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

/**
  *This modal dialog signals the end of the game
  *@author John D. McGregor
  *@version 1.0
  *
  */
public class GameOverDialog extends Dialog implements ActionListener {
       protected Frame _theFrame;
       protected Button _theButton;
 
	/**
	  *The constructor sets attributes of the dialog and
	  *sets the window to be visible
	  *@param frame The owner of this dialog
	  *@param str The string to be displayed
	  *@param modal If true then modal
	  */
       public GameOverDialog(Frame frame, String str, boolean modal) {
           super (frame, str, true);
           _theButton = new Button("OK");
           _theButton.setSize(80,60); 
           _theButton.addActionListener(this);
           setSize(150,150);
           setLayout(new FlowLayout(FlowLayout.CENTER, 10, 30)) ;
           add(new Label("Click OK to exit game", Label.CENTER));
           add(_theButton);
           setVisible(true);
       }
 
	/**
	  *Method is invoked wheneverthe ActionListener detects an event
	  *@param e is the event detected
	  */
       public void actionPerformed(ActionEvent e) {
           Object source = e.getSource();  
           if (source == _theButton) 
              System.exit(0); 
       }
}