namespace Xamarin.Forms.Platform.iOS { internal static class EffectUtilities { public static void RegisterEffectControlProvider(IEffectControlProvider self, IElementController oldElement, IElementController newElement) { IElementController controller = oldElement; if (controller != null && controller.EffectControlProvider == self) controller.EffectControlProvider = null; controller = newElement; if (controller != null) controller.EffectControlProvider = self; } } }