public static IObservable <Unit> ObserveReset(IHotObservable <Step> stepObservable)
{
return(stepObservable
.Scan(
new { IsReset = false, Step = Step.Start },
(previous, current) =>
new
{
IsReset = (current == Step.Start) && (previous.Step != Step.Start),
Step = current
})
.Where(pair => pair.IsReset)
.SelectUnit());
}
public static IObservable <(Step Step, Result Result)> ObserveStepResult(
IHotObservable <Step> stepObservable,
IObservable <Unit> okObservable,
IObservable <Unit> cancelObservable,
IObservable <Unit> postponeObservable)
{
return(stepObservable
.SelectManyCancelPrevious(step => Observable
.Merge(
okObservable.Select(_ => Result.Ok),
cancelObservable.Select(_ => Result.Cancel),
postponeObservable.Select(_ => Result.Postpone))
.Select(result => (step, result))));
}
