Intent to Ship: Transitions on specified discrete properties
Joey Arhar
Contact emails
fla...@chromium.org, jar...@chromium.orgExplainer
https://github.com/w3c/csswg-drafts/issues/4441#issuecomment-1329749962Specification
https://github.com/w3c/csswg-drafts/pull/8520Summary
Allows transitions of discrete properties to be started on properties explicitly listed in the transition-property list. These transitions run using the same logic as an animation on those properties performing a flip at 50% by default but can be customized through the use of the transitionstart event and web-animations-1 APIs for modifying transition animations.
Blink component
Blink>AnimationTAG review
NoneTAG review status
Not applicableRisks
Interoperability and Compatibility
This is unlikely to have a big compatibility risk since the transition-property: all keyword does not include discrete properties. This will only affect sites which have explicitly listed discrete properties in transition-property. However given this used to be unsupported, it is unlikely to have been specified on most sites. This will also now be doing what the developer requested.
Gecko: No signal
WebKit: No signal
Web developers: No signals
Other signals:
Ergonomics
This will be used in tandem with the popover attribute and CSSDisplayAnimation. This feature will not make it hard for chrome to maintain good performance.
Activation
This will not be hard for developers to use immediately.
Security
This does not do anything that the developer could not have set with their own stylesheets or script and shouldn't have any risks.
WebView application risks
Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?
This is not high risk for WebView, but is controlled by a base::Feature anyway.
Debuggability
This feature would be consistent with existing CSS transitions, showing up the dev tools animation timeline and generating transition events. No new interfaces should be needed.
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
YesIs this feature fully tested by web-platform-tests?
YesFlag name
CSSTransitionDiscreteRequires code in //chrome?
FalseTracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1399631Measurement
This feature does not have any UseCounters.Availability expectation
I'm not sure when this will be implemented in safari and firefox. I don't think that they have started implementing this yet, but we only very recently got this resolved in CSSWG.Adoption expectation
This will be the best practice for animating the entry and exit if dialogs and popovers immediately.Adoption plan
I don't have an adoption plan.Non-OSS dependencies
Does the feature depend on any code or APIs outside the Chromium open source repository and its open-source dependencies to function?
This feature does not depend on anything outside of chromium.Sample links
https://output.jsbin.com/buquher/quietEstimated milestones
M114
Anticipated spec changes
Open questions about a feature may be a source of future web compat or interop issues. Please list open issues (e.g. links to known github issues in the project for the feature specification) whose resolution may introduce web compat/interop risk (e.g., changing to naming or structure of the API in a non-backward-compatible way).
This change has been specced and I don't think any more changes to the spec will happen.Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5071230636392448Links to previous Intent discussions
Intent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJh39TMR_5Tz3OHKo16aB3h6vqLKZBaHt3rh%2Bse454y-hT%2B1-A%40mail.gmail.comJoey Arhar
Rick Byers
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Alex Russell
We discussed this in the API owners meeting today. Since position requests were just filed, we'd like to give this another week to see if anyone has any feedback. But otherwise we're excited to see this ship.RickOn Wed, Mar 15, 2023 at 6:10 PM Joey Arhar <jar...@chromium.org> wrote:
TAG review: https://github.com/w3ctag/design-reviews/issues/825WebKit standards position: https://github.com/WebKit/standards-positions/issues/148Mozilla standards position: https://github.com/mozilla/standards-positions/issues/763
On Wed, Mar 15, 2023 at 1:30 PM Joey Arhar <jar...@chromium.org> wrote:
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Daniel Bratell
LGTM2
/Daniel
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Rick Byers
LGTM2
/Daniel
On 2023-04-05 17:39, Alex Russell wrote:
Thanks everyone for adding an Explainer, etc. I'm a little worried that this is another feature that skimped on developer engagement (Explainers) and review (TAG) until I2S. They both came very late, and if the feature itself wasn't seemingly landed as a closed spec PR, I'd be blocking this for another few weeks/months until TAG had a chance to properly discuss.
Let's not do this again?
Regardless, LGTM1.
On Wednesday, March 22, 2023 at 8:56:33 AM UTC-7 Rick Byers wrote:
We discussed this in the API owners meeting today. Since position requests were just filed, we'd like to give this another week to see if anyone has any feedback. But otherwise we're excited to see this ship.
Rick
On Wed, Mar 15, 2023 at 6:10 PM Joey Arhar <jar...@chromium.org> wrote:
TAG review: https://github.com/w3ctag/design-reviews/issues/825WebKit standards position: https://github.com/WebKit/standards-positions/issues/148Mozilla standards position: https://github.com/mozilla/standards-positions/issues/763
On Wed, Mar 15, 2023 at 1:30 PM Joey Arhar <jar...@chromium.org> wrote:
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Joey Arhar
Mike Taylor
Thanks for the heads up.
Mind sharing some links to the compat issues?
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