[Webkit-unassigned] [Bug 63202] New: webkitEnterFullscreen should not require user gesture if mediaPlaybackRequiresUserAction is false

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63202

           Summary: webkitEnterFullscreen should not require user gesture
                    if mediaPlaybackRequiresUserAction is false
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: adamjernst at gmail.com


Calling .webkitEnterFullscreen() will raise INVALID_STATE_ERR except from a user-initiated gesture. If document()->settings()->mediaPlaybackRequiresUserAction() is false, I believe webkitEnterFullscreen should be allowed without a user gesture.

The machinery behind the gesture requirement for webkitEnterFullscreen is roughly the same as that behind the load() and play() restrictions requiring a user-initiated gesture. The mediaPlaybackRequiresUserAction property was added for the express purpose of letting users disable these restrictions (which we do in our iOS app's UIWebView).

mediaPlaybackRequiresUserAction is mapped into a corresponding "BehaviorRestrictionFlag" on HTMLMediaElement. (See WebCore sources/html/HTMLMediaElement.h.) This is checked in play() and load().

Adapting webkitEnterFullscreen accordingly would be a relatively small change: a new BehaviorRestrictionFlag set accordingly and updating HTMLVideoElement::webkitEnterFullscreen to check it.

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