import java.util.Arrays;
import java.util.Comparator;
import java.util.concurrent.Semaphore;

public class Sorter implements Runnable {

	private Double[] values;
	private ArrayComponent component;
	private Semaphore gate;
	private static final int DELAY = 100;
	private volatile boolean run;
	private static final int VALUES_LENGTH = 10;

	// konstruise Sorter
	public Sorter(ArrayComponent comp) {
		values = new Double[VALUES_LENGTH];
		for (int i = 0; i < values.length; i++)
			values[i] = new Double(Math.random());
		this.component = comp;
		this.gate = new Semaphore(0);
		this.run = false;
	}

	// postavlja sorter u "run" mod
	public void setRun() {
		run = true;
		gate.release();
	}

	// postavlja sorter u "step" mod.Poziva se u niti za obradu dogadjaja
	public void setStep() {
		run = false;
		gate.release();
	}

	@Override
	public void run() {
		Comparator<Double> comp = new Comparator<Double>() {

			@Override
			public int compare(Double i1, Double i2) {
				component.setValues(values, i1, i2);
				try {
					if (run)
						Thread.sleep(DELAY);
					else {
						gate.acquire();
					}
				} catch (InterruptedException exception) {
					Thread.currentThread().interrupt();
				}
				return i1.compareTo(i2);
			}

		};

		Arrays.sort(values, comp);
		component.setValues(values, null, null);
		AnimationFrame.runButton.setEnabled(false);
		AnimationFrame.stepButton.setEnabled(false);

	}
}