Bug 206806 – Support 'allow="fullscreen"' feature policy

• Component: New Bugs
• Status: RESOLVED FIXED

[Jer Noble]

Support 'allow="fullscreen"' feature policy

[Jer Noble]

<rdar://problem/55640448>

[Jer Noble]

Created attachment 388799 [details]
Patch

[youenn fablet]

Comment on attachment 388799 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=388799&action=review

> Source/WebCore/dom/FullscreenManager.cpp:64
> +    }

This code is very similar with UserMediaController isAllowedToUse.
Maybe we should add a routine for crawling up the tree.

> Source/WebCore/html/FeaturePolicy.cpp:148
> +        if (iframe.hasAttribute(allowfullscreenAttr) || iframe.hasAttribute(webkitallowfullscreenAttr)) {

GTK does not like it, unified build issue maybe, HTMLNames.h missing probably.

> LayoutTests/http/tests/fullscreen/fullscreen-feature-policy.html:55
> +    <iframe allow="fullscreen *" data-enabled="true" src="http://localhost:8000/resources/pointer-lock/inner-iframe.html"></iframe>

Maybe add a test like allow="fullscreen http://localhost..."?

Also, there are probably WPT tests that are testing this but there is no rebasing.
Are there some WPT test we should import?

[youenn fablet]

Looking at WPT, I see LayoutTests/imported/w3c/web-platform-tests/html/semantics/embedded-content/the-iframe-element/iframe-allow.html and LayoutTests/imported/w3c/web-platform-tests/html/semantics/embedded-content/the-iframe-element/iframe-allowfullscreen.html.

But it seems they fail since they test document.fullscreenEnabled.
It would be nice to add support for it along document.webkitFullscreenEnabled.

[Jer Noble]

(In reply to youenn fablet from comment #3)
> Comment on attachment 388799 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=388799&action=review
> 
> > Source/WebCore/dom/FullscreenManager.cpp:64
> > +    }
> 
> This code is very similar with UserMediaController isAllowedToUse.
> Maybe we should add a routine for crawling up the tree.
> 
> > Source/WebCore/html/FeaturePolicy.cpp:148
> > +        if (iframe.hasAttribute(allowfullscreenAttr) || iframe.hasAttribute(webkitallowfullscreenAttr)) {
> 
> GTK does not like it, unified build issue maybe, HTMLNames.h missing
> probably.

Good point; will add. 

> > LayoutTests/http/tests/fullscreen/fullscreen-feature-policy.html:55
> > +    <iframe allow="fullscreen *" data-enabled="true" src="http://localhost:8000/resources/pointer-lock/inner-iframe.html"></iframe>
> 
> Maybe add a test like allow="fullscreen http://localhost..."?

Sure! It’s super easy to add new tests this way. 

> Also, there are probably WPT tests that are testing this but there is no
> rebasing.
> Are there some WPT test we should import?

I checked in wpt/feature-policy, but it looks like those depend on a DOM-exposed mechanism for querying feature policies that we haven’t yet implemented, and wpt/fullscreen didn’t include any of these checks. I didn’t think to check wpt/.../the-iframe-element/.

[Jer Noble]

(In reply to youenn fablet from comment #4)
> Looking at WPT, I see
> LayoutTests/imported/w3c/web-platform-tests/html/semantics/embedded-content/
> the-iframe-element/iframe-allow.html and
> LayoutTests/imported/w3c/web-platform-tests/html/semantics/embedded-content/
> the-iframe-element/iframe-allowfullscreen.html.
> 
> But it seems they fail since they test document.fullscreenEnabled.
> It would be nice to add support for it along
> document.webkitFullscreenEnabled.

We are holding off unprefixing the Fullscreen APIs till we fully implement the current spec. This feature policy work is some of that, but the largest remaining work is layout and stacking context changes.

[Jer Noble]

Created attachment 388804 [details]
Patch for landing

[Jer Noble]

Created attachment 388805 [details]
Patch for landing

[Jer Noble]

Created attachment 388810 [details]
Patch for landing

[Jer Noble]

Created attachment 388863 [details]
Patch for landing

[WebKit Commit Bot]

Comment on attachment 388863 [details]
Patch for landing

Clearing flags on attachment: 388863

Committed r255162: <https://trac.webkit.org/changeset/255162>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Ahmad Saleem]

*** Bug 74660 has been marked as a duplicate of this bug. ***