(but please remember to request reviews for the other review gates in
chromestatus)
On 1/3/24 1:10 PM, Mike Taylor wrote:
LGTM2
On 1/3/24 12:54 PM, Chris Harrelson wrote:
LGTM1
On Wed, Jan 3, 2024 at 9:44 AM Joey Arhar <jar...@chromium.org> wrote:
Contact emails
jar...@chromium.org
Explainer
None
Specification
https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class
Summary
This is the new syntax for the CSS custom state feature for
custom elements. The old syntax, :--foo, is being deprecated and
removed. This new syntax, :state(foo), is shipping in WebKit.
Deprecation for old syntax:
https://groups.google.com/a/chromium.org/g/blink-dev/c/JvpHoUfhJYE
Spec for new syntax: https://github.com/whatwg/html/pull/8467
Blink component
Blink>HTML>CustomElements
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EHTML%3ECustomElements>
TAG review
None
TAG review status
Not applicable
Risks
Interoperability and Compatibility
The new syntax will not have any interop or compat risks. WebKit
has enabled the new syntax by default. I will implement and ship
the new syntax alongside the old syntax so that developers can
have access to both at the same time on stable and migrate to the
new syntax.
/Gecko/: No signal
(https://bugzilla.mozilla.org/show_bug.cgi?id=1588763) I believe
this is being implemented in gecko by Keith.
/WebKit/: Shipped/Shipping
(https://github.com/WebKit/WebKit/pull/22223)
/Web developers/: No signals
/Other signals/:
Ergonomics
This will be used in tandem with custom elements. This API will
not make it hard for chrome to maintain good performance.
Activation
Developers will be able to take advantage of this feature
immediately. Documentation and outreach could be useful for the
deprecation of the old syntax and migration to the new syntax.
Security
There are no security/privacy risks for this CSS feature.
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
Styles applied by the custom state pseudo classes will appear in
the styles sidebar of DevTools.
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
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
Yes
https://wpt.fyi/results/custom-elements/state?label=experimental&label=master&aligned
<https://wpt.fyi/results/custom-elements/state?label=experimental&label=master&aligned>
Flag name on chrome://flags
CustomStatePseudoRename
Finch feature name
CustomStatePseudoRename
Requires code in //chrome?
False
Estimated milestones
DevTrial on desktop 122
DevTrial on Android 122
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/5586433790443520
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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