/* ATK - Accessibility Toolkit
- * Copyright 2001 Sun Microsystems Inc.
+ * 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
* Boston, MA 02111-1307, USA.
*/
+#include "config.h"
+
#include <atk/atkgobjectaccessible.h>
+#include <atk/atkregistry.h>
+#include <atk/atkutil.h>
+/**
+ * SECTION:atkgobjectaccessible
+ * @Short_description: This object class is derived from AtkObject and
+ * can be used as a basis implementing accessible objects.
+ * @Title:AtkGObjectAccessible
+ *
+ * This object class is derived from AtkObject. It can be used as a
+ * basis for implementing accessible objects for GObjects which are
+ * not derived from GtkWidget. One example of its use is in providing
+ * an accessible object for GnomeCanvasItem in the GAIL library.
+ */
static void atk_gobject_accessible_class_init (AtkGObjectAccessibleClass *klass);
static void atk_real_gobject_accessible_initialize (AtkObject *atk_obj,
gpointer data);
-static void atk_gobject_accessible_dispose (gpointer data);
+static void atk_gobject_accessible_object_gone_cb (gpointer data);
static GQuark quark_accessible_object = 0;
static GQuark quark_object = 0;
-static AtkObjectClass *parent_class = NULL;
+static gpointer parent_class = NULL;
GType
atk_gobject_accessible_get_type (void)
*
* Gets the accessible object for the specified @obj.
*
- * Returns: a #AtkObject which is the accessible object for the @obj
+ * Returns: (transfer none): a #AtkObject which is the accessible object for
+ * the @obj
**/
AtkObject*
atk_gobject_accessible_for_object (GObject *obj)
g_return_val_if_fail (G_IS_OBJECT (obj), NULL);
/* See if we have a cached accessible for this object */
- accessible = g_object_get_qdata (obj,
- quark_accessible_object);
+ accessible = quark_accessible_object ? g_object_get_qdata (obj, quark_accessible_object) : NULL;
if (!accessible)
{
G_OBJECT_TYPE (obj));
accessible = atk_object_factory_create_accessible (factory,
obj);
+ if (!ATK_IS_GOBJECT_ACCESSIBLE (accessible))
+ {
+ /*
+ * The AtkObject which was created was not a AtkGObjectAccessible
+ */
+ g_object_weak_ref (obj,
+ (GWeakNotify) g_object_unref,
+ accessible);
+ if (!quark_accessible_object)
+ quark_accessible_object = g_quark_from_static_string ("accessible-object");
+ }
g_object_set_qdata (obj, quark_accessible_object, accessible);
}
return accessible;
/**
* atk_gobject_accessible_get_object:
- * @obj: a #AtkObject
+ * @obj: a #AtkGObjectAccessible
*
* Gets the GObject for which @obj is the accessible object.
*
- * Returns: a #GObject which is the object for which @obj is the accessible objedct
+ * Returns: (transfer none): a #GObject which is the object for which @obj is
+ * the accessible object
**/
GObject *
atk_gobject_accessible_get_object (AtkGObjectAccessible *obj)
atk_obj->layer = ATK_LAYER_WIDGET;
g_object_weak_ref (data,
- (GWeakNotify) atk_gobject_accessible_dispose,
+ (GWeakNotify) atk_gobject_accessible_object_gone_cb,
atk_gobj);
}
static void
-atk_gobject_accessible_dispose (gpointer data)
+atk_gobject_accessible_object_gone_cb (gpointer data)
{
+ GObject *object;
+
g_return_if_fail (ATK_IS_GOBJECT_ACCESSIBLE (data));
- g_object_set_qdata (G_OBJECT (data), quark_accessible_object, NULL);
+ object = atk_gobject_accessible_get_object (data);
+ if (object)
+ g_object_set_qdata (object, quark_accessible_object, NULL);
+
+ g_object_set_qdata (G_OBJECT (data), quark_object, NULL);
atk_object_notify_state_change (ATK_OBJECT (data), ATK_STATE_DEFUNCT,
TRUE);
g_object_unref (data);
}
static void
+atk_gobject_accessible_dispose (GObject *atk_obj)
+{
+ GObject *obj = atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (atk_obj));
+
+ if (obj) {
+ g_object_set_qdata (obj, quark_accessible_object, NULL);
+ g_object_weak_unref (obj,
+ (GWeakNotify) atk_gobject_accessible_object_gone_cb,
+ atk_obj);
+
+ g_object_set_qdata (atk_obj, quark_object, NULL);
+ atk_object_notify_state_change (ATK_OBJECT (atk_obj), ATK_STATE_DEFUNCT,
+ TRUE);
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (atk_obj);
+}
+
+static void
atk_gobject_accessible_class_init (AtkGObjectAccessibleClass *klass)
{
AtkObjectClass *class;
+ GObjectClass *object_class;
class = ATK_OBJECT_CLASS (klass);
- parent_class = g_type_class_ref (ATK_TYPE_OBJECT);
+ parent_class = g_type_class_peek_parent (klass);
class->initialize = atk_real_gobject_accessible_initialize;
- quark_accessible_object = g_quark_from_static_string ("accessible-object");
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->dispose = atk_gobject_accessible_dispose;
+
+ if (!quark_accessible_object)
+ quark_accessible_object = g_quark_from_static_string ("accessible-object");
quark_object = g_quark_from_static_string ("object-for-accessible");
}