From a4550c49e982aa0218ab7097b814678505f8482c Mon Sep 17 00:00:00 2001
From: Michael Brasser <michael.brasser@nokia.com>
Date: Fri, 18 Dec 2009 14:07:39 +1000
Subject: Check if the scene exists before attempting to set its focus item.

Prevents crashing when an item involved in the scope chain  is set to
be visible but it isn't part of a scene.

Reviewed-by: Alexis Menard
---
 src/gui/graphicsview/qgraphicsitem.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 90cc132..03e8b09 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -2181,7 +2181,7 @@ void QGraphicsItemPrivate::setVisibleHelper(bool newVisible, bool explicitly, bo
     }
 
     // Enable subfocus
-    if (newVisible) {
+    if (scene && newVisible) {
         QGraphicsItem *p = parent;
         bool done = false;
         while (p) {
-- 
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