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 }