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  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 <gettext.h>
  27 #define _(msgid) gettext (msgid)
  28 #define N_(msgid) msgid
  29
  30
  31 #include "psppire-spreadsheet-model.h"
  32 #include "data/spreadsheet-reader.h"
  33
  34
  35 static void psppire_spreadsheet_model_init (PsppireSpreadsheetModel *
  36                                             spreadsheetModel);
  37 static void psppire_spreadsheet_model_class_init (PsppireSpreadsheetModelClass
  38                                                   * class);
  39
  40 static void psppire_spreadsheet_model_finalize (GObject * object);
  41 static void psppire_spreadsheet_model_dispose (GObject * object);
  42
  43 static GObjectClass *parent_class = NULL;
  44
  45
  46 static void spreadsheet_tree_model_init (GtkTreeModelIface * iface);
  47
  48
  49 GType
  50 psppire_spreadsheet_model_get_type (void)
  51 {
  52   static GType object_type = 0;
  53
  54   if (!object_type)
  55     {
  56       static const GTypeInfo spreadsheet_model_info = {
  57         sizeof (PsppireSpreadsheetModelClass),
  58         NULL,                   /* base_init */
  59         NULL,                   /* base_finalize */
  60         (GClassInitFunc) psppire_spreadsheet_model_class_init,
  61         NULL,                   /* class_finalize */
  62         NULL,                   /* class_data */
  63         sizeof (PsppireSpreadsheetModel),
  64         0,
  65         (GInstanceInitFunc) psppire_spreadsheet_model_init,
  66       };
  67
  68       static const GInterfaceInfo tree_model_info = {
  69         (GInterfaceInitFunc) spreadsheet_tree_model_init,
  70         NULL,
  71         NULL
  72       };
  73
  74       object_type = g_type_register_static (G_TYPE_OBJECT,
  75                                             "PsppireSpreadsheetModel",
  76                                             &spreadsheet_model_info, 0);
  77
  78       g_type_add_interface_static (object_type, GTK_TYPE_TREE_MODEL,
  79                                    &tree_model_info);
  80     }
  81
  82   return object_type;
  83 }
  84
  85
  86 /* Properties */
  87 enum
  88 {
  89   PROP_0,
  90   PROP_SPREADSHEET
  91 };
  92
  93
  94 static void
  95 psppire_spreadsheet_model_set_property (GObject * object,
  96                                         guint prop_id,
  97                                         const GValue * value,
  98                                         GParamSpec * pspec)
  99 {
 100   PsppireSpreadsheetModel *spreadsheetModel =
 101     PSPPIRE_SPREADSHEET_MODEL (object);
 102
 103   switch (prop_id)
 104     {
 105     case PROP_SPREADSHEET:
 106       spreadsheetModel->spreadsheet = g_value_get_pointer (value);
 107       break;
 108     default:
 109       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 110       break;
 111     };
 112 }
 113
 114
 115 static void
 116 psppire_spreadsheet_model_dispose (GObject * object)
 117 {
 118 }
 119
 120 static void
 121 psppire_spreadsheet_model_finalize (GObject * object)
 122 {
 123   //  PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (object);
 124 }
 125
 126 static void
 127 psppire_spreadsheet_model_class_init (PsppireSpreadsheetModelClass * class)
 128 {
 129   GObjectClass *object_class;
 130
 131   GParamSpec *spreadsheet_spec = g_param_spec_pointer ("spreadsheet",
 132                                                        "Spreadsheet",
 133                                                        "The spreadsheet that this model represents",
 134                                                        G_PARAM_CONSTRUCT_ONLY
 135                                                        | G_PARAM_WRITABLE);
 136
 137   parent_class = g_type_class_peek_parent (class);
 138   object_class = (GObjectClass *) class;
 139
 140   object_class->set_property = psppire_spreadsheet_model_set_property;
 141
 142   g_object_class_install_property (object_class,
 143                                    PROP_SPREADSHEET, spreadsheet_spec);
 144
 145   object_class->finalize = psppire_spreadsheet_model_finalize;
 146   object_class->dispose = psppire_spreadsheet_model_dispose;
 147 }
 148
 149
 150 static void
 151 psppire_spreadsheet_model_init (PsppireSpreadsheetModel * spreadsheetModel)
 152 {
 153   spreadsheetModel->dispose_has_run = FALSE;
 154   spreadsheetModel->stamp = g_random_int ();
 155 }
 156
 157
 158 GtkTreeModel *
 159 psppire_spreadsheet_model_new (struct spreadsheet *sp)
 160 {
 161   return g_object_new (psppire_spreadsheet_model_get_type (),
 162                        "spreadsheet", sp, NULL);
 163 }
 164
 165
 166 \f
 167
 168 static gint
 169 tree_model_n_columns (GtkTreeModel * model)
 170 {
 171   return PSPPIRE_SPREADSHEET_MODEL_N_COLS;
 172 }
 173
 174 static GtkTreeModelFlags
 175 tree_model_get_flags (GtkTreeModel * model)
 176 {
 177   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model),
 178                         (GtkTreeModelFlags) 0);
 179
 180   return GTK_TREE_MODEL_LIST_ONLY;
 181 }
 182
 183 static GType
 184 tree_model_column_type (GtkTreeModel * model, gint index)
 185 {
 186   g_return_val_if_fail (PSPPIRE_IS_SPREADSHEET_MODEL (model), (GType) 0);
 187   g_return_val_if_fail (index < PSPPIRE_SPREADSHEET_MODEL_N_COLS, (GType) 0);
 188
 189   return G_TYPE_STRING;
 190 }
 191
 192
 193 static gboolean
 194 tree_model_get_iter (GtkTreeModel * model, GtkTreeIter * iter,
 195                      GtkTreePath * path)
 196 {
 197   PsppireSpreadsheetModel *spreadsheetModel =
 198     PSPPIRE_SPREADSHEET_MODEL (model);
 199   gint *indices, depth;
 200   gint n;
 201
 202   g_return_val_if_fail (path, FALSE);
 203
 204   depth = gtk_tree_path_get_depth (path);
 205
 206   g_return_val_if_fail (depth == 1, FALSE);
 207
 208   indices = gtk_tree_path_get_indices (path);
 209
 210   n = indices[0];
 211
 212   iter->stamp = spreadsheetModel->stamp;
 213   iter->user_data = (gpointer) n;
 214
 215   return TRUE;
 216 }
 217
 218 static gboolean
 219 tree_model_iter_next (GtkTreeModel *model, GtkTreeIter *iter)
 220 {
 221   PsppireSpreadsheetModel *spreadsheetModel =
 222     PSPPIRE_SPREADSHEET_MODEL (model);
 223   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, FALSE);
 224
 225   if (iter == NULL)
 226     return FALSE;
 227
 228   if ((gint) iter->user_data >= spreadsheetModel->spreadsheet->n_sheets - 1)
 229     {
 230       iter->user_data = NULL;
 231       iter->stamp = 0;
 232       return FALSE;
 233     }
 234
 235   iter->user_data++;
 236
 237   return TRUE;
 238 }
 239
 240
 241 static void
 242 tree_model_get_value (GtkTreeModel * model, GtkTreeIter * iter,
 243                       gint column, GValue * value)
 244 {
 245   PsppireSpreadsheetModel *spreadsheetModel =
 246     PSPPIRE_SPREADSHEET_MODEL (model);
 247   g_return_if_fail (column < PSPPIRE_SPREADSHEET_MODEL_N_COLS);
 248   g_return_if_fail (iter->stamp == spreadsheetModel->stamp);
 249
 250   g_value_init (value, G_TYPE_STRING);
 251   switch (column)
 252     {
 253     case PSPPIRE_SPREADSHEET_MODEL_COL_NAME:
 254       {
 255         const char *x =
 256           spreadsheet_get_sheet_name (spreadsheetModel->spreadsheet,
 257                                    (gint) iter->user_data);
 258
 259         g_value_set_string (value, x);
 260       }
 261       break;
 262     case PSPPIRE_SPREADSHEET_MODEL_COL_RANGE:
 263       {
 264         char *x =
 265           spreadsheet_get_sheet_range (spreadsheetModel->spreadsheet,
 266                                     (gint) iter->user_data);
 267
 268         g_value_set_string (value, x ? x : _("(empty)"));
 269         g_free (x);
 270       }
 271       break;
 272     default:
 273       g_error ("%s:%d Invalid column in spreadsheet model",
 274                __FILE__, __LINE__);
 275       break;
 276     }
 277 }
 278
 279 static gboolean
 280 tree_model_nth_child (GtkTreeModel * model, GtkTreeIter * iter,
 281                       GtkTreeIter * parent, gint n)
 282 {
 283   PsppireSpreadsheetModel *spreadsheetModel =
 284     PSPPIRE_SPREADSHEET_MODEL (model);
 285
 286   if (parent)
 287     return FALSE;
 288
 289   if (n >= spreadsheetModel->spreadsheet->n_sheets)
 290     return FALSE;
 291
 292   iter->stamp = spreadsheetModel->stamp;
 293   iter->user_data = (gpointer) n;
 294
 295   return TRUE;
 296 }
 297
 298 static gint
 299 tree_model_n_children (GtkTreeModel * model, GtkTreeIter * iter)
 300 {
 301   PsppireSpreadsheetModel *spreadsheetModel =
 302     PSPPIRE_SPREADSHEET_MODEL (model);
 303
 304   if (iter == NULL)
 305     return spreadsheetModel->spreadsheet->n_sheets;
 306
 307   return 0;
 308 }
 309
 310 static gboolean
 311 tree_model_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter)
 312 {
 313   return FALSE;
 314 }
 315
 316 static GtkTreePath *
 317 tree_model_get_path (GtkTreeModel * model, GtkTreeIter * iter)
 318 {
 319   PsppireSpreadsheetModel *spreadsheetModel =
 320     PSPPIRE_SPREADSHEET_MODEL (model);
 321   GtkTreePath *path;
 322   gint index = (gint) iter->user_data;
 323
 324   g_return_val_if_fail (iter->stamp == spreadsheetModel->stamp, NULL);
 325
 326   path = gtk_tree_path_new ();
 327
 328   gtk_tree_path_append_index (path, index);
 329
 330   return path;
 331 }
 332
 333
 334 static gboolean
 335 tree_model_children (GtkTreeModel *model, GtkTreeIter *iter, GtkTreeIter *parent)
 336 {
 337   PsppireSpreadsheetModel *spreadsheetModel = PSPPIRE_SPREADSHEET_MODEL (model);
 338
 339   if (parent != NULL)
 340     return FALSE;
 341
 342   iter->stamp = spreadsheetModel->stamp;
 343   iter->user_data = 0;
 344
 345   return TRUE;
 346 }
 347
 348
 349
 350 static void
 351 spreadsheet_tree_model_init (GtkTreeModelIface * iface)
 352 {
 353   iface->get_flags = tree_model_get_flags;
 354   iface->get_n_columns = tree_model_n_columns;
 355   iface->get_column_type = tree_model_column_type;
 356   iface->get_iter = tree_model_get_iter;
 357   iface->iter_next = tree_model_iter_next;
 358   iface->get_value = tree_model_get_value;
 359
 360   iface->iter_children = tree_model_children;
 361   iface->iter_parent = NULL;
 362
 363   iface->get_path = tree_model_get_path;
 364   iface->iter_has_child = tree_model_iter_has_child;
 365   iface->iter_n_children = tree_model_n_children;
 366   iface->iter_nth_child = tree_model_nth_child;
 367 }