d7efbbdcdf
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2236 fd906abe-77d9-0310-91a1-e0d9ade77398
99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
#
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# Copyright (c) 2007 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 import component
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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 zope.security.proxy import removeSecurityProxy
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from persistent.mapping import PersistentMapping
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from cybertools.typology.interfaces import IType
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from loops.common import adapted, AdapterBase
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# support for i18n content
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class I18NValue(PersistentMapping):
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""" A dictionary to be used for storing values for different languages.
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"""
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def lower(self):
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return str(self).lower()
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def __str__(self):
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return self.values()[0]
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def getI18nValue(obj, attr, langInfo=None):
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obj = removeSecurityProxy(obj)
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value = getattr(obj, attr, None)
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lang = None
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if isinstance(value, I18NValue):
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lang = langInfo and langInfo.language or value.keys()[0]
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value = value.get(lang)
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#print '*** getI18nValue', attr, langInfo, lang, getattr(obj, attr, None), value
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return value
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def setI18nValue(obj, attr, value, langInfo=None):
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obj = removeSecurityProxy(obj)
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old = getattr(obj, attr, None)
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if langInfo is None:
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setattr(obj, attr, value)
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return
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lang = langInfo.language
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if isinstance(old, I18NValue):
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old[lang] = value
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else:
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setattr(obj, attr, I18NValue(((lang, value),)))
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#print '*** setI18nValue', attr, langInfo, lang, value, getattr(obj, attr, None)
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class I18NAdapterBase(AdapterBase):
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""" Base (or mix-in) class for concept adapters for internationalization of
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context attributes.
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"""
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_adapterAttributes = AdapterBase._adapterAttributes + ('languageInfo',)
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languageInfo = None
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@Lazy
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def i18nAttributes(self):
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tp = IType(self.context)
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attrs = tp.optionsDict.get('i18nattributes', '')
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return [attr.strip() for attr in attrs.split(',')]
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def __getattr__(self, attr):
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self.checkAttr(attr)
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langInfo = attr in self.i18nAttributes and self.languageInfo or None
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return getI18nValue(self.context, '_' + attr, langInfo)
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def __setattr__(self, attr, value):
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if attr in self._adapterAttributes:
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object.__setattr__(self, attr, value)
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else:
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langInfo = attr in self.i18nAttributes and self.languageInfo or None
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self.checkAttr(attr)
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setI18nValue(self.context, '_' + attr, value, langInfo)
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