1 /*
2 Copyright (C) 2000 - 2007 Grid Systems, S.A.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2, as
6 published by the Free Software Foundation.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17
18 /*
19 * Project: KernelConfigurator
20 * Created on 25-feb-2004
21 *
22 * Copyright (c)2003 Grid Systems
23 */
24 package com.gridsystems.config.tools;
25
26 import javax.swing.InputVerifier;
27 import javax.swing.JComponent;
28 import javax.swing.JTextField;
29
30 /**
31 * InputVerifier subclass that can be also used in non-Swing environments.
32 * <p>
33 * It substitutes the default verify(JComponent) method by a
34 * verify(String) method. Although not so general as its superclass, it is a
35 * valid implementation for text fields.
36 *
37 * @author <a href="mailto:rruiz@gridsystems.com">Rodrigo Ruiz Aguayo</a>
38 * @version 1.0
39 */
40 public abstract class TextVerifier extends InputVerifier {
41 /**
42 * The error message.
43 */
44 protected ErrorSupport support;
45
46 /**
47 * Creates an instance.
48 * @param support Error message support.
49 */
50 public TextVerifier(ErrorSupport support) {
51 this.support = support;
52 }
53
54 /**
55 * {@inheritDoc}
56 */
57 public boolean verify(JComponent c) {
58 boolean isValid = true;
59 if (c instanceof JTextField) {
60 JTextField field = (JTextField)c;
61 isValid = verify(field.getText());
62 }
63 return isValid;
64 }
65
66 /**
67 * Validates a text string.
68 *
69 * @param text The string to validate
70 * @return true if the text is valid
71 */
72 public abstract boolean verify(String text);
73
74 /**
75 * Shows the error message if a validation error occurs.
76 *
77 * @param id The error identifier
78 * @param add The error action
79 */
80 protected void updateError(String id, boolean add) {
81 if (this.support != null) {
82 this.support.updateError(id, add);
83 }
84 }
85
86 /**
87 * Removes from the error support manager the list of errors of this verifier.
88 * <p>
89 * This method will be used on field deactivation.
90 */
91 public abstract void cleanErrors();
92 }