X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.swt%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fswt%2FGraphExplorerToolTip.java;h=1debee624e803ae51d95622c6c983c041fc16872;hp=26e4431038d3b43da160aad78d74b9884ef572fc;hb=12468c2b3d87f61123d6429a7329d80316009fe6;hpb=96bb7ef9cbe42d82eb58306d8f9b62392cc29ba8

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..1debee624 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
@@ -42,9 +42,12 @@ 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);
+        if (nodeContext != null)
+            labeler = manager.query(nodeContext, BuiltinKeys.SELECTED_LABELER);
         if (nodeContext == null || !(labeler instanceof LabelerStub))
             return false;
         return ((LabelerStub) labeler).shouldCreateToolTip(event, nodeContext);