(non-owner hat on) - Thanks for flagging, Domenic. We'll re-ping the
thread once we decide if we should rename it, and to what.
On 2/28/24 9:43 PM, Domenic Denicola wrote:
I've raised a potentially-breaking spec issue which I'd like to get a
conclusion on before LGTMing this:
https://github.com/WICG/ua-client-hints/issues/355
On Thursday, February 29, 2024 at 2:03:07 AM UTC+9 Yoav Weiss wrote:
LGTM2
On Wed, Feb 21, 2024 at 6:04 PM Vladimir Levin
<[email protected]> wrote:
On Wed, Feb 21, 2024 at 11:25 AM Dustin Mitchell
<[email protected]> wrote:
Thanks for the comments!
On Tue, Feb 20, 2024 at 11:10 AM Vladimir Levin
<[email protected]> wrote:
On Tue, Feb 20, 2024 at 7:06 AM 'Dustin Mitchell' via
blink-dev <[email protected]> wrote:
Contact emails
[email protected]
Explainer
https://github.com/djmitche/web-explainers/blob/main/sec-ch-ua-form-factor.md
<https://github.com/djmitche/web-explainers/blob/main/sec-ch-ua-form-factor.md>
Specification
https://wicg.github.io/ua-client-hints/#sec-ch-ua-form-factor
<https://wicg.github.io/ua-client-hints/#sec-ch-ua-form-factor>
Design docs
https://github.com/djmitche/web-explainers/blob/main/sec-ch-ua-form-factor.md
<https://github.com/djmitche/web-explainers/blob/main/sec-ch-ua-form-factor.md>
Summary
This hint indicates the "form-factor" of the
user-agent / device, so that the site can tailor
its response.
Blink component
Blink>Network
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ENetwork>
Search tags
ua-ch
<https://chromestatus.com/features#tags:ua-ch>,
uach
<https://chromestatus.com/features#tags:uach>,
form-factor
<https://chromestatus.com/features#tags:form-factor>
TAG review
This feature simply adds a new hint to the
existing set of hints, containing data that was
previously represented in the user-agent string.
Although this info may be available, I suspect this
can be a new channel of information for clients that
override the user-agent string or where this
information isn't provided in the user-agent string. I
don't believe this to be a problem, but just something
to consider
That's a good point, and likely needs to be considered for
all client hints. Do you think it's worth adding an issue
in https://github.com/WICG/ua-client-hints
<https://github.com/WICG/ua-client-hints> to track this?
I don't feel particularly strongly about this, but raising the
issue to invite more opinions seems worthwhile.
TAG review status
Not applicable
Risks
Interoperability and Compatibility
If other browsers do not implement this hint, then
the information will only be available in Chrome,
and other browsers will implicitly return an empty
value.
/Gecko/: No signal
/WebKit/: No signal
Can you please file requests for positions for both
Gecko and WebKit?
Gecko:
https://mozilla.github.io/standards-positions/#ua-client-hints
<https://mozilla.github.io/standards-positions/#ua-client-hints>
Webkit:
https://lists.webkit.org/pipermail/webkit-dev/2024-February/032618.html
<https://lists.webkit.org/pipermail/webkit-dev/2024-February/032618.html>
Thank you for doing this. For posterity in the future, for
WebKit, it might be better to file an issue here:
https://github.com/WebKit/standards-positions/issues
<https://github.com/WebKit/standards-positions/issues>
/Web developers/: No signals
/Other signals/:
Ergonomics
None - this fits with existing, similar client hints.
Activation
No activation risks - developers will always need
to handle the situation where this hint is
unavailable.
Security
None
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 change to existing behavior; this adds a new
hint which sites must opt in to. Killswitch is
available: ClientHintsFormFactor
Debuggability
No changes in the checklist apply.
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
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
Yes
Included in existing tests for other client hints:
https://wpt.fyi/results/html/webappapis/system-state-and-capabilities/the-navigator-object/navigator_user_agent.https.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/html/webappapis/system-state-and-capabilities/the-navigator-object/navigator_user_agent.https.html?label=experimental&label=master&aligned>
https://wpt.fyi/results/workers/WorkerNavigator_userAgentData.https.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/workers/WorkerNavigator_userAgentData.https.html?label=experimental&label=master&aligned>
DevTrial instructions
https://github.com/djmitche/web-explainers/blob/main/sec-ch-ua-form-factor-howto.md
<https://github.com/djmitche/web-explainers/blob/main/sec-ch-ua-form-factor-howto.md>
Flag name on chrome://flags
None
Finch feature name
ClientHintsFormFactor
Requires code in //chrome?
True
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1442283
<https://bugs.chromium.org/p/chromium/issues/detail?id=1442283>
Launch bug
https://launch.corp.google.com/launch/4258684
<https://launch.corp.google.com/launch/4258684>
Measurement
None
Availability expectation
Feature is available only in Chromium browsers for
the foreseeable future.
Adoption expectation
Feature is used by specific partner(s) to provide
functionality within 12 months of launch in Chrome.
Adoption plan
New form-factors will add additional strings to
this hint, within the values given in the draft
spec. The ClientHintsXRFormFactor gates one such
addition.
Estimated milestones
Shipping on desktop 123
DevTrial on desktop 122
Shipping on Android 123
DevTrial on Android 122
Shipping on WebView 123
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).
No open issues
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5162545698045952
<https://chromestatus.com/feature/5162545698045952>
Links to previous Intent discussions
Intent to prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CALMtyTTPUMfjo2v9s%3DKMALpS5MUcicvpM2ycNtz6GbRZ9JOaXQ%40mail.gmail.com
<https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CALMtyTTPUMfjo2v9s%3DKMALpS5MUcicvpM2ycNtz6GbRZ9JOaXQ%40mail.gmail.com>
This intent message was generated by Chrome
Platform Status <https://chromestatus.com/>.
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