LaunchManagerProxy.java :  » IDE-Eclipse » debug » org » eclipse » debug » internal » ui » viewers » update » Java Open Source

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/*******************************************************************************
 * Copyright (c) 2005, 2008 IBM Corporation and others.
 * 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
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.debug.internal.ui.viewers.update;

import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchManager;
import org.eclipse.debug.core.ILaunchesListener2;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IModelDelta;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.ModelDelta;
import org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy;
import org.eclipse.jface.viewers.Viewer;

/**
 * Model proxy for launch manager.
 */
public class LaunchManagerProxy extends AbstractModelProxy implements ILaunchesListener2 {

  private ILaunchManager fLaunchManager;

  /* (non-Javadoc)
   * @see org.eclipse.debug.internal.ui.viewers.AbstractModelProxy#init(org.eclipse.debug.internal.ui.viewers.IPresentationContext)
   */
  public synchronized void init(IPresentationContext context) {
    super.init(context);
    fLaunchManager = DebugPlugin.getDefault().getLaunchManager();
    fLaunchManager.addLaunchListener(this);
  }
  
  /* (non-Javadoc)
   * @see org.eclipse.debug.internal.ui.viewers.provisional.AbstractModelProxy#installed(org.eclipse.jface.viewers.Viewer)
   */
  public void installed(Viewer viewer) {
    // expand existing launches
    ILaunch[] launches = fLaunchManager.getLaunches();
    launchesAdded(launches);
  }

  /* (non-Javadoc)
   * @see org.eclipse.debug.internal.ui.viewers.AbstractModelProxy#dispose()
   */
  public synchronized void dispose() {  
    super.dispose();
    if (fLaunchManager != null) {
      fLaunchManager.removeLaunchListener(this);
      fLaunchManager = null;
    }
  }

  /* (non-Javadoc)
   * @see org.eclipse.debug.core.ILaunchesListener2#launchesTerminated(org.eclipse.debug.core.ILaunch[])
   */
  public void launchesTerminated(ILaunch[] launches) {
  }

  /* (non-Javadoc)
   * @see org.eclipse.debug.core.ILaunchesListener#launchesRemoved(org.eclipse.debug.core.ILaunch[])
   */
  public void launchesRemoved(ILaunch[] launches) {
    fireDelta(launches, IModelDelta.REMOVED);
  }

  /* (non-Javadoc)
   * @see org.eclipse.debug.core.ILaunchesListener#launchesAdded(org.eclipse.debug.core.ILaunch[])
   */
  public void launchesAdded(ILaunch[] launches) {
    fireDelta(launches, IModelDelta.ADDED | IModelDelta.INSTALL | IModelDelta.EXPAND);
  }

  /* (non-Javadoc)
   * @see org.eclipse.debug.core.ILaunchesListener#launchesChanged(org.eclipse.debug.core.ILaunch[])
   */
  public void launchesChanged(ILaunch[] launches) {  
  }
  
  /**
   * Convenience method for firing a delta 
   * @param launches the launches to set in the delta
   * @param launchFlags the flags for the delta
   */
  protected void fireDelta(ILaunch[] launches, int launchFlags) {
    ModelDelta delta = new ModelDelta(fLaunchManager, IModelDelta.NO_CHANGE);
    for (int i = 0; i < launches.length; i++) {
      delta.addNode(launches[i], launchFlags);  
    }
    fireModelChanged(delta);    
  }

}
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