/* * Copyright (C) 2006-2007 Sun Microsystems, Inc. All rights reserved. Use is * subject to license terms. */package org.jdesktop.observablecollections;/** * Notification types from an {@code ObservableMap}. * * @author sky */public interface ObservableMapListener {    /**     * Notification that the value of an existing key has changed.     *     * @param map the {@code ObservableMap} that changed     * @param key the key     * @param lastValue the previous value     */    public void mapKeyValueChanged(ObservableMap map, Object key,                                   Object lastValue);    /**     * Notification that a key has been added.     *     * @param map the {@code ObservableMap} that changed     * @param key the key     */    public void mapKeyAdded(ObservableMap map, Object key);    /**     * Notification that a key has been removed     *     * @param map the {@code ObservableMap} that changed     * @param key the key     * @param value value for key before key was removed     */    public void mapKeyRemoved(ObservableMap map, Object key, Object value);    // PENDING: should we special case clear?}