private void OnTransitionChanged(TransitioningContentControl source, AvaloniaPropertyChangedEventArgs e)
{
var oldTransition = (TransitionType)e.OldValue;
var newTransition = (TransitionType)e.NewValue;
if (source.IsTransitioning)
{
source.AbortTransition();
}
//// find new transition
//Storyboard newStoryboard = source.GetStoryboard(newTransition);
//// unable to find the transition.
//if (newStoryboard == null)
//{
// // could be during initialization of xaml that presentationgroups was not yet defined
// if (VisualStates.TryGetVisualStateGroup(source, PresentationGroup) == null)
// {
// // will delay check
// source.CurrentTransition = null;
// }
// else
// {
// // revert to old value
// source.SetValue(TransitionProperty, oldTransition);
// throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "Temporary removed exception message", newTransition));
// }
//}
//else
//{
// source.CurrentTransition = newStoryboard;
//}
}
private void OnIsTransitioningPropertyChanged(TransitioningContentControl o, AvaloniaPropertyChangedEventArgs e)
{
if (!o.allowIsTransitioningPropertyWrite)
{
o.IsTransitioning = (bool)e.OldValue;
throw new InvalidOperationException();
}
}
private void OnRestartTransitionOnContentChangePropertyChanged(TransitioningContentControl o, AvaloniaPropertyChangedEventArgs e)
{
o.OnRestartTransitionOnContentChangeChanged((bool)e.OldValue, (bool)e.NewValue);
}
private void OnContentChangeChanged(TransitioningContentControl o, AvaloniaPropertyChangedEventArgs e)
{
StartTransition(e.OldValue, e.NewValue);
}