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
028package org.jfree.beans.editors;
029
030import java.beans.PropertyEditorSupport;
031
032import org.jfree.beans.LegendPosition;
033
034/**
035 * A JavaBeans property editor for the {@link LegendPosition} class.
036 */
037public 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}