001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2009, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * --------------------------
028 * OverlayChangeListener.java
029 * --------------------------
030 * (C) Copyright 2009, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * Changes:
036 * --------
037 * 09-Apr-2009 : Version 1 (DG);
038 *
039 */
040
041 package org.jfree.chart.event;
042
043 import java.util.EventListener;
044 import org.jfree.chart.panel.Overlay;
045
046 /**
047 * A listener for changes to an {@link Overlay}.
048 *
049 * @since 1.0.13
050 */
051 public interface OverlayChangeListener extends EventListener {
052
053 /**
054 * This method is called to notify a listener of a change event.
055 *
056 * @param event the event.
057 */
058 public void overlayChanged(OverlayChangeEvent event);
059
060 }