Intent to Prototype: overscroll-behavior: chain

[Chromestatus]

Contact emails

vmp...@google.com

Explainer

No information provided

Specification

No information provided

Summary

overscroll-behavior currently has 3 values: none, auto, and contain. These values affect 2 independent effects: scroll propagation and local border effect (e.g. overscroll stretch). none: no propagation, no local effect auto: propagation, local effect contain: no propagation, local effect This feature tracks a new value to complete the set: chain: propagation, no local effect This is useful for effects like side menus implemented as scrollers. We want to bring the menu in and when it hits the edge it doesn't overscroll (stretch/translate). However, it would then allow scroll chaining to the ancestor. Initial proposal: https://github.com/w3c/csswg-drafts/issues/13370

Blink component

Blink>Scroll

Web Feature ID

overscroll-behavior

Motivation

This feature is useful for effects like side menus implemented as scrollers. We want to bring the menu in and when it hits the edge it doesn't overscroll (stretch/translate). However, it would then allow scroll chaining to the ancestor. There may be other effects that want to prevent overscroll effects but allow chaning

Initial public proposal

https://github.com/w3c/csswg-drafts/issues/13370

Goals for experimentation

None

Requires code in //chrome?

False

Estimated milestones

No milestones specified

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5176802466201600?gate=4793180349399040

This intent message was generated by Chrome Platform Status.