import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import javax.sound.midi.*;
public class Akordion5 extends JApplet implements MouseListener{
   int algtoon=68; //Ab, akordioni nuppude vasak serv
   int kogus=12;
   int nupuvahe=50;
   int vasak=10;
   int yla=10;
   int nupudiameeter=30;
   final int kvint=7;
   JButton[][] nupud=new JButton[2][kogus];
   Synthesizer synt;
   MidiChannel kanal;
   int valjus=100;
   public Akordion5(){
    try{
     synt=MidiSystem.getSynthesizer();
	 synt.open();
	 kanal=synt.getChannels()[0];
	 getContentPane().setLayout(null);	 
	 for(int i=0; i<kogus; i++){
	    int toon=algtoon+i*kvint;
		while(toon>72){toon-=12;}
	    nupud[0][i]=new AkordioniNupp(toon-12, "/");
	    nupud[1][i]=new AkordioniNupp(toon);
     }
	 for(int i=0; i<kogus; i++){
	  for(int rida=0; rida<nupud.length; rida++){
		nupud[rida][i].setBounds(vasak+i*nupuvahe, yla+rida*nupuvahe, 
		   nupudiameeter, nupudiameeter);
		getContentPane().add(nupud[rida][i]);
		nupud[rida][i].addMouseListener(this);
	  }
	 }
	} catch(Exception ex){ex.printStackTrace();}
   }

   public void mangiKolmkola(int algnoot){
     kanal.noteOn(algnoot   ,valjus);
     kanal.noteOn(algnoot+4 ,valjus);
     kanal.noteOn(algnoot+7 ,valjus);
   }
   public void mousePressed(MouseEvent e){
      AkordioniNupp nupp=(AkordioniNupp)e.getSource();
	  if(nupp.kysiTyyp().equals("")){
  	    mangiKolmkola(nupp.kysiPohitoon());
	  }
	  if(nupp.kysiTyyp().equals("/")){
	    kanal.noteOn(nupp.kysiPohitoon(), valjus);
	  }
   }
   public void mouseReleased(MouseEvent e){
      kanal.allNotesOff();
   }
   public void mouseClicked(MouseEvent e){}
   public void mouseEntered(MouseEvent e){}
   public void mouseExited(MouseEvent e){}
   public static void main(String[] arg){
     JFrame f=new JFrame();
	 f.add(new Akordion5());
	 f.setSize(300, 300);
	 f.setVisible(true);
   }
}