Comment 1 for bug 1534239

The UITK’s BottomEdgeHint component instantiates a SwipeArea. I’ve done some preliminary work in the browser to start using SwipeArea, unfortunately this is blocked by an oxide bug: bug #1459362. Until this is fixed, we would need to do a custom implementation in the browser.

Note that making the bottom edge hint clickable means that web content below it cannot be clicked. This is not a concern for pages that can be scrolled (as scrolling down the page will hide the hint), but it is a problem with pages that fit entirely in the viewport, because the hint will never auto-hide (but this behaviour could be changed).

Also note that the current implementation of BottomEdgeHint in the UITK supposedly reacts on mouse connection/removal, but in practice this code is not wired up.