2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
34 import freemarker.template.SimpleScalar;
35 import freemarker.template.TemplateMethodModel;
36 import freemarker.template.TemplateModel;
37 import org.apache.struts.util.MessageResources;
39 import java.util.List;
40 import java.util.Locale;
43 * A FreeMarker <code>TemplateMethodModel</code> that provides access to a
44 * Struts <code>MessageResources</code>, for use in Interantionalized templates.
46 * @author Kellan <kellan@protest.net>
49 public class MessageMethodModel implements TemplateMethodModel {
52 * The perferred locale for this instance of MessageMethod.
54 private Locale locale;
57 * The MessageResources to query, a single instance shared for
58 * the lifetime of servlet.
60 private MessageResources messages;
64 * Construct a MessageMethod that uses the JVM's default locale.
66 * @param message The MessageResources object to query
68 public MessageMethodModel(MessageResources messages) {
73 * Construct a MessageMethod
75 * @param locale a Locale object, persumably initialized
76 * from users Accept-Language header field
78 * @param message The MessageResources object to query
80 public MessageMethodModel(Locale locale, MessageResources messages) {
82 this.messages = messages;
87 * Takes the first argument as a resource key, then looks up
88 * a string in the MessagesResources, based on that key, and the Locale
90 * TODO: error messages should be i18n :)
92 * @param arguments List passed in by FM, first arguement is a string used as the key
93 * all subsequent arguments are used as described in MessageResources
94 * (they are filled into the placehoders of the string being returned)
96 public TemplateModel exec(List arguments) {
97 if (arguments != null) {
98 String key = (String) arguments.get(0);
100 String mesg = messages.getMessage(locale, key, arguments.toArray());
103 return new SimpleScalar(errUnknownTag+key);
105 return new SimpleScalar(mesg);
108 return missingKeyScalar;
112 // i'm not real clear on how this is used - kellan :)
113 public boolean isEmpty() {
114 if (messages == null)
120 private static String errUnknownTag = "MESSAGE NOT FOUND: ";
121 private static String missingKey = "MESSAGE CALL WITHOUT KEY";
122 private static SimpleScalar missingKeyScalar =
123 new SimpleScalar(missingKey);