public static MenuOptionKey?GetOptionKey(string menuLabel, IEnumerable <IMenuOption> menuOptions, MenuOptionKey?selectedOption, bool allowNull)
{
Setup(menuLabel, menuOptions, selectedOption);
while (true)
{
var consoleKey = Console.ReadKey(true).Key;
switch (consoleKey)
{
case ConsoleKey.Escape:
case ConsoleKey.LeftArrow:
if (allowNull)
{
return(TearDown(null));
}
break;
case ConsoleKey.Enter:
case ConsoleKey.RightArrow:
return(TearDown(MenuOptions[CurrentOptionIndex].Key));
default:
if (IsMoveKey(consoleKey))
{
continue;
}
if (TryParseToMenuOptionKey(consoleKey, out selectedOption) && MenuOptions.Any(mo => mo.Key == selectedOption))
{
return(TearDown(selectedOption));
}
break;
}
}
}
