Source for org.w3c.dom.css.CSSValueList

   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>CSSValueList</code> interface provides the abstraction of an 
  17:  * ordered collection of CSS values.
  18:  * <p> Some properties allow an empty list into their syntax. In that case, 
  19:  * these properties take the <code>none</code> identifier. So, an empty list 
  20:  * means that the property has the value <code>none</code>. 
  21:  * <p> The items in the <code>CSSValueList</code> are accessible via an 
  22:  * integral index, starting from 0. 
  23:  * <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>.
  24:  * @since DOM Level 2
  25:  */
  26: public interface CSSValueList extends CSSValue {
  27:     /**
  28:      * The number of <code>CSSValues</code> in the list. The range of valid 
  29:      * values of the indices is <code>0</code> to <code>length-1</code> 
  30:      * inclusive.
  31:      */
  32:     public int getLength();
  33: 
  34:     /**
  35:      * Used to retrieve a <code>CSSValue</code> by ordinal index. The order in 
  36:      * this collection represents the order of the values in the CSS style 
  37:      * property. If index is greater than or equal to the number of values 
  38:      * in the list, this returns <code>null</code>.
  39:      * @param index Index into the collection.
  40:      * @return The <code>CSSValue</code> at the <code>index</code> position 
  41:      *   in the <code>CSSValueList</code>, or <code>null</code> if that is 
  42:      *   not a valid index.
  43:      */
  44:     public CSSValue item(int index);
  45: 
  46: }