Intent to implement and ship ::backdrop pseudo-element for Fullscreen API

[Xidorn Quan]

Summary: This pseudo-element is rendered immediately below every
fullscreen element, and covers the other part of the document by
default. This is part of the effort to update our Fullscreen API
implementation to the latest spec. And it is the last non-trivial part
before I'm going to unprefix the Fullscreen API.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1064843

Link to standard: https://fullscreen.spec.whatwg.org/#::backdrop-pseudo-element

Platform coverage: all

Target release: 44

Preference behind which this will be implemented: none

DevTools bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1209831

Other browser support:
IE has shipped a prefixed version of this pseudo-element for
fullscreen since 11, and Edge shpped it unprefixed:
https://msdn.microsoft.com/en-us/library/dn312072%28v=vs.85%29.aspx
Blink has shipped this pseudo-element unprefixed for modal <dialog>
element (but not yet for fullscreen)

- Xidorn

[Jean-Yves Perrier]

On 16/10/2015 02:39, Xidorn Quan wrote:

> Blink has shipped this pseudo-element unprefixed for modal <dialog>
> element (but not yet for fullscreen)
>

I have a side question here: do we plan to support ::backdrop for modal
<dialog> in the future, or is it a Blink oddity.

--
Jean-Yves Perrier
Senior St. Project Manager / Documentation Project / MDN

[Xidorn Quan]

On Sun, Oct 18, 2015 at 12:59 AM, Jean-Yves Perrier <jype...@gmail.com> wrote:
> On 16/10/2015 02:39, Xidorn Quan wrote:
>

>> Blink has shipped this pseudo-element unprefixed for modal <dialog>
>> element (but not yet for fullscreen)
>>

> I have a side question here: do we plan to support ::backdrop for modal
> <dialog> in the future, or is it a Blink oddity.

I think the answer is yes. I may start looking into <dialog> later.

- Xidorn