public static Task <T> WaitUntilExecuteAsync <T>(this IAsyncReactiveCommand <T> source, CancellationToken cancellationToken = default(CancellationToken))
{
var tcs = new CancellableTaskCompletionSource <T>();
var subscription = source.Subscribe(x => { tcs.TrySetResult(x); return(Observable.ReturnUnit()); });
cancellationToken.Register(Callback, Tuple.Create(tcs, subscription), false);
return(tcs.Task);
}
public static Task <T> WaitUntilValueChangedAsync <T>(this IReadOnlyReactiveProperty <T> source, CancellationToken cancellationToken = default(CancellationToken))
{
var tcs = new CancellableTaskCompletionSource <T>();
var subscription = source.Subscribe(x => tcs.TrySetResult(x), ex => tcs.TrySetException(ex), () => tcs.TrySetCanceled());
cancellationToken.Register(Callback, Tuple.Create(tcs, subscription), false);
return(tcs.Task);
}
public static Task <T> WaitUntilExecuteAsync <T>(this IReactiveCommand <T> source, CancellationToken cancellationToken = default(CancellationToken))
{
var tcs = new CancellableTaskCompletionSource <T>();
var disposable = new SingleAssignmentDisposable();
disposable.Disposable = source.Subscribe(x => {
disposable.Dispose(); // finish subscription.
tcs.TrySetResult(x);
}, ex => tcs.TrySetException(ex), () => tcs.TrySetCanceled());
cancellationToken.Register(Callback, Tuple.Create(tcs, disposable.Disposable), false);
return(tcs.Task);
}
public static Task <T> WaitUntilValueChangedAsync <T>(this IReadOnlyReactiveProperty <T> source, CancellationToken cancellationToken = default(CancellationToken))
{
var tcs = new CancellableTaskCompletionSource <T>();
var disposable = new SingleAssignmentDisposable();
if (source.HasValue)
{
// Skip first value
var isFirstValue = true;
disposable.Disposable = source.Subscribe(x =>
{
if (isFirstValue)
{
isFirstValue = false;
return;
}
else
{
disposable.Dispose(); // finish subscription.
tcs.TrySetResult(x);
}
}, ex => tcs.TrySetException(ex), () => tcs.TrySetCanceled());
}
else
{
disposable.Disposable = source.Subscribe(x =>
{
disposable.Dispose(); // finish subscription.
tcs.TrySetResult(x);
}, ex => tcs.TrySetException(ex), () => tcs.TrySetCanceled());
}
cancellationToken.Register(Callback, Tuple.Create(tcs, disposable.Disposable), false);
return(tcs.Task);
}