96c68f3cd5
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@4066 fd906abe-77d9-0310-91a1-e0d9ade77398
94 lines
2.6 KiB
Python
94 lines
2.6 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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Base classes.
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$Id$
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"""
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from Acquisition import aq_inner, aq_parent
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from persistent.mapping import PersistentMapping
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from zope.app.container.interfaces import IObjectAddedEvent
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from zope import component
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from zope.interface import implements
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from cybertools.util.generic.interfaces import IGeneric
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from cybertools.util.generic.interfaces import IGenericObject, IGenericFolder
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_not_found = object()
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class GenericObject(object):
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""" A mixin class supporting generic attribute access and other
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basic or common functionality when combined with Zope2's
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SimpleItem.
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"""
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implements(IGenericObject)
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typeInterface = None
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def setup(self):
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self.__generic_attributes__ = PersistentMapping()
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if self.typeInterface:
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obj = self.typeInterface(self)
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obj.setup()
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def getGenericAttribute(self, attr, default=_not_found):
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value = self.__generic_attributes__.get(attr, default)
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if value is _not_found:
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raise AttributeError(attr)
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return value
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def setGenericAttribute(self, attr, value):
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self.__generic_attributes__[attr] = value
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return value
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def getParent(self):
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return aq_parent(aq_inner(self))
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def rename(self, newName):
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self.getParent().manage_renameObject(self.name, newName)
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class GenericFolder(GenericObject):
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""" Provide generic (i.e. dictionary-like) folder access to Zope2's
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Folder or BTreeFolder.
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"""
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implements(IGenericFolder)
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def __getitem__(self, name):
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return getattr(self, name)
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def __setitem__(self, name, value):
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self._setObject(name, value)
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def getItems(self, types=None):
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return self.objectItems(types)
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def values(self, types=None):
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return self.objectValues(types)
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@component.adapter(IGeneric, IObjectAddedEvent)
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def setup(obj, event):
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obj.setup()
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component.provideHandler(setup)
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