/*
 
 MIDIVIDIN
 
 Mart Karu
 karu@metal.ee
 
 
 */

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

class Midiplayer extends JFrame {
	
	
	int tempo = 500;
	int[][] looData = new int[6][16];
	Vector nupud = new Vector();

	String[] instrumendid = {"Bassdrumm", "Soolotrumm", "Hat", "Taldrik", "Tom1", "Tom2"};
	JComboBox inst = new JComboBox(instrumendid);	

	JCheckBox cb1 = new JCheckBox();
	JCheckBox cb2 = new JCheckBox();
	JCheckBox cb3 = new JCheckBox();
	JCheckBox cb4 = new JCheckBox();
	JCheckBox cb5 = new JCheckBox();
	JCheckBox cb6 = new JCheckBox();
	JCheckBox cb7 = new JCheckBox();
	JCheckBox cb8 = new JCheckBox();
	JCheckBox cb9 = new JCheckBox();
	JCheckBox cb10 = new JCheckBox();
	JCheckBox cb11 = new JCheckBox();
	JCheckBox cb12 = new JCheckBox();
	JCheckBox cb13 = new JCheckBox();
	JCheckBox cb14 = new JCheckBox();
	JCheckBox cb15 = new JCheckBox();
	JCheckBox cb16 = new JCheckBox();
	
	Mangija m = null;
	
	public Midiplayer() {
		
		m = new Mangija(this);
		
		addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				dispose();
				System.exit(0);
			}
		});
		
		getContentPane().setLayout(null);
		
		cb1.setBounds(10,10,20,20);
		cb2.setBounds(30,10,20,20);
		cb3.setBounds(50,10,20,20);
		cb4.setBounds(70,10,20,20);
		
		cb5.setBounds(100,10,20,20);
		cb6.setBounds(120,10,20,20);
		cb7.setBounds(140,10,20,20);
		cb8.setBounds(160,10,20,20);
		
		cb9.setBounds(190,10,20,20);
		cb10.setBounds(210,10,20,20);
		cb11.setBounds(230,10,20,20);
		cb12.setBounds(250,10,20,20);
		
		cb13.setBounds(280,10,20,20);
		cb14.setBounds(300,10,20,20);
		cb15.setBounds(320,10,20,20);
		cb16.setBounds(340,10,20,20);
		
		getContentPane().add(cb1, BorderLayout.CENTER);
		getContentPane().add(cb2, BorderLayout.CENTER);
		getContentPane().add(cb3, BorderLayout.CENTER);
		getContentPane().add(cb4, BorderLayout.CENTER);
		getContentPane().add(cb5, BorderLayout.CENTER);
		getContentPane().add(cb6, BorderLayout.CENTER);
		getContentPane().add(cb7, BorderLayout.CENTER);
		getContentPane().add(cb8, BorderLayout.CENTER);
		getContentPane().add(cb9, BorderLayout.CENTER);
		getContentPane().add(cb10, BorderLayout.CENTER);
		getContentPane().add(cb11, BorderLayout.CENTER);
		getContentPane().add(cb12, BorderLayout.CENTER);
		getContentPane().add(cb13, BorderLayout.CENTER);
		getContentPane().add(cb14, BorderLayout.CENTER);
		getContentPane().add(cb15, BorderLayout.CENTER);
		getContentPane().add(cb16, BorderLayout.CENTER);
		
		nupud.add(cb1);
		nupud.add(cb2);
		nupud.add(cb3);
		nupud.add(cb4);
		nupud.add(cb5);
		nupud.add(cb6);
		nupud.add(cb7);
		nupud.add(cb8);
		nupud.add(cb9);
		nupud.add(cb10);
		nupud.add(cb11);
		nupud.add(cb12);
		nupud.add(cb13);
		nupud.add(cb14);
		nupud.add(cb15);
		nupud.add(cb16);
		
		CheckBoxListener myListener = new CheckBoxListener(this);
    	cb1.addItemListener(myListener);
    	cb2.addItemListener(myListener);
    	cb3.addItemListener(myListener);
    	cb4.addItemListener(myListener);
    	cb5.addItemListener(myListener);
    	cb6.addItemListener(myListener);
    	cb7.addItemListener(myListener);
    	cb8.addItemListener(myListener);
    	cb9.addItemListener(myListener);
    	cb10.addItemListener(myListener);
    	cb11.addItemListener(myListener);
    	cb12.addItemListener(myListener);
    	cb13.addItemListener(myListener);
    	cb14.addItemListener(myListener);
    	cb15.addItemListener(myListener);
    	cb16.addItemListener(myListener);
		
		
 		inst.setBounds(10,40, 200, 20);
 		
 		inst.addActionListener(new ActionListener() {
 			
    		public void actionPerformed(ActionEvent e) {
        		
        		JComboBox temp = (JComboBox)e.getSource();
        		vahetaInstrumenti(temp.getSelectedIndex());
        		
    		}
		});

 		
 		getContentPane().add(inst);
 		
 		JScrollBar SbTempo = new JScrollBar(JScrollBar.HORIZONTAL, 100, 100, 100, 1000);
 		SbTempo.setBounds(220, 40, 300, 20);
 		
 		SbTempo.addAdjustmentListener(new AdjustmentListener() {
 			
    		public void adjustmentValueChanged(AdjustmentEvent e) {
        		
        		JScrollBar temp = (JScrollBar)e.getSource();
        		tempo = temp.getValue();
        		
    		}
		}); 		
 		
		getContentPane().add(SbTempo);
 		
		initLugu();
		vahetaInstrumenti(0);
		
		m.start();
		
	}
	
	void vahetaInstrumenti(int instrument) {
		
		for(int j=0;j<16;j++)
			((JCheckBox)nupud.get(j)).setSelected(looData[instrument][j]==1);
		
		
	}
	
	void initLugu() {
		
		for(int i=0;i<6;i++)
		for(int j=0;j<16;j++)
		looData[i][j]=0;
			
		
	}
	
	void setNote(int note, int val) {
		
		looData[inst.getSelectedIndex()][note] = val;
		
	}
	

	public static void main(String args[]) {
		System.out.println("Käivitame midimängijat...");
		Midiplayer mainFrame = new Midiplayer();
		mainFrame.setSize(400, 400);
		mainFrame.setTitle("Midiplayer");
		mainFrame.setVisible(true);
	}
}

class Mangija extends Thread{
	
	Midiplayer mp = null;
	boolean isRunning = true;
	
	Synthesizer synt = null;
	MidiChannel kanal = null;

	int biit = 0;
	
	int[] instrud ={36, 40, 42, 49, 45, 47};


	Mangija(Midiplayer mpIn) {
		
	    try {
	    	synt=MidiSystem.getSynthesizer();
    		synt.open();
    		kanal=synt.getChannels()[9];
    	} catch(Exception e){}
		mp = mpIn;
		
	}
	
	public void run() {
		
		while(isRunning) {
			
			for(int i=0;i<6;i++)
			{
				if(mp.looData[i][biit]==1) {
			
		    		kanal.noteOn(instrud[i], 100);
    			
	    		}	
    		}
    		biit++;
    		if (biit>15) biit = 0;
			try{Thread.sleep(mp.tempo);} catch (Exception e) {}
			
			
		}
	    synt.close();
		
	}
	
}

class CheckBoxListener implements ItemListener {
	
	Midiplayer mp = null;
	
	CheckBoxListener(Midiplayer mpIn) {
		
		mp = mpIn;
		
	}
	
    public void itemStateChanged(ItemEvent e) {

        Object source = e.getItemSelectable();
		
		if (e.getStateChange() == ItemEvent.DESELECTED) {

        	if (source == mp.cb1) mp.setNote(0, 0);
    		else if (source == mp.cb2) mp.setNote(1,0);
    		else if (source == mp.cb3) mp.setNote(2,0);
    		else if (source == mp.cb4) mp.setNote(3,0);
    		else if (source == mp.cb5) mp.setNote(4,0);
    		else if (source == mp.cb6) mp.setNote(5,0);
    		else if (source == mp.cb7) mp.setNote(6,0);
    		else if (source == mp.cb8) mp.setNote(7,0);
    		else if (source == mp.cb9) mp.setNote(8,0);
    		else if (source == mp.cb10) mp.setNote(9,0);
    		else if (source == mp.cb11) mp.setNote(10,0);
    		else if (source == mp.cb12) mp.setNote(11,0);
    		else if (source == mp.cb13) mp.setNote(12,0);
    		else if (source == mp.cb14) mp.setNote(13,0);
    		else if (source == mp.cb15) mp.setNote(14,0);
    		else if (source == mp.cb16) mp.setNote(15,0);
    		
    	} else {
    		
        	if (source == mp.cb1) mp.setNote(0, 1);
    		else if (source == mp.cb2) mp.setNote(1,1);
    		else if (source == mp.cb3) mp.setNote(2,1);
    		else if (source == mp.cb4) mp.setNote(3,1);
    		else if (source == mp.cb5) mp.setNote(4,1);
    		else if (source == mp.cb6) mp.setNote(5,1);
    		else if (source == mp.cb7) mp.setNote(6,1);
    		else if (source == mp.cb8) mp.setNote(7,1);
    		else if (source == mp.cb9) mp.setNote(8,1);
    		else if (source == mp.cb10) mp.setNote(9,1);
    		else if (source == mp.cb11) mp.setNote(10,1);
    		else if (source == mp.cb12) mp.setNote(11,1);
    		else if (source == mp.cb13) mp.setNote(12,1);
    		else if (source == mp.cb14) mp.setNote(13,1);
    		else if (source == mp.cb15) mp.setNote(14,1);
    		else if (source == mp.cb16) mp.setNote(15,1);

    	}

    }
}