/*
 *  JFLAP - Formal Languages and Automata Package
 * 
 * 
 *  Susan H. Rodger
 *  Computer Science Department
 *  Duke University
 *  August 27, 2009

 *  Copyright (c) 2002-2009
 *  All rights reserved.

 *  JFLAP is open source software. Please see the LICENSE for terms.
 *
 */





package gui.action;

import gui.environment.EnvironmentFrame;
import gui.environment.Universe;

import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

import javax.swing.KeyStroke;

/**
 * This action handles quitting.
 * 
 * @author Thomas Finley
 */

public class QuitAction extends RestrictedAction {
	/**
	 * Instantiates a new <CODE>QuitAction</CODE>.
	 */
	public QuitAction() {
		super("Quit", null);
		putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_Q,
				MAIN_MENU_MASK));
	}

	/**
	 * This begins the process of quitting. If this method returns, you know it
	 * did not succeed. Quitting may not succeed if there is an unsaved document
	 * and the user elects to cancel the process.
	 */
	public static void beginQuit() {
		EnvironmentFrame[] frames = Universe.frames();
		for (int i = 0; i < frames.length; i++)
			if (!frames[i].close())
				return;
		
		//modified by Moti Ben-Ari
		if (gui.Main.getDontQuit())
			NewAction.closeNew();
		else
			System.exit(0);
		
	}

	/**
	 * In repsonding to events, it cycles through all registered windows in the
	 * <CODE>gui.environment.Universe</CODE> and closes them all, or at least
	 * until the user does something that stops a close, at which point the quit
	 * terminates.
	 */
	public void actionPerformed(ActionEvent e) {
		beginQuit();
	}
}