import javax.sound.midi.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class rytmiautomaat1 extends JApplet implements ActionListener{
  Sequence sequence;
  Sequencer sequencer;
  JButton nupp=new JButton("Mängi");
  JCheckBox korda=new JCheckBox("Korda");
  JScrollBar sbKordi=new JScrollBar(JScrollBar.VERTICAL, 50, 1, 1, 100);
  JScrollBar sbKorgus=new JScrollBar(JScrollBar.VERTICAL, 50, 1, 1, 100);
  JScrollBar sbValjus=new JScrollBar(JScrollBar.VERTICAL, 50, 1, 1, 100);
  JScrollBar sbTempo=new JScrollBar(JScrollBar.VERTICAL, 560, 1, 300, 1000); //paus
                      //-JScrollBar(objekt.mispidi, algv, X, minv, maxv)
  int tempo, korgus, valjus, kordi;
  
 public void init(){
      JPanel labelipaneel=new JPanel(new GridLayout(1, 4));
      labelipaneel.add(new JLabel("Kõrgus"), BorderLayout.CENTER);
      labelipaneel.add(new JLabel("Valjus"), BorderLayout.CENTER);
      labelipaneel.add(new JLabel("Tempo"), BorderLayout.CENTER);
      labelipaneel.add(new JLabel("Kordi"), BorderLayout.CENTER);
      JPanel skrollipaneel=new JPanel(new GridLayout(1, 4));
      skrollipaneel.add(sbKorgus, BorderLayout.CENTER);
      skrollipaneel.add(sbValjus, BorderLayout.CENTER);
      skrollipaneel.add(sbTempo, BorderLayout.CENTER);
      skrollipaneel.add(sbKordi, BorderLayout.CENTER);
      JPanel mangupaneel=new JPanel(new GridLayout(1, 1));
      mangupaneel.add(nupp, BorderLayout.CENTER);
      //mangupaneel.add(korda);
      korda.setSelected(true);
      JPanel alumine=new JPanel(new GridLayout(3, 1));
      alumine.add(labelipaneel);
      alumine.add(skrollipaneel);
      alumine.add(mangupaneel);
      getContentPane().add(alumine, BorderLayout.SOUTH);
      getContentPane().add(skrollipaneel, BorderLayout.CENTER);
      nupp.addActionListener(this);
      sbTempo.addAdjustmentListener(new AdjustmentListener() {
    		public void adjustmentValueChanged(AdjustmentEvent e) {
        		JScrollBar temp1 = (JScrollBar)e.getSource();
        		tempo = temp1.getValue();
    		} //-end adjustmentValueChanged
	  }); //-end SbTempo.addAdjustmentListener
	  sbValjus.addAdjustmentListener(new AdjustmentListener() {
    		public void adjustmentValueChanged(AdjustmentEvent e) {
        		JScrollBar temp2 = (JScrollBar)e.getSource();
        		valjus = (int)temp2.getValue();
    		} //-end adjustmentValueChanged
	  }); //-end SbTempo.addAdjustmentListener
	  sbKorgus.addAdjustmentListener(new AdjustmentListener() {
    		public void adjustmentValueChanged(AdjustmentEvent e) {
        		JScrollBar temp3 = (JScrollBar)e.getSource();
        		korgus = (int)temp3.getValue();
    		} //-end adjustmentValueChanged
	  }); //-end SbTempo.addAdjustmentListener
	  sbKordi.addAdjustmentListener(new AdjustmentListener() {
    		public void adjustmentValueChanged(AdjustmentEvent e) {
        		JScrollBar temp4 = (JScrollBar)e.getSource();
        		kordi = temp4.getValue();
    		} //-end adjustmentValueChanged
	  }); //-end SbTempo.addAdjustmentListene
 } //-end init

  public void actionPerformed(ActionEvent e){
   try{
      Synthesizer synthesizer=MidiSystem.getSynthesizer();
      synthesizer.open();
      MidiChannel kanal=synthesizer.getChannels()[0]; //kanal 0;
      /** kanal.programChange(helipangaNR, pilliNR) */
      for(int i=0; i<kordi; i++){
        kanal.noteOn(korgus, valjus);
        Thread.sleep(tempo);
        kanal.noteOff(korgus, valjus);
      }
   }catch(Exception ex){
     ex.printStackTrace();
     System.out.println(ex);
   }
  }

  public static void main(String argumendid[]){
    JFrame mainFreim=new JFrame("Rütmiautomaat");
    rytmiautomaat1 ap=new rytmiautomaat1();
    ap.init();
    mainFreim.getContentPane().add(ap);
    mainFreim.pack();
    mainFreim.setSize(300, 400);
    mainFreim.setVisible(true);
  }
}