//********************************************************************
//  Doodle.java       Author: Lewis and Loftus
//
//  Demonstrates the use of GUI components.
//********************************************************************

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

public class Doodle extends Applet implements ActionListener
{
   private int APPLET_WIDTH = 300;
   private int APPLET_HEIGHT = 250;

   private Label titleLabel;
   private DoodleCanvas canvas;
   private Button clearButton;

   //-----------------------------------------------------------------
   //  Creates the GUI components and adds them to the applet. The
   //  applet serves as the listener for the button.
   //-----------------------------------------------------------------
   public void init ()
   {
      titleLabel = new Label ("Doodle using the mouse.");
      titleLabel.setBackground (Color.cyan);
      add (titleLabel);

      canvas = new DoodleCanvas();
      add (canvas);

      clearButton = new Button("Clear");
      clearButton.addActionListener (this);
      add (clearButton);

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

   //-----------------------------------------------------------------
   //  Clears the canvas when the clear button is pushed.
   //-----------------------------------------------------------------
   public void actionPerformed (ActionEvent event)
   {
      canvas.clear();
   }
}