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1: /* ======================================================================== 2: * JCommon : a free general purpose class library for the Java(tm) platform 3: * ======================================================================== 4: * 5: * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jcommon/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * -------------------- 28: * IntegerDocument.java 29: * -------------------- 30: * (C) Copyright 2000-2004, by Andrzej Porebski. 31: * 32: * Original Author: Andrzej Porebski; 33: * Contributor(s): -; 34: * 35: * $Id: IntegerDocument.java,v 1.3 2005/11/16 15:58:41 taqua Exp $ 36: * 37: * Changes (from 7-Nov-2001) 38: * ------------------------- 39: * 07-Nov-2001 : Added to com.jrefinery.ui package (DG); 40: * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG); 41: * 42: */ 43: 44: package org.jfree.ui; 45: 46: import javax.swing.text.AttributeSet; 47: import javax.swing.text.BadLocationException; 48: import javax.swing.text.PlainDocument; 49: 50: /** 51: * A document for editing integers. 52: * 53: * @author Andrzej Porebski 54: */ 55: public class IntegerDocument extends PlainDocument { 56: 57: /** 58: * Inserts a string. 59: * 60: * @param i i. 61: * @param s s. 62: * @param attributes the attributes. 63: * 64: * @throws BadLocationException ?? 65: */ 66: public void insertString(final int i, final String s, final AttributeSet attributes) 67: throws BadLocationException { 68: 69: super.insertString(i, s, attributes); 70: if (s != null && (!s.equals("-") || i != 0 || s.length() >= 2)) { 71: try { 72: Integer.parseInt(getText(0, getLength())); 73: } 74: catch (NumberFormatException e) { 75: remove(i, s.length()); 76: } 77: } 78: } 79: 80: }