package jmslexamples;

/**
 * JobDemo1.java
 * 
 * Two jobs launched at the same time, each with their own schedule, painting
 * independent messages in an Applet
 * 
 * @author Nick Didkovsky
 */
/*
 * (C) 1997 Phil Burk and Nick Didkovsky, All Rights Reserved JMSL is based upon
 * HMSL (C) Phil Burk, Larry Polansky and David Rosenboom.
 */

import java.awt.*;
import java.awt.event.*;
import com.softsynth.jmsl.*;
import com.softsynth.jmsl.view.*;

public class JobDemo1 extends java.applet.Applet implements ActionListener {

    TextJob tj1;
    TextJob tj2;
    DrawingCanvas canvas1; // one for Job 1
    DrawingCanvas canvas2; // one for Job 2
    TextArea textArea;
    Button startButton;
    Button stopButton;

    public void init() {
        JMSLRandom.randomize();
        canvas1 = new DrawingCanvas();
        canvas2 = new DrawingCanvas();
        textArea = new TextArea(20, 80);
        setLayout(new GridLayout(0, 1));
        add(canvas1);
        add(canvas2);
        add(textArea);

        Panel p = new Panel();
        p.add(startButton = new Button("Start"));
        p.add(stopButton = new Button("Stop"));
        stopButton.setEnabled(false);
        add(p);

        startButton.addActionListener(this);
        stopButton.addActionListener(this);

        buildJobs();
    }

    void buildJobs() {
        // constructor method has a place to draw, a message, and a repeat delay
        tj1 = new TextJob(canvas1, "This job changes color every second", 1.0);
        tj1.addRepeatPlayable(new FlasherFunction());
        tj2 = new TextJob(canvas2, "This job changes color every 2 seconds", 2.0);
        tj2.addRepeatPlayable(new FlasherFunction());
        JMSL.setSTDOut(new TextAreaOut(textArea));
        tj1.print();
        tj2.print();
    }

    public void start() {
        synchronized (JMSL.class) {
            JMSL.clock = new DefaultMusicClock();
            JMSL.scheduler = new EventScheduler();
            JMSL.scheduler.start();
        }
    }

    public void stop() {
        synchronized (JMSL.class) {
            tj1.finishAll();
            tj2.finishAll();
            try {
                tj1.waitForDone();
                tj2.waitForDone();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            JMSL.scheduler.stop();
        }
    }

    void handleStart() {
        double when = JMSL.now();
        tj1.launch(when);
        tj2.launch(when);
        stopButton.setEnabled(true);
        startButton.setEnabled(false);
    }

    void handleStop() {
        tj1.finish();
        tj2.finish();
        stopButton.setEnabled(false);
        startButton.setEnabled(true);
    }

    public void actionPerformed(ActionEvent e) {
        Object source = e.getSource();
        if (source == startButton)
            handleStart();
        if (source == stopButton)
            handleStop();
    }

    public static void main(String args[]) {
        JobDemo1 applet = new JobDemo1();
        Frame f = new Frame("Job Demo 1");
        f.addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent e) {
                System.exit(0);
            }
        });
        f.add(applet, BorderLayout.CENTER);
        applet.init();
        applet.start();
        f.setSize(800, 600);
        f.setVisible(true);
    }
}

// end applet code