Scrolling list-views with the mouse

A quick glance at the racket/gui docs didn't get me too far, so: what would it take to make the view in `list-view` scrollable with the mouse (in addition to dragging the scrollbar)?

Is this a fundamental limitation of racket/gui that such things aren't supported automatically or even easily? Or is there a simple piece of plugin code that I can add as a mixin or even a PR here?

DrRacket's editor scrolls with the mouse, so I'm sure it must be _possible_. But if it's intrinsically difficult code, I can live without it.