1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
##############################################################################
#
# TALESField - Field with TALES support for Archetypes
# Copyright (C) 2005 Sidnei da Silva, Daniel Nouri and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
##############################################################################
"""
$Id: __init__.py,v 1.2 2005/02/26 17:56:10 sidnei Exp $
"""
from Acquisition import aq_base, aq_inner, aq_parent
from Products.CMFCore.utils import getToolByName
import Products.CMFCore.Expression as Expression
try:
from Products.CMFCore.Expression import getExprContext
except ImportError:
def getExprContext(context, object=None):
request = getattr(context, 'REQUEST', None)
if request:
cache = request.get('_ec_cache', None)
if cache is None:
request['_ec_cache'] = cache = {}
ec = cache.get( id(object), None )
else:
ec = None
if ec is None:
utool = getToolByName(context, 'portal_url')
portal = utool.getPortalObject()
if object is None or not hasattr(object, 'aq_base'):
folder = portal
else:
folder = object
# Search up the containment hierarchy until we find an
# object that claims it's a folder.
while folder is not None:
if getattr(aq_base(folder), 'isPrincipiaFolderish', 0):
# found it.
break
else:
folder = aq_parent(aq_inner(folder))
ec = Expression.createExprContext(folder, portal, object)
if request:
cache[ id(object) ] = ec
return ec
|
