private void UpdateCurves() {
var contextMenu = new ContextMenu();
var item = new MenuItem { Header = AppStrings.CarSpecs_ScaleCurvesToPowerTorqueHeader };
item.Click += ScaleCurves;
item.ToolTip = AppStrings.CarSpecs_ScaleCurvesToPowerTorque_Tooltip;
contextMenu.Items.Add(item);
item = new MenuItem { Header = AppStrings.CarSpecs_RecalculateCurvesUsingDataAndPowerTorqueHeader };
item.Click += RecalculateAndScaleCurves;
item.ToolTip = AppStrings.CarSpecs_RecalculateCurvesUsingDataAndPowerTorque_Tooltip;
contextMenu.Items.Add(item);
item = new MenuItem { Header = AppStrings.CarSpecs_RecalculateCurvesUsingDataOnlyHeader };
item.Click += RecalculateCurves;
item.ToolTip = AppStrings.CarSpecs_RecalculateCurvesUsingDataOnly_Tooltip;
contextMenu.Items.Add(item);
contextMenu.IsOpen = true;
}