code: /*--------------------------------------------------------------*
    Copyright (C) 2006-2015 OpenSim Ltd.
  
    This file is distributed WITHOUT ANY WARRANTY. See the file
    'License' for details on this and other legal matters.
  *--------------------------------------------------------------*/
  
  package org.omnetpp.launch;
  
  
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IStatus;
  import org.eclipse.core.runtime.Status;
  import org.eclipse.core.runtime.jobs.IJobManager;
  import org.eclipse.core.runtime.jobs.Job;
  import org.eclipse.jface.resource.ImageDescriptor;
  import org.eclipse.swt.graphics.Image;
  import org.eclipse.ui.plugin.AbstractUIPlugin;
  import org.osgi.framework.BundleContext;
  
  /**
   * The activator class controls the plug-in life cycle
   *
   * @author rhornig
   */
  public class LaunchPlugin extends AbstractUIPlugin {
  
      // The plug-in ID
      public static String PLUGIN_ID;
  
      // The shared instance
      private static LaunchPlugin plugin;
  
      /**
       * The constructor
       */
      public LaunchPlugin() {
      }
  
      /*
       * (non-Javadoc)
       * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
       */
      @Override
      public void start(BundleContext context) throws Exception {
          super.start(context);
          plugin = this;
          PLUGIN_ID = getBundle().getSymbolicName();
      }
  
      /*
       * (non-Javadoc)
       * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
       */
      @Override
      public void stop(BundleContext context) throws Exception {
          // cancel all running jobs and wait for them to finish before continuing with shutdown
          IJobManager jobMan = Job.getJobManager();
          jobMan.cancel(SimulationLauncherJob.SIMULATION_JOB_FAMILY);
          jobMan.join(SimulationLauncherJob.SIMULATION_JOB_FAMILY, null);
  
          plugin = null;
          super.stop(context);
      }
  
      /**
       * Returns the shared instance
       */
      public static LaunchPlugin getDefault() {
          return plugin;
      }
  
      /**
       * Returns an image descriptor for the image file at the given
       * plug-in relative path.
       */
      public static ImageDescriptor getImageDescriptor(String path) {
          return imageDescriptorFromPlugin(PLUGIN_ID, path);
      }
  
      public static CoreException wrapIntoCoreException(String message, Throwable exception) {
          return new CoreException(new Status(IStatus.ERROR, PLUGIN_ID, 0, message, exception));
      }
  
      /**
       * Creates an image. IMPORTANT: The image is NOT cached! Callers
       * are responsible for disposal of the image.
       */
      public static Image getImage(String path) {
          return getImageDescriptor(path).createImage();
      }
  
      public static void logError(Throwable exception) {
          logError(exception.toString(), exception);
      }
  
      public static void logError(String message, Throwable exception) {
          if (plugin != null) {
              plugin.getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, 0, message, exception));
          }
          else {
              System.err.println(message);
              exception.printStackTrace();
          }
      }
  }
  