[gtk+] Add RELATION_NODE_PARENT_OF relationship for treeview.

[Li Yuan <liyuan src gnome org>]

commit a196cb940072e6e6078dec7c3e964b62e0bef08c
Author: Joanmarie Diggs <joanmarie diggs gmail com>
Date:   Fri Nov 6 16:17:23 2009 +0800

    Add RELATION_NODE_PARENT_OF relationship for treeview.
    
    Bug 569430.

 modules/other/gail/gailtreeview.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/modules/other/gail/gailtreeview.c b/modules/other/gail/gailtreeview.c
index 508f233..44a6337 100644
--- a/modules/other/gail/gailtreeview.c
+++ b/modules/other/gail/gailtreeview.c
@@ -1027,6 +1027,8 @@ gail_tree_view_ref_child (AtkObject *obj,
       relation = atk_relation_new (accessible_array, 1,
                                    ATK_RELATION_NODE_CHILD_OF);
       atk_relation_set_add (relation_set, relation);
+      atk_object_add_relationship (parent_node, ATK_RELATION_NODE_PARENT_OF,
+                                   child);
       g_object_unref (relation);
       g_object_unref (relation_set);
     }