protected virtual void SetSelectionWithUndo(string description, ListOfT newSelection, T newPrimarySelection)
{
this.OnSelectionChanging((IList <T>)newSelection);
int primarySelection = this.GetIndexOfPrimarySelection(newSelection, newPrimarySelection);
if (this.editTransactionFactory != null)
{
description = string.Format((IFormatProvider)CultureInfo.CurrentCulture, description, new object[1]
{
(object)this.namingHelper.Name
});
using (SceneEditTransaction editTransaction = this.editTransactionFactory.CreateEditTransaction(description, true))
{
editTransaction.AddUndoUnit((IUndoUnit) new SelectionSet <T, ListOfT> .SelectionChangeUndoUnit(this, newSelection, primarySelection));
editTransaction.Commit();
}
}
else
{
this.SetSelectionInternal(newSelection, primarySelection);
}
if (this.ViewModel == null || !this.IsExclusive || newSelection.Count <= 0)
{
return;
}
this.ViewModel.EnforceExclusiveSelection((ISelectionSet)this);
}