internal RibbonTabView(IRibbonTabViewModel ribbonTabViewModel)
        {
            InitializeComponent();

            if (!DesignerProperties.GetIsInDesignMode(this))
            {
                DataContext = ribbonTabViewModel ?? ServiceLocator.Current.GetInstance<IRibbonTabViewModel>();
            }
        }
		public RibbonTabView(IRibbonTabViewModel viewModel)
		{
			InitializeComponent();
			viewModel.View = this;
		}