static int Bounded(int index, int count, SelectBoundMode mode)
{
switch (mode)
{
case SelectBoundMode.LOOP_OVER_NONE:
index %= count + 1;
if (index < 0)
{
index += count + 1;
}
return(index == count ? -1 : index);
case SelectBoundMode.LOOP:
index %= count;
return(index < 0 ? index + count : index);
case SelectBoundMode.CLAMP:
return(index < 0 ? 0 : index >= count ? count - 1 : index);
default:
return(index < 0 ? -1 : index >= count ? count - 1 : index);
}
}
void Increment(SelectBoundMode incrementBoundMode, int step)
{
T currentItem = set.FirstOrDefault();
int currentIndex = select.list.IndexOf(currentItem);
if (currentIndex != -1)
{
DoExit(currentItem);
}
int nextIndex = Bounded(currentIndex + 1, select.Count, incrementBoundMode);
T nextItem = select.list[nextIndex];
if (nextIndex != -1)
{
DoEnter(nextItem);
}
DoChange();
}
public void Previous(SelectBoundMode boundMode) => Increment(boundMode, -1);
public void Next(SelectBoundMode boundMode) => Increment(boundMode, 1);
public void Previous <TLayer>(SelectBoundMode boundMode) => GetLayer <TLayer>().Previous(boundMode);
public void Previous(object layerKey, SelectBoundMode boundMode) => GetLayer(layerKey).Previous(boundMode);
public void Previous(SelectBoundMode boundMode) => GetLayer(defaultLayerKey).Previous(boundMode);
public void Next <TLayer>(SelectBoundMode boundMode) => GetLayer <TLayer>().Next(boundMode);
public void Next(object layerKey, SelectBoundMode boundMode) => GetLayer(layerKey).Next(boundMode);
public void Next(SelectBoundMode boundMode) => GetLayer(defaultLayerKey).Next(boundMode);