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#!/usr/bin/env python
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# encoding: utf-8
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"""
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A class for creating a Twisted service that is configured using IPython's
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configuration system.
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2009 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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import zope.interface as zi
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from IPython.core.component import Component
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#-----------------------------------------------------------------------------
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# Code
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#-----------------------------------------------------------------------------
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class IConfiguredObjectFactory(zi.Interface):
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"""I am a component that creates a configured object.
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This class is useful if you want to configure a class that is not a
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subclass of :class:`IPython.core.component.Component`.
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"""
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def __init__(config):
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"""Get ready to configure the object using config."""
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def create():
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"""Return an instance of the configured object."""
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class ConfiguredObjectFactory(Component):
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zi.implements(IConfiguredObjectFactory)
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def __init__(self, config):
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super(ConfiguredObjectFactory, self).__init__(None, config=config)
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def create(self):
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raise NotImplementedError('create must be implemented in a subclass')
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class IAdaptedConfiguredObjectFactory(zi.Interface):
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"""I am a component that adapts and configures an object.
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This class is useful if you have the adapt an instance and configure it.
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"""
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def __init__(config, adaptee=None):
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"""Get ready to adapt adaptee and then configure it using config."""
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def create():
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"""Return an instance of the adapted and configured object."""
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class AdaptedConfiguredObjectFactory(Component):
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# zi.implements(IAdaptedConfiguredObjectFactory)
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def __init__(self, config, adaptee):
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# print
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# print "config pre:", config
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super(AdaptedConfiguredObjectFactory, self).__init__(None, config=config)
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# print
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# print "config post:", config
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self.adaptee = adaptee
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def create(self):
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raise NotImplementedError('create must be implemented in a subclass')
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