001 /* ======================================================
002 * Orson : a free chart beans library based on JFreeChart
003 * ======================================================
004 *
005 * (C) Copyright 2007, by Object Refinery Limited.
006 *
007 * Project Info: not-yet-released
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 package org.jfree.beans.editors;
029
030 import java.beans.PropertyEditorSupport;
031
032 import org.jfree.beans.LegendPosition;
033
034 /**
035 * A JavaBeans property editor for the {@link LegendPosition} class.
036 */
037 public class LegendPositionEditor extends PropertyEditorSupport {
038
039 /**
040 * Returns a string representing the current value. This will be one of
041 * <code>TOP</code>, <code>BOTTOM</code>, <code>LEFT</code>,
042 * <code>RIGHT</code> and <code>NULL</code>.
043 *
044 * @return A string representing the current value.
045 */
046 public String getAsText() {
047 LegendPosition lp = (LegendPosition) getValue();
048 if (lp.equals(LegendPosition.TOP)) {
049 return "TOP";
050 }
051 else if (lp.equals(LegendPosition.BOTTOM)) {
052 return "BOTTOM";
053 }
054 else if (lp.equals(LegendPosition.LEFT)) {
055 return "LEFT";
056 }
057 else if (lp.equals(LegendPosition.RIGHT)) {
058 return "RIGHT";
059 }
060 else if (lp.equals(LegendPosition.NONE)) {
061 return "NONE";
062 }
063 throw new IllegalStateException("Bad LegendPosition.");
064 }
065
066 /**
067 * Sets the current value by parsing the supplied string.
068 *
069 * @param text the string value.
070 *
071 * @throws IllegalArgumentException if <code>text</code> is not one of
072 * the values listed in {@link #getAsText()}.
073 */
074 public void setAsText(String text) throws IllegalArgumentException {
075 if ("TOP".equals(text)) {
076 setValue(LegendPosition.TOP);
077 }
078 else if ("BOTTOM".equals(text)) {
079 setValue(LegendPosition.BOTTOM);
080 }
081 else if ("LEFT".equals(text)) {
082 setValue(LegendPosition.LEFT);
083 }
084 else if ("RIGHT".equals(text)) {
085 setValue(LegendPosition.RIGHT);
086 }
087 else if ("NONE".equals(text)) {
088 setValue(LegendPosition.NONE);
089 }
090 else {
091 throw new IllegalArgumentException("Unrecognised 'text' argument.");
092 }
093 }
094
095 /**
096 * Returns the valid string values for this property.
097 *
098 * @return The valid string values for this property.
099 */
100 public String[] getTags() {
101 return new String[] {"TOP", "BOTTOM", "LEFT", "RIGHT", "NONE"};
102 }
103
104 /**
105 * Returns a string for the property value.
106 *
107 * @return A string for the property value.
108 */
109 public String getJavaInitializationString() {
110 LegendPosition lp = (LegendPosition) getValue();
111 return "org.jfree.beans." + lp.toString();
112 }
113
114 }