/// <summary>
/// RegisterAsyncTask registers an TPL/Async method that runs when a
/// Command gets executed and returns no result.
/// </summary>
/// <param name="calculationFunc">The function to be run in the
/// background.</param>
/// <returns>An Observable that signals when the Task completes, on
/// the UI thread.</returns>
public static IObservable <Unit> RegisterAsyncTask(this LegacyRxCmd This, Func <object, Task> calculationFunc)
{
Contract.Requires(calculationFunc != null);
// NB: This PermaRef isn't exactly correct, but the people using
// this method probably are Doing It Wrong, so let's let them
// continue to do so.
return(This.RegisterAsync(x => calculationFunc(x).ToObservable())
.Publish().PermaRef());
}
/// <summary>
/// RegisterAsyncFunction registers an asynchronous method that returns a result
/// to be called whenever the Command's Execute method is called.
/// </summary>
/// <param name="calculationFunc">The function to be run in the
/// background.</param>
/// <param name="scheduler"></param>
/// <returns>An Observable that will fire on the UI thread once per
/// invoecation of Execute, once the async method completes. Subscribe to
/// this to retrieve the result of the calculationFunc.</returns>
public static IObservable <TResult> RegisterAsyncFunction <TResult>(this LegacyRxCmd This,
Func <object, TResult> calculationFunc,
IScheduler scheduler = null)
{
Contract.Requires(calculationFunc != null);
var asyncFunc = calculationFunc.ToAsync(scheduler ?? RxApp.TaskpoolScheduler);
return(This.RegisterAsync(asyncFunc));
}
/// <summary>
/// RegisterAsyncTask registers an TPL/Async method that runs when a
/// Command gets executed and returns the result
/// </summary>
/// <returns>An Observable that will fire on the UI thread once per
/// invoecation of Execute, once the async method completes. Subscribe to
/// this to retrieve the result of the calculationFunc.</returns>
public static IObservable <TResult> RegisterAsyncTask <TResult>(this LegacyRxCmd This, Func <object, Task <TResult> > calculationFunc)
{
Contract.Requires(calculationFunc != null);
return(This.RegisterAsync(x => calculationFunc(x).ToObservable()));
}