private static void UpdateItemsLeft()
{
var jmlItemsLeft = todoItemList.ItemsLeft();
itemLeft.InnerHTML = jmlItemsLeft.ToString() + " Items left";
SetButtonClearCompletedVisible();
buttonCheckAll.CheckAll = todoItemList.AllComplete();
if (todoItemList.IsEmpty())
{
buttonCheckAll.CheckAll = false;
radioButtonQueryItems.Selected = RadioButtonQueryItems.ShowOptions.All;
footer.Hide();
}
}