I've made a slider in the past, like a scroll bar, but with panels. One big one, a small one either end for up/down or left/right, and one in the middle as the thumb.
But these aren't keyboard friendly, and I am going to need for people to be able to cursor up/down/left/right and page up/down to be able to move the thumb. Is there an instant option to enable a panel to get focus and the keyboard inputs?