EventCenter

EventCenter is a swift library like Android's EventBus. Observers can register type safe handlers(no need to type casting!), and unregister. The handler's running thread can be specified when registering the hander.

Usage

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

developed on swift 1.2

Installation

EventCenter is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "EventCenter"

Example

class ViewController: UIViewController {

    override func viewWillAppear(animated: Bool) {
        let ec = EventCenter.defaultCenter

        // Handlers called only when the posted object-type is equal to the hander's arg-type.
        ec.register(self) { (event: MyAwesomeModel.UpdateEvent) in
            self.updateView()
        }

        ec.register(self) { (event: MyAwesomeModel.StoreEvent) in
            switch(event) {
            case .SUCCESS:
                print("store ok!")
            case .ERROR:
                print("store error!")
            }
        }

        // or

        ec.register(self, handler: self.onEvent)

        // or

        ec.registerOnMainThread(self, handler: onEvent)
    }

    override func viewWillDisappear(animated: Bool) {
        EventCenter.defaultCenter.unregister(self)
    }

    func updateView() {
        // ...
    }

    func onEvent(event: MyAwesomeModel.UpdateEvent) {
        self.updateView()
    }

}


class MyAwesomeModel {
  class UpdateEvent {}
  enum StoreEvent {
      case SUCCESS
      case ERROR
  }

  func notifyUpdate() {
      EventCenter.defaultCenter.post(UpdateEvent())
  }

  func notifyStoreResult() {
      EventCenter.defaultCenter.post(StoreEvent.SUCCESS)
  }
}

// If you want to see more cases, see also Tests.swift

Author

Ken Morishita, [email protected]

License

EventCenter is available under the MIT license. See the LICENSE file for more info.