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       spreadsheet_ref (spreadsheetModel->spreadsheet);
 110       break;
 111     default:
 112       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 113       break;
 114     };
 115 }
 116
 117
 118 static void
 119 psppire_spreadsheet_model_dispose (GObject * object)
 120 {
 121   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (object);
 122
 123   if (!spreadsheetModel->dispose_has_run)
 124     {
 125       spreadsheet_unref (spreadsheetModel->spreadsheet);
 126
 127       spreadsheetModel->dispose_has_run = TRUE;
 128     }
 129 }
 130
 131 static void
 132 psppire_spreadsheet_model_finalize (GObject * object)
 133 {
 134   //  PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (object);
 135 }
 136
 137 static void
 138 psppire_spreadsheet_model_class_init (PsppireSpreadsheetModelClass * class)
 139 {
 140   GObjectClass *object_class;
 141
 142   GParamSpec *spreadsheet_spec = g_param_spec_pointer ("spreadsheet",
 143                                                        "Spreadsheet",
 144                                                        "The spreadsheet that this model represents",
 145                                                        G_PARAM_CONSTRUCT_ONLY
 146                                                        | G_PARAM_WRITABLE);
 147
 148   parent_class = g_type_class_peek_parent (class);
 149   object_class = (GObjectClass *) class;
 150
 151   object_class->set_property = psppire_spreadsheet_model_set_property;
 152
 153   g_object_class_install_property (object_class,
 154                                    PROP_SPREADSHEET, spreadsheet_spec);
 155
 156   object_class->finalize = psppire_spreadsheet_model_finalize;
 157   object_class->dispose = psppire_spreadsheet_model_dispose;
 158 }
 159
 160
 161 static void
 162 psppire_spreadsheet_model_init (PsppireSpreadsheetModel * spreadsheetModel)
 163 {
 164   spreadsheetModel->dispose_has_run = FALSE;
 165   spreadsheetModel->stamp = g_random_int ();
 166 }
 167
 168
 169 GtkTreeModel *
 170 psppire_spreadsheet_model_new (struct spreadsheet *sp)
 171 {
 172   return g_object_new (psppire_spreadsheet_model_get_type (),
 173                        "spreadsheet", sp, NULL);
 174 }
 175
 176
 177 \f
 178
 179 static gint
 180 tree_model_n_columns (GtkTreeModel * model)
 181 {
 182   return PSPPIRE_SPREADSHEET_MODEL_N_COLS;
 183 }
 184
 185 static GtkTreeModelFlags
 186 tree_model_get_flags (GtkTreeModel * model)
 187 {
 188   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model),
 189                         (GtkTreeModelFlags) 0);
 190
 191   return GTK_TREE_MODEL_LIST_ONLY;
 192 }
 193
 194 static GType
 195 tree_model_column_type (GtkTreeModel * model, gint index)
 196 {
 197   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model), (GType) 0);
 198   g_return_val_if_fail (index < PSPPIRE_SPREADSHEET_MODEL_N_COLS, (GType) 0);
 199
 200   return G_TYPE_STRING;
 201 }
 202
 203
 204 static gboolean
 205 tree_model_get_iter (GtkTreeModel * model, GtkTreeIter * iter,
 206                      GtkTreePath * path)
 207 {
 208   PsppireSpreadsheetModel *spreadsheetModel =
 209     PSPPIRE_SPREADSHEET_MODEL (model);
 210   gint *indices, depth;
 211   gint n;
 212
 213   g_return_val_if_fail (path, FALSE);
 214
 215   depth = gtk_tree_path_get_depth (path);
 216
 217   g_return_val_if_fail (depth == 1, FALSE);
 218
 219   indices = gtk_tree_path_get_indices (path);
 220
 221   n = indices[0];
 222
 223   iter->stamp = spreadsheetModel->stamp;
 224   iter->user_data = (gpointer) (intptr_t) n;
 225
 226   return TRUE;
 227 }
 228
 229 static gboolean
 230 tree_model_iter_next (GtkTreeModel *model, GtkTreeIter *iter)
 231 {
 232   PsppireSpreadsheetModel *spreadsheetModel =
 233     PSPPIRE_SPREADSHEET_MODEL (model);
 234   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, FALSE);
 235
 236   if (iter == NULL)
 237     return FALSE;
 238
 239   if ((intptr_t) iter->user_data >= spreadsheetModel->spreadsheet->n_sheets - 1)
 240     {
 241       iter->user_data = NULL;
 242       iter->stamp = 0;
 243       return FALSE;
 244     }
 245
 246   iter->user_data++;
 247
 248   return TRUE;
 249 }
 250
 251
 252 static void
 253 tree_model_get_value (GtkTreeModel * model, GtkTreeIter * iter,
 254                       gint column, GValue * value)
 255 {
 256   PsppireSpreadsheetModel *spreadsheetModel =
 257     PSPPIRE_SPREADSHEET_MODEL (model);
 258   g_return_if_fail (column < PSPPIRE_SPREADSHEET_MODEL_N_COLS);
 259   g_return_if_fail (iter->stamp == spreadsheetModel->stamp);
 260
 261   g_value_init (value, G_TYPE_STRING);
 262   switch (column)
 263     {
 264     case PSPPIRE_SPREADSHEET_MODEL_COL_NAME:
 265       {
 266         const char *x =
 267           spreadsheet_get_sheet_name (spreadsheetModel->spreadsheet,
 268                                       (intptr_t) iter->user_data);
 269
 270         g_value_set_string (value, x);
 271       }
 272       break;
 273     case PSPPIRE_SPREADSHEET_MODEL_COL_RANGE:
 274       {
 275         char *x =
 276           spreadsheet_get_sheet_range (spreadsheetModel->spreadsheet,
 277                                        (intptr_t) iter->user_data);
 278
 279         g_value_set_string (value, x ? x : _("(empty)"));
 280         g_free (x);
 281       }
 282       break;
 283     default:
 284       g_error ("%s:%d Invalid column in spreadsheet model",
 285                __FILE__, __LINE__);
 286       break;
 287     }
 288 }
 289
 290 static gboolean
 291 tree_model_nth_child (GtkTreeModel * model, GtkTreeIter * iter,
 292                       GtkTreeIter * parent, gint n)
 293 {
 294   PsppireSpreadsheetModel *spreadsheetModel =
 295     PSPPIRE_SPREADSHEET_MODEL (model);
 296
 297   if (parent)
 298     return FALSE;
 299
 300   if (n >= spreadsheetModel->spreadsheet->n_sheets)
 301     return FALSE;
 302
 303   iter->stamp = spreadsheetModel->stamp;
 304   iter->user_data = (gpointer) (intptr_t) n;
 305
 306   return TRUE;
 307 }
 308
 309 static gint
 310 tree_model_n_children (GtkTreeModel * model, GtkTreeIter * iter)
 311 {
 312   PsppireSpreadsheetModel *spreadsheetModel =
 313     PSPPIRE_SPREADSHEET_MODEL (model);
 314
 315   if (iter == NULL)
 316     return spreadsheetModel->spreadsheet->n_sheets;
 317
 318   return 0;
 319 }
 320
 321 static gboolean
 322 tree_model_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter)
 323 {
 324   return FALSE;
 325 }
 326
 327 static GtkTreePath *
 328 tree_model_get_path (GtkTreeModel * model, GtkTreeIter * iter)
 329 {
 330   PsppireSpreadsheetModel *spreadsheetModel =
 331     PSPPIRE_SPREADSHEET_MODEL (model);
 332   GtkTreePath *path;
 333   gint index = (intptr_t) iter->user_data;
 334
 335   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, NULL);
 336
 337   path = gtk_tree_path_new ();
 338
 339   gtk_tree_path_append_index (path, index);
 340
 341   return path;
 342 }
 343
 344
 345 static gboolean
 346 tree_model_children (GtkTreeModel *model, GtkTreeIter *iter, GtkTreeIter *parent)
 347 {
 348   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (model);
 349
 350   if (parent != NULL)
 351     return FALSE;
 352
 353   iter->stamp = spreadsheetModel->stamp;
 354   iter->user_data = 0;
 355
 356   return TRUE;
 357 }
 358
 359
 360
 361 static void
 362 spreadsheet_tree_model_init (GtkTreeModelIface * iface)
 363 {
 364   iface->get_flags = tree_model_get_flags;
 365   iface->get_n_columns = tree_model_n_columns;
 366   iface->get_column_type = tree_model_column_type;
 367   iface->get_iter = tree_model_get_iter;
 368   iface->iter_next = tree_model_iter_next;
 369   iface->get_value = tree_model_get_value;
 370
 371   iface->iter_children = tree_model_children;
 372   iface->iter_parent = NULL;
 373
 374   iface->get_path = tree_model_get_path;
 375   iface->iter_has_child = tree_model_iter_has_child;
 376   iface->iter_n_children = tree_model_n_children;
 377   iface->iter_nth_child = tree_model_nth_child;
 378 }