Grab back keyboard focus after layout view get the focus

[zhizhangchen]

No description provided.

[grgustaf]

Merged. It would be preferable if clicking the checkbox could set keyboard focus without showing the gray rectangle. That's what a normal web page does. I'm not sure how you'd make that happen. So you don't see a rectangle, but if you press Tab you'll see that the keyboard focus was in fact there.

Also, there seems to be a bug where most of the time when you click a checkbox you see the keyboard focus flicker and appear twice. I assume this is because of duplicate focus requests happening. Minor, but should fix at some point.

Still, this is good progress so I'll merge it.

[grgustaf]

Max submitted a separate fix for the checkbox problem and his doesn't seem to have the double-focus issue, I think because he uses the "focusElement" to update focus after the fact, rather than setting it immediately. So I think that issue is now resolved.

[grgustaf]

Er but now if I unclick an already clicked checkbox that is not selected, sometimes I get a triple flash of the gray rectangle. So let's not count that one as fixed quite yet. :)