2 * Copyright (C) 2001, 2002 The Mir-coders group
\r
4 * This file is part of Mir.
\r
6 * Mir is free software; you can redistribute it and/or modify
\r
7 * it under the terms of the GNU General Public License as published by
\r
8 * the Free Software Foundation; either version 2 of the License, or
\r
9 * (at your option) any later version.
\r
11 * Mir is distributed in the hope that it will be useful,
\r
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
14 * GNU General Public License for more details.
\r
16 * You should have received a copy of the GNU General Public License
\r
17 * along with Mir; if not, write to the Free Software
\r
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
\r
20 * In addition, as a special exception, The Mir-coders gives permission to link
\r
21 * the code of this program with the com.oreilly.servlet library, any library
\r
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
\r
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
\r
24 * the above that use the same license as the above), and distribute linked
\r
25 * combinations including the two. You must obey the GNU General Public
\r
26 * License in all respects for all of the code used other than the above
\r
27 * mentioned libraries. If you modify this file, you may extend this exception
\r
28 * to your version of the file, but you are not obligated to do so. If you do
\r
29 * not wish to do so, delete this exception statement from your version.
\r
34 import java.util.List;
\r
35 import java.util.Locale;
\r
37 import org.apache.struts.util.MessageResources;
\r
39 import freemarker.template.SimpleScalar;
\r
40 import freemarker.template.TemplateMethodModel;
\r
41 import freemarker.template.TemplateModel;
\r
44 * A FreeMarker <code>TemplateMethodModel</code> that provides access to a
\r
45 * Struts <code>MessageResources</code>, for use in Interantionalized templates.
\r
47 * @author Kellan <kellan@protest.net>
\r
50 public class MessageMethodModel implements TemplateMethodModel {
\r
53 * The perferred locale for this instance of MessageMethod.
\r
55 private Locale locale;
\r
58 * The MessageResources to query, a single instance shared for
\r
59 * the lifetime of servlet.
\r
61 private MessageResources messages;
\r
62 private MessageResources messages2;
\r
66 * Construct a MessageMethod that uses the JVM's default locale.
\r
68 * @param message The MessageResources object to query
\r
70 public MessageMethodModel(MessageResources messages) {
\r
71 this(null, messages);
\r
75 * Construct a MessageMethod
\r
77 * @param locale a Locale object, persumably initialized
\r
78 * from users Accept-Language header field
\r
80 * @param message The MessageResources object to query
\r
82 public MessageMethodModel(Locale aLocale, MessageResources aMessages) {
\r
83 this(aLocale, aMessages, null);
\r
86 public MessageMethodModel(Locale aLocale, MessageResources aMessages,
\r
87 MessageResources aMessages2) {
\r
89 messages = aMessages;
\r
90 messages2 = aMessages2;
\r
94 * Takes the first argument as a resource key, then looks up
\r
95 * a string in the MessagesResources, based on that key, and the Locale
\r
97 * TODO: error messages should be i18n :)
\r
99 * @param arguments List passed in by FM, first arguement is a string used as the key
\r
100 * all subsequent arguments are used as described in MessageResources
\r
101 * (they are filled into the placehoders of the string being returned)
\r
103 public TemplateModel exec(List arguments) {
\r
104 if (arguments != null) {
\r
105 String key = (String) arguments.get(0);
\r
106 arguments.remove(0);
\r
107 String mesg = null;
\r
109 if (messages!=null)
\r
110 mesg = messages.getMessage(locale, key, arguments.toArray());
\r
112 if (mesg == null && messages2!=null) {
\r
113 mesg = messages2.getMessage(locale, key, arguments.toArray());
\r
116 if (mesg == null) {
\r
117 return new SimpleScalar(errUnknownTag + key);
\r
119 return new SimpleScalar(mesg);
\r
122 return missingKeyScalar;
\r
126 // i'm not real clear on how this is used - kellan :)
\r
127 public boolean isEmpty() {
\r
128 if (messages == null)
\r
134 private static String errUnknownTag = "MESSAGE NOT FOUND: ";
\r
135 private static String missingKey = "MESSAGE CALL WITHOUT KEY";
\r
136 private static SimpleScalar missingKeyScalar = new SimpleScalar(missingKey);
\r