/// <summary>
/// Converts a Windows Runtime asynchronous action to an observable sequence, ignoring its progress notifications.
/// Each observer subscribed to the resulting observable sequence will be notified about the action's successful or exceptional completion.
/// </summary>
/// <typeparam name="TProgress">The type of the reported progress objects, which get ignored by this conversion.</typeparam>
/// <param name="source">Asynchronous action to convert.</param>
/// <returns>An observable sequence that produces a unit value when the asynchronous action completes, or propagates the exception produced by the asynchronous action.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
public static IObservable <Unit> ToObservable <TProgress>(this IAsyncActionWithProgress <TProgress> source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
return(source.ToObservable_(null));
}
/// <summary>
/// Converts a Windows Runtime asynchronous action to an observable sequence, reporting its progress through the supplied progress object.
/// Each observer subscribed to the resulting observable sequence will be notified about the action's successful or exceptional completion.
/// </summary>
/// <typeparam name="TProgress">The type of the reported progress objects.</typeparam>
/// <param name="source">Asynchronous action to convert.</param>
/// <param name="progress">Progress object to receive progress notifications on.</param>
/// <returns>An observable sequence that produces a unit value when the asynchronous action completes, or propagates the exception produced by the asynchronous action.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="progress"/> is null.</exception>
public static IObservable <Unit> ToObservable <TProgress>(this IAsyncActionWithProgress <TProgress> source, IProgress <TProgress> progress)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (progress == null)
{
throw new ArgumentNullException("progress");
}
return(source.ToObservable_(progress));
}
/// <summary>
/// Converts a Windows Runtime asynchronous action to an observable sequence reporting its progress.
/// Each observer subscribed to the resulting observable sequence will be notified about the action's successful or exceptional completion.
/// </summary>
/// <typeparam name="TProgress">The type of the reported progress objects.</typeparam>
/// <param name="source">Asynchronous action to convert.</param>
/// <returns>An observable sequence that produces progress values from the asynchronous action and notifies observers about the action's completion.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
public static IObservable <TProgress> ToObservableProgress <TProgress>(this IAsyncActionWithProgress <TProgress> source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
return(Observable.Create <TProgress>(observer =>
{
var progress = observer.ToProgress();
var src = source.ToObservable_(progress);
return src.Subscribe(_ => { }, observer.OnError, observer.OnCompleted);
}));
}