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 static GtkFileChooser *
 179 get_delegate (GtkFileChooser *receiver)
 180 {
 181   return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-delegate");
 182 }
 183
 184 static gboolean
 185 delegate_select_path (GtkFileChooser    *chooser,
 186                       const GtkFilePath *path,
 187                       GError           **error)
 188 {
 189   return _gtk_file_chooser_select_path (get_delegate (chooser), path, error);
 190 }
 191
 192 static void
 193 delegate_unselect_path (GtkFileChooser    *chooser,
 194                         const GtkFilePath *path)
 195 {
 196   _gtk_file_chooser_unselect_path (get_delegate (chooser), path);
 197 }
 198
 199 static void
 200 delegate_select_all (GtkFileChooser *chooser)
 201 {
 202   gtk_file_chooser_select_all (get_delegate (chooser));
 203 }
 204
 205 static void
 206 delegate_unselect_all (GtkFileChooser *chooser)
 207 {
 208   gtk_file_chooser_unselect_all (get_delegate (chooser));
 209 }
 210
 211 static GSList *
 212 delegate_get_paths (GtkFileChooser *chooser)
 213 {
 214   return _gtk_file_chooser_get_paths (get_delegate (chooser));
 215 }
 216
 217 static GtkFilePath *
 218 delegate_get_preview_path (GtkFileChooser *chooser)
 219 {
 220   return _gtk_file_chooser_get_preview_path (get_delegate (chooser));
 221 }
 222
 223 static GtkFileSystem *
 224 delegate_get_file_system (GtkFileChooser *chooser)
 225 {
 226   return _gtk_file_chooser_get_file_system (get_delegate (chooser));
 227 }
 228
 229 static void
 230 delegate_add_filter (GtkFileChooser *chooser,
 231                      GtkFileFilter  *filter)
 232 {
 233   gtk_file_chooser_add_filter (get_delegate (chooser), filter);
 234 }
 235
 236 static void
 237 delegate_remove_filter (GtkFileChooser *chooser,
 238                         GtkFileFilter  *filter)
 239 {
 240   gtk_file_chooser_remove_filter (get_delegate (chooser), filter);
 241 }
 242
 243 static GSList *
 244 delegate_list_filters (GtkFileChooser *chooser)
 245 {
 246   return gtk_file_chooser_list_filters (get_delegate (chooser));
 247 }
 248
 249 static gboolean
 250 delegate_add_shortcut_folder (GtkFileChooser    *chooser,
 251                               const GtkFilePath *path,
 252                               GError           **error)
 253 {
 254   return _gtk_file_chooser_add_shortcut_folder (get_delegate (chooser), path, error);
 255 }
 256
 257 static gboolean
 258 delegate_remove_shortcut_folder (GtkFileChooser    *chooser,
 259                                  const GtkFilePath *path,
 260                                  GError           **error)
 261 {
 262   return _gtk_file_chooser_remove_shortcut_folder (get_delegate (chooser), path, error);
 263 }
 264
 265 static GSList *
 266 delegate_list_shortcut_folders (GtkFileChooser *chooser)
 267 {
 268   return gtk_file_chooser_list_shortcut_folders (get_delegate (chooser));
 269 }
 270
 271 static gboolean
 272 delegate_set_current_folder (GtkFileChooser    *chooser,
 273                              const GtkFilePath *path,
 274                              GError           **error)
 275 {
 276   return _gtk_file_chooser_set_current_folder_path (get_delegate (chooser), path, error);
 277 }
 278
 279 static GtkFilePath *
 280 delegate_get_current_folder (GtkFileChooser *chooser)
 281 {
 282   return _gtk_file_chooser_get_current_folder_path (get_delegate (chooser));
 283 }
 284
 285 static void
 286 delegate_set_current_name (GtkFileChooser *chooser,
 287                            const gchar    *name)
 288 {
 289   gtk_file_chooser_set_current_name (get_delegate (chooser), name);
 290 }
 291
 292 static void
 293 delegate_notify (GObject    *object,
 294                  GParamSpec *pspec,
 295                  gpointer    data)
 296 {
 297   gpointer iface;
 298
 299   iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)),
 300                                  gtk_file_chooser_get_type ());
 301   if (g_object_interface_find_property (iface, pspec->name))
 302     g_object_notify (data, pspec->name);
 303 }
 304
 305 static void
 306 delegate_selection_changed (GtkFileChooser *chooser,
 307                             gpointer        data)
 308 {
 309   g_signal_emit_by_name (data, "selection-changed");
 310 }
 311
 312 static void
 313 delegate_current_folder_changed (GtkFileChooser *chooser,
 314                                  gpointer        data)
 315 {
 316   g_signal_emit_by_name (data, "current-folder-changed");
 317 }
 318
 319 static void
 320 delegate_update_preview (GtkFileChooser    *chooser,
 321                          gpointer           data)
 322 {
 323   g_signal_emit_by_name (data, "update-preview");
 324 }
 325
 326 static void
 327 delegate_file_activated (GtkFileChooser    *chooser,
 328                          gpointer           data)
 329 {
 330   g_signal_emit_by_name (data, "file-activated");
 331 }