KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jfree > data > DatasetChangeEvent


1 /* ======================================
2  * JFreeChart : a free Java chart library
3  * ======================================
4  *
5  * Project Info: http://www.jfree.org/jfreechart/index.html
6  * Project Lead: David Gilbert (david.gilbert@object-refinery.com);
7  *
8  * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
9  *
10  * This library is free software; you can redistribute it and/or modify it under the terms
11  * of the GNU Lesser General Public License as published by the Free Software Foundation;
12  * either version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16  * See the GNU Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public License along with this library;
19  * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307, USA.
21  *
22  * -----------------------
23  * DatasetChangeEvent.java
24  * -----------------------
25  * (C) Copyright 2000-2003, by Object Refinery Limited.
26  *
27  * Original Author: David Gilbert (for Object Refinery Limited);
28  * Contributor(s): -;
29  *
30  * $Id: DatasetChangeEvent.java,v 1.2 2003/06/04 22:58:26 mungady Exp $
31  *
32  * Changes (from 24-Aug-2001)
33  * --------------------------
34  * 24-Aug-2001 : Added standard source header. Fixed DOS encoding problem (DG);
35  * 15-Oct-2001 : Move to new package (com.jrefinery.data.*) (DG);
36  * 22-Oct-2001 : Renamed DataSource.java --> Dataset.java etc. (DG);
37  * 11-Jun-2002 : Separated the event source from the dataset to cover the case where the dataset
38  * is changed to null in the Plot class. Updated Javadocs (DG);
39  * 04-Oct-2002 : Fixed errors reported by Checkstyle (DG);
40  *
41  */
42
43 package org.jfree.data;
44
45 /**
46  * A change event that encapsulates information about a change to a dataset.
47  *
48  * @author David Gilbert
49  */
50 public class DatasetChangeEvent extends java.util.EventObject JavaDoc {
51
52     /**
53      * The dataset that generated the change event.
54      */
55     private Dataset data;
56
57     /**
58      * Constructs a new event.
59      * <P>
60      * The source is either the dataset or the Plot class. The dataset can be
61      * null (in this case the source will be the Plot class).
62      *
63      * @param source the source of the event.
64      * @param data the dataset that generated the event.
65      */
66     public DatasetChangeEvent(Object JavaDoc source, Dataset data) {
67         super(source);
68         this.data = data;
69     }
70
71     /**
72      * Returns the dataset that generated the event.
73      *
74      * @return the dataset.
75      */
76     public Dataset getDataset() {
77         return data;
78     }
79
80 }
81
Popular Tags