Intent to Experiment: Dark mode support for web apps v2

[Louise Brett]

Contact emails

loub...@google.com, gle...@chromium.org, mgi...@chromium.org

Explainer

V1: https://github.com/WICG/manifest-incubations/blob/gh-pages/user-preferences-explainer.md

V2: https://github.com/w3c/manifest/issues/1045

Specification

Summary

Add a field to the web app manifest which allows apps to specify a different theme color and background color for dark mode.

Blink component

Blink>AppManifest

TAG review

https://github.com/w3ctag/design-reviews/issues/696

TAG review status

Pending

Risks

Interoperability and Compatibility

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/630)

WebKit: Positive (https://github.com/w3c/manifest/issues/1045)

Web developers: No signals - Positive signals from v1 but no signals on the new format

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

Allow web developers to use this field and provide feedback on the new format.

Reason this experiment is being extended

The manifest format has significantly changed per https://github.com/w3c/manifest/issues/1045 to use CSS media queries. We would like to run a new OT to get feedback from web developers about this new format.

Ongoing technical constraints

Debuggability

chrome://web-app-internals can be used for debugging, and this has been added to the DevTools Application pane.

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

No

Not supported on Android

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

No - the v2 format does not have web platform tests yet.

Flag name

chrome://flags/#enable-experimental-web-platform-features

Requires code in //chrome?

True

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1318305

Launch bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1279284

Estimated milestones

OriginTrial desktop last	114
OriginTrial desktop first	109

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5714780426862592

Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/Y6zNtG0f-6A
Intent to Experiment v1: https://groups.google.com/a/chromium.org/g/blink-dev/c/ftoKq32Baz4
Intent to Extend Experiment v1: https://groups.google.com/a/chromium.org/g/blink-dev/c/2c8msRrrcF0

This intent message was generated by Chrome Platform Status.

[Rick Byers]

On Fri, Nov 4, 2022 at 2:24 AM 'Louise Brett' via blink-dev <blin...@chromium.org> wrote:

Contact emails

loub...@google.com, gle...@chromium.org, mgi...@chromium.org

Explainer

V1: https://github.com/WICG/manifest-incubations/blob/gh-pages/user-preferences-explainer.md

V2: https://github.com/w3c/manifest/issues/1045

Specification

Summary

Add a field to the web app manifest which allows apps to specify a different theme color and background color for dark mode.

Blink component

Blink>AppManifest

TAG review

https://github.com/w3ctag/design-reviews/issues/696

TAG review status

Pending

Risks

Interoperability and Compatibility

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/630)

WebKit: Positive (https://github.com/w3c/manifest/issues/1045)

Note that to minimize risk of misunderstandings, only official WebKit standards position entries count as positive signals. It's not necessary for OT, but probably a good idea to get a position request filed ahead of a future I2S.

Web developers: No signals - Positive signals from v1 but no signals on the new format

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

Allow web developers to use this field and provide feedback on the new format.

Reason this experiment is being extended

The manifest format has significantly changed per https://github.com/w3c/manifest/issues/1045 to use CSS media queries. We would like to run a new OT to get feedback from web developers about this new format.

Switching to CSS MQ syntax is indeed a pretty significant change. LGTM to experiment M109-M114 

Ongoing technical constraints

Debuggability

chrome://web-app-internals can be used for debugging, and this has been added to the DevTools Application pane.

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

No

Not supported on Android

Has there been discussion with Android folks? Eg. +Glenn Hartmann? Ideally we'd ship support for all OSes at the same time, but at a minimum we'll want to make sure the design we ship for desktop is also reasonable for mobile in the future.

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

No - the v2 format does not have web platform tests yet.

Flag name

chrome://flags/#enable-experimental-web-platform-features

Requires code in //chrome?

True

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1318305

Launch bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1279284

Estimated milestones

OriginTrial desktop last	114
OriginTrial desktop first	109

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5714780426862592

Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/Y6zNtG0f-6A
Intent to Experiment v1: https://groups.google.com/a/chromium.org/g/blink-dev/c/ftoKq32Baz4
Intent to Extend Experiment v1: https://groups.google.com/a/chromium.org/g/blink-dev/c/2c8msRrrcF0

This intent message was generated by Chrome Platform Status.

--
You received this message because you are subscribed to the Google Groups "blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+...@chromium.org.
To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CABeVxY1nHwDDrShzu4m-RM%2B6UhM7Lp%2BB-TywkUfBrGEO3WPkSg%40mail.gmail.com.

[Rick Byers]

Sorry, I missed that Chris already approved this in a duplicate thread: https://groups.google.com/a/chromium.org/g/blink-dev/c/WqIBRabU3C0

[Louise Brett]

On Saturday, November 5, 2022 at 2:40:58 AM UTC+11 rby...@chromium.org wrote:

Sorry, I missed that Chris already approved this in a duplicate thread: https://groups.google.com/a/chromium.org/g/blink-dev/c/WqIBRabU3C0

Sorry its slightly confusing, they are different - that other thread was to extend the current OT to avoid a gap before this one with the new syntax starts.

On Fri, Nov 4, 2022 at 10:46 AM Rick Byers <rby...@chromium.org> wrote:

On Fri, Nov 4, 2022 at 2:24 AM 'Louise Brett' via blink-dev <blin...@chromium.org> wrote:

Contact emails

loub...@google.com, gle...@chromium.org, mgi...@chromium.org

Explainer

V1: https://github.com/WICG/manifest-incubations/blob/gh-pages/user-preferences-explainer.md

V2: https://github.com/w3c/manifest/issues/1045

Specification

Summary

Add a field to the web app manifest which allows apps to specify a different theme color and background color for dark mode.

Blink component

Blink>AppManifest

TAG review

https://github.com/w3ctag/design-reviews/issues/696

TAG review status

Pending

Risks

Interoperability and Compatibility

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/630)

WebKit: Positive (https://github.com/w3c/manifest/issues/1045)

Note that to minimize risk of misunderstandings, only official WebKit standards position entries count as positive signals. It's not necessary for OT, but probably a good idea to get a position request filed ahead of a future I2S.

Ah good to know, thanks. I'll get onto filing that. 

Web developers: No signals - Positive signals from v1 but no signals on the new format

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

Allow web developers to use this field and provide feedback on the new format.

Reason this experiment is being extended

The manifest format has significantly changed per https://github.com/w3c/manifest/issues/1045 to use CSS media queries. We would like to run a new OT to get feedback from web developers about this new format.

Switching to CSS MQ syntax is indeed a pretty significant change. LGTM to experiment M109-M114 

Thanks! 

Ongoing technical constraints

Debuggability

chrome://web-app-internals can be used for debugging, and this has been added to the DevTools Application pane.

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

No

Not supported on Android

Has there been discussion with Android folks? Eg. +Glenn Hartmann? Ideally we'd ship support for all OSes at the same time, but at a minimum we'll want to make sure the design we ship for desktop is also reasonable for mobile in the future.

There hasn't been any recent discussion - I'll reach out to the Android folks.

[Rick Byers]

On Sun, Nov 6, 2022 at 5:52 PM Louise Brett <loub...@google.com> wrote:

On Saturday, November 5, 2022 at 2:40:58 AM UTC+11 rby...@chromium.org wrote:

Sorry, I missed that Chris already approved this in a duplicate thread: https://groups.google.com/a/chromium.org/g/blink-dev/c/WqIBRabU3C0

Sorry its slightly confusing, they are different - that other thread was to extend the current OT to avoid a gap before this one with the new syntax starts.

Ah, sorry for my misunderstanding. Makes sense. Still LGTM

Thank you.

[Thomas Steiner]

The v2 explainer https://github.com/w3c/manifest/issues/1045 is very confusing, as several syntaxes are being discussed there. For the origin trial https://developer.chrome.com/origintrials/#/view_trial/2057019129801474049, it would be great if there was a code sample of the finally implemented syntax. Could this be added?

[Louise Brett]

Thanks Thomas - I've just added a comment there.

[Louise Brett]

M114 has recently branched which is the last milestone with this OT enabled. The feedback from the trial showed there was very little interest so we are just going to let it expire.

Let me know if you want to chat further about this.