/*
 * @(#)StyleManager.java
 *
 * Copyright (c) 1996-2010 by the original authors of JHotDraw and all its
 * contributors. All rights reserved.
 *
 * You may not use, copy or modify this file, except in compliance with the 
 * license agreement you entered into with the copyright holders. For details
 * see accompanying license terms.
 *
 * Original code taken from article "Swing and CSS" by Joshua Marinacci 10/14/2003
 * http://today.java.net/pub/a/today/2003/10/14/swingcss.html
 */

package org.jhotdraw.xml.css;

import java.util.*;
import net.n3.nanoxml.*;
import org.jhotdraw.util.ReversedList;
import org.w3c.dom.Element;
/**
 * StyleManager applies styling Rules to an XML DOM.
 * This class supports net.n3.nanoxml as well as org.w3c.dom.
 * 
 * @author Werner Randelshofer
 * @version $Id: StyleManager.java 718 2010-11-21 17:49:53Z rawcoder $
 */
public class StyleManager {
    private java.util.List rules;
    
    public StyleManager() {
        rules = new ArrayList();
    }
    
    public void add(CSSRule rule) {
        rules.add(rule);
    }
    
    public void applyStylesTo(Element elem) {
        for (CSSRule rule : rules) {
            if(rule.matches(elem)) {
                rule.apply(elem);
            }
        }
    }
    public void applyStylesTo(IXMLElement elem) {
        for (CSSRule rule : new ReversedList(rules)) {
            if(rule.matches(elem)) {
                //System.out.println("StyleManager applying "+rule+" to "+elem);
                rule.apply(elem);
            }
        }
    }

    public void clear() {
        rules.clear();
    }
}