//********************************************************************
//  Dots.java       Author: Lewis and Loftus
//
//  Demonstrates events and listeners.
//********************************************************************

import java.applet.Applet;
import java.awt.*;
// import java.awt.event.*;

public class Dots extends Applet
{
   private final int APPLET_WIDTH = 200;
   private final int APPLET_HEIGHT = 100;
   private final int RADIUS = 6;

   private Point clickPoint = null;

   //-----------------------------------------------------------------
   //  Creates a listener for mouse events for this applet.
   //-----------------------------------------------------------------
   public void init()
   {
      DotsMouseListener listener = new DotsMouseListener(this);
      addMouseListener(listener);

      setBackground (Color.black);
      setSize (APPLET_WIDTH, APPLET_HEIGHT);
   }

   //-----------------------------------------------------------------
   //  Draws the dot at the appropriate location.
   //-----------------------------------------------------------------
   public void paint (Graphics page)
   {
      page.setColor (Color.green);
      if (clickPoint != null)
         page.fillOval (clickPoint.x - RADIUS, clickPoint.y - RADIUS,
                        RADIUS * 2, RADIUS * 2);
   }

   //-----------------------------------------------------------------
   //  Sets the point at which to draw the next dot.
   //-----------------------------------------------------------------
   public void setPoint (Point point)
   {
      clickPoint = point;
   }
}