demo/plugins/org.argeo.demo.i18n/src/main/java/org/argeo/demo/i18n/I18nDemoPlugin.java

   1 package org.argeo.demo.i18n;
   2
   3 import java.util.ResourceBundle;
   4
   5 import org.apache.commons.logging.Log;
   6 import org.apache.commons.logging.LogFactory;
   7 import org.eclipse.jface.resource.ImageDescriptor;
   8 import org.eclipse.ui.plugin.AbstractUIPlugin;
   9 import org.osgi.framework.BundleContext;
  10
  11 /**
  12  * The activator class controls the plug-in life cycle
  13  */
  14 public class I18nDemoPlugin extends AbstractUIPlugin {
  15         private final static Log log = LogFactory.getLog(I18nDemoPlugin.class);
  16         private ResourceBundle messages;
  17
  18         // The plug-in ID
  19         public static final String ID = "org.argeo.demo.i18n"; //$NON-NLS-1$
  20
  21         // The shared instance
  22         private static I18nDemoPlugin plugin;
  23
  24         /**
  25          * The constructor
  26          */
  27         public I18nDemoPlugin() {
  28         }
  29
  30         /*
  31          * (non-Javadoc)
  32          *
  33          * @see
  34          * org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext
  35          * )
  36          */
  37         public void start(BundleContext context) throws Exception {
  38                 super.start(context);
  39                 plugin = this;
  40                 messages = ResourceBundle.getBundle("org.argeo.demo.i18n.messages");
  41         }
  42
  43         /*
  44          * (non-Javadoc)
  45          *
  46          * @see
  47          * org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
  48          * )
  49          */
  50         public void stop(BundleContext context) throws Exception {
  51                 plugin = null;
  52                 super.stop(context);
  53         }
  54
  55         /**
  56          * Returns the shared instance
  57          *
  58          * @return the shared instance
  59          */
  60         public static I18nDemoPlugin getDefault() {
  61                 return plugin;
  62         }
  63
  64         public static ImageDescriptor getImageDescriptor(String path) {
  65                 return imageDescriptorFromPlugin(ID, path);
  66         }
  67
  68         /** Returns the internationalized label for the given key */
  69         public static String getMessage(String key) {
  70                 try {
  71                         return getDefault().messages.getString(key);
  72                 } catch (NullPointerException npe) {
  73                         log.warn(key + " not found.");
  74                         return key;
  75                 }
  76         }
  77
  78         /**
  79          * Gives access to the internationalization message bundle. Returns null in
  80          * case the ClientUiPlugin is not started (for JUnit tests, by instance)
  81          */
  82         public static ResourceBundle getMessagesBundle() {
  83                 if (getDefault() != null)
  84                         // To avoid NPE
  85                         return getDefault().messages;
  86                 else
  87                         return null;
  88         }
  89 }