01: /**
02: * ===========================================
03: * JFreeReport : a free Java reporting library
04: * ===========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * NumericDocument.java
27: * ------------
28: * (C) Copyright 2001-2007, by Object Refinery Ltd, Pentaho Corporation and Contributors.
29: */package org.jfree.report.modules.gui.commonswing;
30:
31: import javax.swing.text.AttributeSet;
32: import javax.swing.text.BadLocationException;
33: import javax.swing.text.PlainDocument;
34:
35: /**
36: * Creation-Date: 29.10.2007, 18:44:24
37: *
38: * @author Thomas Morgner
39: */
40: public class NumericDocument extends PlainDocument {
41: private StringBuffer buffer;
42:
43: public NumericDocument() {
44: this .buffer = new StringBuffer();
45: }
46:
47: public void insertString(final int offs, final String str,
48: final AttributeSet a) throws BadLocationException {
49: buffer.delete(0, buffer.length());
50: final char[] chars = str.toCharArray();
51: for (int i = 0; i < chars.length; i++) {
52: final char aChar = chars[i];
53: if (Character.isDigit(aChar)) {
54: buffer.append(aChar);
55: }
56: }
57: if (buffer.length() > 0) {
58: super .insertString(offs, buffer.toString(), a);
59: }
60: }
61:
62: public void replace(final int offset, final int length,
63: final String text, final AttributeSet attrs)
64: throws BadLocationException {
65: buffer.delete(0, buffer.length());
66: final char[] chars = text.toCharArray();
67: for (int i = 0; i < chars.length; i++) {
68: final char aChar = chars[i];
69: if (Character.isDigit(aChar)) {
70: buffer.append(aChar);
71: }
72: }
73: if (buffer.length() > 0) {
74: super.remove(offset, length);
75: super.insertString(offset, buffer.toString(), attrs);
76: }
77: }
78: }
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