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diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/hints/HintListenerAdapter.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/hints/HintListenerAdapter.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.datastructures.hints;
+
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+
+/**
+ * A hint listener that reports all changes to the listened hint through
+ * hintChanged instead of hintChanged+hintRemoved. When the hint is removed,
+ * a null newValue will be given.
+ *
+ * <p>
+ * This class in only meant to be used in cases where it is ok for the client to
+ * receive <code>null</code> as the new hint value. In other cases clients
+ * should simply implement IHintListener.
+ * </p>
+ *
+ * @author Tuukka Lehtonen
+ */
+public abstract class HintListenerAdapter implements IHintListener {
+
+	@Override
+	public void hintRemoved(IHintObservable sender, Key key, Object oldValue) {		
+		hintChanged(sender, key, oldValue, null);
+	}
+	
+}
+