content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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.wst.jsdt.internal.ui.workingsets;
  
  import org.eclipse.ui.IEditorPart;
  import org.eclipse.ui.IPageListener;
  import org.eclipse.ui.IPartListener;
  import org.eclipse.ui.IWindowListener;
  import org.eclipse.ui.IWorkbenchPage;
  import org.eclipse.ui.IWorkbenchPart;
  import org.eclipse.ui.IWorkbenchWindow;
  
  
  public abstract class EditorTracker implements IWindowListener, IPageListener, IPartListener {
  	
  	//--- Window listener
  	
  	public void windowActivated(IWorkbenchWindow window) {
  	}
  	public void windowDeactivated(IWorkbenchWindow window) {
  	}
  	public void windowClosed(IWorkbenchWindow window) {
  		window.removePageListener(this);
  	}
  	public void windowOpened(IWorkbenchWindow window) {
  		window.addPageListener(this);
  	}
  	
  	//---- IPageListener
  	
  	public void pageActivated(IWorkbenchPage page) {
  	}
  	public void pageClosed(IWorkbenchPage page) {
  		page.removePartListener(this);
  	}
  	public void pageOpened(IWorkbenchPage page) {
  		page.addPartListener(this);
  	}
  	
  	//---- Part Listener
  	
  	public void partActivated(IWorkbenchPart part) {
  	}
  	public void partBroughtToTop(IWorkbenchPart part) {
  	}
  	public void partClosed(IWorkbenchPart part) {
  		if (part instanceof IEditorPart) {
  			editorClosed((IEditorPart)part);
  		}
  	}
  	public void partDeactivated(IWorkbenchPart part) {
  	}
  	public void partOpened(IWorkbenchPart part) {
  		if (part instanceof IEditorPart) {
  			editorOpened((IEditorPart)part);
  		}
  	}
  	
  	public abstract void editorOpened(IEditorPart part);
  	
  	public abstract void editorClosed(IEditorPart part);
  	
  }
  