f43676c843
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1601 fd906abe-77d9-0310-91a1-e0d9ade77398
134 lines
3.9 KiB
Python
134 lines
3.9 KiB
Python
#
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# Copyright (c) 2006 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Common stuff.
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$Id$
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"""
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from zope.app.container.contained import NameChooser as BaseNameChooser
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from zope.dublincore.interfaces import IZopeDublinCore
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from zope.dublincore.annotatableadapter import ZDCAnnotatableAdapter
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from zope.dublincore.zopedublincore import ScalarProperty
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from zope.component import adapts
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from zope.interface import implements
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from zope.cachedescriptors.property import Lazy
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from loops.interfaces import ILoopsObject, ILoopsContained, IConcept, IResource
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from loops.interfaces import IResourceAdapter
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# type interface adapters
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class AdapterBase(object):
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""" (Mix-in) Class for concept adapters that provide editing of fields
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defined by the type interface.
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"""
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adapts(IConcept)
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_attributes = ('context', '__parent__', )
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_schemas = list(IConcept)
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def __init__(self, context):
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self.context = context # to get the permission stuff right
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self.__parent__ = context
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def __getattr__(self, attr):
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self.checkAttr(attr)
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return getattr(self.context, '_' + attr, None)
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def __setattr__(self, attr, value):
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if attr in self._attributes:
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object.__setattr__(self, attr, value)
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else:
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self.checkAttr(attr)
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setattr(self.context, '_' + attr, value)
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def checkAttr(self, attr):
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if attr not in self._schemas:
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raise AttributeError(attr)
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def __eq__(self, other):
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return self.context == other.context
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class ResourceAdapterBase(AdapterBase):
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adapts(IResource)
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_schemas = list(IResourceAdapter)
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# other adapters
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class LoopsDCAdapter(ZDCAnnotatableAdapter):
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implements(IZopeDublinCore)
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adapts(ILoopsObject)
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def __init__(self, context):
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self.context = context
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super(LoopsDCAdapter, self).__init__(context)
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def Title(self):
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return super(LoopsDCAdapter, self).title or self.context.title
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def setTitle(self, value):
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ScalarProperty(u'Title').__set__(self, value)
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title = property(Title, setTitle)
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class NameChooser(BaseNameChooser):
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adapts(ILoopsContained)
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def chooseName(self, name, obj):
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if not name:
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name = self.generateName(obj)
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name = super(NameChooser, self).chooseName(name, obj)
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return name
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def generateName(self, obj):
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title = obj.title
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result = []
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if len(title) > 15:
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words = title.split()
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if len(words) > 1:
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title = '_'.join((words[0], words[-1]))
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for c in title:
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try:
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c = c.encode('ISO8859-15')
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except UnicodeEncodeError:
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continue
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if c in self.specialCharacters:
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result.append(self.specialCharacters[c].lower())
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continue
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if ord(c) > 127:
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c = chr(ord(c) & 127)
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if c in ('_., '):
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result.append('_')
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elif not c.isalpha() and not c.isdigit():
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continue
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else:
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result.append(c.lower())
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name = unicode(''.join(result))
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return name
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specialCharacters = {
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'\xc4': 'Ae', '\xe4': 'ae', '\xd6': 'Oe', '\xf6': 'oe',
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'\xdc': 'Ue', '\xfc': 'ue', '\xdf': 'ss'}
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