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########################################################################
#
# File Name: AttributeSetElement.py
#
#
"""
Implementation of the XSLT Spec attribute-set stylesheet element.
WWW: http://4suite.com/4XSLT e-mail: support@4suite.com
Copyright (c) 1999-2000 FourThought Inc, USA. All Rights Reserved.
See http://4suite.com/COPYRIGHT for license and copyright information
"""
import string
from xml.dom import EMPTY_NAMESPACE
import xml.dom.Element
import xml.dom.ext
import xml.xslt
from xml.xslt import XsltElement, XsltException, Error
from xml.xpath import Util
class AttributeSetElement(XsltElement):
legalAttrs = ['name', 'use-attribute-sets']
def __init__(self, doc, uri=xml.xslt.XSL_NAMESPACE,
localName='attribute-set', prefix='xsl', baseUri=''):
XsltElement.__init__(self, doc, uri, localName, prefix, baseUri)
def setup(self):
self.__dict__['_name'] = self.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not self._name:
raise XsltException(Error.ATTRIBUTESET_REQUIRES_NAME)
self.__dict__['_useAttributeSets'] = string.splitfields(self.getAttributeNS(EMPTY_NAMESPACE, 'use-attribute-sets'))
self.__dict__['_varBindings'] = {}
self.__dict__['_nss'] = xml.dom.ext.GetAllNs(self)
#Check that all children are attribute instructions
for child in self.childNodes:
if (child.namespaceURI, child.localName) != (xml.xslt.XSL_NAMESPACE, 'attribute'):
raise XsltException(Error.ILLEGAL_ATTRIBUTESET_CHILD)
return
def instantiate(self, context, processor):
origState = context.copy()
context.setNamespaces(self._nss)
split_name = Util.ExpandQName(self._name, namespaces=self._nss)
processor.attributeSets[split_name] = self
self._varBindings = context.varBindings
context.set(origState)
return (context,)
def use(self, context, processor, used=None):
if used is None:
used = []
origState = context.copy()
context.varBindings = self._varBindings
for attr_set_name in self._useAttributeSets:
split_name = Util.ExpandQName(attr_set_name, namespaces=context.processorNss)
try:
attr_set = processor.attributeSets[split_name]
except KeyError:
raise XsltException(Error.UNDEFINED_ATTRIBUTE_SET, attr_set_name)
attr_set.use(context, processor)
for child in self.childNodes:
context = child.instantiate(context, processor)[0]
context.set(origState)
return context
def __getinitargs__(self):
return (None, self.namespaceURI, self.localName, self.prefix,
self.baseUri)
def __getstate__(self):
base_state = XsltElement.__getstate__(self)
new_state = (base_state, self._nss, self._name,
self._useAttributeSets, self._varBindings)
return new_state
def __setstate__(self, state):
XsltElement.__setstate__(self, state[0])
self._nss = state[1]
self._name = state[2]
self._useAttributeSets = state[3]
self._varBindings = state[4]
return
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