/// <summary>
/// Ensures and creates if needed the animator for an element. Will also
/// verify that a translate transform is present.
/// </summary>
/// <param name="targetElement">The target element.</param>
/// <param name="animator">The animator reference.</param>
public static void EnsureAnimator(FrameworkElement targetElement, ref TransformYAnimator animator)
{
if (animator == null)
{
TranslateTransform transform = TransformYAnimator.GetTranslateTransform(targetElement);
if (transform != null)
{
animator = new TransformYAnimator(transform);
}
}
if (animator == null)
{
throw new InvalidOperationException("The animation system could not be prepared for the target element.");
}
}
