[csswg-drafts] [css-contain] Should scrollIntoView scroll to content-visibility: hidden subtree elements (#6529)

vmpstr has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-contain] Should scrollIntoView scroll to content-visibility: hidden subtree elements ==
[content-visibility: hidden](https://www.w3.org/TR/css-contain-2/#content-visibility) property skips its contents and notably says that they shouldn't be available to user agent features like find-in-page nor should they be focusable and selectable. 

It also says that if the layout work is done, then the user-agent should retain as much of that state as possible in order to make revealing the contents faster.

[scrollIntoView()](https://drafts.csswg.org/cssom-view/#dom-element-scrollintoview) says (in step 6) that as long as the element has a layout object, we scroll it into view.

The problem is that for content-visibility: hidden contents, we _may_ have a layout object or we may not, depending on whether rendering work as ever been done in that subtree. This means that the behavior of scrollIntoView is inconsistent.

I propose that we call out scrollIntoView explicitly in content-visibility section under hidden and say that calling scrollIntoView on content-visibility: hidden subtrees has no effect (or something similar)

/cc @tabatkins @frivoal 

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/6529 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Thursday, 19 August 2021 19:47:36 UTC