On Tuesday, September 26, 2023 at 1:10:34 AM UTC+2 Traian Captan wrote:

Contact emailstcap...@chromium.org

ExplainerNone

Specificationhttps://w3c.github.io/IntersectionObserver/#dom-
intersectionobserver-scrollmargin

Summary

Intersection Observer scrollMargin allows developers to observe targets 
inside nested scroll containers that are currently clipped away by the 
scroll containers. This is achieved by expanding the container's clipping 
rect by the scrollMargin when calculating the intersection. 


Blink componentBlink 
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink>

Search tagsIntersection Observer 
<https://chromestatus.com/features#tags:Intersection%20Observer>, 
scrollMargin <https://chromestatus.com/features#tags:scrollMargin>

TAG reviewNone

TAG review statusNot applicable

Risks


Interoperability and Compatibility

None


*Gecko*: Positive (https://github.com/w3c/IntersectionObserver/issues/431)

*WebKit*: Positive (https://github.com/w3c/IntersectionObserver/issues/431)


Do you know of Gecko and WebKit's implementation plans for this?


*Web developers*: Positive (https://github.com/w3c/
IntersectionObserver/issues/431)

*Other signals*:

Ergonomics

N/A


Activation

N/A


Security

N/A


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

N/A


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>
?Yes

Flag name on chrome://flagsIntersectionObserverScrollMargin

Finch feature nameNone

Non-finch justification

This feature is behind an enabled-by-default flag that can be disabled if 
needed.


Requires code in //chrome?False

Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1469500

Estimated milestonesShipping on desktop119DevTrial on desktop119Shipping on 
Android119DevTrial on Android119Shipping on WebView119

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 Statushttps://chromestatus.com/
feature/5091020593430528

Links to previous Intent discussionsIntent to prototype: https://groups.
google.com/a/chromium.org/d/msgid/blink-dev/CAFxahvsWGzF5au6c5%
2BfVrh1hOCq_Y0rY0VF_bsmO8VVysg3QTg%40mail.gmail.com

This intent message was generated by Chrome Platform Status 
<https://chromestatus.com/>.

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