package org.ggp.base.util.ui.timer;

import javax.swing.JProgressBar;

@SuppressWarnings("serial")
public final class JTimerBar extends JProgressBar
{

    private final class TimerThread extends Thread
    {

        private final long delta;
        private long time;
        private final long timeout;

        public TimerThread(long delta, long timeout)
        {
            this.delta = delta;
            this.timeout = timeout;
            time = 0;
        }

        @Override
        public synchronized void run()
        {
            try
            {
                while (time != timeout)
                {
                    time += delta;
                    wait(delta);
                    setValue((int) time);
                }
            }
            catch (InterruptedException e)
            {
                // Do nothing.
            }
        }
    }

    private TimerThread timerThread;

    public JTimerBar()
    {
        timerThread = null;
    }

    public synchronized void fill()
    {
        stop();
        this.setValue(getMaximum());
    }

    public synchronized void stop()
    {
        try
        {
            if (timerThread != null)
            {
                timerThread.interrupt();
                timerThread.join();
            }

            setValue(0);
        }
        catch (Exception e)
        {
            setIndeterminate(true);
        }
    }

    public synchronized void time(long time, int divisions)
    {
        try
        {
            stop();
            setMaximum((int) time);

            timerThread = new TimerThread(time / divisions, time);
            timerThread.start();
        }
        catch (Exception e)
        {
            setIndeterminate(true);
        }
    }
}