Bug 180830 – [Web Animations] Implement the cancel() method on Animation

• Component: Animations
• Status: RESOLVED FIXED

[Antoine Quint]

We need to expose the cancel() method on the Animation interface.

[Radar WebKit Bug Importer]

<rdar://problem/36055816>

[Antoine Quint]

Created attachment 329387 [details]
Patch

[Dean Jackson]

Comment on attachment 329387 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=329387&action=review

> Source/WebCore/animation/WebAnimation.cpp:342
> +        // 2. Reject the current finished promise with a DOMException named "AbortError".
> +        m_finishedPromise.reject(Exception { AbortError });

Are you confirming that all these changes are covered by existing tests? I don't see any changes in the expected results that are looking for this. If not, you should be writing new tests.

> Source/WebCore/animation/WebAnimation.cpp:356
> +        // 4. Create an AnimationPlaybackEvent, cancelEvent.
> +        // 5. Set cancelEvent's type attribute to cancel.
> +        // 6. Set cancelEvent's currentTime to null.
> +        // 7. Let timeline time be the current time of the timeline with which animation is associated. If animation is not associated with an
> +        //    active timeline, let timeline time be n unresolved time value.
> +        // 8. Set cancelEvent's timelineTime to timeline time. If timeline time is unresolved, set it to null.
> +        // 9. If animation has a document for timing, then append cancelEvent to its document for timing's pending animation event queue along
> +        //    with its target, animation. If animation is associated with an active timeline that defines a procedure to convert timeline times
> +        //    to origin-relative time, let the scheduled event time be the result of applying that procedure to timeline time. Otherwise, the
> +        //    scheduled event time is an unresolved time value.

Do you have bugs for all these missing steps?

[Antoine Quint]

(In reply to Dean Jackson from comment #3)
> Comment on attachment 329387 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=329387&action=review
> 
> > Source/WebCore/animation/WebAnimation.cpp:342
> > +        // 2. Reject the current finished promise with a DOMException named "AbortError".
> > +        m_finishedPromise.reject(Exception { AbortError });
> 
> Are you confirming that all these changes are covered by existing tests? I
> don't see any changes in the expected results that are looking for this. If
> not, you should be writing new tests.
> 
> > Source/WebCore/animation/WebAnimation.cpp:356
> > +        // 4. Create an AnimationPlaybackEvent, cancelEvent.
> > +        // 5. Set cancelEvent's type attribute to cancel.
> > +        // 6. Set cancelEvent's currentTime to null.
> > +        // 7. Let timeline time be the current time of the timeline with which animation is associated. If animation is not associated with an
> > +        //    active timeline, let timeline time be n unresolved time value.
> > +        // 8. Set cancelEvent's timelineTime to timeline time. If timeline time is unresolved, set it to null.
> > +        // 9. If animation has a document for timing, then append cancelEvent to its document for timing's pending animation event queue along
> > +        //    with its target, animation. If animation is associated with an active timeline that defines a procedure to convert timeline times
> > +        //    to origin-relative time, let the scheduled event time be the result of applying that procedure to timeline time. Otherwise, the
> > +        //    scheduled event time is an unresolved time value.
> 
> Do you have bugs for all these missing steps?

They're all implemented via the single function call below those comments:

enqueueAnimationPlaybackEvent(eventNames().cancelEvent, std::nullopt, m_timeline ? m_timeline->currentTime() : std::nullopt);

[Antoine Quint]

Committed r225927: <https://trac.webkit.org/changeset/225927>