/*
* Warning program with a Cancel button
* 
* Author: Chris Johnson (johnson@dcs.gla.ac.uk)
* Last revision date: 11/10/98
*
* Produces a simple warning on the screen.   Illustrates the
* use of a frame and of a simple event handler in AWT 1.0
* Based on an example by Judy Bishop
 */
/* 
 * 1.0 version.
 */

import java.awt.*;
public class ButtonWarning extends Frame {
	
static private final int horigap = 15;
static private final int vertigap = 10;
private Button quitButton;



public ButtonWarning (String[] message, int n) {
	setBackground(Color.white);
	setForeground(Color.black);
	
	setLayout(new FlowLayout(FlowLayout.CENTER, horigap, vertigap));
	for (int i=0; i<n; i++)
			add (new Label(message[i]));
	quitButton = new Button("Quit");
	add(quitButton);
	
}


public boolean handleEvent(Event e){

	if (e.id == Event.WINDOW_DESTROY)
	{
			System.exit(0);
	}
	return super.handleEvent(e);
}

public boolean action(Event e, Object what){
/* This relies on the fact that action is called if a Button is selected but 
*    not if the mouse simply passes over the button.
*   The what parameter varies depending on the object associated with
*   the event, in the case of a button it provides the textual label (String)
*   that is displayed on the button. 
*/
	if (e.target == quitButton)
	{
			System.exit(0);
	}
	return true;
}

   public static void main (String[] args){
	
	String[] message = {
		"WARNING",
		"Something has gone badly wrong",
		"I'd go home..."
	};
	
   	Frame f= new ButtonWarning(message, 3);

   	
   	f.setTitle("Warning");
   	f.resize(240, 100);
    f.show(true);
   }
}