// ---------------------------------------
// Restricted Focus Viewer (RFV) Program
// Version 2.1
// Language: Java 2
// October, 2000
// Copyright (C) 2000  Anthony R. Jansen 
// ---------------------------------------

// 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.

// ---------------------------------------
// RFV_Time_Limit_Thread.java
//
// This class is a thread that allows a
// time limit to be placed on how long
// the stimulus can be viewed for.
// ---------------------------------------

public class RFV_Time_Limit_Thread extends Thread {

	// Need RFV so that stimulus can be updated
	// ----------------------------------------
	private	RFV	rfv;
	private	int	duration;
	private boolean	valid;

	// Constructor which accepts the RFV and time limit 
	// ------------------------------------------------
	public RFV_Time_Limit_Thread(RFV r, int dur)
	{
		rfv = r;
		duration = dur;
		valid = true;
	}

	// Interrupt if thread no longer needed
	// ------------------------------------
	public void interrupt()
	{
		valid = false;
	}

	// Thread to end trial when the time limit elapses
	// -----------------------------------------------
	public void run()
	{
		try {
			this.sleep(duration);
		}
		catch(InterruptedException e) {
			RFV_Error.die(72);
		}

		// Go on to load the next block if still valid
		// -------------------------------------------
		if (valid)
			rfv.timeLimitExpired();
	}

}