pintos-os.org Git - pspp/blob - src/ui/gui/psppire-spreadsheet-model.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2013, 2014  Free Software Foundation
   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 /* This file implements a GtkTreeModel.  It allows GtkComboBox and
  18    GtkTreeView to display the names and non-empty cell ranges of the
  19    sheets aka "Tables" of spreadsheet files.
  20    It doesn't take any notice of the spreadsheet data itself.
  21 */
  22
  23 #include <config.h>
  24 #include <glib.h>
  25
  26 #include <stdint.h>
  27
  28 #include <gettext.h>
  29 #define _(msgid) gettext (msgid)
  30 #define N_(msgid) msgid
  31
  32
  33 #include "psppire-spreadsheet-model.h"
  34 #include "data/spreadsheet-reader.h"
  35
  36 static void psppire_spreadsheet_model_finalize (GObject * object);
  37 static void psppire_spreadsheet_model_dispose (GObject * object);
  38
  39 static GObjectClass *parent_class = NULL;
  40
  41 static void spreadsheet_tree_model_init (GtkTreeModelIface * iface);
  42
  43 G_DEFINE_TYPE_WITH_CODE (PsppireSpreadsheetModel,\
  44                          psppire_spreadsheet_model,\
  45                          G_TYPE_OBJECT,
  46                          G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL,
  47                                                 spreadsheet_tree_model_init))
  48
  49 /* Properties */
  50 enum
  51 {
  52   PROP_0,
  53   PROP_SPREADSHEET
  54 };
  55
  56
  57 static void
  58 psppire_spreadsheet_model_set_property (GObject * object,
  59                                         guint prop_id,
  60                                         const GValue * value,
  61                                         GParamSpec * pspec)
  62 {
  63   PsppireSpreadsheetModel *spreadsheetModel =
  64     PSPPIRE_SPREADSHEET_MODEL (object);
  65
  66   switch (prop_id)
  67     {
  68     case PROP_SPREADSHEET:
  69       spreadsheetModel->spreadsheet = g_value_get_pointer (value);
  70       spreadsheet_ref (spreadsheetModel->spreadsheet);
  71       break;
  72     default:
  73       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
  74       break;
  75     };
  76 }
  77
  78
  79 static void
  80 psppire_spreadsheet_model_dispose (GObject * object)
  81 {
  82   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (object);
  83
  84   if (!spreadsheetModel->dispose_has_run)
  85     {
  86       spreadsheet_unref (spreadsheetModel->spreadsheet);
  87
  88       spreadsheetModel->dispose_has_run = TRUE;
  89     }
  90 }
  91
  92 static void
  93 psppire_spreadsheet_model_finalize (GObject * object)
  94 {
  95   //  PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (object);
  96 }
  97
  98 static void
  99 psppire_spreadsheet_model_class_init (PsppireSpreadsheetModelClass * class)
 100 {
 101   GObjectClass *object_class = G_OBJECT_CLASS (class);
 102
 103   GParamSpec *spreadsheet_spec = g_param_spec_pointer ("spreadsheet",
 104                                                        "Spreadsheet",
 105                                                        "The spreadsheet that this model represents",
 106                                                        G_PARAM_CONSTRUCT_ONLY
 107                                                        | G_PARAM_WRITABLE);
 108
 109   parent_class = g_type_class_peek_parent (class);
 110
 111
 112   object_class->set_property = psppire_spreadsheet_model_set_property;
 113
 114   g_object_class_install_property (object_class,
 115                                    PROP_SPREADSHEET, spreadsheet_spec);
 116
 117   object_class->finalize = psppire_spreadsheet_model_finalize;
 118   object_class->dispose = psppire_spreadsheet_model_dispose;
 119 }
 120
 121
 122 static void
 123 psppire_spreadsheet_model_init (PsppireSpreadsheetModel * spreadsheetModel)
 124 {
 125   spreadsheetModel->dispose_has_run = FALSE;
 126   spreadsheetModel->stamp = g_random_int ();
 127 }
 128
 129
 130 GtkTreeModel *
 131 psppire_spreadsheet_model_new (struct spreadsheet *sp)
 132 {
 133   return g_object_new (psppire_spreadsheet_model_get_type (),
 134                        "spreadsheet", sp, NULL);
 135 }
 136
 137
 138 \f
 139
 140 static gint
 141 tree_model_n_columns (GtkTreeModel * model)
 142 {
 143   return PSPPIRE_SPREADSHEET_MODEL_N_COLS;
 144 }
 145
 146 static GtkTreeModelFlags
 147 tree_model_get_flags (GtkTreeModel * model)
 148 {
 149   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model),
 150                         (GtkTreeModelFlags) 0);
 151
 152   return GTK_TREE_MODEL_LIST_ONLY;
 153 }
 154
 155 static GType
 156 tree_model_column_type (GtkTreeModel * model, gint index)
 157 {
 158   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model), (GType) 0);
 159   g_return_val_if_fail (index < PSPPIRE_SPREADSHEET_MODEL_N_COLS, (GType) 0);
 160
 161   return G_TYPE_STRING;
 162 }
 163
 164
 165 static gboolean
 166 tree_model_get_iter (GtkTreeModel * model, GtkTreeIter * iter,
 167                      GtkTreePath * path)
 168 {
 169   PsppireSpreadsheetModel *spreadsheetModel =
 170     PSPPIRE_SPREADSHEET_MODEL (model);
 171   gint *indices, depth;
 172   gint n;
 173
 174   g_return_val_if_fail (path, FALSE);
 175
 176   depth = gtk_tree_path_get_depth (path);
 177
 178   g_return_val_if_fail (depth == 1, FALSE);
 179
 180   indices = gtk_tree_path_get_indices (path);
 181
 182   n = indices[0];
 183
 184   iter->stamp = spreadsheetModel->stamp;
 185   iter->user_data = (gpointer) (intptr_t) n;
 186
 187   return TRUE;
 188 }
 189
 190 static gboolean
 191 tree_model_iter_next (GtkTreeModel *model, GtkTreeIter *iter)
 192 {
 193   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (model);
 194   g_assert (iter);
 195   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, FALSE);
 196
 197   if ((intptr_t) iter->user_data >= spreadsheetModel->spreadsheet->n_sheets - 1)
 198     {
 199       iter->user_data = NULL;
 200       iter->stamp = 0;
 201       return FALSE;
 202     }
 203
 204   iter->user_data = (void *) ((intptr_t)(iter->user_data) + 1);
 205
 206   return TRUE;
 207 }
 208
 209
 210 static void
 211 tree_model_get_value (GtkTreeModel * model, GtkTreeIter * iter,
 212                       gint column, GValue * value)
 213 {
 214   PsppireSpreadsheetModel *spreadsheetModel =
 215     PSPPIRE_SPREADSHEET_MODEL (model);
 216   g_return_if_fail (column < PSPPIRE_SPREADSHEET_MODEL_N_COLS);
 217   g_return_if_fail (iter->stamp == spreadsheetModel->stamp);
 218
 219   g_value_init (value, G_TYPE_STRING);
 220   switch (column)
 221     {
 222     case PSPPIRE_SPREADSHEET_MODEL_COL_NAME:
 223       {
 224         const char *x =
 225           spreadsheet_get_sheet_name (spreadsheetModel->spreadsheet,
 226                                       (intptr_t) iter->user_data);
 227
 228         g_value_set_string (value, x);
 229       }
 230       break;
 231     case PSPPIRE_SPREADSHEET_MODEL_COL_RANGE:
 232       {
 233         char *x =
 234           spreadsheet_get_sheet_range (spreadsheetModel->spreadsheet,
 235                                        (intptr_t) iter->user_data);
 236
 237         g_value_set_string (value, x ? x : _("(empty)"));
 238         g_free (x);
 239       }
 240       break;
 241     default:
 242       g_error ("%s:%d Invalid column in spreadsheet model",
 243                __FILE__, __LINE__);
 244       break;
 245     }
 246 }
 247
 248 static gboolean
 249 tree_model_nth_child (GtkTreeModel * model, GtkTreeIter * iter,
 250                       GtkTreeIter * parent, gint n)
 251 {
 252   PsppireSpreadsheetModel *spreadsheetModel =
 253     PSPPIRE_SPREADSHEET_MODEL (model);
 254
 255   if (parent)
 256     return FALSE;
 257
 258   if (n >= spreadsheetModel->spreadsheet->n_sheets)
 259     return FALSE;
 260
 261   iter->stamp = spreadsheetModel->stamp;
 262   iter->user_data = (gpointer) (intptr_t) n;
 263
 264   return TRUE;
 265 }
 266
 267 static gint
 268 tree_model_n_children (GtkTreeModel * model, GtkTreeIter * iter)
 269 {
 270   PsppireSpreadsheetModel *spreadsheetModel =
 271     PSPPIRE_SPREADSHEET_MODEL (model);
 272
 273   if (iter == NULL)
 274     return spreadsheetModel->spreadsheet->n_sheets;
 275
 276   return 0;
 277 }
 278
 279 static gboolean
 280 tree_model_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter)
 281 {
 282   return FALSE;
 283 }
 284
 285 static GtkTreePath *
 286 tree_model_get_path (GtkTreeModel * model, GtkTreeIter * iter)
 287 {
 288   PsppireSpreadsheetModel *spreadsheetModel =
 289     PSPPIRE_SPREADSHEET_MODEL (model);
 290   GtkTreePath *path;
 291   gint index = (intptr_t) iter->user_data;
 292
 293   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, NULL);
 294
 295   path = gtk_tree_path_new ();
 296
 297   gtk_tree_path_append_index (path, index);
 298
 299   return path;
 300 }
 301
 302
 303 static gboolean
 304 tree_model_children (GtkTreeModel *model, GtkTreeIter *iter, GtkTreeIter *parent)
 305 {
 306   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (model);
 307
 308   if (parent != NULL)
 309     return FALSE;
 310
 311   iter->stamp = spreadsheetModel->stamp;
 312   iter->user_data = 0;
 313
 314   return TRUE;
 315 }
 316
 317
 318
 319 static void
 320 spreadsheet_tree_model_init (GtkTreeModelIface * iface)
 321 {
 322   iface->get_flags = tree_model_get_flags;
 323   iface->get_n_columns = tree_model_n_columns;
 324   iface->get_column_type = tree_model_column_type;
 325   iface->get_iter = tree_model_get_iter;
 326   iface->iter_next = tree_model_iter_next;
 327   iface->get_value = tree_model_get_value;
 328
 329   iface->iter_children = tree_model_children;
 330   iface->iter_parent = NULL;
 331
 332   iface->get_path = tree_model_get_path;
 333   iface->iter_has_child = tree_model_iter_has_child;
 334   iface->iter_n_children = tree_model_n_children;
 335   iface->iter_nth_child = tree_model_nth_child;
 336 }