001 /*
002 * Copyright (c) 2000 World Wide Web Consortium,
003 * (Massachusetts Institute of Technology, Institut National de
004 * Recherche en Informatique et en Automatique, Keio University). All
005 * Rights Reserved. This program is distributed under the W3C's Software
006 * Intellectual Property License. This program is distributed in the
007 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
008 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
009 * PURPOSE.
010 * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
011 */
012
013 package org.w3c.dom.stylesheets;
014
015 /**
016 * The <code>StyleSheetList</code> interface provides the abstraction of an
017 * ordered collection of style sheets.
018 * <p> The items in the <code>StyleSheetList</code> are accessible via an
019 * integral index, starting from 0.
020 * <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>.
021 * @since DOM Level 2
022 */
023 public interface StyleSheetList {
024 /**
025 * The number of <code>StyleSheets</code> in the list. The range of valid
026 * child stylesheet indices is <code>0</code> to <code>length-1</code>
027 * inclusive.
028 */
029 public int getLength();
030
031 /**
032 * Used to retrieve a style sheet by ordinal index. If index is greater
033 * than or equal to the number of style sheets in the list, this returns
034 * <code>null</code>.
035 * @param index Index into the collection
036 * @return The style sheet at the <code>index</code> position in the
037 * <code>StyleSheetList</code>, or <code>null</code> if that is not a
038 * valid index.
039 */
040 public StyleSheet item(int index);
041
042 }