On 11/8/23 3:53 PM, Vladimir Levin wrote:
Contact emails
vmp...@chromium.org, nrosent...@chromium.org
Explainer
https://github.com/vmpstr/web-proposals/blob/main/explainers/view-transition-types.md
Specification
https://drafts.csswg.org/css-view-transitions-2/#the-active-view-transition-pseudo
Summary
This feature allows View transition API use to be customized for
different types of transitions. Specifically, this adds an ability to
add "types" to `startViewTransition` call which will identify the
types of the transition. As well, it will match a pseudo-class, called
`:active-view-transitions(...)` with a parameter matching the type for
the duration of the view transition. Combined these two features
provide a way for the author to declare several view transitions once
and only trigger one at a time. See example usage in the spec:
https://drafts.csswg.org/css-view-transitions-2/#the-active-view-transition-pseudo
Blink component
Blink>ViewTransitions>SPA
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EViewTransitions%3ESPA>
TAG review
https://github.com/w3ctag/design-reviews/issues/908
TAG review status
Pending
Risks
Interoperability and Compatibility
There are minimal interop and copmat risks. This feature is an
extension to the View Transitions API that makes it more ergonomic to
specify multiple transitions declaratively, while triggering only one
of them at a time.
/Gecko/: No signal
(https://github.com/mozilla/standards-positions/issues/905)
/WebKit/: No signal
(https://github.com/WebKit/standards-positions/issues/266)
/Web developers/: No (strong) signals, the feature request came from a
web developer: https://github.com/w3c/csswg-drafts/issues/8960
/Other signals/:
Ergonomics
This feature would be used with the View Transitions API to be able to
easier maintain a declarative set of multiple transitions that can be
triggered. This solution uses a descendant combinator heavily to
selectively style elements in the DOM, but this is not any different
from the polyfill approach of toggling a class on :root.
Activation
This feature can be used directly and fairly easily.
Security
There are no additional security considerations over the View
Transitions API.
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
This feature is debuggable in the same way as the View Transitions
API, and also in the same way as other CSS properties.
Will this feature be supported on all six Blink platforms
(Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes
Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
No
Any reason why?
Flag name on chrome://flags
ViewTransitionTypes
Finch feature name
ViewTransitionTypes
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1466251
Estimated milestones
Shipping on desktop 121
Shipping on Android 121
Shipping on WebView 121
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).
None
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5089552511533056
Links to previous Intent discussions
Intent to prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADsXd2NjgR_%2BTbJbU5O%2BiyhnqxypDAUh7LWHUCWy%3DNnaBCY%2B1g%40mail.gmail.com
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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