1package list
 2
 3// FocusedRenderCallback is a helper function that returns a render callback
 4// that marks items as focused during rendering.
 5func FocusedRenderCallback(list *List) RenderCallback {
 6	return func(idx, selectedIdx int, item Item) Item {
 7		if focusable, ok := item.(Focusable); ok {
 8			focusable.SetFocused(list.Focused() && idx == selectedIdx)
 9			return focusable.(Item)
10		}
11		return item
12	}
13}