Contact emails
[email protected], [email protected]

Explainer
https://open-ui.org/components/overscroll-actions.explainer


Specification
https://github.com/w3c/csswg-drafts/pull/14532


Summary
This feature adds a set of primitives to allow elements to anchor to overscroll 
areas of other elements. It further allows these elements to be revealed with 
swipe gestures, similar to scrollers.


Blink component
Blink>Scroll


Web Feature ID
Missing feature


TAG review
No information provided


TAG review status
Pending


Goals for experimentation
Gather developer feedback on the shape and behavior of the feature


Origin Trial documentation link
https://open-ui.org/components/overscroll-actions.explainer


Risks




Interoperability and Compatibility
No information provided

Gecko: No signal

WebKit: No signal

Web developers: Positive We had some developer trial feedback to indicate 
interest.

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



Ongoing technical constraints
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
This is currently tested in wpt_internal and will be upstreamed to wpt.


DevTrial instructions
https://github.com/vmpstr/htmldemos/blob/master/gestures/devtrial.md


Flag name on about://flags
enable-experimental-web-platform-features


Finch feature name
OverscrollAreas


Requires code in //chrome?
False


Tracking bug
https://issues.chromium.org/443719046


Estimated milestones


Origin trial desktop first 157

Origin trial desktop last 162

DevTrial on desktop 149

DevTrial on Android 149




Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5261280285949952?gate=5080882666930176


Links to previous Intent discussions
Intent to Prototype: 
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68beedec.050a0220.257801.036b.GAE%40google.com



This intent message was generated by Chrome Platform Status.

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