WaitCount.java

/**
 *  Catroid: An on-device visual programming system for Android devices
 *  Copyright (C) 2010-2014 The Catrobat Team
 *  (<http://developer.catrobat.org/credits>)
 *  
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *  
 *  An additional term exception under section 7 of the GNU Affero
 *  General Public License, version 3, is available at
 *  http://developer.catrobat.org/license_additional_term
 *  
 *  This program 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
 *  GNU Affero General Public License for more details.
 *  
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.catrobat.html5player.client.threading;

import com.google.gwt.user.client.Timer;

public class WaitCount {

	private final int repeatTime = 20; //in ms
	private int count = 0;
	private CatThread waitingThread;
	private Timer checkCountTimer;
	
	//##########################################################################
	
	public WaitCount(CatThread thread) {
		this.waitingThread = thread;
		
		this.checkCountTimer = new Timer() {
			
			@Override
			public void run() {
				if(count == 0) {
					this.cancel();
					waitingThread.resumeSignal();
				}
			}
			
		};
	}
	
	//##########################################################################
	
	public void await() {
		this.checkCountTimer.scheduleRepeating(this.repeatTime);
	}
	
	public void countUp() {
		this.count++;
	}
	
	public void countDown() {
		this.count--;
	}
	
	public int getCount() {
		return this.count;
	}
	
	//##########################################################################
	
}