//FrameDemo4
//Demonstrates inner class doing all event handling
//Andy Harris, 05/00

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

public class FrameDemo4 extends Applet  {

  Frame frmHello = new Frame("Hello there!");
  Button btnShowFrame = new Button("Show Frame");
  Button btnHideFrame = new Button("Hide Frame");

  EventHandler handler = new EventHandler();
  

  public void init(){
    add(btnShowFrame);
    add(btnHideFrame);

    btnShowFrame.addActionListener(handler);
    btnHideFrame.addActionListener(handler);

    frmHello.setFont(new Font("SansSerif", Font.BOLD, 30));
    frmHello.add(new Label("Hello there!"), BorderLayout.CENTER);

    frmHello.addWindowListener(handler);
    
  } // end init
  

  public class EventHandler extends WindowAdapter implements ActionListener{

    public void actionPerformed(ActionEvent e){
      if (e.getSource() == btnShowFrame){
        frmHello.setVisible(true);
        frmHello.setSize(100,100);
        frmHello.pack();
      } else {
        frmHello.setVisible(false);
        frmHello.dispose();
      } // end if
    } // end actionPerformed

    public void windowClosing(WindowEvent e){
      frmHello.setVisible(false);
      frmHello.dispose(); 
    } // end windowClosing

  }//end EventHandler class def

} // end FrameDemo class def