def unregisterHandler(self, factory=None, required=None, name=_u('')):
if name:
raise TypeError("Named subscribers are not yet supported")
if (required is None) and (factory is None):
raise TypeError("Must specify one of factory and required")
required = _getAdapterRequired(factory, required)
if factory is None:
new = [(r, n, f, i) for (r, n, f, i) in self._handler_registrations
if r != required]
else:
new = [(r, n, f, i) for (r, n, f, i) in self._handler_registrations
if not (r == required and f == factory)]
if len(new) == len(self._handler_registrations):
return False
self._handler_registrations[:] = new
self.adapters.unsubscribe(required, None, factory)
notify(
Unregistered(HandlerRegistration(self, required, name, factory,
'')))
return True
def unregisterAdapter(
self,
factory=None,
required=None,
provided=None,
name=_u(''),
):
if provided is None:
if factory is None:
raise TypeError("Must specify one of factory and provided")
provided = _getAdapterProvided(factory)
if (required is None) and (factory is None):
raise TypeError("Must specify one of factory and required")
required = _getAdapterRequired(factory, required)
old = self._adapter_registrations.get((required, provided, name))
if (old is None) or ((factory is not None) and (factory != old[0])):
return False
del self._adapter_registrations[(required, provided, name)]
self.adapters.unregister(required, provided, name)
notify(
Unregistered(
AdapterRegistration(self, required, provided, name, *old)))
return True
def unregisterUtility(self,
component=None,
provided=None,
name=u'',
factory=None):
if factory:
if component:
raise TypeError("Can't specify factory and component.")
component = factory()
if provided is None:
if component is None:
raise TypeError("Must specify one of component, factory and "
"provided")
provided = _getUtilityProvided(component)
old = self._utility_registrations.get((provided, name))
if (old is None) or ((component is not None) and
(component != old[0])):
return False
if component is None:
component = old[0]
# Note that component is now the old thing registered
self._utility_registrations_cache.unregisterUtility(
provided, name, component)
notify(
Unregistered(
UtilityRegistration(self, provided, name, component,
*old[1:])))
return True
def unregisterUtility(self,
component=None,
provided=None,
name=_u(''),
factory=None):
if factory:
if component:
raise TypeError("Can't specify factory and component.")
component = factory()
if provided is None:
if component is None:
raise TypeError("Must specify one of component, factory and "
"provided")
provided = _getUtilityProvided(component)
old = self._utility_registrations.get((provided, name))
if (old is None) or ((component is not None) and
(component != old[0])):
return False
if component is None:
component = old[0]
# Note that component is now the old thing registered
del self._utility_registrations[(provided, name)]
self.utilities.unregister((), provided, name)
subscribed = False
for ((p, _), data) in iter(self._utility_registrations.items()):
if p == provided and data[0] == component:
subscribed = True
break
if not subscribed:
self.utilities.unsubscribe((), provided, component)
notify(
Unregistered(
UtilityRegistration(self, provided, name, component,
*old[1:])))
return True
def unregisterSubscriptionAdapter(
self,
factory=None,
required=None,
provided=None,
name=u'',
):
if name:
raise TypeError("Named subscribers are not yet supported")
if provided is None:
if factory is None:
raise TypeError("Must specify one of factory and provided")
provided = _getAdapterProvided(factory)
if (required is None) and (factory is None):
raise TypeError("Must specify one of factory and required")
required = _getAdapterRequired(factory, required)
if factory is None:
new = [(r, p, n, f, i)
for (r, p, n, f, i) in self._subscription_registrations
if not (r == required and p == provided)]
else:
new = [(r, p, n, f, i)
for (r, p, n, f, i) in self._subscription_registrations
if not (r == required and p == provided and f == factory)]
if len(new) == len(self._subscription_registrations):
return False
self._subscription_registrations[:] = new
self.adapters.unsubscribe(required, provided, factory)
notify(
Unregistered(
SubscriptionRegistration(self, required, provided, name,
factory, '')))
return True
