Adding column data to tooltip event could cause NPE

gitlab #146

Change-Id: I4ce48cc851638fd5cd38bab77763fdfec9c48ed9
(cherry picked from commit f024c0a7208e379a82f0ab51a71a123f9bb2a2bb)

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 0cc2e71a8c768ddce6c08a2a85cb648794b0a4e5..ba42e58927464122a0a9df43c8665cedaf69737a 100644 (file)
--- 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)