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Java > Open Source Codes > org > jfree > ui > IntegerDocument


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 JavaDoc;
47 import javax.swing.text.BadLocationException JavaDoc;
48 import javax.swing.text.PlainDocument JavaDoc;
49
50 /**
51  * A document for editing integers.
52  *
53  * @author Andrzej Porebski
54  */
55 public class IntegerDocument extends PlainDocument JavaDoc {
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 JavaDoc s, final AttributeSet JavaDoc attributes)
67         throws BadLocationException JavaDoc {
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 JavaDoc e) {
75                 remove(i, s.length());
76             }
77         }
78     }
79
80 }
81
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