001    /* ===========================================================
002     * JFreeChart : a free chart library for the Java(tm) platform
003     * ===========================================================
004     *
005     * (C) Copyright 2000-2005, 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     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025     * in the United States and other countries.]
026     *
027     * ---------------------
028     * ChartChangeEvent.java
029     * ---------------------
030     * (C) Copyright 2000-2005, by Object Refinery Limited.
031     *
032     * Original Author:  David Gilbert (for Object Refinery Limited);
033     * Contributor(s):   -;
034     *
035     * $Id: ChartChangeEvent.java,v 1.3.2.1 2005/10/25 20:42:25 mungady Exp $
036     *
037     * Changes (from 24-Aug-2001)
038     * --------------------------
039     * 24-Aug-2001 : Added standard source header. Fixed DOS encoding problem (DG);
040     * 07-Nov-2001 : Updated header (DG);
041     *               Change event type names (DG);
042     * 09-Oct-2002 : Fixed errors reported by Checkstyle (DG);
043     * 18-Feb-2005 : Changed the type from int to ChartChangeEventType (DG);
044     *
045     */
046    
047    package org.jfree.chart.event;
048    
049    import java.util.EventObject;
050    
051    import org.jfree.chart.JFreeChart;
052    
053    /**
054     * A change event that encapsulates information about a change to a chart.
055     */
056    public class ChartChangeEvent extends EventObject {
057    
058        /** The type of event. */
059        private ChartChangeEventType type;
060    
061        /** The chart that generated the event. */
062        private JFreeChart chart;
063    
064        /**
065         * Creates a new chart change event.
066         *
067         * @param source  the source of the event (could be the chart, a title, 
068         *                an axis etc.)
069         */
070        public ChartChangeEvent(Object source) {
071            this(source, null, ChartChangeEventType.GENERAL);
072        }
073    
074        /**
075         * Creates a new chart change event.
076         *
077         * @param source  the source of the event (could be the chart, a title, an 
078         *                axis etc.)
079         * @param chart  the chart that generated the event.
080         */
081        public ChartChangeEvent(Object source, JFreeChart chart) {
082            this(source, chart, ChartChangeEventType.GENERAL);
083        }
084    
085        /**
086         * Creates a new chart change event.
087         *
088         * @param source  the source of the event (could be the chart, a title, an
089                          axis etc.)
090         * @param chart  the chart that generated the event.
091         * @param type  the type of event.
092         */
093        public ChartChangeEvent(Object source, JFreeChart chart, 
094                                ChartChangeEventType type) {
095            super(source);
096            this.chart = chart;
097            this.type = type;
098        }
099    
100        /**
101         * Returns the chart that generated the change event.
102         *
103         * @return The chart that generated the change event.
104         */
105        public JFreeChart getChart() {
106            return this.chart;
107        }
108    
109        /**
110         * Sets the chart that generated the change event.
111         *
112         * @param chart  the chart that generated the event.
113         */
114        public void setChart(JFreeChart chart) {
115            this.chart = chart;
116        }
117    
118        /**
119         * Returns the event type.
120         *
121         * @return The event type.
122         */
123        public ChartChangeEventType getType() {
124            return this.type;
125        }
126    
127        /**
128         * Sets the event type.
129         *
130         * @param type  the event type.
131         */
132        public void setType(ChartChangeEventType type) {
133            this.type = type;
134        }
135    
136    }