InteractorController.kt

class InteractorController(private val mapProvider:MapProvider, 
                           private varargs val interactors: Interactor) {
  fun onInit(): Completable {
    return mapProvider.initMap()
              .switchMapCompletable { map ->
                Observable.fromIterable(mapInteractors.asIterable())
                  .flatMapCompletable { mapInteractor ->
                     mapInteractor.onInit(map)
                  }
              }
              .subscribe(Functions.EMPTY_ACTION, Consumer { Timber.e(it) })
  }
  
  fun onVisible(): Completable {
    return mapProvider.getMap()
              .switchMapCompletable { map ->
                Observable.fromIterable(mapInteractors.asIterable())
                  .flatMapCompletable { mapInteractor ->
                    mapInteractor.onVisible(map)
                  }
              }
              .subscribe(Functions.EMPTY_ACTION, Consumer { Timber.e(it) })
  }
}