/*
 * 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.
 */

package org.w3c.dom.css_bad;

import org.w3c.dom.Element;
import org.w3c.dom.stylesheets.DocumentStyle;

/**
 * This interface represents a document with a CSS view.
 * <p>
 * The <code>getOverrideStyle</code> method provides a mechanism through which a
 * DOM author could effect immediate change to the style of an element without
 * modifying the explicitly linked style sheets of a document or the inline
 * style of elements in the style sheets. This style sheet comes after the
 * author style sheet in the cascade algorithm and is called override style
 * sheet. The override style sheet takes precedence over author style sheets. An
 * "!important" declaration still takes precedence over a normal declaration.
 * Override, author, and user style sheets all may contain "!important"
 * declarations. User "!important" rules take precedence over both override and
 * author "!important" rules, and override "!important" rules take precedence
 * over author "!important" rules.
 * <p>
 * The expectation is that an instance of the <code>DocumentCSS</code> interface
 * can be obtained by using binding-specific casting methods on an instance of
 * the <code>Document</code> interface.
 * <p>
 * See also the <a
 * href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113'>Document
 * Object Model (DOM) Level 2 Style Specification</a>.
 * 
 * @since DOM Level 2
 */
public interface DocumentCSS extends DocumentStyle {

	/**
	 * This method is used to retrieve the override style declaration for a
	 * specified element and a specified pseudo-element.
	 * 
	 * @param elt
	 *            The element whose style is to be modified. This parameter
	 *            cannot be null.
	 * @param pseudoElt
	 *            The pseudo-element or <code>null</code> if none.
	 * @return The override style declaration.
	 */
	public CSSStyleDeclaration getOverrideStyle(Element elt, String pseudoElt);

}