/*
 *  File:  ButtonTest.java
 *
 *  Create some buttons with simple actions
 *
 *  Copyright:  Northeast Parallel Architectures Center
 *
 */


import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.*;
public class ButtonTest extends JApplet
                        implements ActionListener {

// there are three buttons labelled red, white and blue  
// this class is the event listener for the buttons

  private JButton button1, button2, button3;
  private Font f = new Font( "Serif", Font.BOLD, 24 );
  private ImageIcon icon1, icon2;
  public void init() {
    try {
      icon1=new ImageIcon(new URL("http://www.npac.syr.edu/projects/webtech/java/examples1.2/buttontest/radio.gif"));
      icon2=new ImageIcon(new  URL("http://www.npac.syr.edu/projects/webtech/java/examples1.2/buttontest/radioPressed.gif"));

    } catch (Exception e){}

    getContentPane().setLayout(new FlowLayout());
    getContentPane().setBackground( Color.white );
    getContentPane().setFont (f);

    button1 = new JButton( "Red", icon1 );
    button1.addActionListener( this );
    getContentPane().add( button1 );

    button2 = new JButton( "White", icon1 );
    button2.addActionListener( this );
    getContentPane().add( button2 );

    button3 = new JButton( "Blue", icon1 );
    button3.addActionListener( this );
    getContentPane().add( button3 );                                 

  }

  public void actionPerformed( ActionEvent event ) {
// to respond to a button click, change the background color of the applet

    String buttonLabel = event.getActionCommand();

    if ( buttonLabel.equals( "Red" ) ) {
      getContentPane().setBackground( Color.red );
      changeIcon(button1);                                                            
     } else if ( buttonLabel.equals( "White" ) ) {
      getContentPane().setBackground( Color.white );
      changeIcon(button2);                                                            
    } else if ( buttonLabel.equals( "Blue" ) ) {
      getContentPane().setBackground( Color.blue );
      changeIcon(button3);                                                            
    }
    colorButtons();
  }

  private void colorButtons() {                            
    button1.setBackground( Color.lightGray );
    button2.setBackground( Color.lightGray );
    button3.setBackground( Color.lightGray );
  }
  public void changeIcon(JButton b1)
  {
      button1.setIcon(icon1);                                                            
      button2.setIcon(icon1);                                                            
      button3.setIcon(icon1);                                                            
  	   b1.setIcon(icon2);

  }


}//end of class