protected override void OnInit(ISwApplication app, ISwDocument doc)
        {
            m_Doc = doc;
            UpdateSelectionsViewModel();

            m_Doc.Selections.ClearSelection += OnClearSelection;
            m_Doc.Selections.NewSelection   += OnNewSelection;

            m_Tab = m_AddIn.CreateFeatureManagerTabWpf <SelectionsControl>(doc);

            if (m_Tab.IsControlCreated)
            {
                m_Tab.Control.DataContext = m_ViewModel;
            }

            m_Tab.ControlCreated += OnControlCreated;
        }