a59f6a0e32
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3958 fd906abe-77d9-0310-91a1-e0d9ade77398
55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
#
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# Copyright (c) 2010 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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Wrapping ZPT macro templates for dynamic macro lookup.
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$Id$
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"""
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from zope.app.pagetemplate import ViewPageTemplateFile
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from zope.cachedescriptors.property import Lazy
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_not_found = object()
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class MacroTemplate(object):
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def __init__(self, template, parent=None):
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self.baseTemplate = template
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self.parent = parent
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@Lazy
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def macros(self):
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return Macros(self)
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class Macros(dict):
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def __init__(self, template):
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self.template = template
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def __getitem__(self, key):
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macro = self.template.baseTemplate.macros.get(key, _not_found)
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if macro is _not_found:
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parent = self.template.parent
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if parent is None:
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raise KeyError(key)
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return parent.macros[key]
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return macro
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