1 /* -------------------------------------------------------------------
2 * Java source file for the class NumberDocument
3 *
4 * Copyright (c), 2002, Masahiro Takatsuka.
5 * All Rights Researved.
6 *
7 * Original Author: Masahiro Takatsuka (masa@jbeans.net)
8 * $Author: takatsukam $
9 *
10 * $Date: 2003/07/25 04:51:47 $
11 *
12 * $Id: NumberDocument.java,v 1.1.1.1 2003/07/25 04:51:47 takatsukam Exp $
13 *
14 * Reference: Document no:
15 * ___ ___
16 *
17 * To Do:
18 * ___
19 *
20 ------------------------------------------------------------------- */
21
22 /* --------------------------- Package ---------------------------- */
23 package net.jbeans.util.text;
24
25 /* ------------------ Import classes (packages) ------------------- */
26 import javax.swing.text;
27
28 /*====================================================================
29 Implementation of class NumberDocument
30 ====================================================================*/
31 /**
32 * A text document which will reject any characters that are not
33 * digits.
34 *
35 * @version $Revision: 1.1.1.1 $
36 * @author Masahiro Takatsuka (masa@jbeans.net)
37 * @see PlainDocument
38 */
39
40 public final class NumberDocument extends PlainDocument {
41 public final void insertString(int offs, String str, AttributeSet atts)
42 throws BadLocationException {
43 char ch = str.charAt(0);
44 if (!Character.isDigit(ch) &&
45 ch != '.' &&
46 ch != 'e' && ch != 'E' &&
47 ch != '-' && ch != '+') {
48 return;
49 }
50 super.insertString(offs, str, atts);
51 }
52 }
53
Save This Page