/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file and, per its terms, should not be removed:

 *

 * 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;

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 1.4, 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);

}