// CS7 -
// ColorMessage displays a text message and allows the user to change the
// color of the text by clicking on a button. 

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

public class ColorMessage extends JApplet {

   public void init() {
      // colors
      final Color [] someColors = { Color.black, Color.red,
         Color.green, Color.blue, Color.magenta };

      // get access to the applet's top-level container
      Container pane = getContentPane();

      // create components
      final JButton flipButton = new JButton("Change Color");

      // flow layout just tells java to fit stuff in as it is added 
      pane.setLayout(new FlowLayout());	// java fits things in for you
      pane.add(flipButton);


      // add the listener
      flipButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            // allows you to paint in the applet, through g
            Graphics g = getGraphics();
            // randomly pick a color from the array
            setForeground(someColors[(int)(Math.random()*10) % someColors.length]);
            repaint();  // tells java to paint again
         }
      });
	  
   }  // end init()

   // this method is automatically called by java when a repaint() is called.
   // The graphics context is automatically passed in as a parameter
   // we must call the parent class ("super") paint() to make sure other 
   // components (like the button) are also painted.  If you don't call it,
   // the button is not repainted (try it!)
   public void paint(Graphics g) {
      super.paint(g);
      g.drawString("I know you are but what am I?", 20, 75);
   }

}  // end of class