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