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
  37 static void psppire_spreadsheet_model_init (PsppireSpreadsheetModel *
  38                                             spreadsheetModel);
  39 static void psppire_spreadsheet_model_class_init (PsppireSpreadsheetModelClass
  40                                                   * class);
  41
  42 static void psppire_spreadsheet_model_finalize (GObject * object);
  43 static void psppire_spreadsheet_model_dispose (GObject * object);
  44
  45 static GObjectClass *parent_class = NULL;
  46
  47
  48 static void spreadsheet_tree_model_init (GtkTreeModelIface * iface);
  49
  50
  51 GType
  52 psppire_spreadsheet_model_get_type (void)
  53 {
  54   static GType object_type = 0;
  55
  56   if (!object_type)
  57     {
  58       static const GTypeInfo spreadsheet_model_info = {
  59         sizeof (PsppireSpreadsheetModelClass),
  60         NULL,                   /* base_init */
  61         NULL,                   /* base_finalize */
  62         (GClassInitFunc) psppire_spreadsheet_model_class_init,
  63         NULL,                   /* class_finalize */
  64         NULL,                   /* class_data */
  65         sizeof (PsppireSpreadsheetModel),
  66         0,
  67         (GInstanceInitFunc) psppire_spreadsheet_model_init,
  68       };
  69
  70       static const GInterfaceInfo tree_model_info = {
  71         (GInterfaceInitFunc) spreadsheet_tree_model_init,
  72         NULL,
  73         NULL
  74       };
  75
  76       object_type = g_type_register_static (G_TYPE_OBJECT,
  77                                             "PsppireSpreadsheetModel",
  78                                             &spreadsheet_model_info, 0);
  79
  80       g_type_add_interface_static (object_type, GTK_TYPE_TREE_MODEL,
  81                                    &tree_model_info);
  82     }
  83
  84   return object_type;
  85 }
  86
  87
  88 /* Properties */
  89 enum
  90 {
  91   PROP_0,
  92   PROP_SPREADSHEET
  93 };
  94
  95
  96 static void
  97 psppire_spreadsheet_model_set_property (GObject * object,
  98                                         guint prop_id,
  99                                         const GValue * value,
 100                                         GParamSpec * pspec)
 101 {
 102   PsppireSpreadsheetModel *spreadsheetModel =
 103     PSPPIRE_SPREADSHEET_MODEL (object);
 104
 105   switch (prop_id)
 106     {
 107     case PROP_SPREADSHEET:
 108       spreadsheetModel->spreadsheet = g_value_get_pointer (value);
 109       break;
 110     default:
 111       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 112       break;
 113     };
 114 }
 115
 116
 117 static void
 118 psppire_spreadsheet_model_dispose (GObject * object)
 119 {
 120 }
 121
 122 static void
 123 psppire_spreadsheet_model_finalize (GObject * object)
 124 {
 125   //  PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (object);
 126 }
 127
 128 static void
 129 psppire_spreadsheet_model_class_init (PsppireSpreadsheetModelClass * class)
 130 {
 131   GObjectClass *object_class;
 132
 133   GParamSpec *spreadsheet_spec = g_param_spec_pointer ("spreadsheet",
 134                                                        "Spreadsheet",
 135                                                        "The spreadsheet that this model represents",
 136                                                        G_PARAM_CONSTRUCT_ONLY
 137                                                        | G_PARAM_WRITABLE);
 138
 139   parent_class = g_type_class_peek_parent (class);
 140   object_class = (GObjectClass *) class;
 141
 142   object_class->set_property = psppire_spreadsheet_model_set_property;
 143
 144   g_object_class_install_property (object_class,
 145                                    PROP_SPREADSHEET, spreadsheet_spec);
 146
 147   object_class->finalize = psppire_spreadsheet_model_finalize;
 148   object_class->dispose = psppire_spreadsheet_model_dispose;
 149 }
 150
 151
 152 static void
 153 psppire_spreadsheet_model_init (PsppireSpreadsheetModel * spreadsheetModel)
 154 {
 155   spreadsheetModel->dispose_has_run = FALSE;
 156   spreadsheetModel->stamp = g_random_int ();
 157 }
 158
 159
 160 GtkTreeModel *
 161 psppire_spreadsheet_model_new (struct spreadsheet *sp)
 162 {
 163   return g_object_new (psppire_spreadsheet_model_get_type (),
 164                        "spreadsheet", sp, NULL);
 165 }
 166
 167
 168 \f
 169
 170 static gint
 171 tree_model_n_columns (GtkTreeModel * model)
 172 {
 173   return PSPPIRE_SPREADSHEET_MODEL_N_COLS;
 174 }
 175
 176 static GtkTreeModelFlags
 177 tree_model_get_flags (GtkTreeModel * model)
 178 {
 179   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model),
 180                         (GtkTreeModelFlags) 0);
 181
 182   return GTK_TREE_MODEL_LIST_ONLY;
 183 }
 184
 185 static GType
 186 tree_model_column_type (GtkTreeModel * model, gint index)
 187 {
 188   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model), (GType) 0);
 189   g_return_val_if_fail (index < PSPPIRE_SPREADSHEET_MODEL_N_COLS, (GType) 0);
 190
 191   return G_TYPE_STRING;
 192 }
 193
 194
 195 static gboolean
 196 tree_model_get_iter (GtkTreeModel * model, GtkTreeIter * iter,
 197                      GtkTreePath * path)
 198 {
 199   PsppireSpreadsheetModel *spreadsheetModel =
 200     PSPPIRE_SPREADSHEET_MODEL (model);
 201   gint *indices, depth;
 202   gint n;
 203
 204   g_return_val_if_fail (path, FALSE);
 205
 206   depth = gtk_tree_path_get_depth (path);
 207
 208   g_return_val_if_fail (depth == 1, FALSE);
 209
 210   indices = gtk_tree_path_get_indices (path);
 211
 212   n = indices[0];
 213
 214   iter->stamp = spreadsheetModel->stamp;
 215   iter->user_data = (gpointer) (intptr_t) n;
 216
 217   return TRUE;
 218 }
 219
 220 static gboolean
 221 tree_model_iter_next (GtkTreeModel *model, GtkTreeIter *iter)
 222 {
 223   PsppireSpreadsheetModel *spreadsheetModel =
 224     PSPPIRE_SPREADSHEET_MODEL (model);
 225   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, FALSE);
 226
 227   if (iter == NULL)
 228     return FALSE;
 229
 230   if ((intptr_t) iter->user_data >= spreadsheetModel->spreadsheet->n_sheets - 1)
 231     {
 232       iter->user_data = NULL;
 233       iter->stamp = 0;
 234       return FALSE;
 235     }
 236
 237   iter->user_data++;
 238
 239   return TRUE;
 240 }
 241
 242
 243 static void
 244 tree_model_get_value (GtkTreeModel * model, GtkTreeIter * iter,
 245                       gint column, GValue * value)
 246 {
 247   PsppireSpreadsheetModel *spreadsheetModel =
 248     PSPPIRE_SPREADSHEET_MODEL (model);
 249   g_return_if_fail (column < PSPPIRE_SPREADSHEET_MODEL_N_COLS);
 250   g_return_if_fail (iter->stamp == spreadsheetModel->stamp);
 251
 252   g_value_init (value, G_TYPE_STRING);
 253   switch (column)
 254     {
 255     case PSPPIRE_SPREADSHEET_MODEL_COL_NAME:
 256       {
 257         const char *x =
 258           spreadsheet_get_sheet_name (spreadsheetModel->spreadsheet,
 259                                       (intptr_t) iter->user_data);
 260
 261         g_value_set_string (value, x);
 262       }
 263       break;
 264     case PSPPIRE_SPREADSHEET_MODEL_COL_RANGE:
 265       {
 266         char *x =
 267           spreadsheet_get_sheet_range (spreadsheetModel->spreadsheet,
 268                                        (intptr_t) iter->user_data);
 269
 270         g_value_set_string (value, x ? x : _("(empty)"));
 271         g_free (x);
 272       }
 273       break;
 274     default:
 275       g_error ("%s:%d Invalid column in spreadsheet model",
 276                __FILE__, __LINE__);
 277       break;
 278     }
 279 }
 280
 281 static gboolean
 282 tree_model_nth_child (GtkTreeModel * model, GtkTreeIter * iter,
 283                       GtkTreeIter * parent, gint n)
 284 {
 285   PsppireSpreadsheetModel *spreadsheetModel =
 286     PSPPIRE_SPREADSHEET_MODEL (model);
 287
 288   if (parent)
 289     return FALSE;
 290
 291   if (n >= spreadsheetModel->spreadsheet->n_sheets)
 292     return FALSE;
 293
 294   iter->stamp = spreadsheetModel->stamp;
 295   iter->user_data = (gpointer) (intptr_t) n;
 296
 297   return TRUE;
 298 }
 299
 300 static gint
 301 tree_model_n_children (GtkTreeModel * model, GtkTreeIter * iter)
 302 {
 303   PsppireSpreadsheetModel *spreadsheetModel =
 304     PSPPIRE_SPREADSHEET_MODEL (model);
 305
 306   if (iter == NULL)
 307     return spreadsheetModel->spreadsheet->n_sheets;
 308
 309   return 0;
 310 }
 311
 312 static gboolean
 313 tree_model_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter)
 314 {
 315   return FALSE;
 316 }
 317
 318 static GtkTreePath *
 319 tree_model_get_path (GtkTreeModel * model, GtkTreeIter * iter)
 320 {
 321   PsppireSpreadsheetModel *spreadsheetModel =
 322     PSPPIRE_SPREADSHEET_MODEL (model);
 323   GtkTreePath *path;
 324   gint index = (intptr_t) iter->user_data;
 325
 326   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, NULL);
 327
 328   path = gtk_tree_path_new ();
 329
 330   gtk_tree_path_append_index (path, index);
 331
 332   return path;
 333 }
 334
 335
 336 static gboolean
 337 tree_model_children (GtkTreeModel *model, GtkTreeIter *iter, GtkTreeIter *parent)
 338 {
 339   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (model);
 340
 341   if (parent != NULL)
 342     return FALSE;
 343
 344   iter->stamp = spreadsheetModel->stamp;
 345   iter->user_data = 0;
 346
 347   return TRUE;
 348 }
 349
 350
 351
 352 static void
 353 spreadsheet_tree_model_init (GtkTreeModelIface * iface)
 354 {
 355   iface->get_flags = tree_model_get_flags;
 356   iface->get_n_columns = tree_model_n_columns;
 357   iface->get_column_type = tree_model_column_type;
 358   iface->get_iter = tree_model_get_iter;
 359   iface->iter_next = tree_model_iter_next;
 360   iface->get_value = tree_model_get_value;
 361
 362   iface->iter_children = tree_model_children;
 363   iface->iter_parent = NULL;
 364
 365   iface->get_path = tree_model_get_path;
 366   iface->iter_has_child = tree_model_iter_has_child;
 367   iface->iter_n_children = tree_model_n_children;
 368   iface->iter_nth_child = tree_model_nth_child;
 369 }