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 * IntegerDocument.java
029 * --------------------
030 * (C) Copyright 2000-2004, by Andrzej Porebski.
031 *
032 * Original Author: Andrzej Porebski;
033 * Contributor(s): -;
034 *
035 * $Id: IntegerDocument.java,v 1.3 2005/11/16 15:58:41 taqua Exp $
036 *
037 * Changes (from 7-Nov-2001)
038 * -------------------------
039 * 07-Nov-2001 : Added to com.jrefinery.ui package (DG);
040 * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
041 *
042 */
043
044 package org.jfree.ui;
045
046 import javax.swing.text.AttributeSet;
047 import javax.swing.text.BadLocationException;
048 import javax.swing.text.PlainDocument;
049
050 /**
051 * A document for editing integers.
052 *
053 * @author Andrzej Porebski
054 */
055 public class IntegerDocument extends PlainDocument {
056
057 /**
058 * Inserts a string.
059 *
060 * @param i i.
061 * @param s s.
062 * @param attributes the attributes.
063 *
064 * @throws BadLocationException ??
065 */
066 public void insertString(final int i, final String s, final AttributeSet attributes)
067 throws BadLocationException {
068
069 super.insertString(i, s, attributes);
070 if (s != null && (!s.equals("-") || i != 0 || s.length() >= 2)) {
071 try {
072 Integer.parseInt(getText(0, getLength()));
073 }
074 catch (NumberFormatException e) {
075 remove(i, s.length());
076 }
077 }
078 }
079
080 }