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 1.7 2007/11/02 17:50:36 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;
047import javax.swing.JTable;
048import javax.swing.SwingConstants;
049import javax.swing.table.DefaultTableCellRenderer;
050
051/**
052 * A table cell renderer that formats dates.
053 *
054 * @author David Gilbert
055 */
056public class DateCellRenderer extends DefaultTableCellRenderer {
057
058    /** The formatter. */
059    private DateFormat formatter;
060    
061    /**
062     * Default constructor.
063     */
064    public DateCellRenderer() {
065        this(DateFormat.getDateTimeInstance());
066    }
067    
068    /**
069     * Creates a new renderer.
070     * 
071     * @param formatter  the formatter.
072     */
073    public DateCellRenderer(final DateFormat formatter) {
074        super();
075        this.formatter = formatter;
076        setHorizontalAlignment(SwingConstants.CENTER);
077    }
078
079    /**
080     * Returns itself as the renderer. Supports the TableCellRenderer interface.
081     *
082     * @param table  the table.
083     * @param value  the data to be rendered.
084     * @param isSelected  a boolean that indicates whether or not the cell is 
085     *                    selected.
086     * @param hasFocus  a boolean that indicates whether or not the cell has 
087     *                  the focus.
088     * @param row  the (zero-based) row index.
089     * @param column  the (zero-based) column index.
090     *
091     * @return the component that can render the contents of the cell.
092     */
093    public Component getTableCellRendererComponent(final JTable table, 
094            final Object value, final boolean isSelected, 
095            final boolean hasFocus, final int row, final int column) {
096
097        setFont(null);
098        if (value != null) {
099          setText(this.formatter.format(value));
100        }
101        else {
102          setText("");
103        }
104        if (isSelected) {
105            setBackground(table.getSelectionBackground());
106        }
107        else {
108            setBackground(null);
109        }
110        return this;
111    }
112
113}