private void MoveAlphabetBy(int steps)
{
if (steps > 0)
{
for (var i = 0; i < steps; i++)
{
var firstLetterInner = InnerLetterViews.First();
var firstLetterOuter = OuterLetterViews.First();
InnerLetterViews.Remove(firstLetterInner);
OuterLetterViews.Remove(firstLetterOuter);
InnerLetterViews.Add(firstLetterInner);
OuterLetterViews.Add(firstLetterOuter);
}
}
else
{
for (var i = 0; i > steps; i--)
{
var lastLetterInner = InnerLetterViews.Last();
var lastLetterOuter = OuterLetterViews.Last();
InnerLetterViews.Remove(lastLetterInner);
OuterLetterViews.Remove(lastLetterOuter);
InnerLetterViews.Insert(0, lastLetterInner);
OuterLetterViews.Insert(0, lastLetterOuter);
}
}
}
public override void Initialize()
{
base.Initialize();
foreach (var letter in CommonHelper.GetShiftedAlphabet(PositionShift))
{
InnerLetterViews.Add(HelpersViewModelFactory.CreateLetter(letter));
OuterLetterViews.Add(HelpersViewModelFactory.CreateLetter(letter));
}
}
public override void Handle(LetterTranslation translation)
{
Grid.UpdateLayout();
LetterView fromView, toView;
if (translation.Direction == SignalDirection.In)
{
fromView = InnerLetterViews.First(vm => vm.Letter == translation.Input).GetView() as LetterView;
toView = OuterLetterViews.First(vm => vm.Letter == translation.Result).GetView() as LetterView;
}
else
{
fromView = OuterLetterViews.First(vm => vm.Letter == translation.Input).GetView() as LetterView;
toView = InnerLetterViews.First(vm => vm.Letter == translation.Result).GetView() as LetterView;
}
ConnectionDrawer.Draw(fromView, toView, translation.Direction);
}