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