package jmslexamples;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import com.softsynth.jmsl.*;
import com.softsynth.jmsl.view.TextAreaOut;

/**
 * BehavioralColDemo.java
 * 
 * Two jobs stuffed into a SequentialCollection, then launched. Each job has its
 * own timing and repeat count. The collection chooses one of these two jobs to
 * fire every time it repeats by acting "behaviorally".
 * 
 * @author Nick Didkovsky and Phil Burk, (c) 2003 all rights reserved
 */
/*
 * (C) 1997 Phil Burk and Nick Didkovsky, All Rights Reserved JMSL is based upon
 * HMSL (C) Phil Burk, Larry Polansky and David Rosenboom
 */
public class BehavioralColDemo extends java.applet.Applet implements ActionListener {

    TextJob tj1;
    TextJob tj2;
    SequentialCollection col; // a collection to hold both jobs
    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);

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

        add(textArea);

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

    void buildHierarchy() {
        // constructor method has a place to draw, a message, and a repeat delay
        tj1 = new TextJob(canvas1, "This job, when chosen, changes color 3 times per second", 0.3333);
        tj1.addRepeatPlayable(new FlasherFunction());
        tj1.setRepeats(6);
        tj2 = new TextJob(canvas2, "This job, when chosen, changes color every second", 1.0);
        tj2.addRepeatPlayable(new FlasherFunction());
        tj2.setRepeats(2);

        JMSL.setSTDOut(new TextAreaOut(textArea));

        col = new SequentialCollection(tj1, tj2);
        col.setBehavior(new UniformRandomBehavior()); // uniformly random
        // selection of one child
        // every repeat
        col.setRepeats(30);
        col.addStartPlayable(new MessagePrinter("STARTS"));
        col.addRepeatPlayable(new MessagePrinter("REPEATS"));
        col.addStopPlayable(new MessagePrinter("STOPS"));
        col.print();
    }

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

    void handleStart() {
        handleStopCol();
        col.launch(JMSL.now());
        startButton.setEnabled(false);
        stopButton.setEnabled(true);
    }

    public void stop() {
        synchronized (JMSL.class) {
            handleStopCol();
            JMSL.scheduler.stop();
        }
    }


    private void handleStopCol() {
        col.finish();
        try {
            col.waitForDone();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        startButton.setEnabled(true);
        stopButton.setEnabled(false);
    }

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

    public static void main(String args[]) {
        BehavioralColDemo applet = new BehavioralColDemo();
        Frame f = new Frame("Behavioral Collection Demo");
        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(600, 600);
        f.setVisible(true);
    }
}