loops/schema.py
helmutm b28c81d9b4 add definitions for relation and relation set schema fields
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@3162 fd906abe-77d9-0310-91a1-e0d9ade77398
2009-01-19 16:11:12 +00:00

114 lines
3.3 KiB
Python

#
# Copyright (c) 2009 Helmut Merz helmutm@cy55.de
#
# 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
#
"""
Specialized fields and schema factories
$Id$
"""
from zope.component import adapts
from zope.interface import Attribute, implements
from zope.schema import Choice, List
from zope.schema.interfaces import IChoice, IList
from cybertools.composer.schema.factory import SchemaFactory
from loops.interfaces import IResourceAdapter, IFile, INote
# fields
class IRelation(IChoice):
""" An object addressed via a single relation.
"""
target_types = Attribute('A list of names that denote types of '
'loops objects (typically concept types) that may be used as '
'targets for the relation.')
class IRelationSet(IList):
""" A collection of objects addressed via a set of relations.
Despite its name, the collection may have a predefined order.
"""
target_types = Attribute('A list of names that denote types of '
'loops objects (typically concept types) that may be used as '
'targets for the relations.')
class Relation(Choice):
implements(IRelation)
__typeInfo = ('relation',)
def __init__(self, *args, **kw):
self.target_types = kw.pop('target_types')
super(Relation, self).__init__(*args, **kw)
class RelationSet(List):
implements(IRelationSet)
__typeInfo = ('relationset',)
def __init__(self, *args, **kw):
self.target_types = kw.pop('target_types')
super(RelationSet, self).__init__(*args, **kw)
# schema factories
class ResourceSchemaFactory(SchemaFactory):
adapts(IResourceAdapter)
def __call__(self, interface, **kw):
schema = super(ResourceSchemaFactory, self).__call__(interface, **kw)
#if 'data' in schema.fields.keys():
schema.fields.data.height = 10
if self.context.contentType == 'text/html':
schema.fields.data.fieldType = 'html'
return schema
class FileSchemaFactory(SchemaFactory):
adapts(IFile)
def __call__(self, interface, **kw):
schema = super(FileSchemaFactory, self).__call__(interface, **kw)
if 'request' in kw:
principal = kw['request'].principal
if not principal or principal.id != 'rootadmin':
schema.fields.remove('contentType')
return schema
class NoteSchemaFactory(SchemaFactory):
adapts(INote)
def __call__(self, interface, **kw):
schema = super(NoteSchemaFactory, self).__call__(interface, **kw)
schema.fields.remove('description')
schema.fields.data.height = 5
return schema