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====================== Component Registries ====================== The component registry's API is defined by ``zope.interface.interfaces.IComponents``: .. autointerface:: zope.interface.interfaces.IComponentLookup :members: :member-order: bysource .. autointerface:: zope.interface.interfaces.IComponentRegistry :members: :member-order: bysource .. autointerface:: zope.interface.interfaces.IComponents :members: :member-order: bysource One default implementation of `~zope.interface.interfaces.IComponents` is provided. .. autoclass:: zope.interface.registry.Components Events ====== Adding and removing components from the component registry create registration and unregistration events. Like most things, they are defined by an interface and a default implementation is provided. Registration ------------ .. autointerface:: zope.interface.interfaces.IObjectEvent .. autointerface:: zope.interface.interfaces.IRegistrationEvent .. autointerface:: zope.interface.interfaces.IRegistered .. autoclass:: zope.interface.interfaces.Registered .. autointerface:: zope.interface.interfaces.IUnregistered .. autoclass:: zope.interface.interfaces.Unregistered Details ------- These are all types of ``IObjectEvent``, meaning they have an object that provides specific details about the event. Component registries create detail objects for four types of components they manage. All four share a common base interface. .. autointerface:: zope.interface.interfaces.IRegistration * Utilties .. autointerface:: zope.interface.interfaces.IUtilityRegistration .. autoclass:: zope.interface.registry.UtilityRegistration * Handlers .. autointerface:: zope.interface.interfaces.IHandlerRegistration .. autoclass:: zope.interface.registry.HandlerRegistration * Adapters For ease of implementation, a shared base class is used for these events. It should not be referenced by clients, but it is documented to show the common attributes. .. autointerface:: zope.interface.interfaces._IBaseAdapterRegistration .. autointerface:: zope.interface.interfaces.IAdapterRegistration .. autoclass:: zope.interface.registry.AdapterRegistration .. autointerface:: zope.interface.interfaces.ISubscriptionAdapterRegistration .. autoclass:: zope.interface.registry.SubscriptionRegistration Exceptions ========== .. autoclass:: zope.interface.interfaces.ComponentLookupError .. autoclass:: zope.interface.interfaces.Invalid