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

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 * published by the Free Software Foundation.  Oracle designates this

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

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/*

 * 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;

/**

 * The <code>CSSValueList</code> interface provides the abstraction of an

 * ordered collection of CSS values.

 * <p> Some properties allow an empty list into their syntax. In that case,

 * these properties take the <code>none</code> identifier. So, an empty list

 * means that the property has the value <code>none</code>.

 * <p> The items in the <code>CSSValueList</code> are accessible via an

 * integral index, starting from 0.

 * <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 CSSValueList extends CSSValue {

    /**

     * The number of <code>CSSValues</code> in the list. The range of valid

     * values of the indices is <code>0</code> to <code>length-1</code>

     * inclusive.

     */

    public int getLength();

    /**

     * Used to retrieve a <code>CSSValue</code> by ordinal index. The order in

     * this collection represents the order of the values in the CSS style

     * property. If index is greater than or equal to the number of values

     * in the list, this returns <code>null</code>.

     * @param index Index into the collection.

     * @return The <code>CSSValue</code> at the <code>index</code> position

     *   in the <code>CSSValueList</code>, or <code>null</code> if that is

     *   not a valid index.

     */

    public CSSValue item(int index);

}