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############################################################################## # # Copyright (c) 2006 Zope Foundation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE. # ############################################################################## """Global components support """ from zope.interface import implementer from zope.interface.adapter import AdapterRegistry from zope.interface.registry import Components from zope.component.interfaces import IComponentLookup from zope.component._compat import _BLANK def GAR(components, registryName): return getattr(components, registryName) class GlobalAdapterRegistry(AdapterRegistry): """A global adapter registry This adapter registry's main purpose is to be picklable in combination with a site manager.""" def __init__(self, parent, name): self.__parent__ = parent self.__name__ = name super(GlobalAdapterRegistry, self).__init__() def __reduce__(self): return GAR, (self.__parent__, self.__name__) @implementer(IComponentLookup) class BaseGlobalComponents(Components): def _init_registries(self): self.adapters = GlobalAdapterRegistry(self, 'adapters') self.utilities = GlobalAdapterRegistry(self, 'utilities') def __reduce__(self): # Global site managers are pickled as global objects return self.__name__ base = BaseGlobalComponents('base') try: from zope.testing.cleanup import addCleanUp except ImportError: #pragma NO COVER pass else: addCleanUp(lambda: base.__init__('base')) del addCleanUp globalSiteManager = base def getGlobalSiteManager(): return globalSiteManager # The following APIs provide global registration support for Python code. # We eventually want to deprecate these in favor of using the global # component registry directly. def provideUtility(component, provides=None, name=_BLANK): base.registerUtility(component, provides, name, event=False) def provideAdapter(factory, adapts=None, provides=None, name=_BLANK): base.registerAdapter(factory, adapts, provides, name, event=False) def provideSubscriptionAdapter(factory, adapts=None, provides=None): base.registerSubscriptionAdapter(factory, adapts, provides, event=False) def provideHandler(factory, adapts=None): base.registerHandler(factory, adapts, event=False)Private