private void UpdateToolstipControls()
{
_currentlySelectedExternalTools.Clear();
_currentlySelectedExternalTools.AddRange(ToolsListObjView.SelectedObjects.OfType <ExternalTool>());
PropertiesGroupBox.Enabled = _currentlySelectedExternalTools.Count == 1;
var atleastOneToolSelected = _currentlySelectedExternalTools.Count > 0;
DeleteToolMenuItem.Enabled = atleastOneToolSelected;
DeleteToolToolstripButton.Enabled = atleastOneToolSelected;
LaunchToolMenuItem.Enabled = atleastOneToolSelected;
LaunchToolToolstripButton.Enabled = atleastOneToolSelected;
}