public virtual void AddChild(CarouselItem i)
{
i.State.ValueChanged += state => ChildItemStateChanged(i, state.NewValue);
i.ChildID = ++currentChildID;
if (lastCriteria != null)
{
i.Filter(lastCriteria);
int index = InternalChildren.BinarySearch(i, criteriaComparer);
if (index < 0)
{
index = ~index; // BinarySearch hacks multiple return values with 2's complement.
}
InternalChildren.Insert(index, i);
}
else
{
// criteria may be null for initial population. the filtering will be applied post-add.
InternalChildren.Add(i);
}
}
