diff --git a/org.eclipse.jdt.ui/.settings/.api_filters b/org.eclipse.jdt.ui/.settings/.api_filters
index b181190c4ad..ab29fec0ba9 100644
--- a/org.eclipse.jdt.ui/.settings/.api_filters
+++ b/org.eclipse.jdt.ui/.settings/.api_filters
@@ -137,6 +137,14 @@
+
+
+
+
+
+
+
+
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/HierarchyInformationControl.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/HierarchyInformationControl.java
index fe4cf55e3ad..33a0ae879ee 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/HierarchyInformationControl.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/HierarchyInformationControl.java
@@ -14,6 +14,8 @@
package org.eclipse.jdt.internal.ui.typehierarchy;
import java.lang.reflect.InvocationTargetException;
+import java.util.HashSet;
+import java.util.Set;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
@@ -23,6 +25,7 @@
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Tree;
+import org.eclipse.swt.widgets.Widget;
import org.eclipse.jface.bindings.TriggerSequence;
import org.eclipse.jface.bindings.keys.KeySequence;
@@ -130,7 +133,32 @@ protected TreeViewer createTreeViewer(Composite parent, int style) {
gd.heightHint= tree.getItemHeight() * 12;
tree.setLayoutData(gd);
- TreeViewer treeViewer= new TreeViewer(tree);
+ TreeViewer treeViewer= new TreeViewer(tree) {
+ private Set