Load error state

ErrorState.kt

class ErrorState(private val failed: ItemId, private val error: Throwable) : CommonMachineState<LceGesture, LceUiState>() {
    override fun doStart() {
        setUiState(LceUiState.Error(error))
    }

    override fun doProcess(gesture: LceGesture) = when (gesture) {
        LceGesture.Back -> onBack()
        LceGesture.Retry -> onRetry()
        LceGesture.Exit -> onExit()
        else -> Timber.d("Unhandled gesture: %s", gesture)
    }

    private fun onRetry() {
        setMachineState(LoadingState(failed))
    }

    private fun onBack() {
        setMachineState(ItemListState())
    }

    private fun onExit() {
        setMachineState(TerminatedState())
    }
}