import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.sound.midi.*;

public class Midimangija extends Panel implements ActionListener, AdjustmentListener{

	Scrollbar level1=new Scrollbar(Scrollbar.VERTICAL, 50, 0, 0, 100);
	Scrollbar volume1=new Scrollbar(Scrollbar.VERTICAL, 50, 0, 0, 100);
	Scrollbar repeat1=new Scrollbar(Scrollbar.VERTICAL, 10, 0, 1, 50);
	Scrollbar tempo1=new Scrollbar(Scrollbar.VERTICAL, 1000, 0, 100, 10000);
	
	Label level2=new Label("Sound level:	");
	Label volume2=new Label("Volume:	");
	Label repeat2=new Label("Repeat:	");
	Label tempo2=new Label("Tempo:		");
	Button mangi=new Button("Mängi ette");
  
	int level;
	int volume;
	int repeat;
	int tempo;

	public Midimangija(){
	
		Panel p1=new Panel();
		p1.add(mangi);
		
		Panel p2=new Panel();
		p2.add(level2);
		p2.add(level1);
		p2.add(volume2);
		p2.add(volume1);
		p2.add(repeat2);
		p2.add(repeat1);
		p2.add(tempo2);
		p2.add(tempo1);
		
		setLayout(new BorderLayout());
		add(p1, BorderLayout.NORTH);
		add(p2, BorderLayout.SOUTH);
		mangi.addActionListener(this);
		level1.addAdjustmentListener(this);
		volume1.addAdjustmentListener(this);
		repeat1.addAdjustmentListener(this);
		tempo1.addAdjustmentListener(this);
	}

	public void actionPerformed(ActionEvent e){
		try{
			Synthesizer synthesizer=MidiSystem.getSynthesizer();
			synthesizer.open();
			MidiChannel kanal=synthesizer.getChannels()[0];
			for(int i=0; i<repeat; i++){
 				kanal.noteOn(level, volume);
				Thread.sleep(tempo);
				kanal.noteOff(level);
			}
		}catch(Exception ex){ex.printStackTrace();  System.out.println(ex);  }
	}

	public void adjustmentValueChanged(AdjustmentEvent e){
		level2.setText("Sound level: "+level1.getValue());
		level=level1.getValue();
		volume2.setText("Volume: "+volume1.getValue());
		volume=volume1.getValue();
		repeat2.setText("Repeat: "+repeat1.getValue());
		repeat=repeat1.getValue();
		tempo2.setText("Tempo: "+tempo1.getValue());
		tempo=tempo1.getValue();
	}

	public static void main(String[] argumendid){
		Frame f=new Frame("MidiMAKER , Version 2 , by Rünno Allikivi");
		f.add(new Midimangija());
		f.setSize(600, 200);
		f.setVisible(true);
		f.addWindowListener(new Raamikuular());
	}
}

class Raamikuular extends WindowAdapter{
	public void windowClosing(WindowEvent e){
		System.out.println(" ");
		System.exit(0);
	}
}