001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-present, by David Gilbert 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 * PlotChangeEvent.java
029 * --------------------
030 * (C) Copyright 2000-present, by David Gilbert.
031 *
032 * Original Author:  David Gilbert;
033 * Contributor(s):   -;
034 *
035 */
036
037package org.jfree.chart.event;
038
039import org.jfree.chart.plot.Plot;
040
041/**
042 * An event that can be forwarded to any
043 * {@link org.jfree.chart.event.PlotChangeListener} to signal a change to a
044 * plot.
045 */
046public class PlotChangeEvent extends ChartChangeEvent {
047
048    /** The plot that generated the event. */
049    private Plot plot;
050
051    /**
052     * Creates a new PlotChangeEvent.
053     *
054     * @param plot the plot that generated the event ({@code null} not 
055     *             permitted).
056     */
057    public PlotChangeEvent(Plot plot) {
058        super(plot);
059        this.plot = plot;
060    }
061
062    /**
063     * Returns the plot that generated the event (set in the constructor).
064     *
065     * @return The plot that generated the event.
066     */
067    public Plot getPlot() {
068        return this.plot;
069    }
070
071}