// Marquee.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Marquee extends JApplet implements ActionListener {

    private int animationDelay;  // millisecond delay.  from PARAM
    private Timer animationTimer;     // Timer drives animation
    private String msg;          //from PARAM in HTML file
    private int count;

   // respond to Timer's event
   public void actionPerformed( ActionEvent actionEvent )
   {
      repaint(); // repaint animator
   }

   // start or restart animation
   public void startAnimation()
   {
      if ( animationTimer == null ) {
         animationTimer = new Timer( animationDelay, this );
         animationTimer.start();
      }
      else // continue from last image displayed
         if ( ! animationTimer.isRunning() )
            animationTimer.restart();
   }

   // stop animation timer
   public void stopAnimation()
   {
      animationTimer.stop();
   }

    public void init() {
	msg = getParameter( "message" );   //from PARAM in HTML file
	animationDelay = Integer.parseInt( getParameter( "delay" ) );

	startAnimation();  // begin animation
   } 

    public void paint (Graphics g) {
	super.paint(g);

	char ch = msg.charAt(0);
	msg = msg.substring(1,msg.length());
	msg += ch;
	g.setFont( new Font( "Helvetica", Font.BOLD, 20 ) );
	g.drawString( msg, 30, 30 );

	count++;
	if (count == 10)
	    resize( getWidth()*2, getHeight()/2 );  //only in appletviewer?
    }
}