On Wed, Jul 17, 2024 at 11:51 PM Yoav Weiss (@Shopify)
<yoavwe...@chromium.org> wrote:
Have you had a chance to investigate what a breakage
looks like by checking the sites using the feature?
More specifically, as discussed previously, this usage is
coming from a 3P app that merchant sites install and that
Shopify has no direct control over. Have you reached out to
the app's authors? Have you tried to see if it gets broken by
this change?
So I've been successful in getting in touch with this 3P app
author, and they've already disabled their usage of anchor
positioning generally. So that specific case should be handled.
Generally, the behavior that will be broken by the rename is that
fallback positions will not be attempted, meaning only the
primary anchor position will be used.
I think this rename is fairly safe, but I want to make
sure that we're planning on shipping it with a flag that
would be able to undo the behavior (a killswitch). I
assume having two flags, one to add a new flag and one to
remove the old flag is the easiest way to do that. WDYT?
Thanks, I'm glad you agree that this should be relatively safe,
if done *soon* before usage increases. And to confirm, we do have
two flags (CSSPositionTryFallbacks and CSSPositionTryOptions)
which work exactly as you suggest. We will flip flop their
states, but retain the ability to swap that back via Finch in
case of emergency.
Thanks,
Mason
Thanks,
Vlad
/Gecko/: No signal
/WebKit/: No signal
/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?
None
Debuggability
None
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
https://wpt.fyi/results/css/css-anchor-position
Flag name on chrome://flags
None
Finch feature name
None
Non-finch justification
None
Requires code in //chrome?
False
Tracking bug
https://crbug.com/349600667
Estimated milestones
Shipping on desktop 128
DevTrial on desktop 128
Shipping on Android 128
DevTrial on Android 128
Shipping on WebView 128
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 Status
https://chromestatus.com/feature/5090673808900096?gate=5938066895405056
This intent message was generated by Chrome Platform
Status <https://chromestatus.com/>.
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