1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.utils.datastructures.hints;
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14 import org.simantics.utils.datastructures.hints.IHintContext.Key;
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17 * A hint listener that reports all changes to the listened hint through
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18 * hintChanged instead of hintChanged+hintRemoved. When the hint is removed,
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19 * a null newValue will be given.
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22 * This class in only meant to be used in cases where it is ok for the client to
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23 * receive <code>null</code> as the new hint value. In other cases clients
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24 * should simply implement IHintListener.
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27 * @author Tuukka Lehtonen
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29 public abstract class HintListenerAdapter implements IHintListener {
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32 public void hintRemoved(IHintObservable sender, Key key, Object oldValue) {
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33 hintChanged(sender, key, oldValue, null);
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