/* GAIL - The GNOME Accessibility Implementation Library
* Copyright 2001, 2002, 2003 Sun Microsystems 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 <stdlib.h>
#include <string.h>
#undef GTK_DISABLE_DEPRECATED
#include <gtk/gtk.h>
#include "gailtoplevel.h"
static void gail_toplevel_class_init (GailToplevelClass *klass);
static void gail_toplevel_init (GailToplevel *toplevel);
static void gail_toplevel_initialize (AtkObject *accessible,
gpointer data);
static void gail_toplevel_object_finalize (GObject *obj);
/* atkobject.h */
static gint gail_toplevel_get_n_children (AtkObject *obj);
static AtkObject* gail_toplevel_ref_child (AtkObject *obj,
gint i);
static AtkObject* gail_toplevel_get_parent (AtkObject *obj);
/* Callbacks */
static void gail_toplevel_window_destroyed (GtkWindow *window,
GailToplevel *text);
static gboolean gail_toplevel_hide_event_watcher (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data);
static gboolean gail_toplevel_show_event_watcher (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data);
/* Misc */
static void _gail_toplevel_remove_child (GailToplevel *toplevel,
GtkWindow *window);
static gboolean is_attached_menu_window (GtkWidget *widget);
static gboolean is_combo_window (GtkWidget *widget);
G_DEFINE_TYPE (GailToplevel, gail_toplevel, ATK_TYPE_OBJECT)
static void
gail_toplevel_class_init (GailToplevelClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS(klass);
GObjectClass *g_object_class = G_OBJECT_CLASS(klass);
class->initialize = gail_toplevel_initialize;
class->get_n_children = gail_toplevel_get_n_children;
class->ref_child = gail_toplevel_ref_child;
class->get_parent = gail_toplevel_get_parent;
g_object_class->finalize = gail_toplevel_object_finalize;
}
static void
gail_toplevel_init (GailToplevel *toplevel)
{
GtkWindow *window;
GtkWidget *widget;
GList *l;
guint signal_id;
l = toplevel->window_list = gtk_window_list_toplevels ();
while (l)
{
window = GTK_WINDOW (l->data);
widget = GTK_WIDGET (window);
if (!window ||
!gtk_widget_get_visible (widget) ||
is_attached_menu_window (widget) ||
GTK_WIDGET (window)->parent ||
GTK_IS_PLUG (window))
{
GList *temp_l = l->next;
toplevel->window_list = g_list_delete_link (toplevel->window_list, l);
l = temp_l;
}
else
{
g_signal_connect (G_OBJECT (window),
"destroy",
G_CALLBACK (gail_toplevel_window_destroyed),
toplevel);
l = l->next;
}
}
g_type_class_ref (GTK_TYPE_WINDOW);
signal_id = g_signal_lookup ("show", GTK_TYPE_WINDOW);
g_signal_add_emission_hook (signal_id, 0,
gail_toplevel_show_event_watcher, toplevel, (GDestroyNotify) NULL);
signal_id = g_signal_lookup ("hide", GTK_TYPE_WINDOW);
g_signal_add_emission_hook (signal_id, 0,
gail_toplevel_hide_event_watcher, toplevel, (GDestroyNotify) NULL);
}
static void
gail_toplevel_initialize (AtkObject *accessible,
gpointer data)
{
ATK_OBJECT_CLASS (gail_toplevel_parent_class)->initialize (accessible, data);
accessible->role = ATK_ROLE_APPLICATION;
accessible->name = g_get_prgname();
accessible->accessible_parent = NULL;
}
static void
gail_toplevel_object_finalize (GObject *obj)
{
GailToplevel *toplevel = GAIL_TOPLEVEL (obj);
if (toplevel->window_list)
g_list_free (toplevel->window_list);
G_OBJECT_CLASS (gail_toplevel_parent_class)->finalize (obj);
}
static AtkObject*
gail_toplevel_get_parent (AtkObject *obj)
{
return NULL;
}
static gint
gail_toplevel_get_n_children (AtkObject *obj)
{
GailToplevel *toplevel = GAIL_TOPLEVEL (obj);
gint rc = g_list_length (toplevel->window_list);
return rc;
}
static AtkObject*
gail_toplevel_ref_child (AtkObject *obj,
gint i)
{
GailToplevel *toplevel;
gpointer ptr;
GtkWidget *widget;
AtkObject *atk_obj;
toplevel = GAIL_TOPLEVEL (obj);
ptr = g_list_nth_data (toplevel->window_list, i);
if (!ptr)
return NULL;
widget = GTK_WIDGET (ptr);
atk_obj = gtk_widget_get_accessible (widget);
g_object_ref (atk_obj);
return atk_obj;
}
/*
* Window destroy events on GtkWindow cause a child to be removed
* from the toplevel
*/
static void
gail_toplevel_window_destroyed (GtkWindow *window,
GailToplevel *toplevel)
{
_gail_toplevel_remove_child (toplevel, window);
}
/*
* Show events cause a child to be added to the toplevel
*/
static gboolean
gail_toplevel_show_event_watcher (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
GailToplevel *toplevel = GAIL_TOPLEVEL (data);
AtkObject *atk_obj = ATK_OBJECT (toplevel);
GObject *object;
GtkWidget *widget;
gint n_children;
AtkObject *child;
object = g_value_get_object (param_values + 0);
if (!GTK_IS_WINDOW (object))
return TRUE;
widget = GTK_WIDGET (object);
if (widget->parent ||
is_attached_menu_window (widget) ||
is_combo_window (widget) ||
GTK_IS_PLUG (widget))
return TRUE;
child = gtk_widget_get_accessible (widget);
if (atk_object_get_role (child) == ATK_ROLE_REDUNDANT_OBJECT)
{
return TRUE;
}
/*
* Add the window to the list & emit the signal.
* Don't do this for tooltips (Bug #150649).
*/
if (atk_object_get_role (child) == ATK_ROLE_TOOL_TIP)
{
return TRUE;
}
toplevel->window_list = g_list_append (toplevel->window_list, widget);
n_children = g_list_length (toplevel->window_list);
/*
* Must subtract 1 from the n_children since the index is 0-based
* but g_list_length is 1-based.
*/
atk_object_set_parent (child, atk_obj);
g_signal_emit_by_name (atk_obj, "children-changed::add",
n_children - 1,
child, NULL);
/* Connect destroy signal callback */
g_signal_connect (G_OBJECT(object),
"destroy",
G_CALLBACK (gail_toplevel_window_destroyed),
toplevel);
return TRUE;
}
/*
* Hide events on GtkWindow cause a child to be removed from the toplevel
*/
static gboolean
gail_toplevel_hide_event_watcher (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
GailToplevel *toplevel = GAIL_TOPLEVEL (data);
GObject *object;
object = g_value_get_object (param_values + 0);
if (!GTK_IS_WINDOW (object))
return TRUE;
_gail_toplevel_remove_child (toplevel, GTK_WINDOW (object));
return TRUE;
}
/*
* Common code used by destroy and hide events on GtkWindow
*/
static void
_gail_toplevel_remove_child (GailToplevel *toplevel,
GtkWindow *window)
{
AtkObject *atk_obj = ATK_OBJECT (toplevel);
GList *l;
guint window_count = 0;
AtkObject *child;
if (toplevel->window_list)
{
GtkWindow *tmp_window;
/* Must loop through them all */
for (l = toplevel->window_list; l; l = l->next)
{
tmp_window = GTK_WINDOW (l->data);
if (window == tmp_window)
{
/* Remove the window from the window_list & emit the signal */
toplevel->window_list = g_list_remove (toplevel->window_list,
l->data);
child = gtk_widget_get_accessible (GTK_WIDGET (window));
g_signal_emit_by_name (atk_obj, "children-changed::remove",
window_count,
child, NULL);
atk_object_set_parent (child, NULL);
break;
}
window_count++;
}
}
}
static gboolean
is_attached_menu_window (GtkWidget *widget)
{
GtkWidget *child = GTK_BIN (widget)->child;
gboolean ret = FALSE;
if (GTK_IS_MENU (child))
{
GtkWidget *attach;
attach = gtk_menu_get_attach_widget (GTK_MENU (child));
/* Allow for menu belonging to the Panel Menu, which is a GtkButton */
if (GTK_IS_MENU_ITEM (attach) ||
GTK_IS_OPTION_MENU (attach) ||
GTK_IS_BUTTON (attach))
ret = TRUE;
}
return ret;
}
static gboolean
is_combo_window (GtkWidget *widget)
{
GtkWidget *child = GTK_BIN (widget)->child;
AtkObject *obj;
GtkAccessible *accessible;
if (!GTK_IS_EVENT_BOX (child))
return FALSE;
child = GTK_BIN (child)->child;
if (!GTK_IS_FRAME (child))
return FALSE;
child = GTK_BIN (child)->child;
if (!GTK_IS_SCROLLED_WINDOW (child))
return FALSE;
obj = gtk_widget_get_accessible (child);
obj = atk_object_get_parent (obj);
accessible = GTK_ACCESSIBLE (obj);
if (GTK_IS_COMBO (accessible->widget))
return TRUE;
return FALSE;
}