From 1cb3dea0af83c67569773ed81b30d0bb9440e80c Mon Sep 17 00:00:00 2001
From: Thomas Hansen <thomas.hansen@gmail.com>
Date: Thu, 20 Sep 2012 10:30:01 -0500
Subject: [PATCH] dispatch parent property event on widgets vreated by builder

---
 kivy/lang.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kivy/lang.py b/kivy/lang.py
index 84f920743..fbde40844 100644
--- a/kivy/lang.py
+++ b/kivy/lang.py
@@ -1300,6 +1300,10 @@ class BuilderBase(object):
                 widget_set.bind(**{key: partial(custom_callback,
                     crule, idmap)})
 
+                #hack for on_parent
+                if crule.name == 'on_parent':
+                    Factory.Widget.parent.dispatch(widget_set)
+
         # rule finished, forget it
         del self.rulectx[rootrule]