1 /*
2 * Copyright (c) 2000 World Wide Web Consortium,
3 * (Massachusetts Institute of Technology, Institut National de
4 * Recherche en Informatique et en Automatique, Keio University). All
5 * Rights Reserved. This program is distributed under the W3C's Software
6 * Intellectual Property License. This program is distributed in the
7 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
8 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
9 * PURPOSE.
10 * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
11 */
13 package org.w3c.dom.css;
15 /**
16 * The <code>CSSRuleList</code> interface provides the abstraction of an
17 * ordered collection of CSS rules.
18 * <p> The items in the <code>CSSRuleList</code> are accessible via an
19 * integral index, starting from 0.
20 * <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>.
21 * @since DOM Level 2
22 */
23 public interface CSSRuleList {
24 /**
25 * The number of <code>CSSRules</code> in the list. The range of valid
26 * child rule indices is <code>0</code> to <code>length-1</code>
27 * inclusive.
28 */
29 public int getLength();
31 /**
32 * Used to retrieve a CSS rule by ordinal index. The order in this
33 * collection represents the order of the rules in the CSS style sheet.
34 * If index is greater than or equal to the number of rules in the list,
35 * this returns <code>null</code>.
36 * @param indexIndex into the collection
37 * @return The style rule at the <code>index</code> position in the
38 * <code>CSSRuleList</code>, or <code>null</code> if that is not a
39 * valid index.
40 */
41 public CSSRule item(int index);
43 }