d7efbbdcdf
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2236 fd906abe-77d9-0310-91a1-e0d9ade77398
98 lines
2.8 KiB
Python
98 lines
2.8 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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View extension for support of i18n content.
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$Id$
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"""
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from zope import interface, component
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from zope.app.pagetemplate import ViewPageTemplateFile
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from zope.cachedescriptors.property import Lazy
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from zope.i18n.interfaces import IUserPreferredLanguages
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from zope.i18n.negotiator import negotiator
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from loops.common import adapted
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class LanguageInfo(object):
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def __init__(self, context, request):
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self.context = context
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self.request = request
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@Lazy
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def loopsRoot(self):
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return self.context.getLoopsRoot()
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@Lazy
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def availableLanguages(self):
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for opt in self.loopsRoot.options:
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if opt.startswith('languages:'):
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return opt[len('languages:'):].split(',')
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return []
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@Lazy
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def defaultLanguage(self):
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langs = self.availableLanguages
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return langs and langs[0] or None
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@Lazy
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def language(self):
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lang = self.request.get('loops.language')
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if lang is not None and lang in self.availableLanguages:
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return lang
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return (negotiator.getLanguage(self.availableLanguages, self.request)
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or self.defaultLanguage)
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class I18NView(object):
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""" View mix-in class.
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"""
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@Lazy
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def languageInfo(self):
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return LanguageInfo(self.context, self.request)
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@Lazy
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def useI18N(self):
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return (self.languageInfo.availableLanguages
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and getattr(self.adapted, 'i18nAttributes', None))
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@Lazy
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def adapted(self):
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return adapted(self.context, self.languageInfo)
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def checkLanguage(self):
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# get language from session
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self.setPreferredLanguage()
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def setLanguage(self, lang=None):
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lang = lang or self.request.form.get('lang')
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if lang:
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upl = IUserPreferredLanguages(self.request)
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upl.setPreferredLanguages([lang])
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def switchLanguage(self, lang=None, keep=False):
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keep = self.request.form.get('keep')
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if keep:
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pass # set in session
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self.setPreferredLanguage(lang)
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return self()
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