33 lines
1.1 KiB
Python
Executable File
33 lines
1.1 KiB
Python
Executable File
"""StyleSheetList implements DOM Level 2 Style Sheets StyleSheetList."""
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__all__ = ['StyleSheetList']
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__docformat__ = 'restructuredtext'
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__version__ = '$Id$'
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class StyleSheetList(list):
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"""Interface `StyleSheetList` (introduced in DOM Level 2)
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The `StyleSheetList` interface provides the abstraction of an ordered
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collection of :class:`~cssutils.stylesheets.StyleSheet` objects.
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The items in the `StyleSheetList` are accessible via an integral index,
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starting from 0.
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This Python implementation is based on a standard Python list so e.g.
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allows ``examplelist[index]`` usage.
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"""
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def item(self, index):
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"""
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Used to retrieve a style sheet by ordinal `index`. If `index` is
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greater than or equal to the number of style sheets in the list,
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this returns ``None``.
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"""
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try:
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return self[index]
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except IndexError:
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return None
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length = property(lambda self: len(self),
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doc="The number of :class:`StyleSheet` objects in the list. The range"
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" of valid child stylesheet indices is 0 to length-1 inclusive.")
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