001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, 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 * ChartEditorManager.java
029 * -----------------------
030 * (C) Copyright 2005-2008, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): ;
034 *
035 * Changes
036 * -------
037 * 24-Nov-2005 : Version 1 (DG);
038 *
039 */
040
041 package org.jfree.chart.editor;
042
043 import org.jfree.chart.JFreeChart;
044
045 /**
046 * The central point for obtaining {@link ChartEditor} instances for editing
047 * charts. Right now, the API is minimal - the plan is to extend this class
048 * to provide customisation options for chart editors (for example, make some
049 * editor items read-only).
050 */
051 public class ChartEditorManager {
052
053 /** This factory creates new {@link ChartEditor} instances as required. */
054 static ChartEditorFactory factory = new DefaultChartEditorFactory();
055
056 /**
057 * Private constructor prevents instantiation.
058 */
059 private ChartEditorManager() {
060 // nothing to do
061 }
062
063 /**
064 * Returns the current factory.
065 *
066 * @return The current factory (never <code>null</code>).
067 */
068 public static ChartEditorFactory getChartEditorFactory() {
069 return factory;
070 }
071
072 /**
073 * Sets the chart editor factory.
074 *
075 * @param f the new factory (<code>null</code> not permitted).
076 */
077 public static void setChartEditorFactory(ChartEditorFactory f) {
078 if (f == null) {
079 throw new IllegalArgumentException("Null 'f' argument.");
080 }
081 factory = f;
082 }
083
084 /**
085 * Returns a component that can be used to edit the given chart.
086 *
087 * @param chart the chart.
088 *
089 * @return The chart editor.
090 */
091 public static ChartEditor getChartEditor(JFreeChart chart) {
092 return factory.createEditor(chart);
093 }
094 }