[Webkit-unassigned] [Bug 271365] New: [web-animations] add support for canceling style-originated animations silently

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Mar 21 00:49:38 PDT 2024


https://bugs.webkit.org/show_bug.cgi?id=271365

            Bug ID: 271365
           Summary: [web-animations] add support for canceling
                    style-originated animations silently
           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. In 276414 at main we created a list of style-originated animations created during a style update. We must now add support for canceling that group of style-originated animations in a way that is not script observable, or "silently" in Web Animations parlance.

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