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########################################################################
#
# File Name: HTMLCollection.py
#
#
"""
WWW: http://4suite.com/4DOM e-mail: support@4suite.com
Copyright (c) 2000 Fourthought Inc, USA. All Rights Reserved.
See http://4suite.com/COPYRIGHT for license and copyright information
"""
from xml.dom import Node
from xml.dom import NoModificationAllowedErr
from xml.dom.html import HTML_NAME_ALLOWED
import UserList
class HTMLCollection(UserList.UserList):
def __init__(self, list=None):
UserList.UserList.__init__(self, list or [])
### Attribute Access Methods ###
def __getattr__(self, name):
if name == 'length':
return self._get_length()
# Pass-through
return getattr(HTMLCollection, name)
def __setattr__(self, name, value):
if name == 'length':
self._set_length(value)
# Pass-through
self.__dict__[name] = value
### Attribute Methods ###
def _get_length(self):
return self.__len__()
def _set_length(self, value):
raise NoModificationAllowedErr()
### Methods ###
def item(self, index):
if index >= self.__len__():
return None
else:
return self[int(index)]
def namedItem(self, name):
found_node = None
for node in self:
# IDs take presedence over NAMEs
if node.getAttribute('ID') == name:
found_node = node
break
if not found_node and node.getAttribute('NAME') == name \
and node.tagName in HTML_NAME_ALLOWED:
# We found a node with NAME attribute, but we have to wait
# until all nodes are done (one might have an ID that matches)
found_node = node
print 'found:', found_node
return found_node
### Overridden Methods ###
def __repr__(self):
st = "<HTMLCollection at %x: [" % (id(self))
if len(self):
for i in self[:-1]:
st = st + repr(i) + ', '
st = st + repr(self[-1])
st = st + ']>'
return st