Swift NotificationCenter (multicast global event management) Broadcaster/Listener example

EventBroadcaster.swift

// This example class registers to receive specific NotificationCenter events and responds to them
class ListeningExampleClass {
	private var aNotificationCenterObservation: NSObjectProtocol?
	
	// Called for example in .viewDidLoad() or initializer to register for notifications
	func subscribeNotifications() {
        let center = NotificationCenter.default
        self.aNotificationCenterObservation = center.addObserver(forName: .eventActiveWorkspaceChanged, object: nil, queue: nil) { _ in
            // Handle event broadcast stuff here...
        }
    }
	
	
}

EventListener.swift

// This is where the notifications are defined.
extension Notification.Name {
	static var eventActiveWorkspaceChanged = NSNotification.Name("eventActiveWorkspaceChangedNotification")
}

// This example class broadcasts events via the NotificationCenter
class BroadcastingExampleClass {
	
	// Posts a notification when the event happens.
	func notifyActiveWorkspaceChanged() {
		NotificationCenter.default.post(name: .eventActiveWorkspaceChanged, object: self)
    }
	
}