Intent to Ship: visualViewport.onscrollend Support
David Awogbemila
Contact emails
awogb...@google.comExplainer
NoneSpecification
https://drafts.csswg.org/cssom-view/#the-visualviewport-interfaceSummary
Scrollend is a JavaScript event that fires to signal that a scrolling operation has come to an end. Similar to the Element interface[1], the visualViewport interface[2] includes an onscrollend event handler that should be invoked when a scrolling operation on the visualViewport has ended. Chromium already supports adding a scrollend event listener via `visualViewport.addEventListener("scrollend")`. This just makes it possible to also add an event listener using `visualViewport.onscrollend`. [1]https://html.spec.whatwg.org/multipage/webappapis.html#handler-onscrollend [2]https://drafts.csswg.org/cssom-view/#dom-visualviewport-onscrollend.
Blink component
Blink>ScrollTAG review
NoneTAG review status
Not applicableRisks
Interoperability and Compatibility
None
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
This makes it possible to add breakpoints to event handlers added by `visualViewport.onscrollend` similar to `visualViewport.onscroll` or onscrollend for any other element.
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?
YesIs this feature fully tested by web-platform-tests?
YesFlag name on chrome://flags
NoneFinch feature name
ScrollEndEventsRequires code in //chrome?
FalseTracking bug
https://crbug.com/325307785Estimated milestones
| Shipping on desktop | 125 |
| Shipping on Android | 125 |
| Shipping on WebView | 125 |
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).
NoneLink to entry on the Chrome Platform Status
https://chromestatus.com/feature/5774579609108480?gate=4770235262697472
Domenic Denicola
Yoav Weiss (@Shopify)
LGTM1, this is a very small change that IMO does not require any signals or TAG review. It's just bringing this event in line with all other events on the platform.(It would be cool if there were some automated way of preventing this kind of omission in the future.)
On Wednesday, March 27, 2024 at 9:49:16 AM UTC+9 David Awogbemila wrote:
Contact emailsawogb...@google.com
ExplainerNone
Specificationhttps://drafts.csswg.org/cssom-view/#the-visualviewport-interface
SummaryScrollend is a JavaScript event that fires to signal that a scrolling operation has come to an end. Similar to the Element interface[1], the visualViewport interface[2] includes an onscrollend event handler that should be invoked when a scrolling operation on the visualViewport has ended. Chromium already supports adding a scrollend event listener via `visualViewport.addEventListener("scrollend")`. This just makes it possible to also add an event listener using `visualViewport.onscrollend`. [1]https://html.spec.whatwg.org/multipage/webappapis.html#handler-onscrollend [2]https://drafts.csswg.org/cssom-view/#dom-visualviewport-onscrollend.
Blink componentBlink>Scroll
TAG reviewNone
TAG review statusNot applicable
Risks
Interoperability and CompatibilityNone
Gecko: No signal
WebKit: No signal
Web developers: No signals
Other signals:
WebView application risksDoes this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?
None
DebuggabilityThis makes it possible to add breakpoints to event handlers added by `visualViewport.onscrollend` similar to `visualViewport.onscroll` or onscrollend for any other element.
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?Yes
Flag name on chrome://flagsNone
Finch feature nameScrollEndEvents
Requires code in //chrome?False
Tracking bughttps://crbug.com/325307785
Estimated milestonesShipping on desktop125Shipping on Android125Shipping on WebView125
Anticipated spec changesOpen 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 Statushttps://chromestatus.com/feature/5774579609108480?gate=4770235262697472
Mike Taylor
LGTM2
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Yoav Weiss (@Shopify)
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