Closed Bug 618046 Opened 12 years ago Closed 11 years ago

No focus change event when Shift+Tab at top of screen


(Core :: Disability Access APIs, defect)

Windows 7
Not set





(Reporter: dipalerm, Assigned: surkov)


(Blocks 2 open bugs, )


User-Agent:       Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Tablet PC 2.0; MALC)
Build Identifier: Firefox 3.6.12

Open any web page.  Use Shift+Tab repeatedly until focus is on top most item in the page.  Press Shift+Tab again and note that no FocusChanged event is fired.  Therefore, screen readers do not know that focus has moved to the document.

Reproducible: Always
Blocks: jaws
This is confirmed with NVDA, too.
Component: Disability Access → Disability Access APIs
Ever confirmed: true
Product: Firefox → Core
QA Contact: disability.access → accessibility-apis
Summary: JAWS - No focus change event when Shift+Tab at top of screen → No focus change event when Shift+Tab at top of screen
Version: unspecified → Trunk
Is it regression? How bad is this bug from user experience point?
From Frank on 12/10/2010:
Yes, it is a regression.  It does not fail in FF 3.5.11.
I expect it is not a great huge deal for screen reader user, but it is confusing.
Duplicate of this bug: 644455
As noted in bug 644455, this also occurs when shift+tabbing to the top of an iframe document.
Enn, do I understand right that DOM focus event is not fired for DOM document in this case because it's considered that DOM document focus state wasn't changed (it had focus when its child element was focused and it has focus when it's focused)? If this is correct then how would I catch this case to fire a11y focus event (in sense what events could I listen or what algorithm could be)?
That's correct. The document is still focused, but the content that was focused received a blur event, which you can listen for.
Blocks: 546068
Depends on: 673958
Flags: in-testsuite?
Duplicate of this bug: 661623
I verified that this is fixed in the last try build for bug 673958.
fixed by bug 673958
Assignee: nobody → surkov.alexander
Closed: 11 years ago
Flags: in-testsuite? → in-testsuite+
Resolution: --- → FIXED
Target Milestone: --- → mozilla10
Verified fixed in Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20110929 Firefox/10.0a1
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