void Internal.ICancelDelegate.Invoke(Internal.ICancelValueContainer valueContainer)
{
CancelCallbacks();
CancelProgressListeners();
object currentValue = _valueOrPrevious;
_valueOrPrevious = valueContainer;
valueContainer.Retain();
// This might be called synchronously when it's registered to an already canceled token. In that case, _valueOrPrevious will be null.
if (currentValue == null)
{
return;
}
// Otherwise, the promise is either waiting for its previous, or it's in the handle queue.
if (currentValue is Promise)
{
// Remove this from previous' next branches.
((Internal.ITreeHandleableCollection)currentValue).Remove(this);
Internal.AddToHandleQueueBack(this);
}
else
{
// Rejection maybe wasn't caught.
((Internal.IValueContainer)currentValue).ReleaseAndMaybeAddToUnhandledStack();
// Don't add to handle queue since it's already in it.
}
}
