/*
 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.
 * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
 */

import org.w3c.css.sac.*;
import java.net.*; 

/**
 * This example count the number of property in the style rules (outside a
 * media rule).
 * @author  Philippe Le Hegaret
 */
public class DemoSAC implements DocumentHandler {
    boolean inMedia         = false;
    boolean inStyleRule     = false;
    int     propertyCounter = 0;

    public void startMedia(SACMediaList media) throws CSSException {
	inMedia = true;
    }

    public void endMedia(SACMediaList media) throws CSSException {
	inMedia = false;
    }

    public void startSelector(SelectorList patterns) throws CSSException {
	if (!inMedia) {
	    inStyleRule = true;
	    propertyCounter = 0;
	}
    }

    public void endSelector(SelectorList patterns) throws CSSException {
	if (!inMedia) {
	    System.out.println( "Found " + propertyCounter + " properties.");
	}
	inStyleRule = false;
	
    }

    public void property(String name, LexicalUnit value, boolean important)
        throws CSSException {
	if (inStyleRule) {
	    propertyCounter++;
	}
    }

    public static void main(String[] args) throws Exception {
        InputSource source = new InputSource();
	URL uri = new URL("file", null, -1, args[0]);
	InputStream stream = uri.openStream();

	source.setByteStream(stream);
	source.setURI(uri.toString());
	Parser parser = ParserFactory.makeParser();

	parser.setDocumentHandler(new DemoSAC());
	parser.parseStyleSheet(source);
	stream.close();
    }    
}