Intent to extend Origin Trial: Popover API

[Mason Freed]

Hi API Owners,

We'd like to extend the Popover Origin Trial for 2 additional milestones. The original OT was 106 to 110, but due to many good discussions and bits of feedback, we'll need more time before being able to ship this API. The OT partners would like to continue experimenting in the meantime.

This request is to extend from 110 to 112.

Contact emails

mas...@chromium.org

Explainer

https://open-ui.org/components/popup.research.explainer

Specification

https://github.com/whatwg/html/pull/8221

Summary

An API that can be used to build transient user interface (UI) elements that are displayed on top of all other web app UI. These include user-interactive elements like action menus, form element suggestions, content pickers, and teaching UI. This API uses a new `popover` content attribute to enable any element to be displayed in the top layer. This is similar to the <dialog> element, but has several important differences, including light-dismiss behavior, popover interaction management, animation and event support, and the lack of a "modal" mode.

Blink component

Blink>HTML>Popover

TAG review

https://github.com/w3ctag/design-reviews/issues/743

TAG review status

Pending

Risks

Interoperability and Compatibility

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/698)

WebKit: Positive (https://github.com/WebKit/standards-positions/issues/74#issuecomment-1311566112) "Largely positive"

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?

Goals for experimentation

Validation of the shape and ergonomics of the overall popover API. Feedback should include use cases that do not work well (or that do work particularly well), performance issues, etc. Ideally, use cases should include as much of the API as possible, including multiple popover types (auto, manual), nested popovers, declarative and imperative popover invocation, etc.

Reason this experiment is being extended

Ongoing technical constraints

None

Debuggability

A feature has been added to devtools which shows all of the elements that are currently in the top layer, plus annotations of those elements in the Elements tree. Elements that use the popover API will be shown with this feature.

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?

No

Is this feature fully tested by web-platform-tests?

No

Flag name

#enable-experimental-web-platform-features

Requires code in //chrome?

False

Tracking bug

https://crbug.com/1307772

Estimated milestones

OriginTrial desktop last	112
OriginTrial desktop first	106
DevTrial on desktop	104

OriginTrial Android last	112
OriginTrial Android first	106
DevTrial on Android	104

OriginTrial webView last	112
OriginTrial webView first	106

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5463833265045504

Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/9y-Thg9UCxY/m/_4gShWjQAAAJ
Intent to Experiment: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAM%3DNeDjJOC2%2B5aHfAoN8wOx8T0gtm%3D-o6eNK5XD6Ps5iRet6zA%40mail.gmail.com

This intent message was generated by Chrome Platform Status.

[Alex Russell]

Has this feature changed in a breaking way since the first OT?

Thanks,

Alex

[Mason Freed]

On Thu, Dec 8, 2022 at 11:26 PM Alex Russell <sligh...@chromium.org> wrote:

Has this feature changed in a breaking way since the first OT?

Yes, in the course of the OT, the name of the attribute(s) changed from `popup` to `popover`. (Context here.) Some smaller details also changed, such as the removal of `defaultopen` and the animations capability.

Thanks,

Mason

[Yoav Weiss]

LGTM to extend experimentation to M112

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