private void Toggle()
{
ListOfT newSelection = this.selection;
this.selection = this.selectionSet.selection;
int newIndexOfPrimarySelection = this.indexOfPrimarySelection;
this.indexOfPrimarySelection = this.selectionSet.indexOfPrimarySelection;
this.selectionSet.SetSelectionInternal(newSelection, newIndexOfPrimarySelection);
}
public SelectionChangeUndoUnit(SelectionSet <T, ListOfT> selectionSet, ListOfT selection, int indexOfPrimarySelection)
{
this.selectionSet = selectionSet;
this.selection = selection;
this.indexOfPrimarySelection = indexOfPrimarySelection;
}
