i18n/I18nDemoPlugin.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (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
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.demo.i18n;
  17
  18 import java.util.ResourceBundle;
  19
  20 import org.apache.commons.logging.Log;
  21 import org.apache.commons.logging.LogFactory;
  22 import org.eclipse.jface.resource.ImageDescriptor;
  23 import org.eclipse.ui.plugin.AbstractUIPlugin;
  24 import org.osgi.framework.BundleContext;
  25
  26 /**
  27  * The activator class controls the plug-in life cycle
  28  */
  29 public class I18nDemoPlugin extends AbstractUIPlugin {
  30         private final static Log log = LogFactory.getLog(I18nDemoPlugin.class);
  31         private ResourceBundle messages;
  32
  33         // The plug-in ID
  34         public static final String ID = "org.argeo.demo.i18n"; //$NON-NLS-1$
  35
  36         // The shared instance
  37         private static I18nDemoPlugin plugin;
  38
  39         /**
  40          * The constructor
  41          */
  42         public I18nDemoPlugin() {
  43         }
  44
  45         /*
  46          * (non-Javadoc)
  47          *
  48          * @see
  49          * org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext
  50          * )
  51          */
  52         public void start(BundleContext context) throws Exception {
  53                 super.start(context);
  54                 plugin = this;
  55                 messages = ResourceBundle.getBundle(ID + ".messages");
  56                 // messages = ResourceBundle.getBundle(ID + ".messages", currentLocale);
  57         }
  58
  59         /*
  60          * (non-Javadoc)
  61          *
  62          * @see
  63          * org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
  64          * )
  65          */
  66         public void stop(BundleContext context) throws Exception {
  67                 plugin = null;
  68                 super.stop(context);
  69         }
  70
  71         /**
  72          * Returns the shared instance
  73          *
  74          * @return the shared instance
  75          */
  76         public static I18nDemoPlugin getDefault() {
  77                 return plugin;
  78         }
  79
  80         public static ImageDescriptor getImageDescriptor(String path) {
  81                 return imageDescriptorFromPlugin(ID, path);
  82         }
  83
  84         /** Returns the internationalized label for the given key */
  85         public static String getMessage(String key) {
  86                 try {
  87                         return getDefault().messages.getString(key);
  88                 } catch (NullPointerException npe) {
  89                         log.warn(key + " not found.");
  90                         return key;
  91                 }
  92         }
  93
  94         /**
  95          * Gives access to the internationalization message bundle. Returns null in
  96          * case the ClientUiPlugin is not started (for JUnit tests, by instance)
  97          */
  98         public static ResourceBundle getMessagesBundle() {
  99                 if (getDefault() != null)
 100                         // To avoid NPE
 101                         return getDefault().messages;
 102                 else
 103                         return null;
 104         }
 105 }