3ea664a763
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@646 fd906abe-77d9-0310-91a1-e0d9ade77398
62 lines
No EOL
1.7 KiB
Python
62 lines
No EOL
1.7 KiB
Python
#
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# Copyright (c) 2005 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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Implementation of classes providing lazy variables.
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$Id$
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"""
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from zope.interface import implements
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import interfaces
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class LazyNamespace(object):
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""" Basic adapter providing a lazy namespace.
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"""
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implements(interfaces.ILazyNamespace)
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variables = {}
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def __init__(self, context):
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self.context = context
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@classmethod
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def registerVariable(class_, name, method):
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class_.variables[name] = method
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def __getattr__(self, attr):
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value = self.variables[attr](self)
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setattr(self, attr, value)
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return value
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class LazyBrowserNamespace(LazyNamespace):
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""" A multi-adapter providing a lazy namespace for to be used for
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browser views.
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"""
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variables = {} # LazyBrowserNamespace class should get its own registry.
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def __init__(self, context, request, view):
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self.context = context
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self.request = request
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self.view = view
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