/* GTK - The GIMP Toolkit

 * gtkfilechooserembed.h: Abstract sizing interface for file selector implementations

 * Copyright (C) 2004, Red Hat, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#include "config.h"

#include "gtkfilechooserembed.h"

#include "gtkmarshalers.h"

#include "gtkintl.h"

#include "gtkalias.h"

static void gtk_file_chooser_embed_class_init (gpointer g_iface);

static void delegate_get_default_size         (GtkFileChooserEmbed *chooser_embed,

					       gint                *default_width,

					       gint                *default_height);

static gboolean delegate_should_respond       (GtkFileChooserEmbed *chooser_embed);

static void delegate_initial_focus            (GtkFileChooserEmbed *chooser_embed);

static void delegate_default_size_changed     (GtkFileChooserEmbed *chooser_embed,

					       gpointer             data);

static void delegate_response_requested       (GtkFileChooserEmbed *chooser_embed,

					       gpointer             data);

static GtkFileChooserEmbed *

get_delegate (GtkFileChooserEmbed *receiver)

{

  return g_object_get_data (G_OBJECT (receiver), "gtk-file-chooser-embed-delegate");

}

/**

 * _gtk_file_chooser_embed_delegate_iface_init:

 * @iface: a #GtkFileChoserEmbedIface structure

 * 

 * An interface-initialization function for use in cases where an object is

 * simply delegating the methods, signals of the #GtkFileChooserEmbed interface

 * to another object.  _gtk_file_chooser_embed_set_delegate() must be called on

 * each instance of the object so that the delegate object can be found.

 **/

void

_gtk_file_chooser_embed_delegate_iface_init (GtkFileChooserEmbedIface *iface)

{

  iface->get_default_size = delegate_get_default_size;

  iface->should_respond = delegate_should_respond;

  iface->initial_focus = delegate_initial_focus;

}

/**

 * _gtk_file_chooser_embed_set_delegate:

 * @receiver: a GOobject implementing #GtkFileChooserEmbed

 * @delegate: another GObject implementing #GtkFileChooserEmbed

 *

 * Establishes that calls on @receiver for #GtkFileChooser methods should be

 * delegated to @delegate, and that #GtkFileChooser signals emitted on @delegate

 * should be forwarded to @receiver. Must be used in conjunction with

 * _gtk_file_chooser_embed_delegate_iface_init().

 **/

void

_gtk_file_chooser_embed_set_delegate (GtkFileChooserEmbed *receiver,

				      GtkFileChooserEmbed *delegate)

{

  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (receiver));

  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (delegate));

  g_object_set_data (G_OBJECT (receiver), I_("gtk-file-chooser-embed-delegate"), delegate);

  g_signal_connect (delegate, "default-size-changed",

		    G_CALLBACK (delegate_default_size_changed), receiver);

  g_signal_connect (delegate, "response-requested",

		    G_CALLBACK (delegate_response_requested), receiver);

}

static void

delegate_get_default_size (GtkFileChooserEmbed *chooser_embed,

			   gint                *default_width,

			   gint                *default_height)

{

  _gtk_file_chooser_embed_get_default_size (get_delegate (chooser_embed), default_width, default_height);

}

static gboolean

delegate_should_respond (GtkFileChooserEmbed *chooser_embed)

{

  return _gtk_file_chooser_embed_should_respond (get_delegate (chooser_embed));

}

static void

delegate_initial_focus (GtkFileChooserEmbed *chooser_embed)

{

  _gtk_file_chooser_embed_initial_focus (get_delegate (chooser_embed));

}

static void

delegate_default_size_changed (GtkFileChooserEmbed *chooser_embed,

			       gpointer             data)

{

  g_signal_emit_by_name (data, "default-size-changed");

}

static void

delegate_response_requested (GtkFileChooserEmbed *chooser_embed,

			     gpointer             data)

{

  g_signal_emit_by_name (data, "response-requested");

}

/* publicly callable functions */

GType

_gtk_file_chooser_embed_get_type (void)

{

  static GType file_chooser_embed_type = 0;

  if (!file_chooser_embed_type)

    {

      const GTypeInfo file_chooser_embed_info =

      {

	sizeof (GtkFileChooserEmbedIface),  /* class_size */

	NULL,                          /* base_init */

	NULL,			       /* base_finalize */

	(GClassInitFunc)gtk_file_chooser_embed_class_init, /* class_init */

      };

      file_chooser_embed_type = g_type_register_static (G_TYPE_INTERFACE,

							I_("GtkFileChooserEmbed"),

							&file_chooser_embed_info, 0);

      g_type_interface_add_prerequisite (file_chooser_embed_type, GTK_TYPE_WIDGET);

    }

  return file_chooser_embed_type;

}

static void

gtk_file_chooser_embed_class_init (gpointer g_iface)

{

  GType iface_type = G_TYPE_FROM_INTERFACE (g_iface);

  g_signal_new (I_("default-size-changed"),

		iface_type,

		G_SIGNAL_RUN_LAST,

		G_STRUCT_OFFSET (GtkFileChooserEmbedIface, default_size_changed),

		NULL, NULL,

		_gtk_marshal_VOID__VOID,

		G_TYPE_NONE, 0);

  g_signal_new (I_("response-requested"),

		iface_type,

		G_SIGNAL_RUN_LAST,

		G_STRUCT_OFFSET (GtkFileChooserEmbedIface, response_requested),

		NULL, NULL,

		_gtk_marshal_VOID__VOID,

		G_TYPE_NONE, 0);

}

void

_gtk_file_chooser_embed_get_default_size (GtkFileChooserEmbed *chooser_embed,

					 gint                *default_width,

					 gint                *default_height)

{

  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));

  g_return_if_fail (default_width != NULL);

  g_return_if_fail (default_height != NULL);

  GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->get_default_size (chooser_embed, default_width, default_height);

}

gboolean

_gtk_file_chooser_embed_should_respond (GtkFileChooserEmbed *chooser_embed)

{

  g_return_val_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed), FALSE);

  return GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->should_respond (chooser_embed);

}

void

_gtk_file_chooser_embed_initial_focus (GtkFileChooserEmbed *chooser_embed)

{

  g_return_if_fail (GTK_IS_FILE_CHOOSER_EMBED (chooser_embed));

  GTK_FILE_CHOOSER_EMBED_GET_IFACE (chooser_embed)->initial_focus (chooser_embed);

}