/*
 *  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.grammar.parse;

import gui.environment.GrammarEnvironment;
import grammar.Grammar;
import grammar.parse.*;
import javax.swing.*;
import gui.tree.*;

/**
 * This is a parse pane for LL grammars.
 * 
 * @author Thomas Finley
 */

public class LLParsePane extends ParsePane {
	/**
	 * Instantiaes a new LL parse pane.
	 * 
	 * @param environment
	 *            the grammar environment
	 * @param grammar
	 *            the augmented grammar
	 * @param table
	 *            the LL parse table
	 */
	public LLParsePane(GrammarEnvironment environment, Grammar grammar,
			LLParseTable table) {
		super(environment, grammar);
		this.table = new LLParseTable(table) {
			public boolean isCellEditable(int r, int c) {
				return false;
			}
		};
		initView();
	}

	/**
	 * Inits a parse table.
	 * 
	 * @return a table to hold the parse table
	 */
	protected JTable initParseTable() {
		tablePanel = new LLParseTablePane(table);
		return tablePanel;
	}

	/**
	 * This method is called when there is new input to parse.
	 * 
	 * @param string
	 *            a new input string
	 */
	protected void input(String string) {
		controller.initialize(string);
	}

	/**
	 * This method is called when the step button is pressed.
	 */
	protected boolean step() {
		controller.step();
        return true;
	}

	/**
	 * Inits a new tree panel. This overriding adds a selection node drawer so
	 * certain nodes can be highlighted.
	 * 
	 * @return a new display for the parse tree
	 */
	protected JComponent initTreePanel() {
		treeDrawer.setNodeDrawer(nodeDrawer);
		return super.initTreePanel();
	}

	/** The parse table. */
	final LLParseTable table;

	/** The parse table panel. */
	LLParseTablePane tablePanel;

	/** The controller object. */
	protected LLParseController controller = new LLParseController(this);

	/** The selection node drawer. */
	SelectNodeDrawer nodeDrawer = new SelectNodeDrawer();
}