/// <summary>
/// Create the animation <see cref="Storyboard"/> that slides a <see cref="FrameworkElement"/> in from the left.
/// </summary>
/// <param name="element">The element to be animated.</param>
/// <param name="seconds">Seconds the animation takes to complete.</param>
/// <returns></returns>
public static async Task SlideAndFadeInFromLeft(this FrameworkElement element, float seconds = 0.3f, bool keepMargin = true)
{
var storyboard = new Storyboard();
storyboard.AddSlideFromLeft(seconds, element.ActualWidth, keepMargin: keepMargin);
storyboard.AddFade(seconds, PageAnimation.FadeIn);
storyboard.Begin(element);
element.Visibility = Visibility.Visible;
await Task.Delay((int)(seconds * 1000));
}
/// <summary>
/// Create the animation <see cref="Storyboard"/> that slides out to the left.
/// </summary>
/// <param name="page">The page to be animated.</param>
/// <param name="seconds">Seconds the animation takes to complete.</param>
/// <returns></returns>
public static async Task SlideAndFadeOutToLeft(this Page page, float seconds)
{
var storyboard = new Storyboard();
storyboard.AddSlideToLeft(seconds, page.WindowWidth);
storyboard.AddFade(seconds, PageAnimation.FadeOut);
storyboard.Begin(page);
page.Visibility = Visibility.Visible;
await Task.Delay((int)(seconds * 1000));
}