Success Criterion 2.2.9 Animation from interactions

[GreggVan]

For non-essential animations triggered by a user action, there is a mechanism to disable the animations yet still perform the action.

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From this wording it is unclear if it must be possible to disable the animation before the user action, or if it know that it must be possible to cancel the animation after it launches. The former could make things quite complicated meaning including a special control next to everything that has an animation. For some products this would mean adding a control besides every control or something more abstract like a control at the top of the page etc.

If the intent is only to mean that the person should be able to cancel the animation then this should be made clear.

POTENTIAL SOLUTION
For non-essential animations triggered by a user action, there is a mechanism to cancel the animations without cancelling the action.

[alastc]

Hi Greg,

The intent is that the user can prevent them from happening in the first place, a cancelling mechanism would undermine the benefit as you might have already triggered the vertigo/nausea/negative symptom.

The simple (but under-supported *) method is to use the prefers-reduced-motion media query, and any of these animations are wrapped in that query so they do not run if that preference is set.

In the meantime, the technique would be to have a site-level user preference such as a button at the top, or something in your profile. (Or don't use these types of animation.)

(*) Safari supports it now, Firefox is prioritising it in 2018, not sure about Chrome/Edge.

[awkawk]

Official WG Response: Thank you for your comment. This SC is intended to prevent animation from occurring rather than stopping animation that have started. Support may be provided through the inclusion of multiple controls to prevent animation, as well as by avoiding the use of animation completely, but we expect that growing support for relevant media queries will provide additional ways to support this AAA SC.

[GreggVan]

OK Thx H

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