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26 lines
1.1 KiB
Python
26 lines
1.1 KiB
Python
from typing import Any, Optional
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from .. import Singleton, UUID
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from . import Notification, NotificationName, NotificationObserver, NotificationCallback
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class NotificationCenter(Singleton):
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_observers: dict[NotificationName, list[NotificationObserver]] = {}
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def post(self, name: NotificationName, object: Optional[Any] = None, data: dict = []):
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notify = Notification(name = name, object = object, data = data)
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for obser in self._observers.get(name) or []:
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obser.callback(notify)
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def addObserver(self, notificationName: NotificationName, callback: NotificationCallback) -> NotificationObserver:
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if not notificationName in self._observers.keys() :
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self._observers[notificationName] = []
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observer = NotificationObserver(notificationName, callback)
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self._observers[notificationName].append(observer)
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return observer
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def removeObserver(self, observer: NotificationObserver):
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if observer in self._observers.get(observer.notificationName) or []:
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self._observers.get(observer.notificationName).remove(observer)
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