    001/* ===========================================================
    002 * JFreeChart : a free chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C) Copyright 2000-2011, 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 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025 * Other names may be trademarks of their respective owners.]
    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
    041package org.jfree.chart.event;
    042
    043import java.util.EventListener;
    044import org.jfree.chart.panel.Overlay;
    045
    046/**
    047 * A listener for changes to an {@link Overlay}.
    048 *
    049 * @since 1.0.13
    050 */
    051public 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}