public static IDisposable SubscribeStateChange <TResult>(this IObservable <IOperationState <TResult> > self, Action <TResult> onResult = null, Action <double> onProgress = null, Action <OperationError> onError = null, Action <IOperationState <TResult> > onCompleted = null) where TResult : class
{
TResult result = null;
ModelSource source = ModelSource.Unknown;
ModelIdentifierBase id = null;
double progress = 0;
OperationError error = null;
bool isCancelled = false;
return(self
.Subscribe(state => {
TryFire(onProgress, ref progress, state.Progress);
TryFire(onError, ref error, state.Error);
if (TryFire(onResult, ref result, state.Result))
{
id = state.ResultIdentifier;
source = state.ResultSource;
}
isCancelled = state.IsCancelled;
},
() => onCompleted?.Invoke(new OperationState <TResult>(result, progress, error, isCancelled, source, id))
));
}
public static IObserver <IOperationState <TResult> > OnNextError <TResult>(this IObserver <IOperationState <TResult> > self, OperationError error, double progress, ModelSource source = ModelSource.Unknown) where TResult : class
{
self.OnNext(new OperationState <TResult>(error: error, progress: progress, source: source));
return(self);
}