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