content: //  Copyright 2006, Clark N. Hobbie
  //
  //  This file is part of the util library.
  //
  //  The util library is free software; you can redistribute it and/or modify it
  //  under the terms of the Lesser GNU General Public License as published by
  //  the Free Software Foundation; either version 2.1 of the License, or (at
  //  your option) any later version.
  //
  //  The util library is distributed in the hope that it will be useful, but
  //  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  //  or FITNESS FOR A PARTICULAR PURPOSE.  See the Lesser GNU General Public
  //  License for more details.
  //
  //  You should have received a copy of the Lesser GNU General Public License
  //  along with the util library; if not, write to the Free Software Foundation,
  //  Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  //
  package com.lts;
  
  import com.lts.event.Callback;
  
  
  public class Suspender implements Callback
  {
  	protected Callback myCallback;
  	
  	public Suspender ()
  	{
  		this.myCallback = null;
  	}
  	
  	public Suspender (Callback callback)
  	{
  		this.myCallback = callback;
  	}
  	
  	public void callback (Object o)
  	{
  		this.resume();
  	}
  	
  	synchronized public void suspendThrowsExceptions () throws InterruptedException
  	{
  		this.wait();
  	}
  	
  	public void suspend()
  	{
  		try
  		{
  			this.suspendThrowsExceptions();
  			
  			if (null != myCallback)
  				myCallback.callback(this);
  		}
  		catch (InterruptedException e)
  		{
  			
  		}
  	}
  	
  	synchronized public void resume () 
  	{
  		this.notify();
  	}
  }
  