def remove_subscriber(self, subscriber: AbstractEventSubscriber):
"""
Removes an event subscriber.
:param subscriber: The subscriber
:return:
"""
for event_name, params in subscriber.get_subscribed_events().items():
if isinstance(params, list) and isinstance(params[0], list):
for listener in params:
self.remove_listener(event_name, getattr(subscriber, listener[0]))
else:
parameters = params if isinstance(params, str) else params[0]
self.remove_listener(event_name, getattr(subscriber, parameters))
def add_subscriber(self, subscriber: AbstractEventSubscriber):
"""
Adds an event subscriber. The subscriber is asked for all the events he is
interested in and added as a listener for these events.
:param subscriber: The subscriber
"""
for event_name, params in subscriber.get_subscribed_events().items():
if isinstance(params, str):
self.add_listener(event_name, getattr(subscriber, params))
elif isinstance(params, list) and len(params) <= 2 and isinstance(params[0], str):
priority = params[1] if len(params) > 1 else 0
self.add_listener(event_name, getattr(subscriber, params[0]), priority)
else:
for listener in params:
priority = listener[1] if len(listener) > 1 else 0
self.add_listener(event_name, getattr(subscriber, listener[0]), priority)
