Package cssutils :: Package css :: Module cssrulelist |
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# Source Code for Module cssutils.css.cssrulelist

     1  """
     2  CSSRuleList implements DOM Level 2 CSS CSSRuleList.
     3
     4  Partly also
     5      * http://dev.w3.org/csswg/cssom/#the-cssrulelist
     6  """
     7  __all__ = ['CSSRuleList']
     8  __docformat__ = 'restructuredtext'
     9  __author__ = '$LastChangedBy: cthedot $'
    10  __date__ = '$LastChangedDate: 2007-10-19 00:31:34 +0200 (Fr, 19 Okt 2007) $'
    11  __version__ = '$LastChangedRevision: 518 $'
    12
    13 -class CSSRuleList(list):
    14      """
    15      The CSSRuleList object represents an (ordered) list of statements.
    16
    17      The items in the CSSRuleList are accessible via an integral index,
    18      starting from 0.
    19
    20      Subclasses a standard Python list so all standard list methods are
    21      available.
    22
    23      Properties
    24      ==========
    25      length: of type unsigned long, readonly
    26          The number of CSSRules in the list. The range of valid child rule
    27          indices is 0 to length-1 inclusive.
    28      """
    29 -    def _getLength(self):
    30          return len(self)
    31
    32      length = property(_getLength,
    33          doc="(DOM) The number of CSSRules in the list.")
    34
    35 -    def item(self, index):
    36          """
    37          (DOM)
    38          Used to retrieve a CSS rule by ordinal index. The order in this
    39          collection represents the order of the rules in the CSS style
    40          sheet. If index is greater than or equal to the number of rules in
    41          the list, this returns None.
    42
    43          Returns CSSRule, the style rule at the index position in the
    44          CSSRuleList, or None if that is not a valid index.
    45          """
    46          try:
    47              return self[index]
    48          except IndexError:
    49              return None
    50