/// <summary>
/// Gets an observable for a <see cref="RoutedEvent{TEventArgs}"/>.
/// </summary>
/// <param name="o">The object to listen for events on.</param>
/// <param name="routedEvent">The routed event.</param>
/// <param name="routes">The routing strategies to listen to.</param>
/// <param name="handledEventsToo">Whether handled events should also be listened for.</param>
/// <returns>
/// An observable which fires each time the event is raised.
/// </returns>
public static IObservable <TEventArgs> GetObservable <TEventArgs>(
this IInteractive o,
RoutedEvent <TEventArgs> routedEvent,
RoutingStrategies routes = RoutingStrategies.Direct | RoutingStrategies.Bubble,
bool handledEventsToo = false)
where TEventArgs : RoutedEventArgs
{
o = o ?? throw new ArgumentNullException(nameof(o));
routedEvent = routedEvent ?? throw new ArgumentNullException(nameof(routedEvent));
return(Observable.Create <TEventArgs>(x => o.AddDisposableHandler(
routedEvent,
(_, e) => x.OnNext(e),
routes,
handledEventsToo)));
}
