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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-dialog-utils.h
 *
 * Copyright (C) 2001  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors:
 *   Michael Meeks <michael@ximian.com>
 *   Ettore Perazzoli <ettore@ximian.com>
 */

#include "e-dialog-utils.h"

#include "widgets/misc/e-bonobo-widget.h"

#include <gdk/gdkx.h>
#include <gdk/gdkprivate.h>
#include <gdk/gdk.h>

#include <gtk/gtksignal.h>

#include <libgnomeui/gnome-dialog-util.h>

#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-property-bag.h>


#define TRANSIENT_DATA_ID "e-dialog:transient"


static void
transient_realize_callback (GtkWidget *widget)
{
    GdkWindow *window;

    window = gtk_object_get_data (GTK_OBJECT (widget), TRANSIENT_DATA_ID);
    g_assert (window != NULL);

    gdk_window_set_transient_for (GTK_WIDGET (widget)->window, window);
}

static void
transient_unrealize_callback (GtkWidget *widget)
{
    GdkWindow *window;

    window = gtk_object_get_data (GTK_OBJECT (widget), TRANSIENT_DATA_ID);
    g_assert (window != NULL);

    gdk_property_delete (window, gdk_atom_intern ("WM_TRANSIENT_FOR", FALSE));
}

static void
transient_destroy_callback (GtkWidget *widget)
{
    GdkWindow *window;
    
    window = gtk_object_get_data (GTK_OBJECT (widget), "transient");
    if (window != NULL)
        gdk_window_unref (window);
}

static void       
set_transient_for_gdk (GtkWindow *window, 
               GdkWindow *parent)
{
    g_return_if_fail (window != NULL);
    g_return_if_fail (gtk_object_get_data (GTK_OBJECT (window), TRANSIENT_DATA_ID) == NULL);

    gdk_window_ref (parent); /* FIXME? */

    gtk_object_set_data (GTK_OBJECT (window), TRANSIENT_DATA_ID, parent);

    if (GTK_WIDGET_REALIZED (window))
        gdk_window_set_transient_for (GTK_WIDGET (window)->window, parent);

    gtk_signal_connect (GTK_OBJECT (window), "realize",
                GTK_SIGNAL_FUNC (transient_realize_callback), NULL);

    gtk_signal_connect (GTK_OBJECT (window), "unrealize",
                GTK_SIGNAL_FUNC (transient_unrealize_callback), NULL);
    
    gtk_signal_connect (GTK_OBJECT (window), "destroy",
                GTK_SIGNAL_FUNC (transient_destroy_callback), NULL);
}


/**
 * e_set_dialog_parent:
 * @dialog: 
 * @parent_widget: 
 * 
 * This sets the parent for @dialog to be @parent_widget.  Unlike
 * gtk_window_set_parent(), this doesn't need @parent_widget to be the actual
 * toplevel, and also works if @parent_widget is been embedded as a Bonobo
 * control by an out-of-process container.
 **/
void
e_set_dialog_parent (GtkWindow *dialog,
             GtkWidget *parent_widget)
{
    Bonobo_PropertyBag property_bag;
    GtkWidget *toplevel;
    GdkWindow *gdk_window;
    CORBA_char *id;
    guint32 xid;

    g_return_if_fail (dialog != NULL);
    g_return_if_fail (GTK_IS_WINDOW (dialog));
    g_return_if_fail (parent_widget != NULL);
    g_return_if_fail (GTK_IS_WIDGET (parent_widget));

    toplevel = gtk_widget_get_toplevel (parent_widget);
    if (toplevel == NULL)
        return;

    if (! BONOBO_IS_CONTROL (toplevel)) {
        if (GTK_IS_WINDOW (toplevel))
            gtk_window_set_transient_for (dialog, GTK_WINDOW (toplevel));
        return;
    }

    property_bag = bonobo_control_get_ambient_properties (BONOBO_CONTROL (toplevel), NULL);
    if (property_bag == CORBA_OBJECT_NIL)
        return;

    id = bonobo_property_bag_client_get_value_string (property_bag, E_BONOBO_WIDGET_TOPLEVEL_PROPERTY_ID, NULL);
    if (id == NULL)
        return;

    xid = strtol (id, NULL, 10);

    gdk_window = gdk_window_foreign_new (xid);
    set_transient_for_gdk (dialog, gdk_window);
}

/**
 * e_set_dialog_parent_from_xid:
 * @dialog: 
 * @xid: 
 * 
 * Like %e_set_dialog_parent_from_xid, but use an XID to specify the parent
 * window.
 **/
void
e_set_dialog_parent_from_xid (GtkWindow *dialog,
                  Window xid)
{
    g_return_if_fail (dialog != NULL);
    g_return_if_fail (GTK_IS_WINDOW (dialog));

    set_transient_for_gdk (dialog, gdk_window_foreign_new (xid));
}

static void
e_gnome_dialog_parent_destroyed (GtkWidget *parent, GtkWidget *dialog)
{
    gnome_dialog_close (GNOME_DIALOG (dialog));
}

void
e_gnome_dialog_set_parent (GnomeDialog *dialog, GtkWindow *parent)
{
    gnome_dialog_set_parent (dialog, parent);
    gtk_signal_connect_while_alive (GTK_OBJECT (parent), "destroy",
                    e_gnome_dialog_parent_destroyed,
                    dialog, GTK_OBJECT (dialog));
}

GtkWidget *
e_gnome_warning_dialog_parented (const char *warning, GtkWindow *parent)
{
    GtkWidget *dialog;
    
    dialog = gnome_warning_dialog_parented (warning, parent);
    gtk_signal_connect (GTK_OBJECT (parent), "destroy",
                e_gnome_dialog_parent_destroyed, dialog);
    
    return dialog;
}

GtkWidget *
e_gnome_ok_cancel_dialog_parented (const char *message, GnomeReplyCallback callback,
                   gpointer data, GtkWindow *parent)
{
    GtkWidget *dialog;
    
    dialog = gnome_ok_cancel_dialog_parented (message, callback, data, parent);
    gtk_signal_connect (GTK_OBJECT (parent), "destroy",
                e_gnome_dialog_parent_destroyed, dialog);
    
    return dialog;
}