01: /*
02: * Copyright (c) 2003-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * o Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * o Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * o Neither the name of JGoodies Karsten Lentzsch nor the names of
15: * its contributors may be used to endorse or promote products derived
16: * from this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20: * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
28: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30:
31: package com.jgoodies.validation.tutorial.formatted;
32:
33: import java.text.ParseException;
34:
35: import javax.swing.InputVerifier;
36: import javax.swing.JComponent;
37: import javax.swing.JFormattedTextField;
38:
39: /**
40: * Verifies the input of a <code>JFormattedTextField</code>
41: * and checks whether the edited text is valid or not.
42: * Useful to lock focus down while the edited text is invalid.
43: *
44: * @author Karsten Lentzsch
45: * @version $Revision: 1.8 $
46: *
47: * @see JFormattedTextField
48: */
49: final class FormattedTextFieldVerifier extends InputVerifier {
50:
51: @Override
52: public boolean verify(JComponent input) {
53: JFormattedTextField ftf = (JFormattedTextField) input;
54: JFormattedTextField.AbstractFormatter formatter = ftf
55: .getFormatter();
56: if (formatter != null) {
57: String text = ftf.getText();
58: try {
59: formatter.stringToValue(text);
60: return true;
61: } catch (ParseException pe) {
62: return false;
63: }
64: }
65: return true;
66: }
67:
68: // /**
69: // * Checks and answers whether the field's input is valid.
70: // * Unlike the above implementation it commits valid values.
71: // * This is fine if the focus lost behavior is COMMIT,
72: // * but it seems to conflict with the PERSIST and REVERT modes.
73: // */
74: // public boolean verify(JComponent input) {
75: // JFormattedTextField ftf = (JFormattedTextField) input;
76: // try {
77: // ftf.commitEdit();
78: // return true;
79: // } catch (ParseException pe) {
80: // return false;
81: // }
82: // }
83:
84: @Override
85: public boolean shouldYieldFocus(JComponent input) {
86: return verify(input);
87: }
88:
89: }
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