ExamplePresenter.kt

open class ExamplePresenter : ExampleContract.Presenter {
	
	var view: ExampleContract.View? = null
	
	
	override fun attach(view: ExampleContract.View) {
		this.view = view
	}

	override fun fetchProfileName() {
		
		val name: String
		
		try {
			name = fetchProfileNameFromRepository()
		} catch (io: IOException) {
			view?.onProfileNameRequestFailed(io)
			return
		}
		
		view?.onProfileNameReceived(name)
	}

	open fun fetchProfileNameFromRepository(): String {
		//Long operation that calls the repository and return the name or throws an exception
	}
	
	override fun detach() {
		view = null
	}
}