From ccc1271c9d6657fb9dcf4cf3cb115fa0c8cb9589 Mon Sep 17 00:00:00 2001
From: Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Date: Thu, 25 Aug 2016 12:39:18 +0300
Subject: [PATCH] Fetched r33145 from svn.

refs #6475
---
 .../src/org/simantics/browsing/ui/swt/GraphExplorerToolTip.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/GraphExplorerToolTip.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/GraphExplorerToolTip.java
index 26e443103..71e9dd113 100644
--- a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/GraphExplorerToolTip.java
+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/GraphExplorerToolTip.java
@@ -42,6 +42,8 @@ public class GraphExplorerToolTip extends ToolTip {
     @Override
     protected boolean shouldCreateToolTip(Event event) {
         TreeItem treeItem = parent.getItem(new Point(event.x, event.y));
+        if (treeItem == null)
+            return false;
         GENodeQueryManager manager = new GENodeQueryManager(explorerContext, null, null, TreeItemReference.create(treeItem.getParentItem()));
         nodeContext = (NodeContext) treeItem.getData();
         labeler = manager.query(nodeContext, BuiltinKeys.SELECTED_LABELER);
-- 
2.47.1