static void
10255 pspp_sheet_view_adjust_cell_area (PsppSheetView        *tree_view,
10256                                   PsppSheetViewColumn  *column,
10257                                   const GdkRectangle   *background_area,
10258                                   gboolean              subtract_focus_rect,
10259                                   GdkRectangle         *cell_area)
10260 {
10261   gint vertical_separator;
10262   gint horizontal_separator;
10263
10264   *cell_area = *background_area;
10265
10266   gtk_widget_style_get (GTK_WIDGET (tree_view),
10267                         "vertical-separator", &vertical_separator,
10268                         "horizontal-separator", &horizontal_separator,
10269                         NULL);
10270   cell_area->x += horizontal_separator / 2;
10271   cell_area->y += vertical_separator / 2;
10272   cell_area->width -= horizontal_separator;
10273   cell_area->height -= vertical_separator;
10274
10275   if (subtract_focus_rect)
10276     {
10277       int focus_line_width;
10278
10279       gtk_widget_style_get (GTK_WIDGET (tree_view),
10280                             "focus-line-width", &focus_line_width,
10281                             NULL);
10282       cell_area->x += focus_line_width;
10283       cell_area->y += focus_line_width;
10284       cell_area->width -= 2 * focus_line_width;
10285       cell_area->height -= 2 * focus_line_width;
10286     }
10287
10288   if (tree_view->priv->grid_lines != PSPP_SHEET_VIEW_GRID_LINES_NONE)
10289     {
10290       gint grid_line_width;
10291       gtk_widget_style_get (GTK_WIDGET (tree_view),
10292                             "grid-line-width", &grid_line_width,
10293                             NULL);
10294
10295       if ((tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_VERTICAL
10296            || tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_BOTH)
10297           && column != NULL)
10298         {
10299           PsppSheetViewColumn *first_column, *last_column;
10300           GList *list;
10301
10302           /* Find the last visible column. */
10303           last_column = NULL;
10304           for (list = g_list_last (tree_view->priv->columns);
10305                list;
10306                list = list->prev)
10307             {
10308               PsppSheetViewColumn *c = list->data;
10309               if (c->visible)
10310                 {
10311                   last_column = c;
10312                   break;
10313                 }
10314             }
10315
10316           /* Find the first visible column. */
10317           first_column = NULL;
10318           for (list = g_list_first (tree_view->priv->columns);
10319                list;
10320                list = list->next)
10321             {
10322               PsppSheetViewColumn *c = list->data;
10323               if (c->visible)
10324                 {
10325                   first_column = c;
10326                   break;
10327                 }
10328             }
10329
10330           if (column == first_column)
10331             {
10332               cell_area->width -= grid_line_width / 2;
10333             }
10334           else if (column == last_column)
10335             {
10336               cell_area->x += grid_line_width / 2;
10337               cell_area->width -= grid_line_width / 2;
10338             }
10339           else
10340             {
10341               cell_area->x += grid_line_width / 2;
10342               cell_area->width -= grid_line_width;
10343             }
10344         }
10345
10346       if (tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_HORIZONTAL
10347           || tree_view->priv->grid_lines == PSPP_SHEET_VIEW_GRID_LINES_BOTH)
10348         {
10349           cell_area->y += grid_line_width / 2;
10350           cell_area->height -= grid_line_width;
10351         }
10352     }
10353
10354   if (column == NULL)
10355     {
10356       cell_area->x = 0;
10357       cell_area->width = 0;
10358     }
10359 }
10360
10361 /**
10362  * pspp_sheet_view_get_cell_area:
10363  * @tree_view: a #PsppSheetView
10364  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
10365  * @column: (allow-none): a #PsppSheetViewColumn for the column, or %NULL to get only vertical coordinates
10366  * @rect: rectangle to fill with cell rect
10367  *
10368  * Fills the bounding rectangle in bin_window coordinates for the cell at the
10369  * row specified by @path and the column specified by @column.  If @path is
10370  * %NULL, or points to a path not currently displayed, the @y and @height fields
10371  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
10372  * fields will be filled with 0.  The sum of all cell rects does not cover the
10373  * entire tree; there are extra pixels in between rows, for example. The
10374  * returned rectangle is equivalent to the @cell_area passed to
10375  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
10376  * realized.
10377  **/
10378 void
10379 pspp_sheet_view_get_cell_area (PsppSheetView        *tree_view,
10380                              GtkTreePath        *path,
10381                              PsppSheetViewColumn  *column,
10382                              GdkRectangle       *rect)
10383 {
10384   GdkRectangle background_area;
10385
10386   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10387   g_return_if_fail (column == NULL || PSPP_IS_SHEET_VIEW_COLUMN (column));
10388   g_return_if_fail (rect != NULL);
10389   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
10390   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
10391
10392   pspp_sheet_view_get_background_area (tree_view, path, column,
10393                                        &background_area);
10394   pspp_sheet_view_adjust_cell_area (tree_view, column, &background_area,
10395                                     FALSE, rect);
10396 }
10397
10398 /**
10399  * pspp_sheet_view_get_background_area:
10400  * @tree_view: a #PsppSheetView
10401  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
10402  * @column: (allow-none): a #PsppSheetViewColumn for the column, or %NULL to get only vertical coordiantes
10403  * @rect: rectangle to fill with cell background rect
10404  *
10405  * Fills the bounding rectangle in bin_window coordinates for the cell at the
10406  * row specified by @path and the column specified by @column.  If @path is
10407  * %NULL, or points to a node not found in the tree, the @y and @height fields of
10408  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
10409  * fields will be filled with 0.  The returned rectangle is equivalent to the
10410  * @background_area passed to gtk_cell_renderer_render().  These background
10411  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
10412  * returned by pspp_sheet_view_get_cell_area(), which returns only the cell
10413  * itself, excluding surrounding borders.
10414  *
10415  **/
10416 void
10417 pspp_sheet_view_get_background_area (PsppSheetView        *tree_view,
10418                                    GtkTreePath        *path,
10419                                    PsppSheetViewColumn  *column,
10420                                    GdkRectangle       *rect)
10421 {
10422   int node = -1;
10423
10424   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10425   g_return_if_fail (column == NULL || PSPP_IS_SHEET_VIEW_COLUMN (column));
10426   g_return_if_fail (rect != NULL);
10427
10428   rect->x = 0;
10429   rect->y = 0;
10430   rect->width = 0;
10431   rect->height = 0;
10432
10433   if (path)
10434     {
10435       /* Get vertical coords */
10436
10437       _pspp_sheet_view_find_node (tree_view, path, &node);
10438       if (node < 0)
10439         return;
10440
10441       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, node);
10442
10443       rect->height = ROW_HEIGHT (tree_view);
10444     }
10445
10446   if (column)
10447     {
10448       gint x2 = 0;
10449
10450       pspp_sheet_view_get_background_xrange (tree_view, column, &rect->x, &x2);
10451       rect->width = x2 - rect->x;
10452     }
10453 }
10454
10455 /**
10456  * pspp_sheet_view_get_visible_rect:
10457  * @tree_view: a #PsppSheetView
10458  * @visible_rect: rectangle to fill
10459  *
10460  * Fills @visible_rect with the currently-visible region of the
10461  * buffer, in tree coordinates. Convert to bin_window coordinates with
10462  * pspp_sheet_view_convert_tree_to_bin_window_coords().
10463  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
10464  * scrollable area of the tree.
10465  **/
10466 void
10467 pspp_sheet_view_get_visible_rect (PsppSheetView  *tree_view,
10468                                 GdkRectangle *visible_rect)
10469 {
10470   GtkWidget *widget;
10471
10472   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10473
10474   widget = GTK_WIDGET (tree_view);
10475
10476   if (visible_rect)
10477     {
10478       visible_rect->x = tree_view->priv->hadjustment->value;
10479       visible_rect->y = tree_view->priv->vadjustment->value;
10480       visible_rect->width = widget->allocation.width;
10481       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
10482     }
10483 }
10484
10485 /**
10486  * pspp_sheet_view_widget_to_tree_coords:
10487  * @tree_view: a #PsppSheetView
10488  * @wx: X coordinate relative to bin_window
10489  * @wy: Y coordinate relative to bin_window
10490  * @tx: return location for tree X coordinate
10491  * @ty: return location for tree Y coordinate
10492  *
10493  * Converts bin_window coordinates to coordinates for the
10494  * tree (the full scrollable area of the tree).
10495  *
10496  * Deprecated: 2.12: Due to historial reasons the name of this function is
10497  * incorrect.  For converting coordinates relative to the widget to
10498  * bin_window coordinates, please see
10499  * pspp_sheet_view_convert_widget_to_bin_window_coords().
10500  *
10501  **/
10502 void
10503 pspp_sheet_view_widget_to_tree_coords (PsppSheetView *tree_view,
10504                                       gint         wx,
10505                                       gint         wy,
10506                                       gint        *tx,
10507                                       gint        *ty)
10508 {
10509   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10510
10511   if (tx)
10512     *tx = wx + tree_view->priv->hadjustment->value;
10513   if (ty)
10514     *ty = wy + tree_view->priv->dy;
10515 }
10516
10517 /**
10518  * pspp_sheet_view_tree_to_widget_coords:
10519  * @tree_view: a #PsppSheetView
10520  * @tx: tree X coordinate
10521  * @ty: tree Y coordinate
10522  * @wx: return location for X coordinate relative to bin_window
10523  * @wy: return location for Y coordinate relative to bin_window
10524  *
10525  * Converts tree coordinates (coordinates in full scrollable area of the tree)
10526  * to bin_window coordinates.
10527  *
10528  * Deprecated: 2.12: Due to historial reasons the name of this function is
10529  * incorrect.  For converting bin_window coordinates to coordinates relative
10530  * to bin_window, please see
10531  * pspp_sheet_view_convert_bin_window_to_widget_coords().
10532  *
10533  **/
10534 void
10535 pspp_sheet_view_tree_to_widget_coords (PsppSheetView *tree_view,
10536                                      gint         tx,
10537                                      gint         ty,
10538                                      gint        *wx,
10539                                      gint        *wy)
10540 {
10541   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10542
10543   if (wx)
10544     *wx = tx - tree_view->priv->hadjustment->value;
10545   if (wy)
10546     *wy = ty - tree_view->priv->dy;
10547 }
10548
10549
10550 /**
10551  * pspp_sheet_view_convert_widget_to_tree_coords:
10552  * @tree_view: a #PsppSheetView
10553  * @wx: X coordinate relative to the widget
10554  * @wy: Y coordinate relative to the widget
10555  * @tx: return location for tree X coordinate
10556  * @ty: return location for tree Y coordinate
10557  *
10558  * Converts widget coordinates to coordinates for the
10559  * tree (the full scrollable area of the tree).
10560  *
10561  * Since: 2.12
10562  **/
10563 void
10564 pspp_sheet_view_convert_widget_to_tree_coords (PsppSheetView *tree_view,
10565                                              gint         wx,
10566                                              gint         wy,
10567                                              gint        *tx,
10568                                              gint        *ty)
10569 {
10570   gint x, y;
10571
10572   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10573
10574   pspp_sheet_view_convert_widget_to_bin_window_coords (tree_view,
10575                                                      wx, wy,
10576                                                      &x, &y);
10577   pspp_sheet_view_convert_bin_window_to_tree_coords (tree_view,
10578                                                    x, y,
10579                                                    tx, ty);
10580 }
10581
10582 /**
10583  * pspp_sheet_view_convert_tree_to_widget_coords:
10584  * @tree_view: a #PsppSheetView
10585  * @tx: X coordinate relative to the tree
10586  * @ty: Y coordinate relative to the tree
10587  * @wx: return location for widget X coordinate
10588  * @wy: return location for widget Y coordinate
10589  *
10590  * Converts tree coordinates (coordinates in full scrollable area of the tree)
10591  * to widget coordinates.
10592  *
10593  * Since: 2.12
10594  **/
10595 void
10596 pspp_sheet_view_convert_tree_to_widget_coords (PsppSheetView *tree_view,
10597                                              gint         tx,
10598                                              gint         ty,
10599                                              gint        *wx,
10600                                              gint        *wy)
10601 {
10602   gint x, y;
10603
10604   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10605
10606   pspp_sheet_view_convert_tree_to_bin_window_coords (tree_view,
10607                                                    tx, ty,
10608                                                    &x, &y);
10609   pspp_sheet_view_convert_bin_window_to_widget_coords (tree_view,
10610                                                      x, y,
10611                                                      wx, wy);
10612 }
10613
10614 /**
10615  * pspp_sheet_view_convert_widget_to_bin_window_coords:
10616  * @tree_view: a #PsppSheetView
10617  * @wx: X coordinate relative to the widget
10618  * @wy: Y coordinate relative to the widget
10619  * @bx: return location for bin_window X coordinate
10620  * @by: return location for bin_window Y coordinate
10621  *
10622  * Converts widget coordinates to coordinates for the bin_window
10623  * (see pspp_sheet_view_get_bin_window()).
10624  *
10625  * Since: 2.12
10626  **/
10627 void
10628 pspp_sheet_view_convert_widget_to_bin_window_coords (PsppSheetView *tree_view,
10629                                                    gint         wx,
10630                                                    gint         wy,
10631                                                    gint        *bx,
10632                                                    gint        *by)
10633 {
10634   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10635
10636   if (bx)
10637     *bx = wx + tree_view->priv->hadjustment->value;
10638   if (by)
10639     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
10640 }
10641
10642 /**
10643  * pspp_sheet_view_convert_bin_window_to_widget_coords:
10644  * @tree_view: a #PsppSheetView
10645  * @bx: bin_window X coordinate
10646  * @by: bin_window Y coordinate
10647  * @wx: return location for widget X coordinate
10648  * @wy: return location for widget Y coordinate
10649  *
10650  * Converts bin_window coordinates (see pspp_sheet_view_get_bin_window())
10651  * to widget relative coordinates.
10652  *
10653  * Since: 2.12
10654  **/
10655 void
10656 pspp_sheet_view_convert_bin_window_to_widget_coords (PsppSheetView *tree_view,
10657                                                    gint         bx,
10658                                                    gint         by,
10659                                                    gint        *wx,
10660                                                    gint        *wy)
10661 {
10662   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10663
10664   if (wx)
10665     *wx = bx - tree_view->priv->hadjustment->value;
10666   if (wy)
10667     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
10668 }
10669
10670 /**
10671  * pspp_sheet_view_convert_tree_to_bin_window_coords:
10672  * @tree_view: a #PsppSheetView
10673  * @tx: tree X coordinate
10674  * @ty: tree Y coordinate
10675  * @bx: return location for X coordinate relative to bin_window
10676  * @by: return location for Y coordinate relative to bin_window
10677  *
10678  * Converts tree coordinates (coordinates in full scrollable area of the tree)
10679  * to bin_window coordinates.
10680  *
10681  * Since: 2.12
10682  **/
10683 void
10684 pspp_sheet_view_convert_tree_to_bin_window_coords (PsppSheetView *tree_view,
10685                                                  gint         tx,
10686                                                  gint         ty,
10687                                                  gint        *bx,
10688                                                  gint        *by)
10689 {
10690   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10691
10692   if (bx)
10693     *bx = tx;
10694   if (by)
10695     *by = ty - tree_view->priv->dy;
10696 }
10697
10698 /**
10699  * pspp_sheet_view_convert_bin_window_to_tree_coords:
10700  * @tree_view: a #PsppSheetView
10701  * @bx: X coordinate relative to bin_window
10702  * @by: Y coordinate relative to bin_window
10703  * @tx: return location for tree X coordinate
10704  * @ty: return location for tree Y coordinate
10705  *
10706  * Converts bin_window coordinates to coordinates for the
10707  * tree (the full scrollable area of the tree).
10708  *
10709  * Since: 2.12
10710  **/
10711 void
10712 pspp_sheet_view_convert_bin_window_to_tree_coords (PsppSheetView *tree_view,
10713                                                  gint         bx,
10714                                                  gint         by,
10715                                                  gint        *tx,
10716                                                  gint        *ty)
10717 {
10718   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10719
10720   if (tx)
10721     *tx = bx;
10722   if (ty)
10723     *ty = by + tree_view->priv->dy;
10724 }
10725
10726
10727
10728 /**
10729  * pspp_sheet_view_get_visible_range:
10730  * @tree_view: A #PsppSheetView
10731  * @start_path: (allow-none): Return location for start of region, or %NULL.
10732  * @end_path: (allow-none): Return location for end of region, or %NULL.
10733  *
10734  * Sets @start_path and @end_path to be the first and last visible path.
10735  * Note that there may be invisible paths in between.
10736  *
10737  * The paths should be freed with gtk_tree_path_free() after use.
10738  *
10739  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
10740  *
10741  * Since: 2.8
10742  **/
10743 gboolean
10744 pspp_sheet_view_get_visible_range (PsppSheetView  *tree_view,
10745                                  GtkTreePath **start_path,
10746                                  GtkTreePath **end_path)
10747 {
10748   int node;
10749   gboolean retval;
10750
10751   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
10752
10753   if (!tree_view->priv->row_count)
10754     return FALSE;
10755
10756   retval = TRUE;
10757
10758   if (start_path)
10759     {
10760       pspp_sheet_view_find_offset (tree_view,
10761                                    TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
10762                                    &node);
10763       if (node >= 0)
10764         *start_path = _pspp_sheet_view_find_path (tree_view, node);
10765       else
10766         retval = FALSE;
10767     }
10768
10769   if (end_path)
10770     {
10771       gint y;
10772
10773       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
10774         y = tree_view->priv->height - 1;
10775       else
10776         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
10777
10778       pspp_sheet_view_find_offset (tree_view, y, &node);
10779       if (node >= 0)
10780         *end_path = _pspp_sheet_view_find_path (tree_view, node);
10781       else
10782         retval = FALSE;
10783     }
10784
10785   return retval;
10786 }
10787
10788 static void
10789 unset_reorderable (PsppSheetView *tree_view)
10790 {
10791   if (tree_view->priv->reorderable)
10792     {
10793       tree_view->priv->reorderable = FALSE;
10794       g_object_notify (G_OBJECT (tree_view), "reorderable");
10795     }
10796 }
10797
10798 /**
10799  * pspp_sheet_view_enable_model_drag_source:
10800  * @tree_view: a #PsppSheetView
10801  * @start_button_mask: Mask of allowed buttons to start drag
10802  * @targets: the table of targets that the drag will support
10803  * @n_targets: the number of items in @targets
10804  * @actions: the bitmask of possible actions for a drag from this
10805  *    widget
10806  *
10807  * Turns @tree_view into a drag source for automatic DND. Calling this
10808  * method sets #PsppSheetView:reorderable to %FALSE.
10809  **/
10810 void
10811 pspp_sheet_view_enable_model_drag_source (PsppSheetView              *tree_view,
10812                                         GdkModifierType           start_button_mask,
10813                                         const GtkTargetEntry     *targets,
10814                                         gint                      n_targets,
10815                                         GdkDragAction             actions)
10816 {
10817   TreeViewDragInfo *di;
10818
10819   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10820
10821   gtk_drag_source_set (GTK_WIDGET (tree_view),
10822                        0,
10823                        targets,
10824                        n_targets,
10825                        actions);
10826
10827   di = ensure_info (tree_view);
10828
10829   di->start_button_mask = start_button_mask;
10830   di->source_actions = actions;
10831   di->source_set = TRUE;
10832
10833   unset_reorderable (tree_view);
10834 }
10835
10836 /**
10837  * pspp_sheet_view_enable_model_drag_dest:
10838  * @tree_view: a #PsppSheetView
10839  * @targets: the table of targets that the drag will support
10840  * @n_targets: the number of items in @targets
10841  * @actions: the bitmask of possible actions for a drag from this
10842  *    widget
10843  *
10844  * Turns @tree_view into a drop destination for automatic DND. Calling
10845  * this method sets #PsppSheetView:reorderable to %FALSE.
10846  **/
10847 void
10848 pspp_sheet_view_enable_model_drag_dest (PsppSheetView              *tree_view,
10849                                       const GtkTargetEntry     *targets,
10850                                       gint                      n_targets,
10851                                       GdkDragAction             actions)
10852 {
10853   TreeViewDragInfo *di;
10854
10855   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10856
10857   gtk_drag_dest_set (GTK_WIDGET (tree_view),
10858                      0,
10859                      targets,
10860                      n_targets,
10861                      actions);
10862
10863   di = ensure_info (tree_view);
10864   di->dest_set = TRUE;
10865
10866   unset_reorderable (tree_view);
10867 }
10868
10869 /**
10870  * pspp_sheet_view_unset_rows_drag_source:
10871  * @tree_view: a #PsppSheetView
10872  *
10873  * Undoes the effect of
10874  * pspp_sheet_view_enable_model_drag_source(). Calling this method sets
10875  * #PsppSheetView:reorderable to %FALSE.
10876  **/
10877 void
10878 pspp_sheet_view_unset_rows_drag_source (PsppSheetView *tree_view)
10879 {
10880   TreeViewDragInfo *di;
10881
10882   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10883
10884   di = get_info (tree_view);
10885
10886   if (di)
10887     {
10888       if (di->source_set)
10889         {
10890           gtk_drag_source_unset (GTK_WIDGET (tree_view));
10891           di->source_set = FALSE;
10892         }
10893
10894       if (!di->dest_set && !di->source_set)
10895         remove_info (tree_view);
10896     }
10897
10898   unset_reorderable (tree_view);
10899 }
10900
10901 /**
10902  * pspp_sheet_view_unset_rows_drag_dest:
10903  * @tree_view: a #PsppSheetView
10904  *
10905  * Undoes the effect of
10906  * pspp_sheet_view_enable_model_drag_dest(). Calling this method sets
10907  * #PsppSheetView:reorderable to %FALSE.
10908  **/
10909 void
10910 pspp_sheet_view_unset_rows_drag_dest (PsppSheetView *tree_view)
10911 {
10912   TreeViewDragInfo *di;
10913
10914   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10915
10916   di = get_info (tree_view);
10917
10918   if (di)
10919     {
10920       if (di->dest_set)
10921         {
10922           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
10923           di->dest_set = FALSE;
10924         }
10925
10926       if (!di->dest_set && !di->source_set)
10927         remove_info (tree_view);
10928     }
10929
10930   unset_reorderable (tree_view);
10931 }
10932
10933 /**
10934  * pspp_sheet_view_set_drag_dest_row:
10935  * @tree_view: a #PsppSheetView
10936  * @path: (allow-none): The path of the row to highlight, or %NULL.
10937  * @pos: Specifies whether to drop before, after or into the row
10938  *
10939  * Sets the row that is highlighted for feedback.
10940  **/
10941 void
10942 pspp_sheet_view_set_drag_dest_row (PsppSheetView            *tree_view,
10943                                  GtkTreePath            *path,
10944                                  PsppSheetViewDropPosition pos)
10945 {
10946   GtkTreePath *current_dest;
10947
10948   /* Note; this function is exported to allow a custom DND
10949    * implementation, so it can't touch TreeViewDragInfo
10950    */
10951
10952   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
10953
10954   current_dest = NULL;
10955
10956   if (tree_view->priv->drag_dest_row)
10957     {
10958       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
10959       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10960     }
10961
10962   /* special case a drop on an empty model */
10963   tree_view->priv->empty_view_drop = 0;
10964
10965   if (pos == PSPP_SHEET_VIEW_DROP_BEFORE && path
10966       && gtk_tree_path_get_depth (path) == 1
10967       && gtk_tree_path_get_indices (path)[0] == 0)
10968     {
10969       gint n_children;
10970
10971       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
10972                                                    NULL);
10973
10974       if (!n_children)
10975         tree_view->priv->empty_view_drop = 1;
10976     }
10977
10978   tree_view->priv->drag_dest_pos = pos;
10979
10980   if (path)
10981     {
10982       tree_view->priv->drag_dest_row =
10983         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
10984       pspp_sheet_view_queue_draw_path (tree_view, path, NULL);
10985     }
10986   else
10987     tree_view->priv->drag_dest_row = NULL;
10988
10989   if (current_dest)
10990     {
10991       int node, new_node;
10992
10993       _pspp_sheet_view_find_node (tree_view, current_dest, &node);
10994       _pspp_sheet_view_queue_draw_node (tree_view, node, NULL);
10995
10996       if (node >= 0)
10997         {
10998           new_node = pspp_sheet_view_node_next (tree_view, node);
10999           if (new_node >= 0)
11000             _pspp_sheet_view_queue_draw_node (tree_view, new_node, NULL);
11001
11002           new_node = pspp_sheet_view_node_prev (tree_view, node);
11003           if (new_node >= 0)
11004             _pspp_sheet_view_queue_draw_node (tree_view, new_node, NULL);
11005         }
11006       gtk_tree_path_free (current_dest);
11007     }
11008 }
11009
11010 /**
11011  * pspp_sheet_view_get_drag_dest_row:
11012  * @tree_view: a #PsppSheetView
11013  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
11014  * @pos: (allow-none): Return location for the drop position, or %NULL
11015  *
11016  * Gets information about the row that is highlighted for feedback.
11017  **/
11018 void
11019 pspp_sheet_view_get_drag_dest_row (PsppSheetView              *tree_view,
11020                                  GtkTreePath             **path,
11021                                  PsppSheetViewDropPosition  *pos)
11022 {
11023   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11024
11025   if (path)
11026     {
11027       if (tree_view->priv->drag_dest_row)
11028         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
11029       else
11030         {
11031           if (tree_view->priv->empty_view_drop)
11032             *path = gtk_tree_path_new_from_indices (0, -1);
11033           else
11034             *path = NULL;
11035         }
11036     }
11037
11038   if (pos)
11039     *pos = tree_view->priv->drag_dest_pos;
11040 }
11041
11042 /**
11043  * pspp_sheet_view_get_dest_row_at_pos:
11044  * @tree_view: a #PsppSheetView
11045  * @drag_x: the position to determine the destination row for
11046  * @drag_y: the position to determine the destination row for
11047  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
11048  * @pos: (allow-none): Return location for the drop position, or %NULL
11049  *
11050  * Determines the destination row for a given position.  @drag_x and
11051  * @drag_y are expected to be in widget coordinates.  This function is only
11052  * meaningful if @tree_view is realized.  Therefore this function will always
11053  * return %FALSE if @tree_view is not realized or does not have a model.
11054  *
11055  * Return value: whether there is a row at the given position, %TRUE if this
11056  * is indeed the case.
11057  **/
11058 gboolean
11059 pspp_sheet_view_get_dest_row_at_pos (PsppSheetView             *tree_view,
11060                                    gint                     drag_x,
11061                                    gint                     drag_y,
11062                                    GtkTreePath            **path,
11063                                    PsppSheetViewDropPosition *pos)
11064 {
11065   gint cell_y;
11066   gint bin_x, bin_y;
11067   gdouble offset_into_row;
11068   gdouble third;
11069   GdkRectangle cell;
11070   PsppSheetViewColumn *column = NULL;
11071   GtkTreePath *tmp_path = NULL;
11072
11073   /* Note; this function is exported to allow a custom DND
11074    * implementation, so it can't touch TreeViewDragInfo
11075    */
11076
11077   g_return_val_if_fail (tree_view != NULL, FALSE);
11078   g_return_val_if_fail (drag_x >= 0, FALSE);
11079   g_return_val_if_fail (drag_y >= 0, FALSE);
11080
11081   if (path)
11082     *path = NULL;
11083
11084   if (tree_view->priv->bin_window == NULL)
11085     return FALSE;
11086
11087   if (tree_view->priv->row_count == 0)
11088     return FALSE;
11089
11090   /* If in the top third of a row, we drop before that row; if
11091    * in the bottom third, drop after that row; if in the middle,
11092    * and the row has children, drop into the row.
11093    */
11094   pspp_sheet_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
11095                                                      &bin_x, &bin_y);
11096
11097   if (!pspp_sheet_view_get_path_at_pos (tree_view,
11098                                       bin_x,
11099                                       bin_y,
11100                                       &tmp_path,
11101                                       &column,
11102                                       NULL,
11103                                       &cell_y))
11104     return FALSE;
11105
11106   pspp_sheet_view_get_background_area (tree_view, tmp_path, column,
11107                                      &cell);
11108
11109   offset_into_row = cell_y;
11110
11111   if (path)
11112     *path = tmp_path;
11113   else
11114     gtk_tree_path_free (tmp_path);
11115
11116   tmp_path = NULL;
11117
11118   third = cell.height / 3.0;
11119
11120   if (pos)
11121     {
11122       if (offset_into_row < third)
11123         {
11124           *pos = PSPP_SHEET_VIEW_DROP_BEFORE;
11125         }
11126       else if (offset_into_row < (cell.height / 2.0))
11127         {
11128           *pos = PSPP_SHEET_VIEW_DROP_INTO_OR_BEFORE;
11129         }
11130       else if (offset_into_row < third * 2.0)
11131         {
11132           *pos = PSPP_SHEET_VIEW_DROP_INTO_OR_AFTER;
11133         }
11134       else
11135         {
11136           *pos = PSPP_SHEET_VIEW_DROP_AFTER;
11137         }
11138     }
11139
11140   return TRUE;
11141 }
11142
11143
11144
11145 /* KEEP IN SYNC WITH PSPP_SHEET_VIEW_BIN_EXPOSE */
11146 /**
11147  * pspp_sheet_view_create_row_drag_icon:
11148  * @tree_view: a #PsppSheetView
11149  * @path: a #GtkTreePath in @tree_view
11150  *
11151  * Creates a #GdkPixmap representation of the row at @path.
11152  * This image is used for a drag icon.
11153  *
11154  * Return value: a newly-allocated pixmap of the drag icon.
11155  **/
11156 GdkPixmap *
11157 pspp_sheet_view_create_row_drag_icon (PsppSheetView  *tree_view,
11158                                     GtkTreePath  *path)
11159 {
11160   GtkTreeIter   iter;
11161   int node;
11162   gint cell_offset;
11163   GList *list;
11164   GdkRectangle background_area;
11165   GdkRectangle expose_area;
11166   GtkWidget *widget;
11167   /* start drawing inside the black outline */
11168   gint x = 1, y = 1;
11169   GdkDrawable *drawable;
11170   gint bin_window_width;
11171   gboolean rtl;
11172
11173   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
11174   g_return_val_if_fail (path != NULL, NULL);
11175
11176   widget = GTK_WIDGET (tree_view);
11177
11178   if (!gtk_widget_get_realized (widget))
11179     return NULL;
11180
11181   _pspp_sheet_view_find_node (tree_view,
11182                             path,
11183                             &node);
11184
11185   if (node < 0)
11186     return NULL;
11187
11188   if (!gtk_tree_model_get_iter (tree_view->priv->model,
11189                                 &iter,
11190                                 path))
11191     return NULL;
11192
11193   cell_offset = x;
11194
11195   background_area.y = y;
11196   background_area.height = ROW_HEIGHT (tree_view);
11197
11198   gdk_drawable_get_size (tree_view->priv->bin_window,
11199                          &bin_window_width, NULL);
11200
11201   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
11202                              bin_window_width + 2,
11203                              background_area.height + 2,
11204                              -1);
11205
11206   expose_area.x = 0;
11207   expose_area.y = 0;
11208   expose_area.width = bin_window_width + 2;
11209   expose_area.height = background_area.height + 2;
11210
11211   gdk_draw_rectangle (drawable,
11212                       widget->style->base_gc [gtk_widget_get_state (widget)],
11213                       TRUE,
11214                       0, 0,
11215                       bin_window_width + 2,
11216                       background_area.height + 2);
11217
11218   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
11219
11220   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
11221       list;
11222       list = (rtl ? list->prev : list->next))
11223     {
11224       PsppSheetViewColumn *column = list->data;
11225       GdkRectangle cell_area;
11226       gint vertical_separator;
11227
11228       if (!column->visible)
11229         continue;
11230
11231       pspp_sheet_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter);
11232
11233       background_area.x = cell_offset;
11234       background_area.width = column->width;
11235
11236       gtk_widget_style_get (widget,
11237                             "vertical-separator", &vertical_separator,
11238                             NULL);
11239
11240       cell_area = background_area;
11241
11242       cell_area.y += vertical_separator / 2;
11243       cell_area.height -= vertical_separator;
11244
11245       if (pspp_sheet_view_column_cell_is_visible (column))
11246         _pspp_sheet_view_column_cell_render (column,
11247                                              drawable,
11248                                              &background_area,
11249                                              &cell_area,
11250                                              &expose_area,
11251                                              0);
11252       cell_offset += column->width;
11253     }
11254
11255   gdk_draw_rectangle (drawable,
11256                       widget->style->black_gc,
11257                       FALSE,
11258                       0, 0,
11259                       bin_window_width + 1,
11260                       background_area.height + 1);
11261
11262   return drawable;
11263 }
11264
11265
11266 /**
11267  * pspp_sheet_view_set_destroy_count_func:
11268  * @tree_view: A #PsppSheetView
11269  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
11270  * @data: (allow-none): User data to be passed to @func, or %NULL
11271  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
11272  *
11273  * This function should almost never be used.  It is meant for private use by
11274  * ATK for determining the number of visible children that are removed when a row is deleted.
11275  **/
11276 void
11277 pspp_sheet_view_set_destroy_count_func (PsppSheetView             *tree_view,
11278                                       PsppSheetDestroyCountFunc  func,
11279                                       gpointer                 data,
11280                                       GDestroyNotify           destroy)
11281 {
11282   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11283
11284   if (tree_view->priv->destroy_count_destroy)
11285     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
11286
11287   tree_view->priv->destroy_count_func = func;
11288   tree_view->priv->destroy_count_data = data;
11289   tree_view->priv->destroy_count_destroy = destroy;
11290 }
11291
11292
11293 /*
11294  * Interactive search
11295  */
11296
11297 /**
11298  * pspp_sheet_view_set_enable_search:
11299  * @tree_view: A #PsppSheetView
11300  * @enable_search: %TRUE, if the user can search interactively
11301  *
11302  * If @enable_search is set, then the user can type in text to search through
11303  * the tree interactively (this is sometimes called "typeahead find").
11304  *
11305  * Note that even if this is %FALSE, the user can still initiate a search
11306  * using the "start-interactive-search" key binding.
11307  */
11308 void
11309 pspp_sheet_view_set_enable_search (PsppSheetView *tree_view,
11310                                  gboolean     enable_search)
11311 {
11312   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11313
11314   enable_search = !!enable_search;
11315
11316   if (tree_view->priv->enable_search != enable_search)
11317     {
11318        tree_view->priv->enable_search = enable_search;
11319        g_object_notify (G_OBJECT (tree_view), "enable-search");
11320     }
11321 }
11322
11323 /**
11324  * pspp_sheet_view_get_enable_search:
11325  * @tree_view: A #PsppSheetView
11326  *
11327  * Returns whether or not the tree allows to start interactive searching
11328  * by typing in text.
11329  *
11330  * Return value: whether or not to let the user search interactively
11331  */
11332 gboolean
11333 pspp_sheet_view_get_enable_search (PsppSheetView *tree_view)
11334 {
11335   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
11336
11337   return tree_view->priv->enable_search;
11338 }
11339
11340
11341 /**
11342  * pspp_sheet_view_get_search_column:
11343  * @tree_view: A #PsppSheetView
11344  *
11345  * Gets the column searched on by the interactive search code.
11346  *
11347  * Return value: the column the interactive search code searches in.
11348  */
11349 gint
11350 pspp_sheet_view_get_search_column (PsppSheetView *tree_view)
11351 {
11352   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), -1);
11353
11354   return (tree_view->priv->search_column);
11355 }
11356
11357 /**
11358  * pspp_sheet_view_set_search_column:
11359  * @tree_view: A #PsppSheetView
11360  * @column: the column of the model to search in, or -1 to disable searching
11361  *
11362  * Sets @column as the column where the interactive search code should
11363  * search in for the current model.
11364  *
11365  * If the search column is set, users can use the "start-interactive-search"
11366  * key binding to bring up search popup. The enable-search property controls
11367  * whether simply typing text will also start an interactive search.
11368  *
11369  * Note that @column refers to a column of the current model. The search
11370  * column is reset to -1 when the model is changed.
11371  */
11372 void
11373 pspp_sheet_view_set_search_column (PsppSheetView *tree_view,
11374                                  gint         column)
11375 {
11376   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11377   g_return_if_fail (column >= -1);
11378
11379   if (tree_view->priv->search_column == column)
11380     return;
11381
11382   tree_view->priv->search_column = column;
11383   g_object_notify (G_OBJECT (tree_view), "search-column");
11384 }
11385
11386 /**
11387  * pspp_sheet_view_get_search_equal_func:
11388  * @tree_view: A #PsppSheetView
11389  *
11390  * Returns the compare function currently in use.
11391  *
11392  * Return value: the currently used compare function for the search code.
11393  */
11394
11395 PsppSheetViewSearchEqualFunc
11396 pspp_sheet_view_get_search_equal_func (PsppSheetView *tree_view)
11397 {
11398   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
11399
11400   return tree_view->priv->search_equal_func;
11401 }
11402
11403 /**
11404  * pspp_sheet_view_set_search_equal_func:
11405  * @tree_view: A #PsppSheetView
11406  * @search_equal_func: the compare function to use during the search
11407  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
11408  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
11409  *
11410  * Sets the compare function for the interactive search capabilities; note
11411  * that somewhat like strcmp() returning 0 for equality
11412  * #PsppSheetViewSearchEqualFunc returns %FALSE on matches.
11413  **/
11414 void
11415 pspp_sheet_view_set_search_equal_func (PsppSheetView                *tree_view,
11416                                      PsppSheetViewSearchEqualFunc  search_equal_func,
11417                                      gpointer                    search_user_data,
11418                                      GDestroyNotify              search_destroy)
11419 {
11420   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11421   g_return_if_fail (search_equal_func != NULL);
11422
11423   if (tree_view->priv->search_destroy)
11424     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
11425
11426   tree_view->priv->search_equal_func = search_equal_func;
11427   tree_view->priv->search_user_data = search_user_data;
11428   tree_view->priv->search_destroy = search_destroy;
11429   if (tree_view->priv->search_equal_func == NULL)
11430     tree_view->priv->search_equal_func = pspp_sheet_view_search_equal_func;
11431 }
11432
11433 /**
11434  * pspp_sheet_view_get_search_entry:
11435  * @tree_view: A #PsppSheetView
11436  *
11437  * Returns the #GtkEntry which is currently in use as interactive search
11438  * entry for @tree_view.  In case the built-in entry is being used, %NULL
11439  * will be returned.
11440  *
11441  * Return value: the entry currently in use as search entry.
11442  *
11443  * Since: 2.10
11444  */
11445 GtkEntry *
11446 pspp_sheet_view_get_search_entry (PsppSheetView *tree_view)
11447 {
11448   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
11449
11450   if (tree_view->priv->search_custom_entry_set)
11451     return GTK_ENTRY (tree_view->priv->search_entry);
11452
11453   return NULL;
11454 }
11455
11456 /**
11457  * pspp_sheet_view_set_search_entry:
11458  * @tree_view: A #PsppSheetView
11459  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
11460  *
11461  * Sets the entry which the interactive search code will use for this
11462  * @tree_view.  This is useful when you want to provide a search entry
11463  * in our interface at all time at a fixed position.  Passing %NULL for
11464  * @entry will make the interactive search code use the built-in popup
11465  * entry again.
11466  *
11467  * Since: 2.10
11468  */
11469 void
11470 pspp_sheet_view_set_search_entry (PsppSheetView *tree_view,
11471                                 GtkEntry    *entry)
11472 {
11473   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11474   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
11475
11476   if (tree_view->priv->search_custom_entry_set)
11477     {
11478       if (tree_view->priv->search_entry_changed_id)
11479         {
11480           g_signal_handler_disconnect (tree_view->priv->search_entry,
11481                                        tree_view->priv->search_entry_changed_id);
11482           tree_view->priv->search_entry_changed_id = 0;
11483         }
11484       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
11485                                             G_CALLBACK (pspp_sheet_view_search_key_press_event),
11486                                             tree_view);
11487
11488       g_object_unref (tree_view->priv->search_entry);
11489     }
11490   else if (tree_view->priv->search_window)
11491     {
11492       gtk_widget_destroy (tree_view->priv->search_window);
11493
11494       tree_view->priv->search_window = NULL;
11495     }
11496
11497   if (entry)
11498     {
11499       tree_view->priv->search_entry = g_object_ref (entry);
11500       tree_view->priv->search_custom_entry_set = TRUE;
11501
11502       if (tree_view->priv->search_entry_changed_id == 0)
11503         {
11504           tree_view->priv->search_entry_changed_id =
11505             g_signal_connect (tree_view->priv->search_entry, "changed",
11506                               G_CALLBACK (pspp_sheet_view_search_init),
11507                               tree_view);
11508         }
11509
11510         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
11511                           G_CALLBACK (pspp_sheet_view_search_key_press_event),
11512                           tree_view);
11513
11514         pspp_sheet_view_search_init (tree_view->priv->search_entry, tree_view);
11515     }
11516   else
11517     {
11518       tree_view->priv->search_entry = NULL;
11519       tree_view->priv->search_custom_entry_set = FALSE;
11520     }
11521 }
11522
11523 /**
11524  * pspp_sheet_view_set_search_position_func:
11525  * @tree_view: A #PsppSheetView
11526  * @func: (allow-none): the function to use to position the search dialog, or %NULL
11527  *    to use the default search position function
11528  * @data: (allow-none): user data to pass to @func, or %NULL
11529  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
11530  *
11531  * Sets the function to use when positioning the search dialog.
11532  *
11533  * Since: 2.10
11534  **/
11535 void
11536 pspp_sheet_view_set_search_position_func (PsppSheetView                   *tree_view,
11537                                         PsppSheetViewSearchPositionFunc  func,
11538                                         gpointer                       user_data,
11539                                         GDestroyNotify                 destroy)
11540 {
11541   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
11542
11543   if (tree_view->priv->search_position_destroy)
11544     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
11545
11546   tree_view->priv->search_position_func = func;
11547   tree_view->priv->search_position_user_data = user_data;
11548   tree_view->priv->search_position_destroy = destroy;
11549   if (tree_view->priv->search_position_func == NULL)
11550     tree_view->priv->search_position_func = pspp_sheet_view_search_position_func;
11551 }
11552
11553 /**
11554  * pspp_sheet_view_get_search_position_func:
11555  * @tree_view: A #PsppSheetView
11556  *
11557  * Returns the positioning function currently in use.
11558  *
11559  * Return value: the currently used function for positioning the search dialog.
11560  *
11561  * Since: 2.10
11562  */
11563 PsppSheetViewSearchPositionFunc
11564 pspp_sheet_view_get_search_position_func (PsppSheetView *tree_view)
11565 {
11566   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), NULL);
11567
11568   return tree_view->priv->search_position_func;
11569 }
11570
11571
11572 static void
11573 pspp_sheet_view_search_dialog_hide (GtkWidget   *search_dialog,
11574                                   PsppSheetView *tree_view)
11575 {
11576   if (tree_view->priv->disable_popdown)
11577     return;
11578
11579   if (tree_view->priv->search_entry_changed_id)
11580     {
11581       g_signal_handler_disconnect (tree_view->priv->search_entry,
11582                                    tree_view->priv->search_entry_changed_id);
11583       tree_view->priv->search_entry_changed_id = 0;
11584     }
11585   if (tree_view->priv->typeselect_flush_timeout)
11586     {
11587       g_source_remove (tree_view->priv->typeselect_flush_timeout);
11588       tree_view->priv->typeselect_flush_timeout = 0;
11589     }
11590
11591   if (gtk_widget_get_visible (search_dialog))
11592     {
11593       /* send focus-in event */
11594       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), FALSE);
11595       gtk_widget_hide (search_dialog);
11596       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11597       send_focus_change (GTK_WIDGET (tree_view), TRUE);
11598     }
11599 }
11600
11601 static void
11602 pspp_sheet_view_search_position_func (PsppSheetView *tree_view,
11603                                     GtkWidget   *search_dialog,
11604                                     gpointer     user_data)
11605 {
11606   gint x, y;
11607   gint tree_x, tree_y;
11608   gint tree_width, tree_height;
11609   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
11610   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
11611   GtkRequisition requisition;
11612   gint monitor_num;
11613   GdkRectangle monitor;
11614
11615   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
11616   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
11617
11618   gtk_widget_realize (search_dialog);
11619
11620   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
11621   gdk_drawable_get_size (tree_window,
11622                          &tree_width,
11623                          &tree_height);
11624   gtk_widget_size_request (search_dialog, &requisition);
11625
11626   if (tree_x + tree_width > gdk_screen_get_width (screen))
11627     x = gdk_screen_get_width (screen) - requisition.width;
11628   else if (tree_x + tree_width - requisition.width < 0)
11629     x = 0;
11630   else
11631     x = tree_x + tree_width - requisition.width;
11632
11633   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
11634     y = gdk_screen_get_height (screen) - requisition.height;
11635   else if (tree_y + tree_height < 0) /* isn't really possible ... */
11636     y = 0;
11637   else
11638     y = tree_y + tree_height;
11639
11640   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
11641 }
11642
11643 static void
11644 pspp_sheet_view_search_disable_popdown (GtkEntry *entry,
11645                                       GtkMenu  *menu,
11646                                       gpointer  data)
11647 {
11648   PsppSheetView *tree_view = (PsppSheetView *)data;
11649
11650   tree_view->priv->disable_popdown = 1;
11651   g_signal_connect (menu, "hide",
11652                     G_CALLBACK (pspp_sheet_view_search_enable_popdown), data);
11653 }
11654
11655 /* Because we're visible but offscreen, we just set a flag in the preedit
11656  * callback.
11657  */
11658 static void
11659 pspp_sheet_view_search_preedit_changed (GtkIMContext *im_context,
11660                                       PsppSheetView  *tree_view)
11661 {
11662   tree_view->priv->imcontext_changed = 1;
11663   if (tree_view->priv->typeselect_flush_timeout)
11664     {
11665       g_source_remove (tree_view->priv->typeselect_flush_timeout);
11666       tree_view->priv->typeselect_flush_timeout =
11667         gdk_threads_add_timeout (PSPP_SHEET_VIEW_SEARCH_DIALOG_TIMEOUT,
11668                        (GSourceFunc) pspp_sheet_view_search_entry_flush_timeout,
11669                        tree_view);
11670     }
11671
11672 }
11673
11674 static void
11675 pspp_sheet_view_search_activate (GtkEntry    *entry,
11676                                PsppSheetView *tree_view)
11677 {
11678   GtkTreePath *path;
11679   int node;
11680
11681   pspp_sheet_view_search_dialog_hide (tree_view->priv->search_window,
11682                                     tree_view);
11683
11684   /* If we have a row selected and it's the cursor row, we activate
11685    * the row XXX */
11686   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
11687     {
11688       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
11689
11690       _pspp_sheet_view_find_node (tree_view, path, &node);
11691
11692       if (node >= 0 && pspp_sheet_view_node_is_selected (tree_view, node))
11693         pspp_sheet_view_row_activated (tree_view, path, tree_view->priv->focus_column);
11694
11695       gtk_tree_path_free (path);
11696     }
11697 }
11698
11699 static gboolean
11700 pspp_sheet_view_real_search_enable_popdown (gpointer data)
11701 {
11702   PsppSheetView *tree_view = (PsppSheetView *)data;
11703
11704   tree_view->priv->disable_popdown = 0;
11705
11706   return FALSE;
11707 }
11708
11709 static void
11710 pspp_sheet_view_search_enable_popdown (GtkWidget *widget,
11711                                      gpointer   data)
11712 {
11713   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, pspp_sheet_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
11714 }
11715
11716 static gboolean
11717 pspp_sheet_view_search_delete_event (GtkWidget *widget,
11718                                    GdkEventAny *event,
11719                                    PsppSheetView *tree_view)
11720 {
11721   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
11722
11723   pspp_sheet_view_search_dialog_hide (widget, tree_view);
11724
11725   return TRUE;
11726 }
11727
11728 static gboolean
11729 pspp_sheet_view_search_button_press_event (GtkWidget *widget,
11730                                          GdkEventButton *event,
11731                                          PsppSheetView *tree_view)
11732 {
11733   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
11734
11735   pspp_sheet_view_search_dialog_hide (widget, tree_view);
11736
11737   if (event->window == tree_view->priv->bin_window)
11738     pspp_sheet_view_button_press (GTK_WIDGET (tree_view), event);
11739
11740   return TRUE;
11741 }
11742
11743 static gboolean
11744 pspp_sheet_view_search_scroll_event (GtkWidget *widget,
11745                                    GdkEventScroll *event,
11746                                    PsppSheetView *tree_view)
11747 {
11748   gboolean retval = FALSE;
11749
11750   if (event->direction == GDK_SCROLL_UP)
11751     {
11752       pspp_sheet_view_search_move (widget, tree_view, TRUE);
11753       retval = TRUE;
11754     }
11755   else if (event->direction == GDK_SCROLL_DOWN)
11756     {
11757       pspp_sheet_view_search_move (widget, tree_view, FALSE);
11758       retval = TRUE;
11759     }
11760
11761   /* renew the flush timeout */
11762   if (retval && tree_view->priv->typeselect_flush_timeout
11763       && !tree_view->priv->search_custom_entry_set)
11764     {
11765       g_source_remove (tree_view->priv->typeselect_flush_timeout);
11766       tree_view->priv->typeselect_flush_timeout =
11767         gdk_threads_add_timeout (PSPP_SHEET_VIEW_SEARCH_DIALOG_TIMEOUT,
11768                        (GSourceFunc) pspp_sheet_view_search_entry_flush_timeout,
11769                        tree_view);
11770     }
11771
11772   return retval;
11773 }
11774
11775 static gboolean
11776 pspp_sheet_view_search_key_press_event (GtkWidget *widget,
11777                                       GdkEventKey *event,
11778                                       PsppSheetView *tree_view)
11779 {
11780   gboolean retval = FALSE;
11781
11782   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
11783   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
11784
11785   /* close window and cancel the search */
11786   if (!tree_view->priv->search_custom_entry_set
11787       && (event->keyval == GDK_Escape ||
11788           event->keyval == GDK_Tab ||
11789             event->keyval == GDK_KP_Tab ||
11790             event->keyval == GDK_ISO_Left_Tab))
11791     {
11792       pspp_sheet_view_search_dialog_hide (widget, tree_view);
11793       return TRUE;
11794     }
11795
11796   /* select previous matching iter */
11797   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
11798     {
11799       if (!pspp_sheet_view_search_move (widget, tree_view, TRUE))
11800         gtk_widget_error_bell (widget);
11801
11802       retval = TRUE;
11803     }
11804
11805   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
11806       && (event->keyval == GDK_g || event->keyval == GDK_G))
11807     {
11808       if (!pspp_sheet_view_search_move (widget, tree_view, TRUE))
11809         gtk_widget_error_bell (widget);
11810
11811       retval = TRUE;
11812     }
11813
11814   /* select next matching iter */
11815   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
11816     {
11817       if (!pspp_sheet_view_search_move (widget, tree_view, FALSE))
11818         gtk_widget_error_bell (widget);
11819
11820       retval = TRUE;
11821     }
11822
11823   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
11824       && (event->keyval == GDK_g || event->keyval == GDK_G))
11825     {
11826       if (!pspp_sheet_view_search_move (widget, tree_view, FALSE))
11827         gtk_widget_error_bell (widget);
11828
11829       retval = TRUE;
11830     }
11831
11832   /* renew the flush timeout */
11833   if (retval && tree_view->priv->typeselect_flush_timeout
11834       && !tree_view->priv->search_custom_entry_set)
11835     {
11836       g_source_remove (tree_view->priv->typeselect_flush_timeout);
11837       tree_view->priv->typeselect_flush_timeout =
11838         gdk_threads_add_timeout (PSPP_SHEET_VIEW_SEARCH_DIALOG_TIMEOUT,
11839                        (GSourceFunc) pspp_sheet_view_search_entry_flush_timeout,
11840                        tree_view);
11841     }
11842
11843   return retval;
11844 }
11845
11846 /*  this function returns FALSE if there is a search string but
11847  *  nothing was found, and TRUE otherwise.
11848  */
11849 static gboolean
11850 pspp_sheet_view_search_move (GtkWidget   *window,
11851                            PsppSheetView *tree_view,
11852                            gboolean     up)
11853 {
11854   gboolean ret;
11855   gint len;
11856   gint count = 0;
11857   const gchar *text;
11858   GtkTreeIter iter;
11859   GtkTreeModel *model;
11860   PsppSheetSelection *selection;
11861
11862   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
11863
11864   g_return_val_if_fail (text != NULL, FALSE);
11865
11866   len = strlen (text);
11867
11868   if (up && tree_view->priv->selected_iter == 1)
11869     return strlen (text) < 1;
11870
11871   len = strlen (text);
11872
11873   if (len < 1)
11874     return TRUE;
11875
11876   model = pspp_sheet_view_get_model (tree_view);
11877   selection = pspp_sheet_view_get_selection (tree_view);
11878
11879   /* search */
11880   pspp_sheet_selection_unselect_all (selection);
11881   if (!gtk_tree_model_get_iter_first (model, &iter))
11882     return TRUE;
11883
11884   ret = pspp_sheet_view_search_iter (model, selection, &iter, text,
11885                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
11886
11887   if (ret)
11888     {
11889       /* found */
11890       tree_view->priv->selected_iter += up?(-1):(1);
11891       return TRUE;
11892     }
11893   else
11894     {
11895       /* return to old iter */
11896       count = 0;
11897       gtk_tree_model_get_iter_first (model, &iter);
11898       pspp_sheet_view_search_iter (model, selection,
11899                                  &iter, text,
11900                                  &count, tree_view->priv->selected_iter);
11901       return FALSE;
11902     }
11903 }
11904
11905 static gboolean
11906 pspp_sheet_view_search_equal_func (GtkTreeModel *model,
11907                                  gint          column,
11908                                  const gchar  *key,
11909                                  GtkTreeIter  *iter,
11910                                  gpointer      search_data)
11911 {
11912   gboolean retval = TRUE;
11913   const gchar *str;
11914   gchar *normalized_string;
11915   gchar *normalized_key;
11916   gchar *case_normalized_string = NULL;
11917   gchar *case_normalized_key = NULL;
11918   GValue value = {0,};
11919   GValue transformed = {0,};
11920
11921   gtk_tree_model_get_value (model, iter, column, &value);
11922
11923   g_value_init (&transformed, G_TYPE_STRING);
11924
11925   if (!g_value_transform (&value, &transformed))
11926     {
11927       g_value_unset (&value);
11928       return TRUE;
11929     }
11930
11931   g_value_unset (&value);
11932
11933   str = g_value_get_string (&transformed);
11934   if (!str)
11935     {
11936       g_value_unset (&transformed);
11937       return TRUE;
11938     }
11939
11940   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
11941   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
11942
11943   if (normalized_string && normalized_key)
11944     {
11945       case_normalized_string = g_utf8_casefold (normalized_string, -1);
11946       case_normalized_key = g_utf8_casefold (normalized_key, -1);
11947
11948       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
11949         retval = FALSE;
11950     }
11951
11952   g_value_unset (&transformed);
11953   g_free (normalized_key);
11954   g_free (normalized_string);
11955   g_free (case_normalized_key);
11956   g_free (case_normalized_string);
11957
11958   return retval;
11959 }
11960
11961 static gboolean
11962 pspp_sheet_view_search_iter (GtkTreeModel     *model,
11963                              PsppSheetSelection *selection,
11964                              GtkTreeIter      *iter,
11965                              const gchar      *text,
11966                              gint             *count,
11967                              gint              n)
11968 {
11969   int node = -1;
11970   GtkTreePath *path;
11971
11972   PsppSheetView *tree_view = pspp_sheet_selection_get_tree_view (selection);
11973
11974   path = gtk_tree_model_get_path (model, iter);
11975   _pspp_sheet_view_find_node (tree_view, path, &node);
11976
11977   do
11978     {
11979       gboolean done = FALSE;
11980
11981       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
11982         {
11983           (*count)++;
11984           if (*count == n)
11985             {
11986               pspp_sheet_view_scroll_to_cell (tree_view, path, NULL,
11987                                               TRUE, 0.5, 0.0);
11988               pspp_sheet_selection_select_iter (selection, iter);
11989               pspp_sheet_view_real_set_cursor (tree_view, path, FALSE, TRUE);
11990
11991               if (path)
11992                 gtk_tree_path_free (path);
11993
11994               return TRUE;
11995             }
11996         }
11997
11998
11999       do
12000         {
12001           node = pspp_sheet_view_node_next (tree_view, node);
12002
12003           if (node >= 0)
12004             {
12005               gboolean has_next;
12006
12007               has_next = gtk_tree_model_iter_next (model, iter);
12008
12009               done = TRUE;
12010               gtk_tree_path_next (path);
12011
12012               /* sanity check */
12013               TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
12014             }
12015           else
12016             {
12017               if (path)
12018                 gtk_tree_path_free (path);
12019
12020               /* we've run out of tree, done with this func */
12021               return FALSE;
12022             }
12023         }
12024       while (!done);
12025     }
12026   while (1);
12027
12028   return FALSE;
12029 }
12030
12031 static void
12032 pspp_sheet_view_search_init (GtkWidget   *entry,
12033                            PsppSheetView *tree_view)
12034 {
12035   gint ret;
12036   gint count = 0;
12037   const gchar *text;
12038   GtkTreeIter iter;
12039   GtkTreeModel *model;
12040   PsppSheetSelection *selection;
12041
12042   g_return_if_fail (GTK_IS_ENTRY (entry));
12043   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
12044
12045   text = gtk_entry_get_text (GTK_ENTRY (entry));
12046
12047   model = pspp_sheet_view_get_model (tree_view);
12048   selection = pspp_sheet_view_get_selection (tree_view);
12049
12050   /* search */
12051   pspp_sheet_selection_unselect_all (selection);
12052   if (tree_view->priv->typeselect_flush_timeout
12053       && !tree_view->priv->search_custom_entry_set)
12054     {
12055       g_source_remove (tree_view->priv->typeselect_flush_timeout);
12056       tree_view->priv->typeselect_flush_timeout =
12057         gdk_threads_add_timeout (PSPP_SHEET_VIEW_SEARCH_DIALOG_TIMEOUT,
12058                        (GSourceFunc) pspp_sheet_view_search_entry_flush_timeout,
12059                        tree_view);
12060     }
12061
12062   if (*text == '\0')
12063     return;
12064
12065   if (!gtk_tree_model_get_iter_first (model, &iter))
12066     return;
12067
12068   ret = pspp_sheet_view_search_iter (model, selection,
12069                                    &iter, text,
12070                                    &count, 1);
12071
12072   if (ret)
12073     tree_view->priv->selected_iter = 1;
12074 }
12075
12076 static void
12077 pspp_sheet_view_remove_widget (GtkCellEditable *cell_editable,
12078                              PsppSheetView     *tree_view)
12079 {
12080   if (tree_view->priv->edited_column == NULL)
12081     return;
12082
12083   _pspp_sheet_view_column_stop_editing (tree_view->priv->edited_column);
12084   tree_view->priv->edited_column = NULL;
12085
12086   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
12087     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
12088
12089   g_signal_handlers_disconnect_by_func (cell_editable,
12090                                         pspp_sheet_view_remove_widget,
12091                                         tree_view);
12092   g_signal_handlers_disconnect_by_func (cell_editable,
12093                                         pspp_sheet_view_editable_button_press_event,
12094                                         tree_view);
12095   g_signal_handlers_disconnect_by_func (cell_editable,
12096                                         pspp_sheet_view_editable_clicked,
12097                                         tree_view);
12098
12099   gtk_container_remove (GTK_CONTAINER (tree_view),
12100                         GTK_WIDGET (cell_editable));
12101
12102   /* FIXME should only redraw a single node */
12103   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
12104 }
12105
12106 static gboolean
12107 pspp_sheet_view_start_editing (PsppSheetView *tree_view,
12108                              GtkTreePath *cursor_path)
12109 {
12110   GtkTreeIter iter;
12111   GdkRectangle background_area;
12112   GdkRectangle cell_area;
12113   GtkCellEditable *editable_widget = NULL;
12114   gchar *path_string;
12115   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
12116   gint retval = FALSE;
12117   int cursor_node;
12118
12119   g_assert (tree_view->priv->focus_column);
12120
12121   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12122     return FALSE;
12123
12124   _pspp_sheet_view_find_node (tree_view, cursor_path, &cursor_node);
12125   if (cursor_node < 0)
12126     return FALSE;
12127
12128   path_string = gtk_tree_path_to_string (cursor_path);
12129   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
12130
12131   pspp_sheet_view_column_cell_set_cell_data (tree_view->priv->focus_column,
12132                                            tree_view->priv->model,
12133                                            &iter);
12134   pspp_sheet_view_get_background_area (tree_view,
12135                                      cursor_path,
12136                                      tree_view->priv->focus_column,
12137                                      &background_area);
12138   pspp_sheet_view_get_cell_area (tree_view,
12139                                cursor_path,
12140                                tree_view->priv->focus_column,
12141                                &cell_area);
12142
12143   if (_pspp_sheet_view_column_cell_event (tree_view->priv->focus_column,
12144                                         &editable_widget,
12145                                         NULL,
12146                                         path_string,
12147                                         &background_area,
12148                                         &cell_area,
12149                                         flags))
12150     {
12151       retval = TRUE;
12152       if (editable_widget != NULL)
12153         {
12154           gint left, right;
12155           GdkRectangle area;
12156           GtkCellRenderer *cell;
12157
12158           area = cell_area;
12159           cell = _pspp_sheet_view_column_get_edited_cell (tree_view->priv->focus_column);
12160
12161           _pspp_sheet_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
12162
12163           area.x += left;
12164           area.width -= right + left;
12165
12166           pspp_sheet_view_real_start_editing (tree_view,
12167                                             tree_view->priv->focus_column,
12168                                             cursor_path,
12169                                             editable_widget,
12170                                             &area,
12171                                             NULL,
12172                                             flags);
12173         }
12174
12175     }
12176   g_free (path_string);
12177   return retval;
12178 }
12179
12180 static gboolean
12181 pspp_sheet_view_editable_button_press_event (GtkWidget *widget,
12182                                              GdkEventButton *event,
12183                                              PsppSheetView *sheet_view)
12184 {
12185   gint node;
12186
12187   node = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
12188                                              "pspp-sheet-view-node"));
12189   return pspp_sheet_view_row_head_clicked (sheet_view,
12190                                            node,
12191                                            sheet_view->priv->edited_column,
12192                                            event);
12193 }
12194
12195 static void
12196 pspp_sheet_view_editable_clicked (GtkButton *button,
12197                                   PsppSheetView *sheet_view)
12198 {
12199   pspp_sheet_view_editable_button_press_event (GTK_WIDGET (button), NULL,
12200                                                sheet_view);
12201 }
12202
12203 static gboolean
12204 is_all_selected (GtkWidget *widget)
12205 {
12206   GtkEntryBuffer *buffer;
12207   gint start_pos, end_pos;
12208
12209   if (!GTK_IS_ENTRY (widget))
12210     return FALSE;
12211
12212   buffer = gtk_entry_get_buffer (GTK_ENTRY (widget));
12213   return (gtk_editable_get_selection_bounds (GTK_EDITABLE (widget),
12214                                              &start_pos, &end_pos)
12215           && start_pos == 0
12216           && end_pos == gtk_entry_buffer_get_length (buffer));
12217 }
12218
12219 static gboolean
12220 is_at_left (GtkWidget *widget)
12221 {
12222   return (GTK_IS_ENTRY (widget)
12223           && gtk_editable_get_position (GTK_EDITABLE (widget)) == 0);
12224 }
12225
12226 static gboolean
12227 is_at_right (GtkWidget *widget)
12228 {
12229   GtkEntryBuffer *buffer;
12230   gint length;
12231
12232   if (!GTK_IS_ENTRY (widget))
12233     return FALSE;
12234
12235   buffer = gtk_entry_get_buffer (GTK_ENTRY (widget));
12236   length = gtk_entry_buffer_get_length (buffer);
12237   return gtk_editable_get_position (GTK_EDITABLE (widget)) == length;
12238 }
12239
12240 static gboolean
12241 pspp_sheet_view_event (GtkWidget *widget,
12242                        GdkEventKey *event,
12243                        PsppSheetView *tree_view)
12244 {
12245   PsppSheetViewColumn *column;
12246   GtkTreePath *path;
12247   gboolean handled;
12248   gboolean cancel;
12249   guint keyval;
12250   guint state;
12251   gint row;
12252
12253   /* Intercept only key press events.
12254      It would make sense to use "key-press-event" instead of "event", but
12255      GtkEntry attaches its own signal handler to "key-press-event" that runs
12256      before ours and overrides our desired behavior for GDK_Up and GDK_Down.
12257   */
12258   if (event->type != GDK_KEY_PRESS)
12259     return FALSE;
12260
12261   if (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK))
12262     {
12263       /* Pass through most keys that include modifiers. */
12264       if ((event->keyval == GDK_Tab || event->keyval == GDK_ISO_Left_Tab)
12265           && !(event->state & (GDK_CONTROL_MASK | GDK_MOD1_MASK)))
12266         {
12267           /* Special case for Shift-Tab. */
12268         }
12269       else
12270         return FALSE;
12271     }
12272
12273   keyval = event->keyval;
12274   state = event->state & ~(GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK);
12275   cancel = FALSE;
12276   switch (event->keyval)
12277     {
12278     case GDK_Left:      case GDK_KP_Left:
12279       if (!is_all_selected (widget) && !is_at_left (widget))
12280         return FALSE;
12281       break;
12282
12283     case GDK_Right:     case GDK_KP_Right:
12284       if (!is_all_selected (widget) && !is_at_right (widget))
12285         return FALSE;
12286       break;
12287
12288     case GDK_Up:        case GDK_KP_Up:
12289     case GDK_Down:      case GDK_KP_Down:
12290       break;
12291
12292     case GDK_Page_Up:   case GDK_KP_Page_Up:
12293     case GDK_Page_Down: case GDK_KP_Page_Down:
12294       break;
12295
12296     case GDK_Escape:
12297       cancel = TRUE;
12298       break;
12299
12300     case GDK_Return:
12301       keyval = GDK_Down;
12302       break;
12303
12304     case GDK_Tab:       case GDK_KP_Tab:
12305     case GDK_ISO_Left_Tab:
12306       keyval = GDK_Tab;
12307       state |= event->state & GDK_SHIFT_MASK;
12308       break;
12309
12310     default:
12311       return FALSE;
12312     }
12313
12314   row = tree_view->priv->edited_row;
12315   column = tree_view->priv->edited_column;
12316   path = gtk_tree_path_new_from_indices (row, -1);
12317
12318   pspp_sheet_view_stop_editing (tree_view, cancel);
12319   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
12320
12321   pspp_sheet_view_set_cursor (tree_view, path, column, FALSE);
12322   gtk_tree_path_free (path);
12323
12324   handled = gtk_binding_set_activate (edit_bindings, keyval, state,
12325                                       GTK_OBJECT (tree_view));
12326   if (handled)
12327     g_signal_stop_emission_by_name (widget, "event");
12328
12329   pspp_sheet_view_get_cursor (tree_view, &path, NULL);
12330   pspp_sheet_view_start_editing (tree_view, path);
12331   gtk_tree_path_free (path);
12332
12333   return handled;
12334 }
12335
12336 static void
12337 pspp_sheet_view_override_cell_keypresses (GtkWidget *widget,
12338                                           gpointer data)
12339 {
12340   PsppSheetView *sheet_view = data;
12341
12342   g_signal_connect (widget, "event",
12343                     G_CALLBACK (pspp_sheet_view_event),
12344                     sheet_view);
12345
12346   if (GTK_IS_CONTAINER (widget))
12347     gtk_container_foreach (GTK_CONTAINER (widget),
12348                            pspp_sheet_view_override_cell_keypresses,
12349                            data);
12350 }
12351
12352 static void
12353 pspp_sheet_view_real_start_editing (PsppSheetView       *tree_view,
12354                                   PsppSheetViewColumn *column,
12355                                   GtkTreePath       *path,
12356                                   GtkCellEditable   *cell_editable,
12357                                   GdkRectangle      *cell_area,
12358                                   GdkEvent          *event,
12359                                   guint              flags)
12360 {
12361   PsppSheetSelectionMode mode = pspp_sheet_selection_get_mode (tree_view->priv->selection);
12362   gint pre_val = tree_view->priv->vadjustment->value;
12363   GtkRequisition requisition;
12364   gint row;
12365
12366   g_return_if_fail (gtk_tree_path_get_depth (path) == 1);
12367
12368   tree_view->priv->edited_column = column;
12369   _pspp_sheet_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
12370
12371   row = gtk_tree_path_get_indices (path)[0];
12372   tree_view->priv->edited_row = row;
12373   pspp_sheet_view_real_set_cursor (tree_view, path, FALSE, TRUE);
12374   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
12375
12376   pspp_sheet_selection_unselect_all_columns (tree_view->priv->selection);
12377   pspp_sheet_selection_select_column (tree_view->priv->selection, column);
12378   tree_view->priv->anchor_column = column;
12379
12380   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
12381
12382   PSPP_SHEET_VIEW_SET_FLAG (tree_view, PSPP_SHEET_VIEW_DRAW_KEYFOCUS);
12383
12384   if (requisition.height < cell_area->height)
12385     {
12386       gint diff = cell_area->height - requisition.height;
12387       pspp_sheet_view_put (tree_view,
12388                          GTK_WIDGET (cell_editable),
12389                          cell_area->x, cell_area->y + diff/2,
12390                          cell_area->width, requisition.height);
12391     }
12392   else
12393     {
12394       pspp_sheet_view_put (tree_view,
12395                          GTK_WIDGET (cell_editable),
12396                          cell_area->x, cell_area->y,
12397                          cell_area->width, cell_area->height);
12398     }
12399
12400   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
12401                                    (GdkEvent *)event);
12402
12403   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
12404   g_signal_connect (cell_editable, "remove-widget",
12405                     G_CALLBACK (pspp_sheet_view_remove_widget), tree_view);
12406   if (mode == PSPP_SHEET_SELECTION_RECTANGLE && column->row_head &&
12407       GTK_IS_BUTTON (cell_editable))
12408     {
12409       g_signal_connect (cell_editable, "button-press-event",
12410                         G_CALLBACK (pspp_sheet_view_editable_button_press_event),
12411                         tree_view);
12412       g_object_set_data (G_OBJECT (cell_editable), "pspp-sheet-view-node",
12413                          GINT_TO_POINTER (row));
12414       g_signal_connect (cell_editable, "clicked",
12415                         G_CALLBACK (pspp_sheet_view_editable_clicked),
12416                         tree_view);
12417     }
12418
12419   pspp_sheet_view_override_cell_keypresses (GTK_WIDGET (cell_editable),
12420                                             tree_view);
12421 }
12422
12423 void
12424 pspp_sheet_view_stop_editing (PsppSheetView *tree_view,
12425                               gboolean     cancel_editing)
12426 {
12427   PsppSheetViewColumn *column;
12428   GtkCellRenderer *cell;
12429
12430   if (tree_view->priv->edited_column == NULL)
12431     return;
12432
12433   /*
12434    * This is very evil. We need to do this, because
12435    * gtk_cell_editable_editing_done may trigger pspp_sheet_view_row_changed
12436    * later on. If pspp_sheet_view_row_changed notices
12437    * tree_view->priv->edited_column != NULL, it'll call
12438    * pspp_sheet_view_stop_editing again. Bad things will happen then.
12439    *
12440    * Please read that again if you intend to modify anything here.
12441    */
12442
12443   column = tree_view->priv->edited_column;
12444   tree_view->priv->edited_column = NULL;
12445
12446   cell = _pspp_sheet_view_column_get_edited_cell (column);
12447   gtk_cell_renderer_stop_editing (cell, cancel_editing);
12448
12449   if (!cancel_editing)
12450     gtk_cell_editable_editing_done (column->editable_widget);
12451
12452   tree_view->priv->edited_column = column;
12453
12454   gtk_cell_editable_remove_widget (column->editable_widget);
12455 }
12456
12457
12458 /**
12459  * pspp_sheet_view_set_hover_selection:
12460  * @tree_view: a #PsppSheetView
12461  * @hover: %TRUE to enable hover selection mode
12462  *
12463  * Enables of disables the hover selection mode of @tree_view.
12464  * Hover selection makes the selected row follow the pointer.
12465  * Currently, this works only for the selection modes
12466  * %PSPP_SHEET_SELECTION_SINGLE and %PSPP_SHEET_SELECTION_BROWSE.
12467  *
12468  * Since: 2.6
12469  **/
12470 void
12471 pspp_sheet_view_set_hover_selection (PsppSheetView *tree_view,
12472                                    gboolean     hover)
12473 {
12474   hover = hover != FALSE;
12475
12476   if (hover != tree_view->priv->hover_selection)
12477     {
12478       tree_view->priv->hover_selection = hover;
12479
12480       g_object_notify (G_OBJECT (tree_view), "hover-selection");
12481     }
12482 }
12483
12484 /**
12485  * pspp_sheet_view_get_hover_selection:
12486  * @tree_view: a #PsppSheetView
12487  *
12488  * Returns whether hover selection mode is turned on for @tree_view.
12489  *
12490  * Return value: %TRUE if @tree_view is in hover selection mode
12491  *
12492  * Since: 2.6
12493  **/
12494 gboolean
12495 pspp_sheet_view_get_hover_selection (PsppSheetView *tree_view)
12496 {
12497   return tree_view->priv->hover_selection;
12498 }
12499
12500 /**
12501  * pspp_sheet_view_set_rubber_banding:
12502  * @tree_view: a #PsppSheetView
12503  * @enable: %TRUE to enable rubber banding
12504  *
12505  * Enables or disables rubber banding in @tree_view.  If the selection mode is
12506  * #PSPP_SHEET_SELECTION_MULTIPLE or #PSPP_SHEET_SELECTION_RECTANGLE, rubber
12507  * banding will allow the user to select multiple rows by dragging the mouse.
12508  *
12509  * Since: 2.10
12510  **/
12511 void
12512 pspp_sheet_view_set_rubber_banding (PsppSheetView *tree_view,
12513                                   gboolean     enable)
12514 {
12515   enable = enable != FALSE;
12516
12517   if (enable != tree_view->priv->rubber_banding_enable)
12518     {
12519       tree_view->priv->rubber_banding_enable = enable;
12520
12521       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
12522     }
12523 }
12524
12525 /**
12526  * pspp_sheet_view_get_rubber_banding:
12527  * @tree_view: a #PsppSheetView
12528  *
12529  * Returns whether rubber banding is turned on for @tree_view.  If the
12530  * selection mode is #PSPP_SHEET_SELECTION_MULTIPLE or
12531  * #PSPP_SHEET_SELECTION_RECTANGLE, rubber banding will allow the user to
12532  * select multiple rows by dragging the mouse.
12533  *
12534  * Return value: %TRUE if rubber banding in @tree_view is enabled.
12535  *
12536  * Since: 2.10
12537  **/
12538 gboolean
12539 pspp_sheet_view_get_rubber_banding (PsppSheetView *tree_view)
12540 {
12541   return tree_view->priv->rubber_banding_enable;
12542 }
12543
12544 /**
12545  * pspp_sheet_view_is_rubber_banding_active:
12546  * @tree_view: a #PsppSheetView
12547  *
12548  * Returns whether a rubber banding operation is currently being done
12549  * in @tree_view.
12550  *
12551  * Return value: %TRUE if a rubber banding operation is currently being
12552  * done in @tree_view.
12553  *
12554  * Since: 2.12
12555  **/
12556 gboolean
12557 pspp_sheet_view_is_rubber_banding_active (PsppSheetView *tree_view)
12558 {
12559   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
12560
12561   if (tree_view->priv->rubber_banding_enable
12562       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
12563     return TRUE;
12564
12565   return FALSE;
12566 }
12567
12568 static void
12569 pspp_sheet_view_grab_notify (GtkWidget *widget,
12570                            gboolean   was_grabbed)
12571 {
12572   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
12573
12574   tree_view->priv->in_grab = !was_grabbed;
12575
12576   if (!was_grabbed)
12577     {
12578       tree_view->priv->pressed_button = -1;
12579
12580       if (tree_view->priv->rubber_band_status)
12581         pspp_sheet_view_stop_rubber_band (tree_view);
12582     }
12583 }
12584
12585 static void
12586 pspp_sheet_view_state_changed (GtkWidget      *widget,
12587                              GtkStateType    previous_state)
12588 {
12589   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
12590
12591   if (gtk_widget_get_realized (widget))
12592     {
12593       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
12594       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
12595     }
12596
12597   gtk_widget_queue_draw (widget);
12598 }
12599
12600 /**
12601  * pspp_sheet_view_get_grid_lines:
12602  * @tree_view: a #PsppSheetView
12603  *
12604  * Returns which grid lines are enabled in @tree_view.
12605  *
12606  * Return value: a #PsppSheetViewGridLines value indicating which grid lines
12607  * are enabled.
12608  *
12609  * Since: 2.10
12610  */
12611 PsppSheetViewGridLines
12612 pspp_sheet_view_get_grid_lines (PsppSheetView *tree_view)
12613 {
12614   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), 0);
12615
12616   return tree_view->priv->grid_lines;
12617 }
12618
12619 /**
12620  * pspp_sheet_view_set_grid_lines:
12621  * @tree_view: a #PsppSheetView
12622  * @grid_lines: a #PsppSheetViewGridLines value indicating which grid lines to
12623  * enable.
12624  *
12625  * Sets which grid lines to draw in @tree_view.
12626  *
12627  * Since: 2.10
12628  */
12629 void
12630 pspp_sheet_view_set_grid_lines (PsppSheetView           *tree_view,
12631                               PsppSheetViewGridLines   grid_lines)
12632 {
12633   PsppSheetViewPrivate *priv;
12634   PsppSheetViewGridLines old_grid_lines;
12635
12636   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
12637
12638   priv = tree_view->priv;
12639
12640   old_grid_lines = priv->grid_lines;
12641   priv->grid_lines = grid_lines;
12642
12643   if (old_grid_lines != grid_lines)
12644     {
12645       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
12646
12647       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
12648     }
12649 }
12650
12651 /**
12652  * pspp_sheet_view_get_special_cells:
12653  * @tree_view: a #PsppSheetView
12654  *
12655  * Returns which grid lines are enabled in @tree_view.
12656  *
12657  * Return value: a #PsppSheetViewSpecialCells value indicating whether rows in
12658  * the sheet view contain special cells.
12659  */
12660 PsppSheetViewSpecialCells
12661 pspp_sheet_view_get_special_cells (PsppSheetView *tree_view)
12662 {
12663   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), 0);
12664
12665   return tree_view->priv->special_cells;
12666 }
12667
12668 /**
12669  * pspp_sheet_view_set_special_cells:
12670  * @tree_view: a #PsppSheetView
12671  * @special_cells: a #PsppSheetViewSpecialCells value indicating whether rows in
12672  * the sheet view contain special cells.
12673  *
12674  * Sets whether rows in the sheet view contain special cells, controlling the
12675  * rendering of row selections.
12676  */
12677 void
12678 pspp_sheet_view_set_special_cells (PsppSheetView           *tree_view,
12679                               PsppSheetViewSpecialCells   special_cells)
12680 {
12681   PsppSheetViewPrivate *priv;
12682
12683   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
12684
12685   priv = tree_view->priv;
12686
12687   if (priv->special_cells != special_cells)
12688     {
12689       priv->special_cells = special_cells;
12690       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
12691       g_object_notify (G_OBJECT (tree_view), "special-cells");
12692     }
12693 }
12694
12695 int
12696 pspp_sheet_view_get_fixed_height (const PsppSheetView *tree_view)
12697 {
12698   /* XXX (re)calculate fixed_height if necessary */
12699   return tree_view->priv->fixed_height;
12700 }
12701
12702 void
12703 pspp_sheet_view_set_fixed_height (PsppSheetView *tree_view,
12704                                   int fixed_height)
12705 {
12706   g_return_if_fail (fixed_height > 0);
12707
12708   if (tree_view->priv->fixed_height != fixed_height)
12709     {
12710       tree_view->priv->fixed_height = fixed_height;
12711       g_object_notify (G_OBJECT (tree_view), "fixed-height");
12712     }
12713   if (!tree_view->priv->fixed_height_set)
12714     {
12715       tree_view->priv->fixed_height_set = TRUE;
12716       g_object_notify (G_OBJECT (tree_view), "fixed-height-set");
12717     }
12718 }
12719
12720 /**
12721  * pspp_sheet_view_set_tooltip_row:
12722  * @tree_view: a #PsppSheetView
12723  * @tooltip: a #GtkTooltip
12724  * @path: a #GtkTreePath
12725  *
12726  * Sets the tip area of @tooltip to be the area covered by the row at @path.
12727  * See also pspp_sheet_view_set_tooltip_column() for a simpler alternative.
12728  * See also gtk_tooltip_set_tip_area().
12729  *
12730  * Since: 2.12
12731  */
12732 void
12733 pspp_sheet_view_set_tooltip_row (PsppSheetView *tree_view,
12734                                GtkTooltip  *tooltip,
12735                                GtkTreePath *path)
12736 {
12737   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
12738   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
12739
12740   pspp_sheet_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
12741 }
12742
12743 /**
12744  * pspp_sheet_view_set_tooltip_cell:
12745  * @tree_view: a #PsppSheetView
12746  * @tooltip: a #GtkTooltip
12747  * @path: (allow-none): a #GtkTreePath or %NULL
12748  * @column: (allow-none): a #PsppSheetViewColumn or %NULL
12749  * @cell: (allow-none): a #GtkCellRenderer or %NULL
12750  *
12751  * Sets the tip area of @tooltip to the area @path, @column and @cell have
12752  * in common.  For example if @path is %NULL and @column is set, the tip
12753  * area will be set to the full area covered by @column.  See also
12754  * gtk_tooltip_set_tip_area().
12755  *
12756  * See also pspp_sheet_view_set_tooltip_column() for a simpler alternative.
12757  *
12758  * Since: 2.12
12759  */
12760 void
12761 pspp_sheet_view_set_tooltip_cell (PsppSheetView       *tree_view,
12762                                 GtkTooltip        *tooltip,
12763                                 GtkTreePath       *path,
12764                                 PsppSheetViewColumn *column,
12765                                 GtkCellRenderer   *cell)
12766 {
12767   GdkRectangle rect;
12768
12769   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
12770   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
12771   g_return_if_fail (column == NULL || PSPP_IS_SHEET_VIEW_COLUMN (column));
12772   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
12773
12774   /* Determine x values. */
12775   if (column && cell)
12776     {
12777       GdkRectangle tmp;
12778       gint start, width;
12779
12780       pspp_sheet_view_get_cell_area (tree_view, path, column, &tmp);
12781       pspp_sheet_view_column_cell_get_position (column, cell, &start, &width);
12782
12783       pspp_sheet_view_convert_bin_window_to_widget_coords (tree_view,
12784                                                          tmp.x + start, 0,
12785                                                          &rect.x, NULL);
12786       rect.width = width;
12787     }
12788   else if (column)
12789     {
12790       GdkRectangle tmp;
12791
12792       pspp_sheet_view_get_background_area (tree_view, NULL, column, &tmp);
12793       pspp_sheet_view_convert_bin_window_to_widget_coords (tree_view,
12794                                                          tmp.x, 0,
12795                                                          &rect.x, NULL);
12796       rect.width = tmp.width;
12797     }
12798   else
12799     {
12800       rect.x = 0;
12801       rect.width = GTK_WIDGET (tree_view)->allocation.width;
12802     }
12803
12804   /* Determine y values. */
12805   if (path)
12806     {
12807       GdkRectangle tmp;
12808
12809       pspp_sheet_view_get_background_area (tree_view, path, NULL, &tmp);
12810       pspp_sheet_view_convert_bin_window_to_widget_coords (tree_view,
12811                                                          0, tmp.y,
12812                                                          NULL, &rect.y);
12813       rect.height = tmp.height;
12814     }
12815   else
12816     {
12817       rect.y = 0;
12818       rect.height = tree_view->priv->vadjustment->page_size;
12819     }
12820
12821   gtk_tooltip_set_tip_area (tooltip, &rect);
12822 }
12823
12824 /**
12825  * pspp_sheet_view_get_tooltip_context:
12826  * @tree_view: a #PsppSheetView
12827  * @x: the x coordinate (relative to widget coordinates)
12828  * @y: the y coordinate (relative to widget coordinates)
12829  * @keyboard_tip: whether this is a keyboard tooltip or not
12830  * @model: (allow-none): a pointer to receive a #GtkTreeModel or %NULL
12831  * @path: (allow-none): a pointer to receive a #GtkTreePath or %NULL
12832  * @iter: (allow-none): a pointer to receive a #GtkTreeIter or %NULL
12833  *
12834  * This function is supposed to be used in a #GtkWidget::query-tooltip
12835  * signal handler for #PsppSheetView.  The @x, @y and @keyboard_tip values
12836  * which are received in the signal handler, should be passed to this
12837  * function without modification.
12838  *
12839  * The return value indicates whether there is a tree view row at the given
12840  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
12841  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
12842  * @model, @path and @iter which have been provided will be set to point to
12843  * that row and the corresponding model.  @x and @y will always be converted
12844  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
12845  *
12846  * Return value: whether or not the given tooltip context points to a row.
12847  *
12848  * Since: 2.12
12849  */
12850 gboolean
12851 pspp_sheet_view_get_tooltip_context (PsppSheetView   *tree_view,
12852                                    gint          *x,
12853                                    gint          *y,
12854                                    gboolean       keyboard_tip,
12855                                    GtkTreeModel **model,
12856                                    GtkTreePath  **path,
12857                                    GtkTreeIter   *iter)
12858 {
12859   GtkTreePath *tmppath = NULL;
12860
12861   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), FALSE);
12862   g_return_val_if_fail (x != NULL, FALSE);
12863   g_return_val_if_fail (y != NULL, FALSE);
12864
12865   if (keyboard_tip)
12866     {
12867       pspp_sheet_view_get_cursor (tree_view, &tmppath, NULL);
12868
12869       if (!tmppath)
12870         return FALSE;
12871     }
12872   else
12873     {
12874       pspp_sheet_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
12875                                                          x, y);
12876
12877       if (!pspp_sheet_view_get_path_at_pos (tree_view, *x, *y,
12878                                           &tmppath, NULL, NULL, NULL))
12879         return FALSE;
12880     }
12881
12882   if (model)
12883     *model = pspp_sheet_view_get_model (tree_view);
12884
12885   if (iter)
12886     gtk_tree_model_get_iter (pspp_sheet_view_get_model (tree_view),
12887                              iter, tmppath);
12888
12889   if (path)
12890     *path = tmppath;
12891   else
12892     gtk_tree_path_free (tmppath);
12893
12894   return TRUE;
12895 }
12896
12897 static gboolean
12898 pspp_sheet_view_set_tooltip_query_cb (GtkWidget  *widget,
12899                                     gint        x,
12900                                     gint        y,
12901                                     gboolean    keyboard_tip,
12902                                     GtkTooltip *tooltip,
12903                                     gpointer    data)
12904 {
12905   GValue value = { 0, };
12906   GValue transformed = { 0, };
12907   GtkTreeIter iter;
12908   GtkTreePath *path;
12909   GtkTreeModel *model;
12910   PsppSheetView *tree_view = PSPP_SHEET_VIEW (widget);
12911
12912   if (!pspp_sheet_view_get_tooltip_context (PSPP_SHEET_VIEW (widget),
12913                                           &x, &y,
12914                                           keyboard_tip,
12915                                           &model, &path, &iter))
12916     return FALSE;
12917
12918   gtk_tree_model_get_value (model, &iter,
12919                             tree_view->priv->tooltip_column, &value);
12920
12921   g_value_init (&transformed, G_TYPE_STRING);
12922
12923   if (!g_value_transform (&value, &transformed))
12924     {
12925       g_value_unset (&value);
12926       gtk_tree_path_free (path);
12927
12928       return FALSE;
12929     }
12930
12931   g_value_unset (&value);
12932
12933   if (!g_value_get_string (&transformed))
12934     {
12935       g_value_unset (&transformed);
12936       gtk_tree_path_free (path);
12937
12938       return FALSE;
12939     }
12940
12941   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
12942   pspp_sheet_view_set_tooltip_row (tree_view, tooltip, path);
12943
12944   gtk_tree_path_free (path);
12945   g_value_unset (&transformed);
12946
12947   return TRUE;
12948 }
12949
12950 /**
12951  * pspp_sheet_view_set_tooltip_column:
12952  * @tree_view: a #PsppSheetView
12953  * @column: an integer, which is a valid column number for @tree_view's model
12954  *
12955  * If you only plan to have simple (text-only) tooltips on full rows, you
12956  * can use this function to have #PsppSheetView handle these automatically
12957  * for you. @column should be set to the column in @tree_view's model
12958  * containing the tooltip texts, or -1 to disable this feature.
12959  *
12960  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
12961  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
12962  *
12963  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
12964  * so &amp;, &lt;, etc have to be escaped in the text.
12965  *
12966  * Since: 2.12
12967  */
12968 void
12969 pspp_sheet_view_set_tooltip_column (PsppSheetView *tree_view,
12970                                   gint         column)
12971 {
12972   g_return_if_fail (PSPP_IS_SHEET_VIEW (tree_view));
12973
12974   if (column == tree_view->priv->tooltip_column)
12975     return;
12976
12977   if (column == -1)
12978     {
12979       g_signal_handlers_disconnect_by_func (tree_view,
12980                                             pspp_sheet_view_set_tooltip_query_cb,
12981                                             NULL);
12982       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
12983     }
12984   else
12985     {
12986       if (tree_view->priv->tooltip_column == -1)
12987         {
12988           g_signal_connect (tree_view, "query-tooltip",
12989                             G_CALLBACK (pspp_sheet_view_set_tooltip_query_cb), NULL);
12990           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
12991         }
12992     }
12993
12994   tree_view->priv->tooltip_column = column;
12995   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
12996 }
12997
12998 /**
12999  * pspp_sheet_view_get_tooltip_column:
13000  * @tree_view: a #PsppSheetView
13001  *
13002  * Returns the column of @tree_view's model which is being used for
13003  * displaying tooltips on @tree_view's rows.
13004  *
13005  * Return value: the index of the tooltip column that is currently being
13006  * used, or -1 if this is disabled.
13007  *
13008  * Since: 2.12
13009  */
13010 gint
13011 pspp_sheet_view_get_tooltip_column (PsppSheetView *tree_view)
13012 {
13013   g_return_val_if_fail (PSPP_IS_SHEET_VIEW (tree_view), 0);
13014
13015   return tree_view->priv->tooltip_column;
13016 }
13017
13018 gboolean
13019 _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
13020                                   GValue                *return_accu,
13021                                   const GValue          *handler_return,
13022                                   gpointer               dummy)
13023 {
13024   gboolean continue_emission;
13025   gboolean signal_handled;
13026
13027   signal_handled = g_value_get_boolean (handler_return);
13028   g_value_set_boolean (return_accu, signal_handled);
13029   continue_emission = !signal_handled;
13030
13031   return continue_emission;
13032 }
13033
13034 GType
13035 pspp_sheet_view_grid_lines_get_type (void)
13036 {
13037     static GType etype = 0;
13038     if (G_UNLIKELY(etype == 0)) {
13039         static const GEnumValue values[] = {
13040             { PSPP_SHEET_VIEW_GRID_LINES_NONE, "PSPP_SHEET_VIEW_GRID_LINES_NONE", "none" },
13041             { PSPP_SHEET_VIEW_GRID_LINES_HORIZONTAL, "PSPP_SHEET_VIEW_GRID_LINES_HORIZONTAL", "horizontal" },
13042             { PSPP_SHEET_VIEW_GRID_LINES_VERTICAL, "PSPP_SHEET_VIEW_GRID_LINES_VERTICAL", "vertical" },
13043             { PSPP_SHEET_VIEW_GRID_LINES_BOTH, "PSPP_SHEET_VIEW_GRID_LINES_BOTH", "both" },
13044             { 0, NULL, NULL }
13045         };
13046         etype = g_enum_register_static (g_intern_static_string ("PsppSheetViewGridLines"), values);
13047     }
13048     return etype;
13049 }
13050
13051 GType
13052 pspp_sheet_view_special_cells_get_type (void)
13053 {
13054     static GType etype = 0;
13055     if (G_UNLIKELY(etype == 0)) {
13056         static const GEnumValue values[] = {
13057             { PSPP_SHEET_VIEW_SPECIAL_CELLS_DETECT, "PSPP_SHEET_VIEW_SPECIAL_CELLS_DETECT", "detect" },
13058             { PSPP_SHEET_VIEW_SPECIAL_CELLS_YES, "PSPP_SHEET_VIEW_SPECIAL_CELLS_YES", "yes" },
13059             { PSPP_SHEET_VIEW_SPECIAL_CELLS_NO, "PSPP_SHEET_VIEW_SPECIAL_CELLS_NO", "no" },
13060             { 0, NULL, NULL }
13061         };
13062         etype = g_enum_register_static (g_intern_static_string ("PsppSheetViewSpecialCells"), values);
13063     }
13064     return etype;
13065 }