001    /*
002      Copyright (C) 2004 Laurent Martelli <laurent@aopsys.com>
003      
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful, but
010      WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012      Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public
015      License along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
017      USA */
018    
019    package org.objectweb.jac.aspects.gui.swing;
020    
021    import java.util.Date;
022    import org.objectweb.jac.aspects.gui.DateHourFormat;
023    import org.objectweb.jac.core.rtti.FieldItem;
024    
025    /**
026     * A Swing viewer component for date values.
027     */
028    
029    public class TimestampViewer extends FormatViewer
030    {   
031        /**
032         * Constructs a new date viewer. 
033         */
034        public TimestampViewer(Object value, Object substance, FieldItem field) {
035            super(value,substance,field);
036        }
037    
038        Date date;
039    
040        public TimestampViewer() {
041        }
042    
043        public void setValue(Object value) {
044            if (value!=null) {
045                if (date==null) {
046                    // We initialize date here because setValue() is
047                    // called from the super constructor, before date
048                    // would be initialized by this constructor
049                    date = new Date();
050                }
051                date.setTime(((Long)value).longValue());
052                label.setText(format.format(date));
053            } else {
054                label.setText("");
055            }
056        }
057    
058        protected void initFormat(FieldItem field) {
059            format = new DateHourFormat(field);
060        }
061    }