    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 * ChartChangeEvent.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 *               Change event type names (DG);
    040 * 09-Oct-2002 : Fixed errors reported by Checkstyle (DG);
    041 * 18-Feb-2005 : Changed the type from int to ChartChangeEventType (DG);
    042 *
    043 */
    044
    045package org.jfree.chart.event;
    046
    047import java.util.EventObject;
    048
    049import org.jfree.chart.JFreeChart;
    050
    051/**
    052 * A change event that encapsulates information about a change to a chart.
    053 */
    054public class ChartChangeEvent extends EventObject {
    055
    056    /** The type of event. */
    057    private ChartChangeEventType type;
    058
    059    /** The chart that generated the event. */
    060    private JFreeChart chart;
    061
    062    /**
    063     * Creates a new chart change event.
    064     *
    065     * @param source  the source of the event (could be the chart, a title,
    066     *                an axis etc.)
    067     */
    068    public ChartChangeEvent(Object source) {
    069        this(source, null, ChartChangeEventType.GENERAL);
    070    }
    071
    072    /**
    073     * Creates a new chart change event.
    074     *
    075     * @param source  the source of the event (could be the chart, a title, an
    076     *                axis etc.)
    077     * @param chart  the chart that generated the event.
    078     */
    079    public ChartChangeEvent(Object source, JFreeChart chart) {
    080        this(source, chart, ChartChangeEventType.GENERAL);
    081    }
    082
    083    /**
    084     * Creates a new chart change event.
    085     *
    086     * @param source  the source of the event (could be the chart, a title, an
    087                      axis etc.)
    088     * @param chart  the chart that generated the event.
    089     * @param type  the type of event.
    090     */
    091    public ChartChangeEvent(Object source, JFreeChart chart,
    092                            ChartChangeEventType type) {
    093        super(source);
    094        this.chart = chart;
    095        this.type = type;
    096    }
    097
    098    /**
    099     * Returns the chart that generated the change event.
    100     *
    101     * @return The chart that generated the change event.
    102     */
    103    public JFreeChart getChart() {
    104        return this.chart;
    105    }
    106
    107    /**
    108     * Sets the chart that generated the change event.
    109     *
    110     * @param chart  the chart that generated the event.
    111     */
    112    public void setChart(JFreeChart chart) {
    113        this.chart = chart;
    114    }
    115
    116    /**
    117     * Returns the event type.
    118     *
    119     * @return The event type.
    120     */
    121    public ChartChangeEventType getType() {
    122        return this.type;
    123    }
    124
    125    /**
    126     * Sets the event type.
    127     *
    128     * @param type  the event type.
    129     */
    130    public void setType(ChartChangeEventType type) {
    131        this.type = type;
    132    }
    133
    134}