server/plugins/org.argeo.jcr.ui.explorer/src/main/java/org/argeo/jcr/ui/explorer/JcrExplorerPlugin.java

   1 package org.argeo.jcr.ui.explorer;
   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 JcrExplorerPlugin extends AbstractUIPlugin {
  15         private final static Log log = LogFactory.getLog(JcrExplorerPlugin.class);
  16         private ResourceBundle messages;
  17
  18         // The plug-in ID
  19         public static final String ID = "org.argeo.jcr.ui.explorer"; //$NON-NLS-1$
  20
  21         // The shared instance
  22         private static JcrExplorerPlugin plugin;
  23
  24         /**
  25          * The constructor
  26          */
  27         public JcrExplorerPlugin() {
  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
  41                                 .getBundle("org.argeo.jcr.ui.explorer.messages");
  42
  43         }
  44
  45         /*
  46          * (non-Javadoc)
  47          *
  48          * @see
  49          * org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
  50          * )
  51          */
  52         public void stop(BundleContext context) throws Exception {
  53                 plugin = null;
  54                 super.stop(context);
  55         }
  56
  57         /**
  58          * Returns the shared instance
  59          *
  60          * @return the shared instance
  61          */
  62         public static JcrExplorerPlugin getDefault() {
  63                 return plugin;
  64         }
  65
  66         public static ImageDescriptor getImageDescriptor(String path) {
  67                 return imageDescriptorFromPlugin(ID, path);
  68         }
  69
  70         /** Returns the internationalized label for the given key */
  71         public static String getMessage(String key) {
  72                 try {
  73                         return getDefault().messages.getString(key);
  74                 } catch (NullPointerException npe) {
  75                         log.warn(key + " not found.");
  76                         return key;
  77                 }
  78         }
  79
  80         /**
  81          * Gives access to the internationalization message bundle. Returns null in
  82          * case the ClientUiPlugin is not started (for JUnit tests, by instance)
  83          */
  84         public static ResourceBundle getMessagesBundle() {
  85                 if (getDefault() != null)
  86                         // To avoid NPE
  87                         return getDefault().messages;
  88                 else
  89                         return null;
  90         }
  91
  92 }