Contact emails
[email protected]

Explainer
No information provided


Specification
https://drafts.csswg.org/css-pseudo-4/#CSSPseudoElement-interface


Summary
Support for CSSPseudoElement - which is currently only defined for ::after, 
::before, and ::marker - is now being extended to include several new 
pseudo-elements: ::backdrop: useful for closing a dialog when the backdrop is 
clicked, without interfering with clicks inside the dialog's content. This 
eliminates the need for complex intersection logic to determine where the click 
occurred. ::scroll-marker: can be used to collect click statistics. view 
transitions: enables geometry-aware view transitions.It also allows you to 
intercept a view transition mid-flight to start a new one, utilizing the 
coordinates of the currently animating element to avoid sudden visual jumps.


Blink component
Blink>CSS


Web Feature ID
CSSPseudoElement


Motivation
Support for CSSPseudoElement - which is currently only defined for ::after, 
::before, and ::marker - is now being extended to include several new 
pseudo-elements: ::backdrop: useful for closing a dialog when the backdrop is 
clicked, without interfering with clicks inside the dialog's content. This 
eliminates the need for complex intersection logic to determine where the click 
occurred. ::scroll-marker: can be used to collect click statistics. view 
transitions: enables geometry-aware view transitions.It also allows you to 
intercept a view transition mid-flight to start a new one, utilizing the 
coordinates of the currently animating element to avoid sudden visual jumps.


Initial public proposal
No information provided


TAG review
No information provided


TAG review status
Pending


Goals for experimentation
None


Risks




Interoperability and Compatibility
No information provided

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/1345)

WebKit: No signal (https://github.com/WebKit/standards-positions/issues/607)

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?
No information provided



Debuggability
No information provided


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-pseudo/backdrop-pseudo-element-click.tentative.html
 
https://wpt.fyi/results/css/css-pseudo/CSSPseudoElement-view-transitions-scoped.tentative.html
 
https://wpt.fyi/results/css/css-pseudo/CSSPseudoElement-view-transitions.tentative.html
 
https://wpt.fyi/results/css/css-pseudo/events-on-pseudo-element-mutation.tentative.html


Flag name on about://flags
No information provided


Finch feature name
No information provided


Non-finch justification
No information provided


Rollout plan
Will ship enabled for all users


Requires code in //chrome?
False


Estimated milestones


DevTrial on desktop 147

DevTrial on Android 147




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).
No information provided


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/6516055192240128?gate=6196512880197632


This intent message was generated by Chrome Platform Status.

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