242c4a4921
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1845 fd906abe-77d9-0310-91a1-e0d9ade77398
74 lines
2.2 KiB
Python
74 lines
2.2 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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Complex structures with templates/schemas.
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$Id$
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"""
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from zope.interface import Interface, Attribute
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# template side interfaces
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class IComponent(Interface):
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""" Basic building block. A component may be part of other components.
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"""
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class IElement(IComponent):
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""" A final or elementary component, i.e. one that does not consist
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of other components.
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"""
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class ICompound(IComponent):
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""" A component that consists of other components.
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"""
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parts = Attribute('An ordered sequence of the components this '
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'object consists of')
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class ITemplate(Interface):
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""" A structure, consisting of components, that may be used as a
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template/schema/blueprint for client objects.
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"""
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components = Attribute('An ordered sequence of the components this '
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'object is built upon')
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# instances
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class IInstance(Interface):
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""" Represents (adapts) an object that uses a template.
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"""
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context = Attribute('Object this instance adapter has been created for')
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template = Attribute('A template to be used for this instance')
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aspect = Attribute('A dotted name that helps to store and retrieve the '
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'template.')
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def applyTemplate(*args, **kw):
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""" Apply the template using the instance's context. Note that this
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method is just an example - instance classes may define
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other methods that provide more specific actions.
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"""
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