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 * NumberCellRenderer.java 029 * ----------------------- 030 * (C) Copyright 2000-2004, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: NumberCellRenderer.java,v 1.6 2006/04/30 09:07:20 taqua Exp $ 036 * 037 * Changes (from 26-Oct-2001) 038 * -------------------------- 039 * 26-Oct-2001 : Changed package to com.jrefinery.ui.*; 040 * 11-Mar-2002 : Updated import statements (DG); 041 * 042 */ 043 044 package org.jfree.ui; 045 046 import java.awt.Component; 047 import java.text.NumberFormat; 048 049 import javax.swing.JTable; 050 import javax.swing.SwingConstants; 051 import javax.swing.table.DefaultTableCellRenderer; 052 053 /** 054 * A table cell renderer that formats numbers with right alignment in each cell. 055 * 056 * @author David Gilbert 057 */ 058 public class NumberCellRenderer extends DefaultTableCellRenderer { 059 060 /** 061 * Default constructor - builds a renderer that right justifies the 062 * contents of a table cell. 063 */ 064 public NumberCellRenderer() { 065 super(); 066 setHorizontalAlignment(SwingConstants.RIGHT); 067 } 068 069 /** 070 * Returns itself as the renderer. Supports the TableCellRenderer interface. 071 * 072 * @param table the table. 073 * @param value the data to be rendered. 074 * @param isSelected a boolean that indicates whether or not the cell is 075 * selected. 076 * @param hasFocus a boolean that indicates whether or not the cell has 077 * the focus. 078 * @param row the (zero-based) row index. 079 * @param column the (zero-based) column index. 080 * 081 * @return the component that can render the contents of the cell. 082 */ 083 public Component getTableCellRendererComponent(final JTable table, 084 final Object value, final boolean isSelected, 085 final boolean hasFocus, final int row, final int column) { 086 087 setFont(null); 088 final NumberFormat nf = NumberFormat.getNumberInstance(); 089 if (value != null) { 090 setText(nf.format(value)); 091 } 092 else { 093 setText(""); 094 } 095 if (isSelected) { 096 setBackground(table.getSelectionBackground()); 097 } 098 else { 099 setBackground(null); 100 } 101 return this; 102 } 103 104 }