    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 * ChartChangeListener.java
    029 * ------------------------
    030 * (C) Copyright 2000-2008, by Object Refinery Limited.
    031 *
    032 * Original Author:  David Gilbert (for Object Refinery Limited);
    033 * Contributor(s):   -;
    034 *
    035 * Changes (from 24-Aug-2001)
    036 * --------------------------
    037 * 24-Aug-2001 : Added standard source header. Fixed DOS encoding problem (DG);
    038 * 07-Nov-2001 : Updated header (DG);
    039 * 09-Oct-2002 : Fixed errors reported by Checkstyle (DG);
    040 * 14-Oct-2002 : Now extends java.util.EventListener (DG);
    041 *
    042 */
    043
    044package org.jfree.chart.event;
    045
    046import java.util.EventListener;
    047
    048/**
    049 * The interface that must be supported by classes that wish to receive
    050 * notification of chart events.
    051 * <P>
    052 * The {@link org.jfree.chart.ChartPanel} class registers itself with the
    053 * chart it displays, and whenever the chart changes, the panel redraws itself.
    054 *
    055 */
    056public interface ChartChangeListener extends EventListener {
    057
    058    /**
    059     * Receives notification of a chart change event.
    060     *
    061     * @param event  the event.
    062     */
    063    public void chartChanged(ChartChangeEvent event);
    064
    065}