[gtk+/a11y] Set accessible parents of notebook children

[Matthias Clasen <matthiasc src gnome org>]

commit cbaa52ae3c79859471a20d5bc56f73d21a21ee46
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jul 3 15:06:44 2011 -0400

    Set accessible parents of notebook children
    
    Explicitly set the notebook page object as the accessible parent
    of the page, otherwise, AtkObject follows the widget parents chain
    and makes the notebook accessible the parent.

 gtk/a11y/gtknotebookpageaccessible.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtk/a11y/gtknotebookpageaccessible.c b/gtk/a11y/gtknotebookpageaccessible.c
index 3e3dfc2..3b4aaec 100644
--- a/gtk/a11y/gtknotebookpageaccessible.c
+++ b/gtk/a11y/gtknotebookpageaccessible.c
@@ -238,6 +238,8 @@ gtk_notebook_page_accessible_new (GtkNotebookAccessible *notebook,
   atk_object->role = ATK_ROLE_PAGE_TAB;
   atk_object->layer = ATK_LAYER_WIDGET;
 
+  atk_object_set_parent (gtk_widget_get_accessible (child), atk_object);
+
   g_signal_connect (gtk_accessible_get_widget (page->notebook),
                     "child-notify::tab-label",
                     G_CALLBACK (notify_tab_label), page);
@@ -258,6 +260,7 @@ gtk_notebook_page_accessible_invalidate (GtkNotebookPageAccessible *page)
   atk_object_notify_state_change (obj, ATK_STATE_DEFUNCT, TRUE);
   atk_object_set_parent (obj, NULL);
   page->notebook = NULL;
+  atk_object_set_parent (gtk_widget_get_accessible (page->child), NULL);
   page->child = NULL;
 }