Re: making page visibility a property of document instead of top level browsing context

On Mon, Aug 26, 2013 at 10:15 PM, Boris Zbarsky <bzbarsky@mit.edu> wrote:

> On 8/25/13 10:02 AM, Arvind Jain wrote:
>
>> "hidden" would mean the document is not visible to the user.
>>
>
> As in definitely not visible.
>
> That is, we would allow cases when the document is not actually visible,
> but the visibility state is still "visible", right?


I think we have to go with this definition. For example, I don't think we
want to say that a document is hidden if it's obscured by a
position:absolute div or if it's in an opacity:0 container. I'm picturing
that, in practice, we'd only report hidden if the frame is hidden due to
being outside the visible part of the top-level document (i.e. it's in the
overflow).