private static void DequeueModalTransition()
{
if (ModalQueue.Count < 1 || TransitionInProgress)
{
return;
}
var state = ModalQueue.Dequeue();
if (state.ModalController != null)
{
TransitionInProgress = true;
GetTopmostViewController(state.Presenter).PresentViewController(state.ModalController, state.IsAnimated, () =>
{
TransitionInProgress = false;
DequeueModalTransition();
});
}
else if (state.Presenter != null && state.Presenter.PresentedViewController != null)
{
TransitionInProgress = true;
state.Presenter.DismissViewController(state.IsAnimated, () =>
{
TransitionInProgress = false;
DequeueModalTransition();
});
}
}
internal void UnregisterModal(Window control)
{
ModalQueue.Remove(control);
}
/// <summary>
/// Enqueues a modal presentation or dismissal.
/// </summary>
/// <param name='presenter'>
/// The presenting view controller
/// </param>
/// <param name='modal'>
/// The controller to present or null if dismissing the currently presented controller.
/// </param>
/// <param name='animated'>
/// Whether to animate the presentation or dismissal.
/// </param>
public static void EnqueueModalTransition(UIViewController presenter, UIViewController modal, bool animated)
{
ModalQueue.Enqueue(new ModalTransitionState(presenter, modal, animated));
DequeueModalTransition();
}
internal void RegisterModal(Window control)
{
ModalQueue.Add(control);
}