[Webkit-unassigned] [Bug 271311] New: [web-animations] pause animation scheduling while style-originated animations are being updated

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=271311

            Bug ID: 271311
           Summary: [web-animations] pause animation scheduling while
                    style-originated animations are being updated
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: graouts at webkit.org
                CC: dino at apple.com, graouts at apple.com

When we will be adding animation support for the `display` property (see bug 267762) we will need to resolve animations even when the underlying style has `display: none` to see whether animations yield a different value. In that process, we may create style-originated animations that will ultimately be canceled once we're certain `display: none` is still set. As it stands, the creation of a style-originated animation will immediately lead to animation scheduling and possibly be observable through Web content by the dispatch of animation events. As such, we must pause animation scheduling while we consider new style-originated animations.

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