public void Transition(ITransitionControl container, FrameworkElement oldContent, FrameworkElement newContent)
{
FrameworkElement newContentToAdd = ModifyNewContent(container, newContent);
container.Add(newContentToAdd);
if (oldContent != null)
{
GetOutAnimation()
.UponCompletion(() => container.Remove(oldContent))
.AnimateOn(oldContent);
}
if (newContentToAdd != null)
{
GetInAnimation()
.AnimateOn(newContentToAdd);
}
}
void ShowBackground(ITransitionControl container)
{
if (!container.Contains(_background))
{
container.Add(_background);
Animate.The(UIElement.OpacityProperty)
.From(0d)
.To(1d)
.For(_duration)
.Create()
.AnimateOn(_background);
}
}