1 /**
2 * This file is part of the equanda project.
3 *
4 * The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
7 *
8 * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
9 * ANY KIND, either express or implied. See the License for the specific language governing rights and
10 * limitations under the License.
11 *
12 * Alternatively, the contents of this file may be used under the terms of
13 * either the GNU General Public License Version 2 or later (the "GPL"), or
14 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
15 * in which case the provisions of the GPL or the LGPL are applicable instead
16 * of those above. If you wish to allow use of your version of this file only
17 * under the terms of either the GPL or the LGPL, and not to allow others to
18 * use your version of this file under the terms of the MPL, indicate your
19 * decision by deleting the provisions above and replace them with the notice
20 * and other provisions required by the GPL or the LGPL. If you do not delete
21 * the provisions above, a recipient may use your version of this file under
22 * the terms of any one of the MPL, the GPL or the LGPL.
23 */
24
25 package org.equanda.tapestry5.translators;
26
27 import org.apache.tapestry5.*;
28 import org.apache.tapestry5.services.FormSupport;
29
30 /**
31 * Tapestry translator for boolean values
32 *
33 * @author <a href="mailto:vladimir.tkachenko@gmail.com">Vladimir Tkachenko</a>
34 * @author <a href="mailto:joachim@progs.be">Joachim Van der Auwera</a>
35 */
36 public class BooleanTranslator
37 implements Translator<Boolean>, FieldTranslator<Boolean>
38 {
39 /**
40 * Parses the client value to a boolean
41 *
42 * @throws ValidationException if the clientValue can not be parsed
43 */
44 public Boolean parseClient( Field field, String clientValue, String message ) throws ValidationException
45 {
46 try
47 {
48 return Boolean.parseBoolean( clientValue );
49 }
50 catch ( Exception ex )
51 {
52 throw new ValidationException( message );
53 }
54 }
55
56 /**
57 * Converts null to the false, non-null to a string representation.
58 */
59 public String toClient( Boolean value )
60 {
61 return value == null ? "false" : value.toString();
62 }
63
64 public Class<Boolean> getType()
65 {
66 return Boolean.class;
67 }
68
69 public String getName()
70 {
71 return "boolean";
72 }
73
74 public String getMessageKey()
75 {
76 return "boolean-format-exception";
77 }
78
79 public void render( Field field, String message, MarkupWriter markupWriter, FormSupport formSupport )
80 {
81 formSupport.addValidation( field, "boolean", message, null );
82 }
83
84 public Boolean parse( String clientValue )
85 throws ValidationException
86 {
87 return parseClient( null, clientValue, "Not parseable by BooleanTranslator" );
88 }
89
90 public void render( MarkupWriter markupWriter )
91 {
92 // @todo don't know what to do here
93 }
94 }