001/* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006 * 
007 * Project Info:  http://www.jfree.org/jcommon/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 * DateCellRenderer.java
029 * ---------------------
030 * (C) Copyright 2003, 2004, by Object Refinery Limited.
031 *
032 * Original Author:  David Gilbert (for Object Refinery Limited);
033 * Contributor(s):   -;
034 *
035 * $Id: DateCellRenderer.java,v 1.6 2006/04/30 09:07:20 taqua Exp $
036 *
037 * Changes (from 26-Oct-2001)
038 * --------------------------
039 * 24-Jul-2003 : Version 1 (DG);
040 *
041 */
042
043package org.jfree.ui;
044
045import java.awt.Component;
046import java.text.DateFormat;
047
048import javax.swing.JTable;
049import javax.swing.SwingConstants;
050import javax.swing.table.DefaultTableCellRenderer;
051
052/**
053 * A table cell renderer that formats dates.
054 *
055 * @author David Gilbert
056 */
057public class DateCellRenderer extends DefaultTableCellRenderer {
058
059    /** The formatter. */
060    private DateFormat formatter;
061    
062    /**
063     * Default constructor.
064     */
065    public DateCellRenderer() {
066        this(DateFormat.getDateTimeInstance());
067    }
068    
069    /**
070     * Creates a new renderer.
071     * 
072     * @param formatter  the formatter.
073     */
074    public DateCellRenderer(final DateFormat formatter) {
075        super();
076        this.formatter = formatter;
077        setHorizontalAlignment(SwingConstants.CENTER);
078    }
079
080    /**
081     * Returns itself as the renderer. Supports the TableCellRenderer interface.
082     *
083     * @param table  the table.
084     * @param value  the data to be rendered.
085     * @param isSelected  a boolean that indicates whether or not the cell is 
086     *                    selected.
087     * @param hasFocus  a boolean that indicates whether or not the cell has 
088     *                  the focus.
089     * @param row  the (zero-based) row index.
090     * @param column  the (zero-based) column index.
091     *
092     * @return the component that can render the contents of the cell.
093     */
094    public Component getTableCellRendererComponent(final JTable table, 
095            final Object value, final boolean isSelected, 
096            final boolean hasFocus, final int row, final int column) {
097
098        setFont(null);
099        if (value != null) {
100          setText(this.formatter.format(value));
101        }
102        else {
103          setText("");
104        }
105        if (isSelected) {
106            setBackground(table.getSelectionBackground());
107        }
108        else {
109            setBackground(null);
110        }
111        return this;
112    }
113
114}