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 044package org.jfree.ui; 045 046import javax.swing.text.AttributeSet; 047import javax.swing.text.BadLocationException; 048import javax.swing.text.PlainDocument; 049 050/** 051 * A document for editing integers. 052 * 053 * @author Andrzej Porebski 054 */ 055public 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}