From 9f0c99fef54ba18601849682a9cace860393c0d9 Mon Sep 17 00:00:00 2001
From: Marko Luukkainen <marko.luukkainen@semantum.fi>
Date: Tue, 16 Oct 2018 10:28:07 +0300
Subject: [PATCH] Adding column data to tooltip event could cause NPE

gitlab #146

Change-Id: I4ce48cc851638fd5cd38bab77763fdfec9c48ed9
(cherry picked from commit f024c0a7208e379a82f0ab51a71a123f9bb2a2bb)
---
 .../org/simantics/browsing/ui/swt/GraphExplorerToolTip.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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 0cc2e71a8..ba42e5892 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
@@ -57,7 +57,9 @@ public class GraphExplorerToolTip extends ToolTip {
             }
             x+=w;
         }
-        event.data = column.getData();
+        if (column != null)
+        	event.data = column.getData();
+        
         GENodeQueryManager manager = new GENodeQueryManager(explorerContext, null, null, TreeItemReference.create(treeItem.getParentItem()));
         nodeContext = (NodeContext) treeItem.getData();
         if (nodeContext != null)
-- 
2.43.2