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Java > Open Source Codes > org > w3c > dom > css > CSSRuleList


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  */
12
13 package org.w3c.dom.css;
14
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();
30
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);
42
43 }
44
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