[blink-dev] Intent to Extend Experiment: Tabbed web apps

[Brett Wilson]

Hi Blink owners,

We would like to apply to extend the Tabbed web apps
 origin trial until
November 26th, 2024.

This API is already approved to ship in 126 (Intent to Ship thread
)
and the flag has been enabled in the 126 branch.

However, we have noticed an issue with the origin trial system which will
create a significant gap in functionality for ChromeOS Long-Term Support
(LTS) users. Currently, the origin trial is set to expire

on August 7th, 2024, which is 6 weeks after 126 stable starts rolling out
on ChromeOS. However, per Chromium Dash
, M126 will only be released to
ChromeOS LTS users on October 1, 2024, which is 8 weeks after the origin
trial expires. This means ChromeOS LTS users who have installed apps that
use the Tabbed Mode origin trial in M120 will see those apps automatically
revert to standalone (non-tabbed) windows, which may be an experience the
application authors never intended users to see, and have that unintended
experience linger for over 8 weeks.

Therefore, we are taking the unusual step of asking for an extension even
though the API is already shipping. Since ChromeOS LTS begins rolling out
on October 1, we are asking for an extension until 8 weeks after that date,
which is November 26th. This will ensure a majority of LTS users have
upgraded to 126 before the origin trial expires.

We understand that the extension of origin trials is taken seriously to
avoid burn-in risk and also to avoid an incentive to hold back on older
versions of browsers. However, neither of those apply in this case: with
the API already shipping in 126, the burn-in issue is moot. And there is no
incentive to hold back the browser version as the API will be available in
newer versions anyway. Therefore, this is not extending the exposure risk
of the API, it is just ensuring that users who are still on older versions
will have enough time to upgrade before the feature disappears from those
old versions.

Thank you,
Brett

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Re: [blink-dev] Intent to Ship: Tabbed web apps

[Brett Wilson]

To follow up, there's a nice shout out at Google I/O about this feature and
also mentions that Figma is trying it:

https://youtu.be/KFeuEMAaKfM?si=pr71c4hfxhI5RbT0&t=1039

On Sun, May 12, 2024 at 6:08 PM Matt Giuca  wrote:

> Thanks everyone. This is now enabled on ToT in 126.
>
> On Fri, 10 May 2024 at 17:59, TAMURA, Kent  wrote:
>
>> LGTM3.
>>
>>
>> On Fri, May 10, 2024 at 2:41 AM Mike Taylor 
>> wrote:
>>
>>> LGTM2
>>> On 5/9/24 10:48 AM, Chris Harrelson wrote:
>>>
>>> Thanks for these clarifications.
>>>
>>> LGTM1
>>>
>>> On Wed, May 8, 2024 at 6:05 PM Daniel Murphy 
>>> wrote:
>>>
>>>> We don't have an objection to this feature existing - it's actually
>>>> currently in our backlog. But it is very low in our priority list. While we
>>>> can review patches, we will not be able to dedicate resources for
>>>> consultation or maintenance.
>>>>
>>>> On Wed, May 8, 2024 at 9:19 AM Brett Wilson 
>>>> wrote:
>>>>
>>>>> On Wed, May 8, 2024 at 8:39 AM Alex Russell 
>>>>> wrote:
>>>>>
>>>>>> I'm happy for this to be CrOS first, but would like to unpack Brett's
>>>>>> statement above a bit. If we (MSFT) were to polish this up for Windows,
>>>>>> would patches for that be accepted?
>>>>>>
>>>>>
>>>>> I can't speak for the browser team. But my current understanding is
>>>>> that the browser team likes this in principle but doesn't prioritize it
>>>>> high enough to work on it right now (this is a correction from my previous
>>>>> assertion). So I'm pretty sure patches enabling this for other platforms
>>>>> would be accepted.
>>>>>
>>>>> Brett
>>>>> --
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>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CABiGVV-Zeyv3Rez%2BPQ%2B%2BfW4ihpRCwnnGN2HNxOyXTA7_uWehzw%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>> .
>>>>>
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>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CA%2B4qT32O-zoM4tarHQvoHkmYt%2B%3Dc5iOiPdkueMk%2BhUe7mkYU%2BA%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
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>>> .
>>>
>>
>>
>> --
>> TAMURA Kent
>> Software Engineer, Google
>>
>>
>>

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Re: [blink-dev] Intent to Ship: Tabbed web apps

[Brett Wilson]

On Wed, May 8, 2024 at 8:39 AM Alex Russell 
wrote:

> I'm happy for this to be CrOS first, but would like to unpack Brett's
> statement above a bit. If we (MSFT) were to polish this up for Windows,
> would patches for that be accepted?
>

I can't speak for the browser team. But my current understanding is that
the browser team likes this in principle but doesn't prioritize it high
enough to work on it right now (this is a correction from my previous
assertion). So I'm pretty sure patches enabling this for other platforms
would be accepted.

Brett

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Re: [blink-dev] Intent to Ship: Tabbed web apps

[Brett Wilson]

On Mon, May 6, 2024 at 3:02 AM Yoav Weiss (@Shopify) 
wrote:

>
>
> On Fri, May 3, 2024 at 7:28 PM Brett Wilson  wrote:
>
>> Contact emailsbre...@chromium.org, alancut...@chromium.org,
>> mgi...@chromium.org, loubr...@google.com
>>
>> Explainer
>> https://github.com/WICG/manifest-incubations/blob/gh-pages/tabbed-mode-explainer.md
>>
>> Specificationhttps://wicg.github.io/manifest-incubations/#dfn-tabbed
>>
>> Summary
>>
>> Allow web app windows to have a tab strip. This adds a new display mode
>> "tabbed" and a new manifest field to allow customizations to the tab strip.
>>
>>
>> Blink componentBlink>AppManifest
>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EAppManifest>
>>
>> TAG reviewhttps://github.com/w3ctag/design-reviews/issues/841
>>
>> TAG review statusIssues addressed
>>
>> Chromium Trial NameWebAppTabStrip
>>
>> Link to origin trial feedback summary
>> https://github.com/WICG/manifest-incubations/issues
>>
>> Origin Trial documentation link
>> https://github.com/WICG/manifest-incubations/blob/gh-pages/tabbed-mode-explainer.md
>>
>> Risks
>>
>>
>> Interoperability and Compatibility
>>
>>
>>
>> *Gecko*: Defer (https://github.com/mozilla/standards-positions/issues/811
>> )
>>
>> *WebKit*: No signal (
>> https://github.com/WebKit/standards-positions/issues/195)
>>
>> *Web developers*: Positive (https://github.com/w3c/manifest/issues/737)
>>
>> *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?
>>
>> N/A
>>
>>
>> Debuggability
>>
>> chrome://web-app-internals can be used for debugging, and the new
>> manifest field could also be added to the DevTools Application pane.
>>
>>
>> Will this feature be supported on all six Blink platforms (Windows, Mac,
>> Linux, ChromeOS, Android, and Android WebView)?No
>>
>> The origin trial is available on ChromeOS only. Support for other desktop
>> platforms is planned.
>>
>>
>> Is this feature fully tested by web-platform-tests
>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
>> ?Yes
>>
>>
>> https://github.com/web-platform-tests/wpt/tree/master/appmanifest/display-override-member
>>
>>
>> Flag name on chrome://flagschrome://flags/#enable-desktop-pwas-tab-strip
>>
>> Finch feature nameDesktopPWAsTabStrip
>>
>> Requires code in //chrome?True
>>
>> Tracking bughttps://issuetracker.google.com/issues/40598974
>>
>> Launch bughttps://launch.corp.google.com/launch/4253814
>>
>> MeasurementLaunch.WebAppDisplayMode: Tabbed
>>
>> Availability expectationFeature is available only on Chrome-on-ChromeOS
>> for the foreseeable future.
>>
>
> This seems a bit contradictory with "Support for other desktop platforms
> is planned" above. Are there plans for support beyond CrOS?
>
>>
>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CABiGVV9MstA8bLmUTLkkfTjeYK8bb7fkhyKL_OMt_d7UzavRTA%40mail.gmail.com?utm_medium=email&utm_source=footer>
>
>
Sorry, the first part was a mistake. Chrome team has requested this not be
on other platforms now.

Brett

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[blink-dev] Intent to Ship: Tabbed web apps

[Brett Wilson]

Contact emailsbre...@chromium.org, alancut...@chromium.org,
mgi...@chromium.org, loubr...@google.com

Explainer
https://github.com/WICG/manifest-incubations/blob/gh-pages/tabbed-mode-explainer.md

Specificationhttps://wicg.github.io/manifest-incubations/#dfn-tabbed

Summary

Allow web app windows to have a tab strip. This adds a new display mode
"tabbed" and a new manifest field to allow customizations to the tab strip.


Blink componentBlink>AppManifest


TAG reviewhttps://github.com/w3ctag/design-reviews/issues/841

TAG review statusIssues addressed

Chromium Trial NameWebAppTabStrip

Link to origin trial feedback summary
https://github.com/WICG/manifest-incubations/issues

Origin Trial documentation link
https://github.com/WICG/manifest-incubations/blob/gh-pages/tabbed-mode-explainer.md

Risks


Interoperability and Compatibility



*Gecko*: Defer (https://github.com/mozilla/standards-positions/issues/811)

*WebKit*: No signal (
https://github.com/WebKit/standards-positions/issues/195)

*Web developers*: Positive (https://github.com/w3c/manifest/issues/737)

*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?

N/A


Debuggability

chrome://web-app-internals can be used for debugging, and the new manifest
field could also be added to the DevTools Application pane.


Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, ChromeOS, Android, and Android WebView)?No

The origin trial is available on ChromeOS only. Support for other desktop
platforms is planned.


Is this feature fully tested by web-platform-tests

?Yes

https://github.com/web-platform-tests/wpt/tree/master/appmanifest/display-override-member


Flag name on chrome://flagschrome://flags/#enable-desktop-pwas-tab-strip

Finch feature nameDesktopPWAsTabStrip

Requires code in //chrome?True

Tracking bughttps://issuetracker.google.com/issues/40598974

Launch bughttps://launch.corp.google.com/launch/4253814

MeasurementLaunch.WebAppDisplayMode: Tabbed

Availability expectationFeature is available only on Chrome-on-ChromeOS for
the foreseeable future.

Adoption expectationFeature is used by specific partner(s) to provide
functionality within 12 months of launch in Chrome. May be of interest to a
handful of PWA authors primarily in the productivity space.

Adoption planWorking with a small number of partners directly.

Non-OSS dependencies

Does the feature depend on any code or APIs outside the Chromium open
source repository and its open-source dependencies to function?
N/A

Sample links
https://paint-rightful-patch.glitch.me

Estimated milestones
Shipping on desktop 126
Origin trial desktop first 118
Origin trial desktop last 126
Origin trial extension 1 end milestone 126

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).
Chromium implementation currently does not parse string-form URL patterns
as required by the spec. Marked "at risk". (
https://github.com/WICG/manifest-incubations/issues/97)

Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5128143454076928?gate=6176288199409664

Links to previous Intent discussionsIntent to prototype:
https://groups.google.com/a/chromium.org/g/blink-dev/c/IvfIkjvQYuY/m/cixwOyEeAAAJ
Intent
to Experiment:
https://groups.google.com/a/chromium.org/g/blink-dev/c/m16m2TEq-NM/m/0Bc10numCgAJ
Intent to Extend Experiment 1:
https://groups.google.com/a/chromium.org/g/blink-dev/c/5aRDL-E9olQ/m/Pb7ECdcpAAAJ
Intent to Ship:
https://groups.google.com/a/chromium.org/g/blink-dev/c/5aRDL-E9olQ/m/Pb7ECdcpAAAJ


This intent message was generated by Chrome Platform Status
.

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Re: [blink-dev] Intent to Continue Experimenting: Tabbed Web Apps

[Brett Wilson]

On Wed, Apr 10, 2024 at 8:29 AM Alex Russell 
wrote:

> Great to hear there's support for the feature.
>
> 118-126 w/o breaking changes is pushing things. Is it practical to ship
> inside the 123-126 window? How close are we?\
>

Hi Alex,

Sorry for the delay, we've been trying to figure out the timing for this
feature since there are a bunch of moving parts. We're going to try to get
this into M126 (soon) and are working on the finishing touches. Look for
communication in the coming weeks.

The main reason is that M126 is the ChromeOS Long-Term Support ("LTS")
release used by many companies and schools. The date-based origin trials
interact particularly poorly with the LTS releases, and because this
feature is triggered by a manifest, it can't really be feature-detected for
a fallback like you would normally do for a web trial. As a result, the
options are (1) land in M126, (2) extend the origin trial until M126 LTS
ends in 2025, or (3) inflict brokenness on LTS users.

To answer Stefan's questions:

   - I think this would be a nice feature on all platforms as well, but the
   browser team has not shown interest outside of ChromeOS for now.
   - The thinking behind the lack of favicons is that they would normally
   all be the same which is a bit weird.
   - The active/inactive split should be inherited from the general browser
   tab strip behavior. We have promised not to diverge the presentation from
   the default tab strip to keep the maintenance burden on the team lower
   while re-using the browser tab strip code.

Brett


> On Tuesday, April 9, 2024 at 9:07:37 AM UTC-7 Stefan Peter wrote:
>
>> Hi, I think it would help to extend the Open Trial to Windows and Mac as
>> well. We're really like that feature it fits perfectly our strategy and the
>> behaviour of or App (having mutliple remote session to computers active in
>> different tabs)
>>
>> I have only minor problems with it, like that there are no favicons in
>> the tabs or that the visible split between inactive tabs is not so well
>> visible. But otherwise can't wait to have it as a non experimental feature.
>> :)
>>
>> Domenic Denicola schrieb am Mittwoch, 13. März 2024 um 03:45:58 UTC+1:
>>
>>> LGTM to extend. The recent spec progress looks significant, and other
>>> areas are in good shape.
>>>
>>> On Wed, Mar 13, 2024 at 11:36 AM Matt Giuca  wrote:
>>>
>> The original trial was from 118 to 123, inclusive.

 We want to extend it so it continues running from 124 to 126, inclusive.

 On Fri, 8 Mar 2024 at 16:52, Domenic Denicola 
 wrote:

>>> For what milestones do you want to extend the experiment for?
>
> On Thu, Mar 7, 2024 at 3:39 PM Matt Giuca  wrote:
>
>> Contact emailsloub...@google.com, gle...@chromium.org,
>> mgi...@chromium.org, bre...@chromium.org
>>
>
>>
>> Explainer
>> https://github.com/WICG/manifest-incubations/blob/gh-pages/tabbed-mode-explainer.md
>>
>> Specificationhttps://github.com/WICG/manifest-incubations/pull/95
>>  (draft)
>>
>> Summary
>>
>> Allow web app windows to have a tab strip. This adds a new display
>> mode "tabbed" and a new manifest field to allow customizations to the tab
>> strip.
>>
>> Following a 6-milestone origin trial, we would like to continue
>> experimenting as the feature team is not ready to commit to shipping, and
>> gathered very little data from the initial experiment (as partners we 
>> have
>> lined up have not yet started their experiment).
>>
>> Per the Blink policy, we have made substantial progress in these five
>> areas:
>>
>>- Draft spec: https://github.com/WICG/manifest-incubations/pull/95
>>- TAG review: https://github.com/w3ctag/design-reviews/issues/841
>>(closed with "unsatisfied"; I have sent a follow-up comment).
>>- Signals requests:
>>   - WebKit:
>>   https://github.com/WebKit/standards-positions/issues/195
>>   (ignored)
>>   - Mozilla:
>>   https://github.com/mozilla/standards-positions/issues/811
>>   (closed as not interested in any of "these sorts of features")
>>- Outreach for feedback from spec community:
>>https://developer.chrome.com/docs/capabilities/tabbed-application-mode
>>- WPT tests:
>>
>> https://github.com/web-platform-tests/wpt/blob/master/appmanifest/display-override-member/display-override-member-media-feature-tabbed-manual.tentative.html
>>
>> Blink componentBlink>AppManifest
>> 
>>
>> TAG reviewhttps://github.com/w3ctag/design-reviews/issues/841
>>
>> TAG review statusClosed ("Unsatisfied")
>>
>> Chromium Trial NameWebAppTabStrip
>>
>> Origin trial feedback summary
>> Only a small number of signups, most look like individuals wanting to
>> experiment. A handful of smal