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Java > Open Source Codes > org > jfree > chart > editor > ChartEditorManager


1 /* ===========================================================
2  * JFreeChart : a free chart library for the Java(tm) platform
3  * ===========================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jfreechart/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * -----------------------
28  * ChartEditorManager.java
29  * -----------------------
30  * (C) Copyright 2005, by Object Refinery Limited.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): ;
34  *
35  * $Id: ChartEditorManager.java,v 1.1.2.2 2005/11/28 15:19:32 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 24-Nov-2005 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.chart.editor;
44
45 import org.jfree.chart.JFreeChart;
46
47 /**
48  * The central point for obtaining {@link ChartEditor} instances for editing
49  * charts. Right now, the API is minimal - the plan is to extend this class
50  * to provide customisation options for chart editors (for example, make some
51  * editor items read-only).
52  */
53 public class ChartEditorManager {
54
55     /** This factory creates new {@link ChartEditor} instances as required. */
56     static ChartEditorFactory factory = new DefaultChartEditorFactory();
57     
58     /**
59      * Private constructor prevents instantiation.
60      */
61     private ChartEditorManager() {
62         // nothing to do
63 }
64     
65     /**
66      * Returns the current factory.
67      *
68      * @return The current factory (never <code>null</code>).
69      */
70     public static ChartEditorFactory getChartEditorFactory() {
71         return factory;
72     }
73     
74     /**
75      * Sets the chart editor factory.
76      *
77      * @param f the new factory (<code>null</code> not permitted).
78      */
79     public static void setChartEditorFactory(ChartEditorFactory f) {
80         if (f == null) {
81             throw new IllegalArgumentException JavaDoc("Null 'f' argument.");
82         }
83         factory = f;
84     }
85     
86     /**
87      * Returns a component that can be used to edit the given chart.
88      *
89      * @param chart the chart.
90      *
91      * @return The chart editor.
92      */
93     public static ChartEditor getChartEditor(JFreeChart chart) {
94         return factory.createEditor(chart);
95     }
96 }
97
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