/**
 * Bounce applet Controller
 */

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

public class Controller extends Applet {
  Model model = new Model ();
  View view = new View ();
  Panel buttonPanel = new Panel ();
  Button stepButton = new Button ("Step");

  public void init () {
    // Lay out components
    setLayout (new BorderLayout ());
    buttonPanel.add (stepButton);
    this.add (BorderLayout.SOUTH, buttonPanel);
    this.add (BorderLayout.CENTER, view);

    // Attach actions to components
    stepButton.addActionListener(new ActionListener () {
      public void actionPerformed (ActionEvent event) {model.step ();}});

    // register the view as an observer of the model
    model.addObserver(view);
    // view needs to know controller to invoke setStatus
    view.controller=this;
    }  // end init method

  public void start ( ) {
    model.xLimit = view.getSize ( ).width - model.BALL_SIZE;
    model.yLimit = view.getSize ( ).height - model.BALL_SIZE;
    repaint ();
    } // end of start method
} // end of Controller class