/*
 * StopWatch.java
 * Model contains the data and the state for the stopwatch
 * Created on September 11, 2001, 8:29 AM
 */


/**
 *
 * @author  Stuart Hansen
 * @version 
 */

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;


public class StopWatch extends JFrame {
    private long currentTime;   // the current time
    private long displayTime;   // the display time
    private Timer timer;        // the timer goes off every 1/100 seconds
    private State state;        // the state keeps track of whether the stopwatch
                                // is running
    public JButton startStop;
    public JButton lap;
    public JTextArea display;
    
    /** Creates new Model */
    public StopWatch() {
        super ("StopWatch");
        
        startStop = new JButton("Start/Stop");
        startStop.addActionListener(new startStopController());
        
        lap = new JButton("Lap");
        lap.addActionListener(new lapController());
        
        display = new JTextArea("00:00:0", 1, 5);
        Container c = getContentPane();
        c.setLayout (new FlowLayout () );
        c.add(startStop);
        c.add(lap);
        c.add(display);
        
        addWindowListener (
        new WindowAdapter() {
            public void windowClosing ( WindowEvent e )
            {
                System.exit ( 0 );
            }
        });
        setSize( 120, 150);

        currentTime = 0;
        displayTime = 0;
        timer = new Timer(67, new TimerHandler ());
        state = new Stopped();
        timer.setRepeats(true);
        timer.start();
        
        show();
    }

    // getters and setters for the time variables
    public long getCurrentTime () {return currentTime;}
    public void setCurrentTime (long timeArg) {currentTime = timeArg;}
    
    public long getDisplayTime () {return displayTime;}
    public void setDisplayTime (long timeArg) {
        displayTime = timeArg;
        String minutes = Long.toString((displayTime/600)%60);
        if ((displayTime/600)%60 < 10) minutes = "0"+ minutes;
        
        String seconds = Long.toString((displayTime/10%60));
        if ((displayTime/10%60) < 10) seconds = "0" + seconds;
        
        String tenths = Long.toString(displayTime%10);
        
        display.setText( minutes + ":" + seconds + ":" + tenths);
    }
    
    class TimerHandler implements ActionListener {
        public void actionPerformed (ActionEvent e) {
            state.updateTime();
        }        
    }
    
    public interface State {
        public void updateTime();
        public void startStopPushed();
        public void lapPushed();
    }
    
    public class Stopped implements State {
        public void updateTime () { }
        public void startStopPushed() {
            state = new Started();
        }
        public void lapPushed() {
            setCurrentTime(0);
            setDisplayTime(0);
        }        
    }

     public class LapAndStopped implements State {
        public void updateTime () { }
        public void startStopPushed() {
            state = new Started();
        }
        public void lapPushed() {
            setDisplayTime(getCurrentTime());
            state = new Stopped();
        }        
    }

    public class Started implements State {
        public void updateTime () {
            setCurrentTime(getCurrentTime()+1);
            setDisplayTime(getCurrentTime());
        }
        public void startStopPushed() {
            state = new Stopped();
        }
        public void lapPushed() {
            state = new LapAndStarted();
        }        
    }

    public class LapAndStarted implements State {
        public void updateTime () { 
           setCurrentTime(getCurrentTime()+1);
        }
        public void startStopPushed() {
            state = new LapAndStopped();
        }
        public void lapPushed() {
           setDisplayTime(getCurrentTime());
           state = new Started();
        }        
    }

    public class startStopController extends AbstractAction {
        public void actionPerformed (ActionEvent e) {
            state.startStopPushed();
        }
    }
    
    public class lapController extends AbstractAction {
        public void actionPerformed (ActionEvent e) {
            state.lapPushed();
        }
    }
    
    public static void main (String args []) {
        StopWatch stopwatch = new StopWatch();
    }
        
        
}