    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}