import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.applet.AudioClip;
import java.net.URL;



    
public class JukeBoxView extends JPanel
{

    private JukeBoxController jukeBoxController;
    private SongComboBox musicCombo;

    

    class TitleLabel  extends JLabel 
    {
	TitleLabel()
	{
	    super("Java Juke Box");
	    setAlignmentX (Component.CENTER_ALIGNMENT);
	}
    }


    class SongComboBox extends JComboBox 
    {

	SongComboBox()
	{
	    super();
	    setAlignmentX (Component.CENTER_ALIGNMENT);
	    addActionListener (new ActionListener() {
		    //--------------------------------------------------------------
		    //  Stops playing the current selection (if any) and resets
		    //  the current selection to the one chosen.
		    //--------------------------------------------------------------
		    public void actionPerformed (ActionEvent event)
		    {
			jukeBoxController.setCurrent((String)(musicCombo.getItemAt(musicCombo.getSelectedIndex())));
	    
		    }
		});
	
	}
    }
    
    
	
    class SongButtonPanel extends JPanel
    {
	class PushButton extends JButton
	{
	    PushButton(String name)
	    {
		super(name);
		setBackground(Color.white);
		setMnemonic(name.charAt(0));
		addActionListener (new ActionListener() {
			public void actionPerformed (ActionEvent event)
			{
			    jukeBoxController.handleCommand(event.getActionCommand());
			}			
		    });
	    }
	}
	    


	//  Set up the buttons
	SongButtonPanel(String[] commands)
	{
	    super();
	    setLayout (new BoxLayout (this, BoxLayout.X_AXIS));
	    for (int i = 0; i < commands.length; i++) {
		add (new PushButton(commands[i]));
		add (Box.createRigidArea (new Dimension(5,0)));
	    }
	    setBackground (Color.cyan);	    
	}
    }
    

    

    //-----------------------------------------------------------------
    //  Sets up the GUI for the juke box.
    //-----------------------------------------------------------------
    public JukeBoxView(JukeBoxController jbc, String[] commands)
    {
	jukeBoxController = jbc;
	musicCombo = new SongComboBox();
	
	//  Set up this panel
	setPreferredSize (new Dimension (300, 100));
	setBackground (Color.cyan);
	setLayout (new BoxLayout (this, BoxLayout.Y_AXIS));
	add (Box.createRigidArea (new Dimension(0,5)));
	add (new TitleLabel());
	add (Box.createRigidArea (new Dimension(0,5)));
	add (musicCombo);
	add (Box.createRigidArea (new Dimension(0,5)));
	add (new SongButtonPanel(commands));
	add (Box.createRigidArea (new Dimension(0,5)));
    }

    public int getItemCount()
    {
	return musicCombo.getItemCount();
    }

    public String getSelectedItem()
    {
	return (String)(musicCombo.getSelectedItem());
    }    


    public void setSelectedIndex(int i)
    {
	musicCombo.setSelectedIndex(i);
    }
    
    
    public void addSong(String title)
    {
	musicCombo.addItem(title);
    }
	
}