package simple;


public class Timer {
	
	private static final int TIMER_STOPPED = -1;
	private static final int MAX_TIMEOUT = 5;
	private Machine machine;
	private int time;
	
	public Timer( Machine machine ) {
		this.machine = machine;
		this.time = TIMER_STOPPED;
		new Thread() {
			public void run() {
				while (true) {
					if (time == 0) {
						Timer.this.machine.timeout();
						time = TIMER_STOPPED;
					} else if (time > 0) {
						time--;
						try {
							sleep(1000);
						} catch (InterruptedException e) { }
					}
				}
			}
		}.start();
	}

	public void reset() {
		time = MAX_TIMEOUT;
	}
	
	public void stop() {
		time = TIMER_STOPPED;
	}
	
	public boolean isStopped() {
		return time == TIMER_STOPPED;
	}
	public boolean isRecentlyReset() {
		return time >= MAX_TIMEOUT - 1;
	}
	
}