/*
 *  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 grammar.lsystem.*;
import gui.environment.LSystemEnvironment;
import gui.environment.tag.CriticalTag;
import gui.lsystem.DisplayPane;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.JOptionPane;
import javax.swing.KeyStroke;

/**
 * This action creates a new L-system renderer.
 * 
 * @author Thomas Finley
 */

public class LSystemDisplay extends LSystemAction {
	/**
	 * Instantiates a new <CODE>BruteParseAction</CODE>.
	 * 
	 * @param environment
	 *            the grammar environment
	 */
	public LSystemDisplay(LSystemEnvironment environment) {
		super(environment, "Render System", null);
		putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_D,
				MAIN_MENU_MASK));
	}

	/**
	 * Performs the action.
	 */
	public void actionPerformed(ActionEvent e) {
		LSystem lsystem = getEnvironment().getLSystem();

		if (lsystem.getAxiom().size() == 0) {
			JOptionPane.showMessageDialog(getEnvironment(),
					"The axiom must have one or more symbols.",
					"Nonempty Axiom Required", JOptionPane.ERROR_MESSAGE);
			return;
		}

		try {
			DisplayPane pane = new DisplayPane(lsystem);
			getEnvironment().add(pane, "L-S Render", new CriticalTag() {
			});
			getEnvironment().setActive(pane);
		} catch (NoClassDefFoundError ex) {
			JOptionPane
					.showMessageDialog(
							getEnvironment(),
							"Sorry, but this uses features requiring Java 1.4 or later!",
							"JVM too primitive", JOptionPane.ERROR_MESSAGE);
			return;
		}
	}

}