255317 - Never lose focus if element/ancestor is hidden, destroyed or disabled

Status: RESOLVED DUPLICATE of bug 570835

(Core :: DOM: UI Events & Focus Handling, defect, P2)

Description

[Aaron Leventhal]

This is spun off from bug 255187

If any element becomes unfocusable for any reason (destroyed, hidden or disabled
are the reasons I can think of right away), then the focus should automatically
advance to the next focusable item.

Comment 1

[Aaron Leventhal]

We've taken care of any cases where focus/keynav is totally locked up -> minor

Comment 2

[David Bolter [:davidb] (NeedInfo me for attention)]

Mass un-assigning bugs assigned to Aaron.

Comment 3

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

When focused element becomes hidden by CSS visibility, this bug can still be reproduced on current Nightly build.

> data:text/html,<input autofocus id="i"><input><script>window.addEventListener("load", function () { var i = document.getElementById("i"); i.style.visibility = "hidden"; setTimeout(function () { i.style.visibility = "visible"; }, 10000); }, false);</script>

This testcase sets focus to the first <input> and hide it at load event. 10 sec later, it's shown again. Even during it's hidden, I can edit the content of <input>.

Comment 4

[Neil Deakin]

This is covered by 570835 pretty much.

Comment 6

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1527381