001    /**
002     * Java Gui Builder - A library to build GUIs using an XML file.
003     * Copyright 2002, 2003 (C) François Beausoleil
004     *
005     * This library is free software; you can redistribute it and/or
006     * modify it under the terms of the GNU Lesser General Public
007     * License as published by the Free Software Foundation; either
008     * version 2.1 of the License, or (at your option) any later version.
009     *
010     * This library is distributed in the hope that it will be useful,
011     * but WITHOUT ANY WARRANTY; without even the implied warranty of
012     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
013     * Lesser General Public License for more details.
014     *
015     * You should have received a copy of the GNU Lesser General Public
016     * License along with this library; if not, write to the Free Software
017     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
018     */
019    
020    package jgb.handlers.swing;
021    
022    import org.xml.sax.SAXException;
023    
024    import javax.swing.*;
025    import java.util.Map;
026    import java.util.StringTokenizer;
027    import java.util.Vector;
028    
029    public class ComboTagHandler extends AbstractControlTagHandler {
030        /**
031         * The name of the choices attribute.
032         */
033        protected static final String ATTR_CHOICES = "choices";
034    
035        protected void enterElement(Map atts) throws SAXException {
036            ComboBoxModel model = null;
037            if (atts.containsKey(ATTR_CHOICES)) {
038                String choices = atts.get(ATTR_CHOICES).toString();
039                Vector v = new Vector();
040                StringTokenizer st = new StringTokenizer(choices, ",");
041                while (st.hasMoreTokens()) {
042                    v.add(st.nextToken());
043                }
044    
045                model = new DefaultComboBoxModel(v);
046            }
047    
048            JComboBox combo = null;
049            if (model == null) {
050                combo = new JComboBox();
051            } else {
052                combo = new JComboBox(model);
053            }
054    
055            if (atts.containsKey(ATTR_ID)) {
056                putComponent(atts.get(ATTR_ID).toString(), combo);
057            }
058    
059            if (atts.containsKey(ATTR_REFLABEL)) {
060                JLabel referrent = (JLabel)getObject(atts.get(ATTR_REFLABEL).toString());
061                referrent.setLabelFor(combo);
062            }
063    
064            if (atts.containsKey(ATTR_SELECTED)) {
065                combo.setSelectedItem(atts.get(ATTR_SELECTED));
066            }
067    
068            pushCurrentControl(combo, (String)atts.get(ATTR_ID));
069        }
070    
071        protected void exitElement() throws SAXException {
072            popCurrentControl();
073        }
074    
075        protected String getDefaultPackagePrefix() {
076            return null;
077        }
078    }