public override void LoadKeysAndTriggerArrange(INotifyCollectionChanged target, IObservableCollectionAccessMediator mediator)
{
lock (_lock)
{
if (target != null)
{
_list = target as IList <T>;
if (_list == null)
{
throw new NonListMonitoringIsNotSupportedException();
}
mediator.SafeAccessCollection(target, GetKeys);
var sorter = new Func <Func <ItemKey, TKey>, List <ItemKey> >(
s => _orderDescending
? _keys.OrderByDescending(s).ToList()
: _keys.OrderBy(s).ToList());
_keys = sorter(v => v.Key);
_orderDispatcher.BeginInvoke(new Action(ArrangeItems));
}
else
{
_keys = new List <ItemKey>();
_orderDispatcher.BeginInvoke(new Action(ArrangeItems));
}
}
}
