TypedNotificationCenter

public protocol TypedNotificationCenter

A type that can post TypedNotifications and add notification observers.

  • Posts a TypedNotification

    Declaration

    Swift

    func post<T>(_ notification: T) where T : TypedNotification

    Parameters

    notification

    The notification to post.

  • Registers a block to be executed when a matching notification is posted.

    Declaration

    Swift

    func addObserver<T>(forType type: T.Type, object obj: T.Object?, queue: OperationQueue?, using block: @escaping (T) -> Void) -> NotificationObservation where T : TypedNotification

    Parameters

    type

    The type of notification to observe.
    object

    An object to filter notifications by. Only notifications whose object is object will be delivered to the observer. Pass nil to receive notifications from all objects.
    queue

    An OperationQueue to run block on. Pass nil to have block evaluated synchronously on the posting thread.
    block

    A block to execute when a matching notification is posted. The block takes the matching notification as an argument.

    Return Value

    A notification observation that manages the lifetime of the observer. When the observation is deallocated, the notification observer is removed.