Czau!
I like this UI element (split window slider) in interfaces. My only concern would be how you enable an ncurses equivalent.
You don't :-( I'm afraid there's no way how to implement slider in y2-ncurses. (n)curses library - which y2-ncurses uses -simply does not offer this form of interfacing with the mouse and I doubt it will ever do so.
This feature is nice for dynamically changing the UI to suit the data displayed - but without an ncurses option will you end up with UI's that are very hard to use (or unusable) from text mode.
Oh well, it would be just another widget supported by 'fancy' UI's and not in text mode. We already have quite some of those (Date, ColoredLabel etc.). If you want to use these, you always need some UI::GetDisplayInfo or UI::HasSpecialWidget workarounds in your code and come up with alternative solution for the text-mode. Some things are just not doable in ncurses, I'm sorry B. -- \\\\\ Katarina Machalkova \\\\\\\__o YaST developer __\\\\\\\'/_ & hedgehog painter