private void SetValue(T value)
{
LatestValue = value;
ValidationTrigger.OnNext(value);
Source.OnNext(value);
RaiseEventScheduler.Schedule(() => PropertyChanged?.Invoke(this, SingletonPropertyChangedEventArgs.Value));
}
private void OnNextAndRaiseValueChanged(ref T value)
{
// call source.OnNext
var node = _root;
while (node != null)
{
node.OnNext(value);
node = node.Next;
}
RaiseEventScheduler.Schedule(() => PropertyChanged?.Invoke(this, SingletonPropertyChangedEventArgs.Value));
}
/// <summary>
/// <para>Set INotifyDataErrorInfo's asynchronous validation, return value is self.</para>
/// </summary>
/// <param name="validator">If success return IO<null>, failure return IO<IEnumerable>(Errors).</param>
/// <returns>Self.</returns>
public ReactiveProperty <T> SetValidateNotifyError(Func <IObservable <T>, IObservable <IEnumerable?> > validator)
{
ValidatorStore.Value.Add(validator); //--- cache validation functions
var validators = ValidatorStore.Value
.Select(x => x(IsIgnoreInitialValidationError ? ValidationTrigger : ValidationTrigger.StartWith(LatestValue)))
.ToArray(); //--- use copy
ValidateNotifyErrorSubscription.Disposable = Observable
.CombineLatest(validators)
.Select(xs =>
{
if (xs.Count == 0)
{
return(null);
}
if (xs.All(x => x == null))
{
return(null);
}
var strings = xs
.Where(x => x != null)
.OfType <string>();
var others = xs
.Where(x => x is not string)
.Where(x => x != null)
.SelectMany(x => x !.Cast <object?>());
return(strings.Concat(others));
})
.Subscribe(x =>
{
var prevHasErrors = HasErrors;
CurrentErrors = x;
var currentHasErrors = HasErrors;
var handler = ErrorsChanged;
if (handler != null)
{
RaiseEventScheduler.Schedule(() => handler(this, SingletonDataErrorsChangedEventArgs.Value));
}
var propertyChangedHandler = PropertyChanged;
if (prevHasErrors != currentHasErrors && propertyChangedHandler != null)
{
RaiseEventScheduler.Schedule(() => propertyChangedHandler(this, SingletonPropertyChangedEventArgs.HasErrors));
}
ErrorsTrigger.Value.OnNext(x);
});
return(this);
}
/// <summary>
/// <para>Set INotifyDataErrorInfo's asynchronous validation, return value is self.</para>
/// </summary>
/// <param name="validator">If success return IO<null>, failure return IO<IEnumerable>(Errors).</param>
/// <returns>Self.</returns>
public WeakReactiveProperty <T> SetValidateNotifyError(Func <IObservable <T>, IObservable <IEnumerable> > validator)
{
ValidatorStore.Value.Add(validator); //--- cache validation functions
var validators = ValidatorStore.Value
.Select(x => x(ValidationTrigger.StartWith(LatestValue)))
.ToArray(); //--- use copy
ValidateNotifyErrorSubscription.Disposable
= Observable.CombineLatest(validators)
.Select(xs =>
{
if (xs.Count == 0)
{
return(null);
}
if (xs.All(x => x == null))
{
return(null);
}
var strings = xs
.OfType <string>()
.Where(x => x != null);
var others = xs
.Where(x => !(x is string))
.Where(x => x != null)
.SelectMany(x => x.Cast <object>());
return(strings.Concat(others));
})
.WeakSubscribe(new AnonymousObserver <IEnumerable <object> >(x =>
{
CurrentErrors = x;
var handler = ErrorsChanged;
if (handler != null)
{
RaiseEventScheduler.Schedule(
() => handler(this, SingletonDataErrorsChangedEventArgs.Value));
}
ErrorsTrigger.Value.OnNext(x);
}));
return(this);
}
