001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet;
016    
017    import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream;
018    import com.liferay.portal.kernel.log.Log;
019    import com.liferay.portal.kernel.log.LogFactoryUtil;
020    import com.liferay.portal.kernel.util.LocaleUtil;
021    import com.liferay.portal.kernel.util.ResourceBundleUtil;
022    
023    import java.io.IOException;
024    
025    import java.util.HashMap;
026    import java.util.Iterator;
027    import java.util.LinkedHashMap;
028    import java.util.Locale;
029    import java.util.Map;
030    import java.util.PropertyResourceBundle;
031    import java.util.ResourceBundle;
032    import java.util.concurrent.ConcurrentHashMap;
033    
034    import javax.servlet.http.HttpServletRequest;
035    import javax.servlet.jsp.PageContext;
036    
037    import org.apache.struts.util.RequestUtils;
038    
039    /**
040     * @author Brian Wing Shun Chan
041     */
042    public class PortletResourceBundles {
043    
044            public static String getString(Locale locale, String key) {
045                    return _instance._getString(locale, key);
046            }
047    
048            public static String getString(PageContext pageContext, String key) {
049                    return _instance._getString(pageContext, key);
050            }
051    
052            public static String getString(String languageId, String key) {
053                    return _instance._getString(languageId, key);
054            }
055    
056            public static String getString(
057                    String servletContextName, String languageId, String key) {
058    
059                    return _instance._getString(servletContextName, languageId, key);
060            }
061    
062            public static void put(
063                    String servletContextName, String languageId,
064                    ResourceBundle resourceBundle) {
065    
066                    _instance._put(servletContextName, languageId, resourceBundle);
067            }
068    
069            public static void remove(String servletContextName) {
070                    _instance._remove(servletContextName);
071            }
072    
073            private PortletResourceBundles() {
074                    _resourceBundles =
075                            new ConcurrentHashMap<String, Map<String, ResourceBundle>>(
076                                    new LinkedHashMap<String, Map<String, ResourceBundle>>());
077            }
078    
079            private ResourceBundle _getResourceBundle(
080                    Map<String, ResourceBundle> resourceBundles, String languageId) {
081    
082                    ResourceBundle resourceBundle = resourceBundles.get(languageId);
083    
084                    if (resourceBundle == null) {
085                            try {
086                                    resourceBundle = new PropertyResourceBundle(
087                                            new UnsyncByteArrayInputStream(new byte[0]));
088    
089                                    resourceBundles.put(languageId, resourceBundle);
090                            }
091                            catch (IOException ioe) {
092                                    _log.error(ioe);
093                            }
094                    }
095    
096                    return resourceBundle;
097            }
098    
099            private ResourceBundle _getResourceBundle(
100                    String servletContextName, String languageId) {
101    
102                    Map<String, ResourceBundle> resourceBundles = _getResourceBundles(
103                            servletContextName);
104    
105                    return _getResourceBundle(resourceBundles, languageId);
106            }
107    
108            private Map<String, ResourceBundle> _getResourceBundles(
109                    String servletContextName) {
110    
111                    Map<String, ResourceBundle> resourceBundles = _resourceBundles.get(
112                            servletContextName);
113    
114                    if (resourceBundles == null) {
115                            resourceBundles = new HashMap<String, ResourceBundle>();
116    
117                            _resourceBundles.put(servletContextName, resourceBundles);
118                    }
119    
120                    return resourceBundles;
121            }
122    
123            private String _getString(Locale locale, String key) {
124                    return _getString(LocaleUtil.toLanguageId(locale), key);
125            }
126    
127            private String _getString(PageContext pageContext, String key) {
128                    Locale locale = RequestUtils.getUserLocale(
129                            (HttpServletRequest)pageContext.getRequest(), null);
130    
131                    return _getString(locale, key);
132            }
133    
134            private String _getString(String languageId, String key) {
135                    return _getString(null, languageId, key);
136            }
137    
138            private String _getString(
139                    String servletContextName, String languageId, String key) {
140    
141                    if (servletContextName != null) {
142                            ResourceBundle resourceBundle = _getResourceBundle(
143                                    servletContextName, languageId);
144    
145                            return resourceBundle.getString(key);
146                    }
147    
148                    Iterator<Map.Entry<String, Map<String, ResourceBundle>>> itr =
149                            _resourceBundles.entrySet().iterator();
150    
151                    while (itr.hasNext()) {
152                            Map.Entry<String, Map<String, ResourceBundle>> entry = itr.next();
153    
154                            Map<String, ResourceBundle> resourceBundles = entry.getValue();
155    
156                            ResourceBundle resourceBundle = _getResourceBundle(
157                                    resourceBundles, languageId);
158    
159                            return ResourceBundleUtil.getString(resourceBundle, key);
160                    }
161    
162                    return null;
163            }
164    
165            private void _put(
166                    String servletContextName, String languageId,
167                    ResourceBundle resourceBundle) {
168    
169                    Map<String, ResourceBundle> resourceBundles = _getResourceBundles(
170                            servletContextName);
171    
172                    resourceBundles.put(languageId, resourceBundle);
173            }
174    
175            private void _remove(String servletContextName) {
176                    _resourceBundles.remove(servletContextName);
177            }
178    
179            private static Log _log = LogFactoryUtil.getLog(
180                    PortletResourceBundles.class);
181    
182            private static PortletResourceBundles _instance =
183                    new PortletResourceBundles();
184    
185            private Map<String, Map<String, ResourceBundle>> _resourceBundles;
186    
187    }