[py3] Avoid setting attribute on Element instance in wdoc view
This change is needed to make "wdoc" view work on Python 3. Indeed,
before this patch, we used to set a "parent" attribute on Element
instances, which is not permitted since Python 3.3 as
xml.etree.ElementTree uses the C implementation by default.
To get rid of this "parent" attribute, we rework the XML nodes
processing logic to return and retrieve a node along with its parent in
several place of the code. Namely, build_toc_index() now accepts the
"parent" value for "node" and inserts it in the "index" dict (thus avoid
`node.parent = <value>`). Respectively, every query to the "index" dict
is updated to also retrieve the "parent" (thus avoiding `<value> =
node.parent`). Later in InlineHelpView class, the "index" dict is bound
to "tocindex" attribute so we adjust how it is queried in respective
methods.
Tests cubicweb/web/test/unittest_views_wdoc.py now pass on Python 3.
# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""xbel views"""
from cubicweb import _
from six.moves import range
from logilab.mtconverter import xml_escape
from cubicweb.predicates import is_instance
from cubicweb.view import EntityView
from cubicweb.web.views.xmlrss import XMLView
class XbelView(XMLView):
__regid__ = 'xbel'
title = _('xbel export')
templatable = False
content_type = 'text/xml' #application/xbel+xml
def cell_call(self, row, col):
self.wview('xbelitem', self.cw_rset, row=row, col=col)
def call(self):
"""display a list of entities by calling their <item_vid> view"""
self.w(u'<?xml version="1.0" encoding="%s"?>\n' % self._cw.encoding)
self.w(u'<!DOCTYPE xbel PUBLIC "+//IDN python.org//DTD XML Bookmark Exchange Language 1.0//EN//XML" "http://www.python.org/topics/xml/dtds/xbel-1.0.dtd">')
self.w(u'<xbel version="1.0">')
self.w(u'<title>%s</title>' % self._cw._('bookmarks'))
for i in range(self.cw_rset.rowcount):
self.cell_call(i, 0)
self.w(u"</xbel>")
class XbelItemView(EntityView):
__regid__ = 'xbelitem'
def cell_call(self, row, col):
entity = self.cw_rset.complete_entity(row, col)
self.w(u'<bookmark href="%s">' % xml_escape(self.url(entity)))
self.w(u' <title>%s</title>' % xml_escape(entity.dc_title()))
self.w(u'</bookmark>')
def url(self, entity):
return entity.absolute_url()
class XbelItemBookmarkView(XbelItemView):
__select__ = is_instance('Bookmark')
def url(self, entity):
return entity.actual_url()