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 "gtkfilechooserutils.h"
  24 #include "gtkfilechooser.h"
  25 #include "gtkfilesystem.h"
  26 #include "gtktypebuiltins.h"
  27 #include "gtkintl.h"
  28 #include "gtkalias.h"
  29
  30 static gboolean       delegate_set_current_folder     (GtkFileChooser    *chooser,
  31                                                        GFile             *file,
  32                                                        GError           **error);
  33 static GFile *        delegate_get_current_folder     (GtkFileChooser    *chooser);
  34 static void           delegate_set_current_name       (GtkFileChooser    *chooser,
  35                                                        const gchar       *name);
  36 static gboolean       delegate_select_file            (GtkFileChooser    *chooser,
  37                                                        GFile             *file,
  38                                                        GError           **error);
  39 static void           delegate_unselect_file          (GtkFileChooser    *chooser,
  40                                                        GFile             *file);
  41 static void           delegate_select_all             (GtkFileChooser    *chooser);
  42 static void           delegate_unselect_all           (GtkFileChooser    *chooser);
  43 static GSList *       delegate_get_files              (GtkFileChooser    *chooser);
  44 static GFile *        delegate_get_preview_file       (GtkFileChooser    *chooser);
  45 static GtkFileSystem *delegate_get_file_system        (GtkFileChooser    *chooser);
  46 static void           delegate_add_filter             (GtkFileChooser    *chooser,
  47                                                        GtkFileFilter     *filter);
  48 static void           delegate_remove_filter          (GtkFileChooser    *chooser,
  49                                                        GtkFileFilter     *filter);
  50 static GSList *       delegate_list_filters           (GtkFileChooser    *chooser);
  51 static gboolean       delegate_add_shortcut_folder    (GtkFileChooser    *chooser,
  52                                                        GFile             *file,
  53                                                        GError           **error);
  54 static gboolean       delegate_remove_shortcut_folder (GtkFileChooser    *chooser,
  55                                                        GFile             *file,
  56                                                        GError           **error);
  57 static GSList *       delegate_list_shortcut_folders  (GtkFileChooser    *chooser);
  58 static void           delegate_notify                 (GObject           *object,
  59                                                        GParamSpec        *pspec,
  60                                                        gpointer           data);
  61 static void           delegate_current_folder_changed (GtkFileChooser    *chooser,
  62                                                        gpointer           data);
  63 static void           delegate_selection_changed      (GtkFileChooser    *chooser,
  64                                                        gpointer           data);
  65 static void           delegate_update_preview         (GtkFileChooser    *chooser,
  66                                                        gpointer           data);
  67 static void           delegate_file_activated         (GtkFileChooser    *chooser,
  68                                                        gpointer           data);
  69
  70 static GtkFileChooserConfirmation delegate_confirm_overwrite (GtkFileChooser    *chooser,
  71                                                               gpointer           data);
  72
  73 /**
  74  * _gtk_file_chooser_install_properties:
  75  * @klass: the class structure for a type deriving from #GObject
  76  *
  77  * Installs the necessary properties for a class implementing
  78  * #GtkFileChooser. A #GtkParamSpecOverride property is installed
  79  * for each property, using the values from the #GtkFileChooserProp
  80  * enumeration. The caller must make sure itself that the enumeration
  81  * values don't collide with some other property values they
  82  * are using.
  83  **/
  84 void
  85 _gtk_file_chooser_install_properties (GObjectClass *klass)
  86 {
  87   g_object_class_override_property (klass,
  88                                     GTK_FILE_CHOOSER_PROP_ACTION,
  89                                     "action");
  90   g_object_class_override_property (klass,
  91                                     GTK_FILE_CHOOSER_PROP_EXTRA_WIDGET,
  92                                     "extra-widget");
  93   g_object_class_override_property (klass,
  94                                     GTK_FILE_CHOOSER_PROP_FILE_SYSTEM_BACKEND,
  95                                     "file-system-backend");
  96   g_object_class_override_property (klass,
  97                                     GTK_FILE_CHOOSER_PROP_FILTER,
  98                                     "filter");
  99   g_object_class_override_property (klass,
 100                                     GTK_FILE_CHOOSER_PROP_LOCAL_ONLY,
 101                                     "local-only");
 102   g_object_class_override_property (klass,
 103                                     GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET,
 104                                     "preview-widget");
 105   g_object_class_override_property (klass,
 106                                     GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET_ACTIVE,
 107                                     "preview-widget-active");
 108   g_object_class_override_property (klass,
 109                                     GTK_FILE_CHOOSER_PROP_USE_PREVIEW_LABEL,
 110                                     "use-preview-label");
 111   g_object_class_override_property (klass,
 112                                     GTK_FILE_CHOOSER_PROP_SELECT_MULTIPLE,
 113                                     "select-multiple");
 114   g_object_class_override_property (klass,
 115                                     GTK_FILE_CHOOSER_PROP_SHOW_HIDDEN,
 116                                     "show-hidden");
 117   g_object_class_override_property (klass,
 118                                     GTK_FILE_CHOOSER_PROP_DO_OVERWRITE_CONFIRMATION,
 119                                     "do-overwrite-confirmation");
 120 }
 121
 122 /**
 123  * _gtk_file_chooser_delegate_iface_init:
 124  * @iface: a #GtkFileChoserIface structure
 125  *
 126  * An interface-initialization function for use in cases where
 127  * an object is simply delegating the methods, signals of
 128  * the #GtkFileChooser interface to another object.
 129  * _gtk_file_chooser_set_delegate() must be called on each
 130  * instance of the object so that the delegate object can
 131  * be found.
 132  **/
 133 void
 134 _gtk_file_chooser_delegate_iface_init (GtkFileChooserIface *iface)
 135 {
 136   iface->set_current_folder = delegate_set_current_folder;
 137   iface->get_current_folder = delegate_get_current_folder;
 138   iface->set_current_name = delegate_set_current_name;
 139   iface->select_file = delegate_select_file;
 140   iface->unselect_file = delegate_unselect_file;
 141   iface->select_all = delegate_select_all;
 142   iface->unselect_all = delegate_unselect_all;
 143   iface->get_files = delegate_get_files;
 144   iface->get_preview_file = delegate_get_preview_file;
 145   iface->get_file_system = delegate_get_file_system;
 146   iface->add_filter = delegate_add_filter;
 147   iface->remove_filter = delegate_remove_filter;
 148   iface->list_filters = delegate_list_filters;
 149   iface->add_shortcut_folder = delegate_add_shortcut_folder;
 150   iface->remove_shortcut_folder = delegate_remove_shortcut_folder;
 151   iface->list_shortcut_folders = delegate_list_shortcut_folders;
 152 }
 153
 154 /**
 155  * _gtk_file_chooser_set_delegate:
 156  * @receiver: a #GObject implementing #GtkFileChooser
 157  * @delegate: another #GObject implementing #GtkFileChooser
 158  *
 159  * Establishes that calls on @receiver for #GtkFileChooser
 160  * methods should be delegated to @delegate, and that
 161  * #GtkFileChooser signals emitted on @delegate should be
 162  * forwarded to @receiver. Must be used in conjunction with
 163  * _gtk_file_chooser_delegate_iface_init().
 164  **/
 165 void
 166 _gtk_file_chooser_set_delegate (GtkFileChooser *receiver,
 167                                 GtkFileChooser *delegate)
 168 {
 169   g_return_if_fail (GTK_IS_FILE_CHOOSER (receiver));
 170   g_return_if_fail (GTK_IS_FILE_CHOOSER (delegate));
 171
 172   g_object_set_data (G_OBJECT (receiver), I_("gtk-file-chooser-delegate"), delegate);
 173   g_signal_connect (delegate, "notify",
 174                     G_CALLBACK (delegate_notify), receiver);
 175   g_signal_connect (delegate, "current-folder-changed",
 176                     G_CALLBACK (delegate_current_folder_changed), receiver);
 177   g_signal_connect (delegate, "selection-changed",
 178                     G_CALLBACK (delegate_selection_changed), receiver);
 179   g_signal_connect (delegate, "update-preview",
 180                     G_CALLBACK (delegate_update_preview), receiver);
 181   g_signal_connect (delegate, "file-activated",
 182                     G_CALLBACK (delegate_file_activated), receiver);
 183   g_signal_connect (delegate, "confirm-overwrite",
 184                     G_CALLBACK (delegate_confirm_overwrite), receiver);
 185 }
 186
 187 GQuark
 188 _gtk_file_chooser_delegate_get_quark (void)
 189 {
 190   static GQuark quark = 0;
 191
 192   if (G_UNLIKELY (quark == 0))
 193     quark = g_quark_from_static_string ("gtk-file-chooser-delegate");
 194
 195   return quark;
 196 }
 197
 198 static GtkFileChooser *
 199 get_delegate (GtkFileChooser *receiver)
 200 {
 201   return g_object_get_qdata (G_OBJECT (receiver),
 202                              GTK_FILE_CHOOSER_DELEGATE_QUARK);
 203 }
 204
 205 static gboolean
 206 delegate_select_file (GtkFileChooser    *chooser,
 207                       GFile             *file,
 208                       GError           **error)
 209 {
 210   return _gtk_file_chooser_select_file (get_delegate (chooser), file, error);
 211 }
 212
 213 static void
 214 delegate_unselect_file (GtkFileChooser *chooser,
 215                         GFile          *file)
 216 {
 217   _gtk_file_chooser_unselect_file (get_delegate (chooser), file);
 218 }
 219
 220 static void
 221 delegate_select_all (GtkFileChooser *chooser)
 222 {
 223   gtk_file_chooser_select_all (get_delegate (chooser));
 224 }
 225
 226 static void
 227 delegate_unselect_all (GtkFileChooser *chooser)
 228 {
 229   gtk_file_chooser_unselect_all (get_delegate (chooser));
 230 }
 231
 232 static GSList *
 233 delegate_get_files (GtkFileChooser *chooser)
 234 {
 235   return _gtk_file_chooser_get_files (get_delegate (chooser));
 236 }
 237
 238 static GFile *
 239 delegate_get_preview_file (GtkFileChooser *chooser)
 240 {
 241   return _gtk_file_chooser_get_preview_file (get_delegate (chooser));
 242 }
 243
 244 static GtkFileSystem *
 245 delegate_get_file_system (GtkFileChooser *chooser)
 246 {
 247   return _gtk_file_chooser_get_file_system (get_delegate (chooser));
 248 }
 249
 250 static void
 251 delegate_add_filter (GtkFileChooser *chooser,
 252                      GtkFileFilter  *filter)
 253 {
 254   gtk_file_chooser_add_filter (get_delegate (chooser), filter);
 255 }
 256
 257 static void
 258 delegate_remove_filter (GtkFileChooser *chooser,
 259                         GtkFileFilter  *filter)
 260 {
 261   gtk_file_chooser_remove_filter (get_delegate (chooser), filter);
 262 }
 263
 264 static GSList *
 265 delegate_list_filters (GtkFileChooser *chooser)
 266 {
 267   return gtk_file_chooser_list_filters (get_delegate (chooser));
 268 }
 269
 270 static gboolean
 271 delegate_add_shortcut_folder (GtkFileChooser  *chooser,
 272                               GFile           *file,
 273                               GError         **error)
 274 {
 275   return _gtk_file_chooser_add_shortcut_folder (get_delegate (chooser), file, error);
 276 }
 277
 278 static gboolean
 279 delegate_remove_shortcut_folder (GtkFileChooser  *chooser,
 280                                  GFile           *file,
 281                                  GError         **error)
 282 {
 283   return _gtk_file_chooser_remove_shortcut_folder (get_delegate (chooser), file, error);
 284 }
 285
 286 static GSList *
 287 delegate_list_shortcut_folders (GtkFileChooser *chooser)
 288 {
 289   return gtk_file_chooser_list_shortcut_folders (get_delegate (chooser));
 290 }
 291
 292 static gboolean
 293 delegate_set_current_folder (GtkFileChooser  *chooser,
 294                              GFile           *file,
 295                              GError         **error)
 296 {
 297   return _gtk_file_chooser_set_current_folder_file (get_delegate (chooser), file, error);
 298 }
 299
 300 static GFile *
 301 delegate_get_current_folder (GtkFileChooser *chooser)
 302 {
 303   return _gtk_file_chooser_get_current_folder_file (get_delegate (chooser));
 304 }
 305
 306 static void
 307 delegate_set_current_name (GtkFileChooser *chooser,
 308                            const gchar    *name)
 309 {
 310   gtk_file_chooser_set_current_name (get_delegate (chooser), name);
 311 }
 312
 313 static void
 314 delegate_notify (GObject    *object,
 315                  GParamSpec *pspec,
 316                  gpointer    data)
 317 {
 318   gpointer iface;
 319
 320   iface = g_type_interface_peek (g_type_class_peek (G_OBJECT_TYPE (object)),
 321                                  gtk_file_chooser_get_type ());
 322   if (g_object_interface_find_property (iface, pspec->name))
 323     g_object_notify (data, pspec->name);
 324 }
 325
 326 static void
 327 delegate_selection_changed (GtkFileChooser *chooser,
 328                             gpointer        data)
 329 {
 330   g_signal_emit_by_name (data, "selection-changed");
 331 }
 332
 333 static void
 334 delegate_current_folder_changed (GtkFileChooser *chooser,
 335                                  gpointer        data)
 336 {
 337   g_signal_emit_by_name (data, "current-folder-changed");
 338 }
 339
 340 static void
 341 delegate_update_preview (GtkFileChooser    *chooser,
 342                          gpointer           data)
 343 {
 344   g_signal_emit_by_name (data, "update-preview");
 345 }
 346
 347 static void
 348 delegate_file_activated (GtkFileChooser    *chooser,
 349                          gpointer           data)
 350 {
 351   g_signal_emit_by_name (data, "file-activated");
 352 }
 353
 354 static GtkFileChooserConfirmation
 355 delegate_confirm_overwrite (GtkFileChooser    *chooser,
 356                             gpointer           data)
 357 {
 358   GtkFileChooserConfirmation conf;
 359
 360   g_signal_emit_by_name (data, "confirm-overwrite", &conf);
 361   return conf;
 362 }