1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 *
23 * ident	"%Z%%M%	%I%	%E% SMI"
24 *
25 * Copyright (c) 1999 by Sun Microsystems, Inc.
26 * All rights reserved.
27 *
28 * pmTextField.java
29 * Extension of JTextField which accepts only 8-bit-ASCII.
30 */
31
32package com.sun.admin.pm.client;
33
34import java.awt.*;
35import java.awt.event.*;
36import javax.swing.*;
37import javax.swing.text.*;
38
39public class pmTextField extends JTextField {
40    public pmTextField(int n) {
41        this(null, n);
42    }
43
44    public pmTextField(String s) {
45        this(s, 0);
46    }
47
48    public pmTextField(String s, int n) {
49        super(s, n);
50    }
51
52    protected Document createDefaultModel() {
53        return new pmFilterDoc();
54    }
55
56    /*
57     * This doc implementation will disallow insertion of a
58     * string containing any characters which are non-8-bit-ascii.
59     */
60    private class pmFilterDoc extends PlainDocument {
61        public void insertString(int offset, String str, AttributeSet a)
62            throws BadLocationException {
63            int i, c;
64            char[] buf = str.toCharArray();
65
66            for (i = 0; i < buf.length; i++) {
67                c = (new Character(buf[i])).charValue();
68                if (c > 0x00ff)
69                    break;
70            }
71            if (i == buf.length)
72                super.insertString(offset, str, a);
73            else
74                Toolkit.getDefaultToolkit().beep();
75    }
76    }
77
78    public static void main(String args[]) {
79        JFrame f = new JFrame();
80        f.getContentPane().add(new pmTextField(20));
81        f.pack();
82        f.setVisible(true);
83        f.repaint();
84    }
85
86}
87