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reacTIVision is a computer vision application framework for the fast and robust tracking of markers attached on physical objects, and the creation of multi-touch surfaces.
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/*
 TUIO Java backend - part of the reacTIVision project
 http://reactivision.sourceforge.net/
 
 Copyright (c) 2005-2009 Martin Kaltenbrunner 
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 
 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 General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package TUIO;

/**
 * The TuioListener interface provides a simple callback infrastructure which is used by the {@link TuioClient} class 
 * to dispatch TUIO events to all registered instances of classes that implement the TuioListener interface defined here. 
 * Any class that implements the TuioListener interface is required to implement all of the callback methods defined here.
 * The {@link TuioClient} makes use of these interface methods in order to dispatch TUIO events to all registered TuioListener implementations.

 * 
 * public class MyTuioListener implements TuioListener

 * ...
 * MyTuioListener listener = new MyTuioListener();

 * TuioClient client = new TuioClient();

 * client.addTuioListener(listener);

 * client.start();

 * 
 *
 * @author Martin Kaltenbrunner
 * @version 1.4
 */
public interface TuioListener {
	
	/**
	 * This callback method is invoked by the TuioClient when a new TuioObject is added to the session.   
	 *
	 * @param  tobj  the TuioObject reference associated to the addTuioObject event
	 */
	public void addTuioObject(TuioObject tobj);

	/**
	 * This callback method is invoked by the TuioClient when an existing TuioObject is updated during the session.   
	 *
	 * @param  tobj  the TuioObject reference associated to the updateTuioObject event
	 */
	public void updateTuioObject(TuioObject tobj);

	/**
	 * This callback method is invoked by the TuioClient when an existing TuioObject is removed from the session.   
	 *
	 * @param  tobj  the TuioObject reference associated to the removeTuioObject event
	 */
	public void removeTuioObject(TuioObject tobj);
	
	/**
	 * This callback method is invoked by the TuioClient when a new TuioCursor is added to the session.   
	 *
	 * @param  tcur  the TuioCursor reference associated to the addTuioCursor event
	 */
	public void addTuioCursor(TuioCursor tcur);

	/**
	 * This callback method is invoked by the TuioClient when an existing TuioCursor is updated during the session.   
	 *
	 * @param  tcur  the TuioCursor reference associated to the updateTuioCursor event
	 */
	public void updateTuioCursor(TuioCursor tcur);

	/**
	 * This callback method is invoked by the TuioClient when an existing TuioCursor is removed from the session.   
	 *
	 * @param  tcur  the TuioCursor reference associated to the removeTuioCursor event
	 */
	public void removeTuioCursor(TuioCursor tcur);
	
	/**
	 * This callback method is invoked by the TuioClient to mark the end of a received TUIO message bundle.   
	 *
	 * @param  ftime  the TuioTime associated to the current TUIO message bundle
	 */
	public void refresh(TuioTime ftime);
}