/// <summary>
/// Handle <see cref="ChangeToken.OnChange(Func{IChangeToken}, Action)"/> after a delay that discards any duplicate invocations within that period of time.
/// Useful for working around issue like described here: https://github.com/aspnet/AspNetCore/issues/2542
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="changeTokenFactory"></param>
/// <param name="listener"></param>
/// <param name="state"></param>
/// <param name="delay"></param>
/// <returns></returns>
public static IDisposable OnChangeDebounce(Func <IChangeToken> changeTokenFactory, Action listener, int delayInMilliseconds = DefaultDelayInMilliseconds)
{
var debouncer = new Debouncer(TimeSpan.FromMilliseconds(delayInMilliseconds));
var token = ChangeToken.OnChange(changeTokenFactory, () => debouncer.Debouce(listener));
return(token);
}
/// <summary>
/// Handle <see cref="ChangeToken.OnChange{TState}(Func{IChangeToken}, Action{TState}, TState)"/> after a delay that discards any duplicate invocations within that period of time.
/// Useful for working around issue like described here: https://github.com/aspnet/AspNetCore/issues/2542
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="changeTokenFactory"></param>
/// <param name="listener"></param>
/// <param name="state"></param>
/// <param name="delay"></param>
/// <returns></returns>
public static IDisposable OnChangeDebounce <T>(Func <IChangeToken> changeTokenFactory, Action <T> listener, T state, int delayInMilliseconds = DefaultDelayInMilliseconds)
{
var debouncer = new Debouncer <T>(TimeSpan.FromMilliseconds(delayInMilliseconds));
var token = ChangeToken.OnChange <T>(changeTokenFactory, s => debouncer.Debounce(listener, s), state);
return(token);
}