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Re: [Page Visibility] Spec Updates

From: Arvind Jain <arvind@google.com>
Date: Thu, 12 May 2011 22:52:23 -0700
Message-ID: <BANLkTi=UcCwhM6nBYa_P4-CBBPP7t5bbEw@mail.gmail.com>
To: Sigbjørn Vik <sigbjorn@opera.com>
Cc: "public-web-perf@w3.org" <public-web-perf@w3.org>
Re. using Document vs. Window, do we have consensus on using Document?
Could folks express any concerns they may have with using Document?


On Thu, May 12, 2011 at 1:09 AM, Sigbjørn Vik <sigbjorn@opera.com> wrote:
> On Wed, 11 May 2011 23:57:16 +0200, Karen Anderson (IE)
> <Karen.Anderson@microsoft.com> wrote:
>> Regarding the conversation around whether the visibilityState should be
>> PAGE_HIDDEN vs PAGE_VISIBLE in the case that the window is not minimized but
>> is fully obscured by another window:  We all seem to agree that this
>> detection is hard and has odd meaning implications for mobile or tablet
>> devices, but furthermore, I brought up the following point on today's call.
>>  Many, if not most, accessibility tools completely overlap the target
>> window.  For example, magnifier applications demonstrate this.  And
>> depending on the screen resolution, on-screen keyboards also have the
>> possible effect of covering the entire window.  There could be other
>> scenarios as well.  Given this, we should report visible for any
>> non-minimized window, obscured or not.
> The browser might have more information, particularily in the case of
> multiple tabs and/or windows it might know that a tab/window obscured by
> another tab/window is fully hidden, even though it is not minimized. The
> spec could leave it up to the browser with wording like the following:
> HIDDEN: Used when the browser is confident that no part of the page is
> visible to the user, for instance when the page is minimized or completely
> covered by another page. An explanation that being hidden by other
> applications might not indicate hidden to the user might also be needed.
> --
> Sigbjørn Vik
> Quality Assurance
> Opera Software
Received on Friday, 13 May 2011 05:52:50 UTC

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