void HideBackground(ITransitionControl container)
{
if (container.Contains(_background))
{
Animate.The(UIElement.OpacityProperty)
.From(1d)
.To(0d)
.For(_duration)
.UponCompletion(() => container.Remove(_background))
.Create()
.AnimateOn(_background);
}
}
void ShowBackground(ITransitionControl container)
{
if (!container.Contains(_background))
{
container.Add(_background);
Animate.The(UIElement.OpacityProperty)
.From(0d)
.To(1d)
.For(_duration)
.Create()
.AnimateOn(_background);
}
}