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/* GTK+ - accessibility implementations
* Copyright 2001 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "gtkradiobuttonaccessible.h"
struct _GtkRadioButtonAccessiblePrivate
{
GSList *old_group;
};
G_DEFINE_TYPE_WITH_PRIVATE (GtkRadioButtonAccessible, gtk_radio_button_accessible, GTK_TYPE_TOGGLE_BUTTON_ACCESSIBLE)
static void
gtk_radio_button_accessible_initialize (AtkObject *accessible,
gpointer data)
{
ATK_OBJECT_CLASS (gtk_radio_button_accessible_parent_class)->initialize (accessible, data);
accessible->role = ATK_ROLE_RADIO_BUTTON;
}
static AtkRelationSet *
gtk_radio_button_accessible_ref_relation_set (AtkObject *obj)
{
GtkWidget *widget;
AtkRelationSet *relation_set;
GSList *list;
GtkRadioButtonAccessible *radio_button;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return NULL;
radio_button = GTK_RADIO_BUTTON_ACCESSIBLE (obj);
relation_set = ATK_OBJECT_CLASS (gtk_radio_button_accessible_parent_class)->ref_relation_set (obj);
/* If the radio button'group has changed remove the relation */
list = gtk_radio_button_get_group (GTK_RADIO_BUTTON (widget));
if (radio_button->priv->old_group != list)
{
AtkRelation *relation;
relation = atk_relation_set_get_relation_by_type (relation_set, ATK_RELATION_MEMBER_OF);
atk_relation_set_remove (relation_set, relation);
}
if (!atk_relation_set_contains (relation_set, ATK_RELATION_MEMBER_OF))
{
/*
* Get the members of the button group
*/
radio_button->priv->old_group = list;
if (list)
{
AtkObject **accessible_array;
guint list_length;
AtkRelation* relation;
gint i = 0;
list_length = g_slist_length (list);
accessible_array = g_new (AtkObject *, list_length);
while (list != NULL)
{
GtkWidget* list_item = list->data;
accessible_array[i++] = gtk_widget_get_accessible (list_item);
list = list->next;
}
relation = atk_relation_new (accessible_array, list_length,
ATK_RELATION_MEMBER_OF);
g_free (accessible_array);
atk_relation_set_add (relation_set, relation);
/*
* Unref the relation so that it is not leaked.
*/
g_object_unref (relation);
}
}
return relation_set;
}
static void
gtk_radio_button_accessible_class_init (GtkRadioButtonAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
class->initialize = gtk_radio_button_accessible_initialize;
class->ref_relation_set = gtk_radio_button_accessible_ref_relation_set;
}
static void
gtk_radio_button_accessible_init (GtkRadioButtonAccessible *radio_button)
{
radio_button->priv = gtk_radio_button_accessible_get_instance_private (radio_button);
}
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