01: /*
02: * Copyright (c) 2000 World Wide Web Consortium,
03: * (Massachusetts Institute of Technology, Institut National de
04: * Recherche en Informatique et en Automatique, Keio University). All
05: * Rights Reserved. This program is distributed under the W3C's Software
06: * Intellectual Property License. This program is distributed in the
07: * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
08: * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
09: * 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 index Index 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: }
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