protected override FrameworkElement ModifyNewContent(ITransitionControl container, FrameworkElement newContent)
{
if (newContent == null)
{
HideBackground(container);
container.Remove(_border);
return null;
}
ShowBackground(container);
_border = WrapInBorder(newContent);
_border.Opacity = 0;
SetPosition(_border);
newContent.SizeChanged += (sender, e) => SetPosition(_border);
var ctrl = container.AsControl();
ctrl.SizeChanged += (sender, e) => SetPosition(_border);
return _border;
}
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 HideBackground(ITransitionControl container)
{
if (container.Contains(_background))
{
Animate.The(UIElement.OpacityProperty)
.From(1d)
.To(0d)
.For(_duration)
.UponCompletion(() => container.Remove(_background))
.Create()
.AnimateOn(_background);
}
}