Contact emails
vmp...@chromium.org

Explainer
None


Specification
https://www.w3.org/TR/css-view-transitions-2


Summary

View Transitions project adds a tree of pseudo elements that have various 
animations applied to them. For ease of development and customization some 
niceties are provided, such as inheriting animation-duration. This feature adds 
another nicety: inherit animation-delay.



Blink component
Blink>ViewTransitions


TAG review
None


TAG review status
Not applicable


Risks




Interoperability and Compatibility

There's a small risk that developers rely on this properly not being inherited 
into the new/old pseudo elements from the group. However, it's unlikely since 
the animations are designed to work in unison. This is the reason for 
inheriting animation-duration, for example. This, and the fact that both Safari 
and Firefox are shipping this behavior makes me confident that the risk is 
minimal.


Gecko: Shipped/Shipping 
(https://github.com/w3c/csswg-drafts/issues/9817#issuecomment-2994352828)

WebKit: Shipped/Shipping 
(https://github.com/w3c/csswg-drafts/issues/9817#issuecomment-2994352828)

Web developers: No signals

Other signals:


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?

None




Debuggability

None



Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, 
ChromeOS, Android, and Android WebView)?
Yes


Is this feature fully tested by web-platform-tests?
Yes
https://wpt.fyi/results/css/css-view-transitions/style-inheritance.html?label=master&label=experimental&aligned
 (WebKit recently added animation-delay subtest which may not have been 
included in the results yet)



Flag name on about://flags
None


Finch feature name
ViewTransitionAnimationDelayInherit


Rollout plan
Will ship enabled for all users


Requires code in //chrome?
False


Estimated milestones


Shipping on desktop 140

Shipping on Android 140

Shipping on WebView 140




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, changing to naming or structure of the API in a 
non-backward-compatible way).
None


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5424291457531904?gate=5271493935890432


This intent message was generated by Chrome Platform Status.

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