private void NotifyChange(Identity elementId, NotifyCollectionChangedAction defaultAction, IModelElement item)
{
int index = _items.IndexOf(elementId);
if (defaultAction == NotifyCollectionChangedAction.Remove)
{
if (index >= 0)
{
if (item == null && DomainModel is Hyperstore.Modeling.Domain.ICacheAccessor)
{
item = ((Hyperstore.Modeling.Domain.ICacheAccessor)DomainModel).TryGetFromCache(elementId);
}
_synchronizationContext.Send(() => OnCollectionChanged(item, NotifyCollectionChangedAction.Remove, index));
_items.RemoveAt(index);
}
return;
}
if (index >= 0)
{
return;
}
if (item == null)
{
item = (T)DomainModel.Store.GetElement(elementId);
}
if (item == null || WhereClause != null && !WhereClause((T)item))
{
return;
}
//index = IndexOfCore(elementId);
//if (index == -1)
// return;
index = _items.Count;
_items.Add(elementId);
_synchronizationContext.Send(() => OnCollectionChanged(item, NotifyCollectionChangedAction.Add, index));
}