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