/* GAIL - The GNOME Accessibility Implementation Library
* Copyright 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 <gtk/gtk.h>
#include "gailsubmenuitem.h"
static void gail_sub_menu_item_class_init (GailSubMenuItemClass *klass);
static void gail_sub_menu_item_init (GailSubMenuItem *item);
static void gail_sub_menu_item_real_initialize (AtkObject *obj,
gpointer data);
static void atk_selection_interface_init (AtkSelectionIface *iface);
static gboolean gail_sub_menu_item_add_selection (AtkSelection *selection,
gint i);
static gboolean gail_sub_menu_item_clear_selection (AtkSelection *selection);
static AtkObject* gail_sub_menu_item_ref_selection (AtkSelection *selection,
gint i);
static gint gail_sub_menu_item_get_selection_count
(AtkSelection *selection);
static gboolean gail_sub_menu_item_is_child_selected
(AtkSelection *selection,
gint i);
static gboolean gail_sub_menu_item_remove_selection (AtkSelection *selection,
gint i);
static gint menu_item_add_gtk (GtkContainer *container,
GtkWidget *widget);
static gint menu_item_remove_gtk (GtkContainer *container,
GtkWidget *widget);
G_DEFINE_TYPE_WITH_CODE (GailSubMenuItem, gail_sub_menu_item, GAIL_TYPE_MENU_ITEM,
G_IMPLEMENT_INTERFACE (ATK_TYPE_SELECTION, atk_selection_interface_init))
static void
gail_sub_menu_item_class_init (GailSubMenuItemClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
class->initialize = gail_sub_menu_item_real_initialize;
}
static void
gail_sub_menu_item_init (GailSubMenuItem *item)
{
}
static void
gail_sub_menu_item_real_initialize (AtkObject *obj,
gpointer data)
{
GtkWidget *submenu;
ATK_OBJECT_CLASS (gail_sub_menu_item_parent_class)->initialize (obj, data);
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (data));
g_return_if_fail (submenu);
g_signal_connect (submenu,
"add",
G_CALLBACK (menu_item_add_gtk),
NULL);
g_signal_connect (submenu,
"remove",
G_CALLBACK (menu_item_remove_gtk),
NULL);
obj->role = ATK_ROLE_MENU;
}
AtkObject*
gail_sub_menu_item_new (GtkWidget *widget)
{
GObject *object;
AtkObject *accessible;
g_return_val_if_fail (GTK_IS_MENU_ITEM (widget), NULL);
object = g_object_new (GAIL_TYPE_SUB_MENU_ITEM, NULL);
accessible = ATK_OBJECT (object);
atk_object_initialize (accessible, widget);
return accessible;
}
static void
atk_selection_interface_init (AtkSelectionIface *iface)
{
iface->add_selection = gail_sub_menu_item_add_selection;
iface->clear_selection = gail_sub_menu_item_clear_selection;
iface->ref_selection = gail_sub_menu_item_ref_selection;
iface->get_selection_count = gail_sub_menu_item_get_selection_count;
iface->is_child_selected = gail_sub_menu_item_is_child_selected;
iface->remove_selection = gail_sub_menu_item_remove_selection;
/*
* select_all_selection does not make sense for a submenu of a menu item
* so no implementation is provided.
*/
}
static gboolean
gail_sub_menu_item_add_selection (AtkSelection *selection,
gint i)
{
GtkMenuShell *shell;
GList *item;
guint length;
GtkWidget *widget;
GtkWidget *submenu;
widget = GTK_ACCESSIBLE (selection)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
shell = GTK_MENU_SHELL (submenu);
length = g_list_length (shell->children);
if (i < 0 || i > length)
return FALSE;
item = g_list_nth (shell->children, i);
g_return_val_if_fail (item != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU_ITEM(item->data), FALSE);
gtk_menu_shell_select_item (shell, GTK_WIDGET (item->data));
return TRUE;
}
static gboolean
gail_sub_menu_item_clear_selection (AtkSelection *selection)
{
GtkMenuShell *shell;
GtkWidget *widget;
GtkWidget *submenu;
widget = GTK_ACCESSIBLE (selection)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
shell = GTK_MENU_SHELL (submenu);
gtk_menu_shell_deselect (shell);
return TRUE;
}
static AtkObject*
gail_sub_menu_item_ref_selection (AtkSelection *selection,
gint i)
{
GtkMenuShell *shell;
AtkObject *obj;
GtkWidget *widget;
GtkWidget *submenu;
if (i != 0)
return NULL;
widget = GTK_ACCESSIBLE (selection)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), NULL);
shell = GTK_MENU_SHELL (submenu);
if (shell->active_menu_item != NULL)
{
obj = gtk_widget_get_accessible (shell->active_menu_item);
g_object_ref (obj);
return obj;
}
else
{
return NULL;
}
}
static gint
gail_sub_menu_item_get_selection_count (AtkSelection *selection)
{
GtkMenuShell *shell;
GtkWidget *widget;
GtkWidget *submenu;
widget = GTK_ACCESSIBLE (selection)->widget;
if (widget == NULL)
/* State is defunct */
return 0;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
shell = GTK_MENU_SHELL (submenu);
/*
* Identifies the currently selected menu item
*/
if (shell->active_menu_item == NULL)
return 0;
else
return 1;
}
static gboolean
gail_sub_menu_item_is_child_selected (AtkSelection *selection,
gint i)
{
GtkMenuShell *shell;
gint j;
GtkWidget *widget;
GtkWidget *submenu;
widget = GTK_ACCESSIBLE (selection)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
shell = GTK_MENU_SHELL (submenu);
if (shell->active_menu_item == NULL)
return FALSE;
j = g_list_index (shell->children, shell->active_menu_item);
return (j==i);
}
static gboolean
gail_sub_menu_item_remove_selection (AtkSelection *selection,
gint i)
{
GtkMenuShell *shell;
GtkWidget *widget;
GtkWidget *submenu;
if (i != 0)
return FALSE;
widget = GTK_ACCESSIBLE (selection)->widget;
if (widget == NULL)
/* State is defunct */
return FALSE;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
shell = GTK_MENU_SHELL (submenu);
if (shell->active_menu_item &&
GTK_MENU_ITEM (shell->active_menu_item)->submenu)
{
/*
* Menu item contains a menu and it is the selected menu item
* so deselect it.
*/
gtk_menu_shell_deselect (shell);
}
return TRUE;
}
static gint
menu_item_add_gtk (GtkContainer *container,
GtkWidget *widget)
{
GtkWidget *parent_widget;
AtkObject *atk_parent;
AtkObject *atk_child;
GailContainer *gail_container;
gint index;
g_return_val_if_fail (GTK_IS_MENU (container), 1);
parent_widget = gtk_menu_get_attach_widget (GTK_MENU (container));
if (GTK_IS_MENU_ITEM (parent_widget))
{
atk_parent = gtk_widget_get_accessible (parent_widget);
atk_child = gtk_widget_get_accessible (widget);
gail_container = GAIL_CONTAINER (atk_parent);
g_object_notify (G_OBJECT (atk_child), "accessible_parent");
g_list_free (gail_container->children);
gail_container->children = gtk_container_get_children (container);
index = g_list_index (gail_container->children, widget);
g_signal_emit_by_name (atk_parent, "children_changed::add",
index, atk_child, NULL);
}
return 1;
}
static gint
menu_item_remove_gtk (GtkContainer *container,
GtkWidget *widget)
{
GtkWidget *parent_widget;
AtkObject *atk_parent;
AtkObject *atk_child;
GailContainer *gail_container;
AtkPropertyValues values = { NULL };
gint index;
gint list_length;
g_return_val_if_fail (GTK_IS_MENU (container), 1);
parent_widget = gtk_menu_get_attach_widget (GTK_MENU (container));
if (GTK_IS_MENU_ITEM (parent_widget))
{
atk_parent = gtk_widget_get_accessible (parent_widget);
atk_child = gtk_widget_get_accessible (widget);
gail_container = GAIL_CONTAINER (atk_parent);
g_value_init (&values.old_value, G_TYPE_POINTER);
g_value_set_pointer (&values.old_value, atk_parent);
values.property_name = "accessible-parent";
g_signal_emit_by_name (atk_child,
"property_change::accessible-parent", &values, NULL);
index = g_list_index (gail_container->children, widget);
list_length = g_list_length (gail_container->children);
g_list_free (gail_container->children);
gail_container->children = gtk_container_get_children (container);
if (index >= 0 && index <= list_length)
g_signal_emit_by_name (atk_parent, "children_changed::remove",
index, atk_child, NULL);
}
return 1;
}