import javax.sound.sampled.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Pannal extends JPanel implements ActionListener{
    Line line = null;
    Mixer mixer = null;

    JComboBox mixerCombo = new JComboBox();
    JComboBox sourceCombo = new JComboBox();


    Pannal(){
	//super();

	Mixer.Info[] inf = AudioSystem.getMixerInfo();

	//initialize mixerCombo
	mixerCombo.setActionCommand("mixerCombo");
	for(int n=0; n<inf.length; n++){
	    mixerCombo.addItem(inf[n]);
	}
	mixerCombo.addActionListener(this);
	add(mixerCombo);

	//initialize sourceCombo
	sourceCombo.setActionCommand("sourceCombo");
	sourceCombo.addActionListener(this);
	add(sourceCombo);
    }

    public static void main(String[] args) {
	/*
	Mixer.Info[] inf = AudioSystem.getMixerInfo();
	for(int n=0; n<inf.length; n++){
	    System.out.println( n + ":" + inf[n].toString() );
	    Line.Info[] lineinf = AudioSystem.getMixer(inf[n]).getSourceLineInfo();
	    for(int m=0; m<lineinf.length; m++){
		System.out.println("  " + lineinf[m].toString() );
	    }
	}
	System.out.println("Done!");
	System.exit(0);
	*/
	JFrame f = new JFrame("Pannal");
	f.addWindowListener(new WindowAdapter(){
		public void windowClosing(WindowEvent e){
		    System.exit(0);
		}
	    });
	f.getContentPane().add(new Pannal());
	f.pack();
	f.show();
    }

    public void actionPerformed(ActionEvent e){
	if(e.getActionCommand().equals("mixerCombo")){
	    try{
	    sourceCombo.removeAllItems();
	    mixer = AudioSystem.getMixer((Mixer.Info)mixerCombo.getSelectedItem());
	    if(mixer != null){
		Line.Info[] lines = mixer.getSourceLineInfo();
		for(int m=0; m<lines.length; m++){
		    sourceCombo.addItem(lines[m]);
		}

	    }//end if mixer not null
	    }catch(Exception ex){
		System.out.println(ex.toString());
	    }
	}else if(e.getActionCommand().equals("sourceCombo")){
	    if(mixer != null){
		try{
		    line = mixer.getLine((Line.Info)sourceCombo.getSelectedItem());
		}catch(LineUnavailableException ex){
		    System.out.println(ex.toString());
		}
	    }//end if(mixer != null)
	}
    }//end of ActionPerformed
}