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: } else {
092: setText("");
093: }
094: if (isSelected) {
095: setBackground(table.getSelectionBackground());
096: } else {
097: setBackground(null);
098: }
099: return this;
100: }
101:
102: }
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