plotchangeevent.java

JfreeChart 常用图表例子

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation; either version 2.1 of the License, or 
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this library; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * --------------------
 * PlotChangeEvent.java
 * --------------------
 * (C) Copyright 2000-2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: PlotChangeEvent.java,v 1.2 2005/02/09 17:12:50 mungady Exp $
 *
 * Changes (from 24-Aug-2001)
 * --------------------------
 * 24-Aug-2001 : Added standard source header. Fixed DOS encoding problem (DG);
 * 07-Nov-2001 : Updated header (DG);
 * 09-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 17-Jan-2003 : Moved plot classes to a separate package (DG);
 *
 */

package org.jfree.chart.event;

import org.jfree.chart.plot.Plot;

/**
 * An event that can be forwarded to any 
 * {@link org.jfree.chart.event.PlotChangeListener} to signal a change to a 
 * plot.
 */
public class PlotChangeEvent extends ChartChangeEvent {

    /** The plot that generated the event. */
    private Plot plot;

    /**
     * Creates a new PlotChangeEvent.
     *
     * @param plot  the plot that generated the event.
     */
    public PlotChangeEvent(Plot plot) {
        super(plot);
        this.plot = plot;
    }

    /**
     * Returns the plot that generated the event.
     *
     * @return The plot that generated the event.
     */
    public Plot getPlot() {
        return this.plot;
    }

}