//Purpose: This applet has buttons and checkboxes that
//         are monitored with event handling.


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




public class test13b extends Applet implements ActionListener {

    Checkbox black = new Checkbox("Black", true);
    Checkbox red = new Checkbox("Red");
    Checkbox green = new Checkbox("Green");
    Checkbox blue = new Checkbox("Blue");
    Button b1,b2,b3;
    String s = new String(" ");;
 

    
    //Set background to yellow, 
    public void init() {
      Panel main_panel = new Panel();
      Panel south_panel = new Panel();
      setBackground(Color.yellow);
      setBackground(Color.yellow);
      setFont(new Font("Times Roman", Font.BOLD, 12));
      setLayout( new BorderLayout()); 
      add("North", new Label("Selection Box", Label.CENTER)); 
      //Set up main panel to be added to center of applet BorderLayout
      main_panel.setLayout(new GridLayout(1,4));
      main_panel.add(black);
      main_panel.add(red);
      main_panel.add(green);
      main_panel.add(blue);

      //Set up south panel to add to south of applet BorderLayout
      south_panel.setLayout(new GridLayout(1,3));
      south_panel.add(b1 = new Button("Clear"));
      south_panel.add(b2 = new Button("Defaults"));
      south_panel.add(b3 = new Button("Submit"));
      
      add("Center", main_panel);
      add("South", south_panel);

      //register this applet as an ActionListener for each button
      b1.addActionListener(this);
      b2.addActionListener(this);
      b3.addActionListener(this);
      
    }

   
    //Paint the current key at the current position
    public void paint(Graphics g) {
         //set drawing color
         g.setColor(Color.red);    
    }

    //Method to handle GUI events  Only respond to the buttons.
    public void actionPerformed(ActionEvent e) {
       
      //test if a button
      //   note to test others must do e.getSource() == TextField, etc.
      if (e.getSource() instanceof Button) {
          Button b = (Button) e.getSource();
          if( b.getLabel().equals("Clear") ) //set all boxes to off
            {  black.setState(false); 
               red.setState(false);
               green.setState(false);
               blue.setState(false);  }
          else if(b.getLabel().equals("Defaults") ) //set boxes to default
            {  black.setState(true); 
               red.setState(false);
               green.setState(false);
               blue.setState(false);  }
          else if(b.getLabel().equals("Submit") ) //reprot boxes
            { s = new String("Black= " + black.getState() +
                             "Red = " + red.getState() +
                             "Green = " + green.getState() +
                             "Blue = " + blue.getState());
              System.out.println(s);  }
       }
     
    }
                   



}