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Request for review of Page Visibility Level 2 (the visibility state of a Document when UA is fully obscured by an accessibility tool)

From: Xiaoqian Wu <xiaoqian@w3.org>
Date: Wed, 25 Jul 2018 00:28:29 +0800
To: public-apa@w3.org
Cc: cooper@w3.org
Message-ID: <e3b57b062d207d219aac605eea40aad4@w3.org>
Hello APA friends,

The Web Performance Working Group would like to publish a new version of 
the Page Visibility specification:
   https://www.w3.org/TR/page-visibility-2/

In which we would like to clarify the visibility state of a page when it 
is fully obscured by an accessibility tool, now we have a pull request 
<https://pr-preview.s3.amazonaws.com/siusin/page-visibility/pull/38.html#visibilitystate-attribute> 
to the spec which says:
[[
return the VisibilityState value that best matches the visibility state 
of doc:
...
Return "visible" if:
...
The user agent is fully obscured by an accessibility tool, like a 
magnifier, but a view of the doc is shown.
...

When possible, if the user agent is fully obscured by another 
application, the visibilityState attribute SHOULD return "hidden", 
except if a view of the doc is displayed in an accessibility tool.
]]

We would like hear your feedback on:
1) should the Document be "visible" or "hidden" when it is fully 
obscured by an accessibility tool?
2) is it possible to detect it when the UA is fully obscured by an 
accessibility tool?

If there are thoughts on these questions, please let us know by reply to 
the open discussion on GitHub 
<https://github.com/w3c/page-visibility/pull/38> or to this thread.

We would appreciate your comments no later than Wednesday 8 August 2018.

Thanks.

-xiaoqian
Received on Tuesday, 24 July 2018 16:28:30 UTC

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