Activator.java

/*******************************************************************************
 * Copyright (c) 2011 - 2012 Siamak Haschemi & Benjamin Haupt
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/

package de.bht.fpa.mail.s000000.common.internal;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle.
 */
public class Activator extends AbstractUIPlugin {

  // The plug-in ID
  public static final String PLUGIN_ID = "de.bht.fpa.mail.common"; //$NON-NLS-1$

  // The shared instance
  private static Activator instance;

  /**
   * The constructor.
   */
  public Activator() {
  }

  /*
   * (non-Javadoc)
   * 
   * @see
   * org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext
   * )
   */
  @Override
  public void start(BundleContext context) throws Exception {
    super.start(context);
    instance = this;
  }

  /*
   * (non-Javadoc)
   * 
   * @see
   * org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
   * )
   */
  @Override
  public void stop(BundleContext context) throws Exception {
    instance = null;
    super.stop(context);
  }

  /**
   * Returns the shared instance.
   * 
   * @return the shared instance
   */
  public static Activator getInstance() {
    return instance;
  }

  /**
   * Returns an image descriptor for the image file at the given plug-in
   * relative path.
   * 
   * @param path
   *          the path
   * @return the image descriptor
   */
  public static ImageDescriptor getImageDescriptor(String path) {
    return imageDescriptorFromPlugin(PLUGIN_ID, path);
  }

  /**
   * Logs an {@link Exception} to the eclipse workbench.
   * 
   * @param e
   *          the {@link Exception} to log
   */
  public static void logException(Exception e) {
    if (getInstance() == null) {
      final Writer result = new StringWriter();
      e.printStackTrace(new PrintWriter(result));
      System.err.println(result.toString());
    } else {
      getInstance().getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, -1, e.getMessage(), e));
    }
  }
}