/// <summary>
/// Helper method that is used while <see cref="IKeyBindingHandler"/> doesn't support repetitions of <see cref="IKeyBindingHandler{T}.OnPressed"/>.
/// Simulates repetitions by continually invoking a delegate according to the default key repeat rate.
/// </summary>
/// <remarks>
/// The returned delegate can be cancelled to stop repeat events from firing (usually in <see cref="IKeyBindingHandler{T}.OnReleased"/>).
/// </remarks>
/// <param name="handler">The <see cref="IKeyBindingHandler{T}"/> which is handling the repeat.</param>
/// <param name="scheduler">The <see cref="Scheduler"/> to schedule repetitions on.</param>
/// <param name="action">The <see cref="Action"/> to be invoked once immediately and with every repetition.</param>
/// <returns>A <see cref="ScheduledDelegate"/> which can be cancelled to stop the repeat events from firing.</returns>
public static ScheduledDelegate BeginKeyRepeat(this IKeyBindingHandler handler, Scheduler scheduler, Action action)
{
action();
ScheduledDelegate repeatDelegate = new ScheduledDelegate(action, handler.Time.Current + 250, 70);
scheduler.Add(repeatDelegate);
return(repeatDelegate);
}
/// <summary>
/// Helper method that is used while <see cref="IKeyBindingHandler"/> doesn't support repetitions of <see cref="IKeyBindingHandler{T}.OnPressed"/>.
/// Simulates repetitions by continually invoking a delegate according to the default key repeat rate.
/// </summary>
/// <remarks>
/// The returned delegate can be cancelled to stop repeat events from firing (usually in <see cref="IKeyBindingHandler{T}.OnReleased"/>).
/// </remarks>
/// <param name="handler">The <see cref="IKeyBindingHandler{T}"/> which is handling the repeat.</param>
/// <param name="scheduler">The <see cref="Scheduler"/> to schedule repetitions on.</param>
/// <param name="action">The <see cref="Action"/> to be invoked once immediately and with every repetition.</param>
/// <param name="initialRepeatDelay">The delay imposed on the first repeat. Defaults to <see cref="INITIAL_DELAY"/>.</param>
/// <returns>A <see cref="ScheduledDelegate"/> which can be cancelled to stop the repeat events from firing.</returns>
public static ScheduledDelegate BeginKeyRepeat(this IKeyBindingHandler handler, Scheduler scheduler, Action action, double initialRepeatDelay = INITIAL_DELAY)
{
action();
ScheduledDelegate repeatDelegate = new ScheduledDelegate(action, handler.Time.Current + initialRepeatDelay, REPEAT_INTERVAL);
scheduler.Add(repeatDelegate);
return(repeatDelegate);
}