+static AtkStateSet *
+gtk_accessible_ref_state_set (AtkObject *object)
+{
+ GtkAccessible *accessible = GTK_ACCESSIBLE (object);
+ AtkStateSet *state_set;
+
+ state_set = ATK_OBJECT_CLASS (gtk_accessible_parent_class)->ref_state_set (object);
+
+ if (accessible->priv->widget == NULL)
+ atk_state_set_add_state (state_set, ATK_STATE_DEFUNCT);
+
+ return state_set;
+}
+
+static void
+gtk_accessible_real_widget_set (GtkAccessible *accessible)
+{
+ atk_object_notify_state_change (ATK_OBJECT (accessible), ATK_STATE_DEFUNCT, FALSE);
+}
+
+static void
+gtk_accessible_real_widget_unset (GtkAccessible *accessible)
+{
+ atk_object_notify_state_change (ATK_OBJECT (accessible), ATK_STATE_DEFUNCT, TRUE);
+}
+
+static void
+gtk_accessible_dispose (GObject *object)
+{
+ GtkAccessible *accessible = GTK_ACCESSIBLE (object);
+
+ gtk_accessible_set_widget (accessible, NULL);
+
+ G_OBJECT_CLASS (gtk_accessible_parent_class)->dispose (object);
+}
+