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 "gtkfilechooserutils.h"
  23 #include "gtkfilechooser.h"
  24 #include "gtkfilechooserenums.h"
  25 #include "gtkfilesystem.h"
  26
  27 static void           delegate_set_current_folder     (GtkFileChooser    *chooser,
  28                                                        const GtkFilePath *path);
  29 static GtkFilePath *  delegate_get_current_folder     (GtkFileChooser    *chooser);
  30 static void           delegate_set_current_name       (GtkFileChooser    *chooser,
  31                                                        const gchar       *name);
  32 static void           delegate_select_path            (GtkFileChooser    *chooser,
  33                                                        const GtkFilePath *path);
  34 static void           delegate_unselect_path          (GtkFileChooser    *chooser,
  35                                                        const GtkFilePath *path);
  36 static void           delegate_select_all             (GtkFileChooser    *chooser);
  37 static void           delegate_unselect_all           (GtkFileChooser    *chooser);
  38 static GSList *       delegate_get_paths              (GtkFileChooser    *chooser);
  39 static GtkFilePath *  delegate_get_preview_path       (GtkFileChooser    *chooser);
  40 static GtkFileSystem *delegate_get_file_system        (GtkFileChooser    *chooser);
  41 static void           delegate_add_filter             (GtkFileChooser    *chooser,
  42                                                        GtkFileFilter     *filter);
  43 static void           delegate_remove_filter          (GtkFileChooser    *chooser,
  44                                                        GtkFileFilter     *filter);
  45 static GSList *       delegate_list_filters           (GtkFileChooser    *chooser);
  46 static void           delegate_notify                 (GObject           *object,
  47                                                        GParamSpec        *pspec,
  48                                                        gpointer           data);
  49 static void           delegate_current_folder_changed (GtkFileChooser    *chooser,
  50                                                        gpointer           data);
  51 static void           delegate_selection_changed      (GtkFileChooser    *chooser,
  52                                                        gpointer           data);
  53 static void           delegate_update_preview         (GtkFileChooser    *chooser,
  54                                                        gpointer           data);
  55
  56 /**
  57  * _gtk_file_chooser_install_properties:
  58  * @klass: the class structure for a type deriving from #GObject
  59  *
  60  * Installs the necessary properties for a class implementing
  61  * #GtkFileChooser. A #GtkParamSpecOverride property is installed
  62  * for each property, using the values from the #GtkFileChooserProp
  63  * enumeration. The caller must make sure itself that the enumeration
  64  * values don't collide with some other property values they
  65  * are using.
  66  **/
  67 void
  68 _gtk_file_chooser_install_properties (GObjectClass *klass)
  69 {
  70   g_object_class_install_property (klass,
  71                                    GTK_FILE_CHOOSER_PROP_ACTION,
  72                                    g_param_spec_override ("action",
  73                                                           GTK_TYPE_FILE_CHOOSER_ACTION,
  74                                                           G_PARAM_READWRITE));
  75   g_object_class_install_property (klass,
  76                                    GTK_FILE_CHOOSER_PROP_FILE_SYSTEM,
  77                                    g_param_spec_override ("file-system",
  78                                                           GTK_TYPE_FILE_SYSTEM,
  79                                                           G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
  80   g_object_class_install_property (klass,
  81                                    GTK_FILE_CHOOSER_PROP_FILTER,
  82                                    g_param_spec_override ("filter",
  83                                                           GTK_TYPE_FILE_FILTER,
  84                                                           G_PARAM_READWRITE));
  85   g_object_class_install_property (klass,
  86                                    GTK_FILE_CHOOSER_PROP_FOLDER_MODE,
  87                                    g_param_spec_override ("folder-mode",
  88                                                           G_TYPE_BOOLEAN,
  89                                                           G_PARAM_READWRITE));
  90   g_object_class_install_property (klass,
  91                                    GTK_FILE_CHOOSER_PROP_LOCAL_ONLY,
  92                                    g_param_spec_override ("local-only",
  93                                                           G_TYPE_BOOLEAN,
  94                                                           G_PARAM_READWRITE));
  95   g_object_class_install_property (klass,
  96                                    GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET,
  97                                    g_param_spec_override ("preview-widget",
  98                                                           GTK_TYPE_WIDGET,
  99                                                           G_PARAM_READWRITE));
 100   g_object_class_install_property (klass,
 101                                    GTK_FILE_CHOOSER_PROP_PREVIEW_WIDGET_ACTIVE,
 102                                    g_param_spec_override ("preview-widget-active",
 103                                                           G_TYPE_BOOLEAN,
 104                                                           G_PARAM_READWRITE));
 105   g_object_class_install_property (klass,
 106                                    GTK_FILE_CHOOSER_PROP_SELECT_MULTIPLE,
 107                                    g_param_spec_override ("select-multiple",
 108                                                           G_TYPE_BOOLEAN,
 109                                                           G_PARAM_READWRITE));
 110   g_object_class_install_property (klass,
 111                                    GTK_FILE_CHOOSER_PROP_SHOW_HIDDEN,
 112                                    g_param_spec_override ("show-hidden",
 113                                                           G_TYPE_BOOLEAN,
 114                                                           G_PARAM_READWRITE));
 115 }
 116
 117 /**
 118  * _gtk_file_chooser_delegate_iface_init:
 119  * @iface: a #GtkFileChoserIface structure
 120  *
 121  * An interface-initialization function for use in cases where
 122  * an object is simply delegating the methods, signals of
 123  * the #GtkFileChooser interface to another object.
 124  * _gtk_file_chooser_set_delegate() must be called on each
 125  * instance of the object so that the delegate object can
 126  * be found.
 127  **/
 128 void
 129 _gtk_file_chooser_delegate_iface_init (GtkFileChooserIface *iface)
 130 {
 131   iface->set_current_folder = delegate_set_current_folder;
 132   iface->get_current_folder = delegate_get_current_folder;
 133   iface->set_current_name = delegate_set_current_name;
 134   iface->select_path = delegate_select_path;
 135   iface->unselect_path = delegate_unselect_path;
 136   iface->select_all = delegate_select_all;
 137   iface->unselect_all = delegate_unselect_all;
 138   iface->get_paths = delegate_get_paths;
 139   iface->get_preview_path = delegate_get_preview_path;
 140   iface->get_file_system = delegate_get_file_system;
 141   iface->add_filter = delegate_add_filter;
 142   iface->remove_filter = delegate_remove_filter;
 143   iface->list_filters = delegate_list_filters;
 144 }
 145
 146 /**
 147  * _gtk_file_chooser_set_delegate:
 148  * @receiver: a GOobject implementing #GtkFileChooser
 149  * @delegate: another GObject implementing #GtkFileChooser
 150  *
 151  * Establishes that calls on @receiver for #GtkFileChooser
 152  * methods should be delegated to @delegate, and that
 153  * #GtkFileChooser signals emitted on @delegate should be
 154  * forwarded to @receiver. Must be used in confunction with
 155  * _gtk_file_chooser_delegate_iface_init().
 156  **/
 157 void
 158 _gtk_file_chooser_set_delegate (GtkFileChooser *receiver,
 159                                 GtkFileChooser *delegate)
 160 {
 161   g_return_if_fail (GTK_IS_FILE_CHOOSER (receiver));
 162   g_return_if_fail (GTK_IS_FILE_CHOOSER (delegate));
 163
 164   g_object_set_data (G_OBJECT (receiver), "gtk-file-chooser-delegate", delegate);
 165
 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 }
 175
 176 static GtkFileChooser *
 177 get_delegate (GtkFileChooser *receiver)
 178 {
 179   return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-delegate");
 180 }
 181
 182 static void
 183 delegate_select_path (GtkFileChooser    *chooser,
 184                       const GtkFilePath *path)
 185 {
 186   _gtk_file_chooser_select_path (get_delegate (chooser), path);
 187 }
 188
 189 static void
 190 delegate_unselect_path (GtkFileChooser    *chooser,
 191                         const GtkFilePath *path)
 192 {
 193   _gtk_file_chooser_unselect_path (get_delegate (chooser), path);
 194 }
 195
 196 static void
 197 delegate_select_all (GtkFileChooser *chooser)
 198 {
 199   gtk_file_chooser_select_all (get_delegate (chooser));
 200 }
 201
 202 static void
 203 delegate_unselect_all (GtkFileChooser *chooser)
 204 {
 205   gtk_file_chooser_unselect_all (get_delegate (chooser));
 206 }
 207
 208 static GSList *
 209 delegate_get_paths (GtkFileChooser *chooser)
 210 {
 211   return _gtk_file_chooser_get_paths (get_delegate (chooser));
 212 }
 213
 214 static GtkFilePath *
 215 delegate_get_preview_path (GtkFileChooser *chooser)
 216 {
 217   return _gtk_file_chooser_get_preview_path (get_delegate (chooser));
 218 }
 219
 220 static GtkFileSystem *
 221 delegate_get_file_system (GtkFileChooser *chooser)
 222 {
 223   return _gtk_file_chooser_get_file_system (get_delegate (chooser));
 224 }
 225
 226 static void
 227 delegate_add_filter (GtkFileChooser *chooser,
 228                      GtkFileFilter  *filter)
 229 {
 230   gtk_file_chooser_add_filter (get_delegate (chooser), filter);
 231 }
 232
 233 static void
 234 delegate_remove_filter (GtkFileChooser *chooser,
 235                         GtkFileFilter  *filter)
 236 {
 237   gtk_file_chooser_remove_filter (get_delegate (chooser), filter);
 238 }
 239
 240 static GSList *
 241 delegate_list_filters (GtkFileChooser *chooser)
 242 {
 243   return gtk_file_chooser_list_filters (get_delegate (chooser));
 244 }
 245
 246 static void
 247 delegate_set_current_folder (GtkFileChooser    *chooser,
 248                              const GtkFilePath *path)
 249 {
 250   _gtk_file_chooser_set_current_folder_path (chooser, path);
 251 }
 252
 253 static GtkFilePath *
 254 delegate_get_current_folder (GtkFileChooser *chooser)
 255 {
 256   return _gtk_file_chooser_get_current_folder_path (get_delegate (chooser));
 257 }
 258
 259 static void
 260 delegate_set_current_name (GtkFileChooser *chooser,
 261                            const gchar    *name)
 262 {
 263   gtk_file_chooser_set_current_name (get_delegate (chooser), name);
 264 }
 265
 266 static void
 267 delegate_notify (GObject    *object,
 268                  GParamSpec *pspec,
 269                  gpointer    data)
 270 {
 271   if (pspec->param_id >= GTK_FILE_CHOOSER_PROP_FIRST &&
 272       pspec->param_id <= GTK_FILE_CHOOSER_PROP_LAST)
 273     {
 274       g_object_notify (data, pspec->name);
 275     }
 276 }
 277
 278 static void
 279 delegate_selection_changed (GtkFileChooser *chooser,
 280                             gpointer        data)
 281 {
 282   g_signal_emit_by_name (data, "selection-changed");
 283 }
 284
 285 static void
 286 delegate_current_folder_changed (GtkFileChooser *chooser,
 287                                  gpointer        data)
 288 {
 289   g_signal_emit_by_name (data, "current-folder-changed");
 290 }
 291
 292 static void
 293 delegate_update_preview (GtkFileChooser    *chooser,
 294                          gpointer           data)
 295 {
 296   g_signal_emit_by_name (data, "update-preview");
 297 }