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1   /**
2    * This file Copyright (c) 2003-2014 Magnolia International
3    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
4    *
5    *
6    * This file is dual-licensed under both the Magnolia
7    * Network Agreement and the GNU General Public License.
8    * You may elect to use one or the other of these licenses.
9    *
10   * This file is distributed in the hope that it will be
11   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12   * implied warranty of MERCHANTABILITY or FITNESS FOR A
13   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14   * Redistribution, except as permitted by whichever of the GPL
15   * or MNA you select, is prohibited.
16   *
17   * 1. For the GPL license (GPL), you can redistribute and/or
18   * modify this file under the terms of the GNU General
19   * Public License, Version 3, as published by the Free Software
20   * Foundation.  You should have received a copy of the GNU
21   * General Public License, Version 3 along with this program;
22   * if not, write to the Free Software Foundation, Inc., 51
23   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24   *
25   * 2. For the Magnolia Network Agreement (MNA), this file
26   * and the accompanying materials are made available under the
27   * terms of the MNA which accompanies this distribution, and
28   * is available at http://www.magnolia-cms.com/mna.html
29   *
30   * Any modifications to this file must keep this entire header
31   * intact.
32   *
33   */
34  package info.magnolia.cms.i18n;
35  
36  import info.magnolia.context.MgnlContext;
37  import info.magnolia.objectfactory.Components;
38  
39  import java.util.Collection;
40  import java.util.Locale;
41  
42  
43  /**
44   * From this class you get the i18n messages. You should pass a request, but if you can't the getMessages method will
45   * handle it properly. The get() methods are easy to use.
46   * @version $Id$
47   */
48  public abstract class MessagesManager {
49  
50      /**
51       * Use this locale if no other provided.
52       */
53      public static final String FALLBACK_LOCALE = "en";
54  
55      /**
56       * Use this basename if no other is provided.
57       */
58      public static final String DEFAULT_BASENAME = "info.magnolia.module.admininterface.messages";
59  
60      /**
61       * The node name where the configuration for i18n is stored.
62       */
63      public static final String I18N_CONFIG_PATH = "/server/i18n/system";
64  
65      /**
66       * The name of the property to store the current system language.
67       */
68      public static final String FALLBACK_NODEDATA = "fallbackLanguage";
69  
70      /**
71       * Under this node all the available languages are stored. They are showed in the user dialog.
72       */
73      public static final String LANGUAGES_NODE_NAME = "languages";
74  
75      /**
76       * @deprecated since 4.5, use IoC !
77       */
78      public static MessagesManager getInstance() {
79          return Components.getSingleton(MessagesManager.class);
80      }
81  
82      public static Messages getMessages() {
83          return getMessages(null, getCurrentLocale());
84      }
85  
86      public static Messages getMessages(String basename) {
87          return getMessages(basename, getCurrentLocale());
88      }
89  
90      public static Messages getMessages(Locale locale) {
91          return getMessages(null, locale);
92      }
93  
94      public static Messages getMessages(String basename, Locale locale) {
95          return getInstance().getMessagesInternal(basename, locale);
96      }
97  
98      public static String get(String key) {
99          return getMessages().get(key);
100     }
101 
102     /**
103      * Get a message with parameters inside: the value {0} must be a number.
104      * @param key key to find
105      * @param args replacement strings
106      * @return message
107      */
108     public static String get(String key, Object[] args) {
109         return getMessages().get(key, args);
110     }
111 
112     /**
113      * Use a default string.
114      * @param key key to find
115      * @param defaultMsg default message
116      * @return message
117      */
118     public static String getWithDefault(String key, String defaultMsg) {
119         return getMessages().getWithDefault(key, defaultMsg);
120     }
121 
122     /**
123      * Get a message with parameters inside: the value {0} must be a number. Use a default message.
124      * @param key key to find
125      * @param args replacement strings
126      * @param defaultMsg default message
127      * @return message
128      */
129     public static String getWithDefault(String key, Object[] args, String defaultMsg) {
130         return getMessages().getWithDefault(key, args, defaultMsg);
131     }
132 
133     private static Locale getCurrentLocale() {
134         return MgnlContext.getInstance().getLocale();
135     }
136 
137     public abstract void init();
138 
139     public abstract Collection getAvailableLocales();
140 
141     public abstract Locale getDefaultLocale();
142 
143     protected abstract Messages getMessagesInternal(String basename, Locale locale);
144 
145     public abstract void reload();
146 }