WorkflowDesigner.DesignSurfaceController.SelectItem C# (CSharp) Method

    private void SelectItem(ISelectable item)
    {
      if (SelectedItemHost == item) return;

      if (SelectedItemHost != null)
      {
        SelectedItemHost.IsSelected = false;
        SelectedItemHost.ReleaseMouseCapture();
        SelectedItemHost = null;
      }

      if (item != null)
      {
        SelectedItemHost = item;
        SelectedItemHost.IsSelected = true;
        SelectedItemHost.CaptureMouse();
      }

      _surface.RemoveSelectionCommand.RaiseCanExecuteChanged();
      //SelectionService.SelectedComponent = control;
    }