/*
 * Copyright (c) 2003-2004 Christopher Lenz and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     Christopher Lenz - initial API
 * 
 * $Id: IStyleSheet.java,v 1.1 2004-09-02 18:07:11 jsurfer Exp $
 */

package net.sourceforge.phpeclipse.css.core.model;

import net.sourceforge.phpeclipse.core.model.ISourceReference;
import net.sourceforge.phpeclipse.css.core.parser.IProblemCollector;
import net.sourceforge.phpeclipse.css.core.parser.LexicalErrorException;
import net.sourceforge.phpeclipse.css.core.parser.SyntaxErrorException;

import org.eclipse.core.runtime.IAdaptable;

/**
 * 
 */
public interface IStyleSheet
	extends IAdaptable, ISourceReference {

	/**
	 * Returns the rule at the specified offset into the document.
	 * 
	 * @param offset the offset
	 * @return the rule at the offset, or <code>null</code> if no rule is found
	 *         at that position
	 */
	IRule getRuleAt(int offset);

	/**
	 * Returns the list of rules in the order they have been defined in the 
	 * style sheet.
	 * 
	 * @return the list of rules contained by the style sheet
	 */
	IRule[] getRules();

	void reconcile(IProblemCollector problemCollector)
		throws LexicalErrorException, SyntaxErrorException;

}