1 /* GTK - The GIMP Toolkit
2 * gtkfilechooserembed.h: Abstract sizing interface for file selector implementations
3 * Copyright (C) 2004, Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
20 #include "gtkfilechooserembed.h"
21 #include "gtkmarshalers.h"
24 static void gtk_file_chooser_embed_class_init (gpointer g_iface);
25 static void delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,
27 gint *default_height);
28 static gboolean delegate_should_respond (GtkFileChooserEmbed *chooser_embed);
29 static void delegate_initial_focus (GtkFileChooserEmbed *chooser_embed);
30 static void delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,
32 static void delegate_response_requested (GtkFileChooserEmbed *chooser_embed,
35 static GtkFileChooserEmbed *
36 get_delegate (GtkFileChooserEmbed *receiver)
38 return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate");
42 * _gtk_file_chooser_embed_delegate_iface_init:
43 * @iface: a #GtkFileChoserEmbedIface structure
45 * An interface-initialization function for use in cases where an object is
46 * simply delegating the methods, signals of the #GtkFileChooserEmbed interface
47 * to another object. _gtk_file_chooser_embed_set_delegate() must be called on
48 * each instance of the object so that the delegate object can be found.
51 _gtk_file_chooser_embed_delegate_iface_init (GtkFileChooserEmbedIface *iface)
53 iface->get_default_size = delegate_get_default_size;
54 iface->should_respond = delegate_should_respond;
55 iface->initial_focus = delegate_initial_focus;
59 * _gtk_file_chooser_embed_set_delegate:
60 * @receiver: a GOobject implementing #GtkFileChooserEmbed
61 * @delegate: another GObject implementing #GtkFileChooserEmbed
63 * Establishes that calls on @receiver for #GtkFileChooser methods should be
64 * delegated to @delegate, and that #GtkFileChooser signals emitted on @delegate
65 * should be forwarded to @receiver. Must be used in conjunction with
66 * _gtk_file_chooser_embed_delegate_iface_init().
69 _gtk_file_chooser_embed_set_delegate (GtkFileChooserEmbed *receiver,
70 GtkFileChooserEmbed *delegate)
72 g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (receiver));
73 g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (delegate));
75 g_object_set_data (G_OBJECT (receiver), I_("gtk-file-chooser-embed-delegate"), delegate);
77 g_signal_connect (delegate, "default-size-changed",
78 G_CALLBACK (delegate_default_size_changed), receiver);
79 g_signal_connect (delegate, "response-requested",
80 G_CALLBACK (delegate_response_requested), receiver);
86 delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,
90 _gtk_file_chooser_embed_get_default_size (get_delegate (chooser_embed), default_width, default_height);
94 delegate_should_respond (GtkFileChooserEmbed *chooser_embed)
96 return _gtk_file_chooser_embed_should_respond (get_delegate (chooser_embed));
100 delegate_initial_focus (GtkFileChooserEmbed *chooser_embed)
102 _gtk_file_chooser_embed_initial_focus (get_delegate (chooser_embed));
106 delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,
109 g_signal_emit_by_name (data, "default-size-changed");
113 delegate_response_requested (GtkFileChooserEmbed *chooser_embed,
116 g_signal_emit_by_name (data, "response-requested");
120 /* publicly callable functions */
123 _gtk_file_chooser_embed_get_type (void)
125 static GType file_chooser_embed_type = 0;
127 if (!file_chooser_embed_type)
129 const GTypeInfo file_chooser_embed_info =
131 sizeof (GtkFileChooserEmbedIface), /* class_size */
132 NULL, /* base_init */
133 NULL, /* base_finalize */
134 (GClassInitFunc)gtk_file_chooser_embed_class_init, /* class_init */
137 file_chooser_embed_type = g_type_register_static (G_TYPE_INTERFACE,
138 I_("GtkFileChooserEmbed"),
139 &file_chooser_embed_info, 0);
141 g_type_interface_add_prerequisite (file_chooser_embed_type, GTK_TYPE_WIDGET);
144 return file_chooser_embed_type;
148 gtk_file_chooser_embed_class_init (gpointer g_iface)
150 GType iface_type = G_TYPE_FROM_INTERFACE (g_iface);
152 g_signal_new (I_("default-size-changed"),
155 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, default_size_changed),
157 _gtk_marshal_VOID__VOID,
159 g_signal_new (I_("response-requested"),
162 G_STRUCT_OFFSET (GtkFileChooserEmbedIface, response_requested),
164 _gtk_marshal_VOID__VOID,
169 _gtk_file_chooser_embed_get_default_size (GtkFileChooserEmbed *chooser_embed,
171 gint *default_height)
173 g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
174 g_return_if_fail (default_width != NULL);
175 g_return_if_fail (default_height != NULL);
177 GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_default_size (chooser_embed, default_width, default_height);
181 _gtk_file_chooser_embed_should_respond (GtkFileChooserEmbed *chooser_embed)
183 g_return_val_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed), FALSE);
185 return GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->should_respond (chooser_embed);
189 _gtk_file_chooser_embed_initial_focus (GtkFileChooserEmbed *chooser_embed)
191 g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));
193 GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->initial_focus (chooser_embed);