import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.*;

public class
Key extends Component implements MouseListener
{
	private final AudioClip	myAudioClip;
	private final Dimension	mySize = new Dimension( 15, 70 );
	private final int	myKeyCode;
	private boolean		iAmPressed = false;

	Key( int freq, int keyCode, Applet applet )
	{
		myAudioClip = applet.getAudioClip(
				applet.getDocumentBase(),
				String.valueOf( freq ) + ".au");
		myKeyCode = keyCode;
		setBounds( new Rectangle( mySize ) );
		setForeground( Color.black );
		if( myAudioClip instanceof AudioClip )
			setBackground( new Color( 240, 240, 235 ) );
		else
			setBackground( Color.darkGray );
		addMouseListener( this );
	}
/*
	public void
	processEvent( AWTEvent e )
	{
System.err.println( "Key event " + e.toString() );
		super.processEvent( e );
	}
*/
	public void
	mousePressed( MouseEvent e )		// MouseListener method
	{
		if( !isPressed() )
		{
			play( true );
			setKeyPressed( true );
		}
	}
	public void
	mouseReleased( MouseEvent e )		// MouseListener method
	{
		if( isPressed() )
		{
			play( false );
			setKeyPressed( false );
		}
	}
	public void
	mouseClicked( MouseEvent e ){}		// MouseListener method
	public void
	mouseEntered( MouseEvent e ){}		// MouseListener method
	public void
	mouseExited( MouseEvent e ){}		// MouseListener method

	public boolean
	isPressed()
	{
		return iAmPressed;
	}
	public void
	play( boolean yes )
	{
		if( myAudioClip instanceof AudioClip )
		{
			if( yes )
			{
				if( !iAmPressed )
					myAudioClip.loop();
			}
			else
				myAudioClip.stop();
		}
	}
	public void
	setKeyPressed( boolean pressed )
	{
		iAmPressed = pressed;
		repaint();
	}
	public final int
	keyCode()
	{
		return myKeyCode;
	}
	public void
	paint( Graphics g )			// Component method
	{
		if( isVisible() )
		{
			Shape		clip = g.getClip();
			Rectangle	r = getBounds();

			super.paint( g );
			g.setClip( 0, 0, r.width, r.height );
			g.setColor( Color.black );
			drawBorder( g );
			g.setColor( Color.black );
			g.drawString( KeyEvent.getKeyText( myKeyCode ), 4, r.height - 4 );
			g.setClip( clip );
		}
	}
	private void
	drawBorder( Graphics g )
	{
		final Color	hi = iAmPressed ? Color.darkGray : Color.white,
				lo = iAmPressed ? Color.white : Color.darkGray;
		final Rectangle	b = getBounds();
		b.x = b.y = 0;
		g.setColor( getBackground() );
		g.fillRect( b.x, b.y, b.width, b.height );
		g.setColor( getForeground() );
		g.drawRect( b.x, b.y, b.width, b.height );
		g.setColor( hi );
		g.drawLine( b.x + 1, b.y + 1, b.x + b.width - 2, b.y + 1 );
		g.drawLine( b.x + 1, b.y + 1, b.x + 1, b.y + b.height - 2 );
		g.setColor( lo );
		g.drawLine( b.x + 2, b.y + b.height - 1, b.x + b.width - 1, b.y + b.height - 1 );
		g.drawLine( b.x + b.width - 1, b.y + 2, b.x + b.width - 1, b.y + b.height - 2 );
	}
	public Dimension
	getMinimumSize()			// Component method
	{
		return mySize;
	}
	public Dimension
	getPreferredSize()			// Component method
	{
		return mySize;
	}
}