Pileus Git - ~andy/gtk/blob - gtk/gtkfilechooserutils.c

   1 /* GTK - The GIMP Toolkit
   2  * gtkfilechooserutils.c: Private utility functions useful for
   3  *                        implementing a GtkFileChooser interface
   4  * Copyright (C) 2003, Red Hat, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include <config.h>
  23 #include "gtkalias.h"
  24 #include "gtkfilechooserutils.h"
  25 #include "gtkfilechooser.h"
  26 #include "gtkfilesystem.h"
  27 #include "gtktypebuiltins.h"
  28
  29 static gboolean       delegate_set_current_folder     (GtkFileChooser    *chooser,
  30                                                        const GtkFilePath *path,
  31                                                        GError           **error);
  32 static GtkFilePath *  delegate_get_current_folder     (GtkFileChooser    *chooser);
  33 static void           delegate_set_current_name       (GtkFileChooser    *chooser,
  34                                                        const gchar       *name);
  35 static gboolean       delegate_select_path            (GtkFileChooser    *chooser,
  36                                                        const GtkFilePath *path,
  37                                                        GError           **error);
  38 static void           delegate_unselect_path          (GtkFileChooser    *chooser,
  39                                                        const GtkFilePath *path);
  40 static void           delegate_select_all             (GtkFileChooser    *chooser);
  41 static void           delegate_unselect_all           (GtkFileChooser    *chooser);
  42 static GSList *       delegate_get_paths              (GtkFileChooser    *chooser);
  43 static GtkFilePath *  delegate_get_preview_path       (GtkFileChooser    *chooser);
  44 static GtkFileSystem *delegate_get_file_system        (GtkFileChooser    *chooser);
  45 static void           delegate_add_filter             (GtkFileChooser    *chooser,
  46                                                        GtkFileFilter     *filter);
  47 static void           delegate_remove_filter          (GtkFileChooser    *chooser,
  48                                                        GtkFileFilter     *filter);
  49 static GSList *       delegate_list_filters           (GtkFileChooser    *chooser);
  50 static gboolean       delegate_add_shortcut_folder    (GtkFileChooser    *chooser,
  51                                                        const GtkFilePath *path,
  52                                                        GError           **error);
  53 static gboolean       delegate_remove_shortcut_folder (GtkFileChooser    *chooser,
  54                                                        const GtkFilePath *path,
  55                                                        GError           **error);
  56 static GSList *       delegate_list_shortcut_folders  (GtkFileChooser    *chooser);
  57 static void           delegate_notify                 (GObject           *object,
  58                                                        GParamSpec        *pspec,
  59                                                        gpointer           data);
  60 static void           delegate_current_folder_changed (GtkFileChooser    *chooser,
  61                                                        gpointer           data);
  62 static void           delegate_selection_changed      (GtkFileChooser    *chooser,
  63                                                        gpointer           data);
  64 static void           delegate_update_preview         (GtkFileChooser    *chooser,
  65                                                        gpointer           data);
  66 static void           delegate_file_activated         (GtkFileChooser    *chooser,
  67                                                        gpointer           data);
  68
  69 /**
  70  * _gtk_file_chooser_install_properties:
  71  * @klass: the class structure for a type deriving from #GObject
  72  *
  73  * Installs the necessary properties for a class implementing
  74  * #GtkFileChooser. A #GtkParamSpecOverride property is installed
  75  * for each property, using the values from the #GtkFileChooserProp
  76  * enumeration. The caller must make sure itself that the enumeration
  77  * values don't collide with some other property values they
  78  * are using.
  79  **/
  80 void
  81 _gtk_file_chooser_install_properties (GObjectClass *klass)
  82 {
  83   g_object_class_override_property (klass,
  84                                     GTK_FILE_CHOOSER_PROP_ACTION,
  85                                     "action");
  86   g_object_class_override_property (klass,
  87                                     GTK_FILE_CHOOSER_PROP_EXTRA_WIDGET,
  88                                     "extra-widget");
  89   g_object_class_override_property (klass,
  90                                     GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND,
  91                                     "file-system-backend");
  92   g_object_class_override_property (klass,
  93                                     GTK_FILE_CHOOSER_PROP_FILTER,
  94                                     "filter");
  95   g_object_class_override_property (klass,
  96                                     GTK_FILE_CHOOSER_PROP_LOCAL_ONLY,
  97                                     "local-only");
  98   g_object_class_override_property (klass,
  99                                     GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET,
 100                                     "preview-widget");
 101   g_object_class_override_property (klass,
 102                                     GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET_ACTIVE,
 103                                     "preview-widget-active");
 104   g_object_class_override_property (klass,
 105                                     GTK_FILE_CHOOSER_PROP_USE_PREVIEW_LABEL,
 106                                     "use-preview-label");
 107   g_object_class_override_property (klass,
 108                                     GTK_FILE_CHOOSER_PROP_SELECT_MULTIPLE,
 109                                     "select-multiple");
 110   g_object_class_override_property (klass,
 111                                     GTK_FILE_CHOOSER_PROP_SHOW_HIDDEN,
 112                                     "show-hidden");
 113 }
 114
 115 /**
 116  * _gtk_file_chooser_delegate_iface_init:
 117  * @iface: a #GtkFileChoserIface structure
 118  *
 119  * An interface-initialization function for use in cases where
 120  * an object is simply delegating the methods, signals of
 121  * the #GtkFileChooser interface to another object.
 122  * _gtk_file_chooser_set_delegate() must be called on each
 123  * instance of the object so that the delegate object can
 124  * be found.
 125  **/
 126 void
 127 _gtk_file_chooser_delegate_iface_init (GtkFileChooserIface *iface)
 128 {
 129   iface->set_current_folder = delegate_set_current_folder;
 130   iface->get_current_folder = delegate_get_current_folder;
 131   iface->set_current_name = delegate_set_current_name;
 132   iface->select_path = delegate_select_path;
 133   iface->unselect_path = delegate_unselect_path;
 134   iface->select_all = delegate_select_all;
 135   iface->unselect_all = delegate_unselect_all;
 136   iface->get_paths = delegate_get_paths;
 137   iface->get_preview_path = delegate_get_preview_path;
 138   iface->get_file_system = delegate_get_file_system;
 139   iface->add_filter = delegate_add_filter;
 140   iface->remove_filter = delegate_remove_filter;
 141   iface->list_filters = delegate_list_filters;
 142   iface->add_shortcut_folder = delegate_add_shortcut_folder;
 143   iface->remove_shortcut_folder = delegate_remove_shortcut_folder;
 144   iface->list_shortcut_folders = delegate_list_shortcut_folders;
 145 }
 146
 147 /**
 148  * _gtk_file_chooser_set_delegate:
 149  * @receiver: a #GObject implementing #GtkFileChooser
 150  * @delegate: another #GObject implementing #GtkFileChooser
 151  *
 152  * Establishes that calls on @receiver for #GtkFileChooser
 153  * methods should be delegated to @delegate, and that
 154  * #GtkFileChooser signals emitted on @delegate should be
 155  * forwarded to @receiver. Must be used in conjunction with
 156  * _gtk_file_chooser_delegate_iface_init().
 157  **/
 158 void
 159 _gtk_file_chooser_set_delegate (GtkFileChooser *receiver,
 160                                 GtkFileChooser *delegate)
 161 {
 162   g_return_if_fail (GTK_IS_FILE_CHOOSER (receiver));
 163   g_return_if_fail (GTK_IS_FILE_CHOOSER (delegate));
 164
 165   g_object_set_data (G_OBJECT (receiver), "gtk-file-chooser-delegate", delegate);
 166   g_signal_connect (delegate, "notify",
 167                     G_CALLBACK (delegate_notify), receiver);
 168   g_signal_connect (delegate, "current-folder-changed",
 169                     G_CALLBACK (delegate_current_folder_changed), receiver);
 170   g_signal_connect (delegate, "selection-changed",
 171                     G_CALLBACK (delegate_selection_changed), receiver);
 172   g_signal_connect (delegate, "update-preview",
 173                     G_CALLBACK (delegate_update_preview), receiver);
 174   g_signal_connect (delegate, "file-activated",
 175                     G_CALLBACK (delegate_file_activated), receiver);
 176 }
 177
 178 GQuark
 179 _gtk_file_chooser_delegate_get_quark (void)
 180 {
 181   static GQuark quark = 0;
 182
 183   if (G_UNLIKELY (quark == 0))
 184     quark = g_quark_from_static_string ("gtk-file-chooser-delegate");
 185
 186   return quark;
 187 }
 188
 189 static GtkFileChooser *
 190 get_delegate (GtkFileChooser *receiver)
 191 {
 192   return g_object_get_qdata (G_OBJECT (receiver),
 193                              GTK_FILE_CHOOSER_DELEGATE_QUARK);
 194 }
 195
 196 static gboolean
 197 delegate_select_path (GtkFileChooser    *chooser,
 198                       const GtkFilePath *path,
 199                       GError           **error)
 200 {
 201   return _gtk_file_chooser_select_path (get_delegate (chooser), path, error);
 202 }
 203
 204 static void
 205 delegate_unselect_path (GtkFileChooser    *chooser,
 206                         const GtkFilePath *path)
 207 {
 208   _gtk_file_chooser_unselect_path (get_delegate (chooser), path);
 209 }
 210
 211 static void
 212 delegate_select_all (GtkFileChooser *chooser)
 213 {
 214   gtk_file_chooser_select_all (get_delegate (chooser));
 215 }
 216
 217 static void
 218 delegate_unselect_all (GtkFileChooser *chooser)
 219 {
 220   gtk_file_chooser_unselect_all (get_delegate (chooser));
 221 }
 222
 223 static GSList *
 224 delegate_get_paths (GtkFileChooser *chooser)
 225 {
 226   return _gtk_file_chooser_get_paths (get_delegate (chooser));
 227 }
 228
 229 static GtkFilePath *
 230 delegate_get_preview_path (GtkFileChooser *chooser)
 231 {
 232   return _gtk_file_chooser_get_preview_path (get_delegate (chooser));
 233 }
 234
 235 static GtkFileSystem *
 236 delegate_get_file_system (GtkFileChooser *chooser)
 237 {
 238   return _gtk_file_chooser_get_file_system (get_delegate (chooser));
 239 }
 240
 241 static void
 242 delegate_add_filter (GtkFileChooser *chooser,
 243                      GtkFileFilter  *filter)
 244 {
 245   gtk_file_chooser_add_filter (get_delegate (chooser), filter);
 246 }
 247
 248 static void
 249 delegate_remove_filter (GtkFileChooser *chooser,
 250                         GtkFileFilter  *filter)
 251 {
 252   gtk_file_chooser_remove_filter (get_delegate (chooser), filter);
 253 }
 254
 255 static GSList *
 256 delegate_list_filters (GtkFileChooser *chooser)
 257 {
 258   return gtk_file_chooser_list_filters (get_delegate (chooser));
 259 }
 260
 261 static gboolean
 262 delegate_add_shortcut_folder (GtkFileChooser    *chooser,
 263                               const GtkFilePath *path,
 264                               GError           **error)
 265 {
 266   return _gtk_file_chooser_add_shortcut_folder (get_delegate (chooser), path, error);
 267 }
 268
 269 static gboolean
 270 delegate_remove_shortcut_folder (GtkFileChooser    *chooser,
 271                                  const GtkFilePath *path,
 272                                  GError           **error)
 273 {
 274   return _gtk_file_chooser_remove_shortcut_folder (get_delegate (chooser), path, error);
 275 }
 276
 277 static GSList *
 278 delegate_list_shortcut_folders (GtkFileChooser *chooser)
 279 {
 280   return gtk_file_chooser_list_shortcut_folders (get_delegate (chooser));
 281 }
 282
 283 static gboolean
 284 delegate_set_current_folder (GtkFileChooser    *chooser,
 285                              const GtkFilePath *path,
 286                              GError           **error)
 287 {
 288   return _gtk_file_chooser_set_current_folder_path (get_delegate (chooser), path, error);
 289 }
 290
 291 static GtkFilePath *
 292 delegate_get_current_folder (GtkFileChooser *chooser)
 293 {
 294   return _gtk_file_chooser_get_current_folder_path (get_delegate (chooser));
 295 }
 296
 297 static void
 298 delegate_set_current_name (GtkFileChooser *chooser,
 299                            const gchar    *name)
 300 {
 301   gtk_file_chooser_set_current_name (get_delegate (chooser), name);
 302 }
 303
 304 static void
 305 delegate_notify (GObject    *object,
 306                  GParamSpec *pspec,
 307                  gpointer    data)
 308 {
 309   gpointer iface;
 310
 311   iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)),
 312                                  gtk_file_chooser_get_type ());
 313   if (g_object_interface_find_property (iface, pspec->name))
 314     g_object_notify (data, pspec->name);
 315 }
 316
 317 static void
 318 delegate_selection_changed (GtkFileChooser *chooser,
 319                             gpointer        data)
 320 {
 321   g_signal_emit_by_name (data, "selection-changed");
 322 }
 323
 324 static void
 325 delegate_current_folder_changed (GtkFileChooser *chooser,
 326                                  gpointer        data)
 327 {
 328   g_signal_emit_by_name (data, "current-folder-changed");
 329 }
 330
 331 static void
 332 delegate_update_preview (GtkFileChooser    *chooser,
 333                          gpointer           data)
 334 {
 335   g_signal_emit_by_name (data, "update-preview");
 336 }
 337
 338 static void
 339 delegate_file_activated (GtkFileChooser    *chooser,
 340                          gpointer           data)
 341 {
 342   g_signal_emit_by_name (data, "file-activated");
 343 }