    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
    043    package org.jfree.ui;
    044
    045    import java.awt.Component;
    046    import java.text.DateFormat;
    047    import javax.swing.JTable;
    048    import javax.swing.SwingConstants;
    049    import javax.swing.table.DefaultTableCellRenderer;
    050
    051    /**
    052     * A table cell renderer that formats dates.
    053     *
    054     * @author David Gilbert
    055     */
    056    public 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    }