/// <summary>
/// Register item to be displayed after next <see cref="Display"/> call
/// </summary>
/// <param name="item">Registered item</param>
internal void RegisterItem(DiagramItem item)
{
//attach items behaviours
ItemHighlighting.Attach(item);
ZOrdering.Attach(item, _orderingGroup);
DragAndDrop.Attach(item, GetPosition, SetPosition);
UpdateGlobalPosition.Attach(item);
_items.Add(item.Definition.ID, item);
if (item.IsRootItem)
{
_rootItems.Add(item);
}
}
