LGTM1

On Mon, Jul 18, 2022 at 5:06 PM Nate Chapin <[email protected]> wrote:

> Contact emails
>
> [email protected], [email protected]
>
> Explainer
>
> None
>
> Specification
>
> https://github.com/WICG/navigation-api/pull/23
> <https://github.com/WICG/navigation-api/pull/235>9
>
> Summary
>
> restoreScroll() is being replaced by navigateEvent.scroll(). scroll()
> works identically except that it allows the developer to control scroll
> timing for non-traverse navigations (i.e., scroll() works when the scroll
> is not a restore, hence the name change along with the behavior change).
>
>
> Blink component
>
> Blink>History
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EHistory>
>
> Motivation
>
> We want to support developer-controlled timing of a navigation-associated
> scroll in non-traverse cases (e.g., scrolling to a fragment). It makes
> sense to have the same method drive navigation-related scrolling in both
> traverse and non-traverse cases, but the name "restoreScroll" is nonsense
> for push/replace navigations.
>
>
> Initial public proposal
>
> https://github.com/WICG/navigation-api/pull/23
> <https://github.com/WICG/navigation-api/pull/235>9
>
> TAG review
>
> https://github.com/w3ctag/design-reviews/issues/717
>
> TAG review status
>
> Issues open
>
> Risks
>
> Interoperability and Compatibility
>
> scroll(), which we plan to ship in the same milestone as this deprecation,
> is in development and works identically in all cases that restoreScroll()
> can be used.
>
> Also, restoreScroll() only recently shipped (M102). There are few
> consumers of the API, and we are in contact with most of them already, so
> we believe we can guide them on any migration challenges they might have.
>
> The overall use counter for the navigation API (
> https://chromestatus.com/metrics/feature/timeline/popularity/4056) shows
> 0.000301% of pages on the web using any portion of the API, which provides
> an upper bound on the potential breakage here. (That use counter also
> counts various other entry points to the API, which are not being changed.)
>
> We plan to support both scroll() and restoreScroll() for 3 releases to
> provide a migration period (adding scroll() in M105, removing
> restoreScroll() in M108).
>
> We are bundling this change with a similar migration from
> navigateEvent.transitionWhile() to navigateEvent.intercept() on the same
> timeline to minimize the developer pain.
>
>
> Gecko: No signal https://github.com/mozilla/standards-positions/issues/543
> remains open as the positions request for the original API.
>
> WebKit: No signal
> https://www.mail-archive.com/[email protected]/msg30257.html
> remains open as the positions request for the original API.
> https://github.com/WebKit/standards-positions/issues/34 was recently
> opened by web developers and also remains open.
>
> Web developers: Positive https://github.com/WICG/navigation-api/issues/237
> came out of discussions with web developers.
>
> 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?
> The deprecation risk here is not especially high for WebView applications.
>
>
> Debuggability
>
> N/A
>
>
> Is this feature fully tested by web-platform-tests
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
> ?
>
> Official web platform tests support will switch over to scroll() when it
> lands. We will retain restoreScroll() tests in wpt_internal/navigation-api/
> until restoreScroll() is removed.
>
> Requires code in //chrome?
>
> False
>
> Tracking bug
>
> https://bugs.chromium.org/p/chromium/issues/detail?id=1345507
>
> Estimated milestones
>
> Deprecate: M105. Remove: M108.
>
>
> Link to entry on the Chrome Platform Status
>
> https://chromestatus.com/feature/5029730789621760
>
> This intent message was generated by Chrome Platform Status
> <https://chromestatus.com/>.
>
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>

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