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 }