[Webkit-unassigned] [Bug 178515] New: How to reach full interoperability on default scrolling behavior for HTMLElement focus()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=178515

            Bug ID: 178515
           Summary: How to reach full interoperability on default
                    scrolling behavior for HTMLElement focus()
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: zcorpan at gmail.com
                CC: cdumez at apple.com

Context is: https://github.com/w3c/csswg-drafts/pull/1805#issuecomment-337801758

> Ask browser vendors to consider if they want to get full interoperability on default scrolling behavior for focus(), and if so what the behavior should be. I can file issues.

The current situation is summarized in https://github.com/w3c/csswg-drafts/pull/1805#issuecomment-331383688 and repeated below.

Chrome, Opera, Safari behave as follows.
Entirely in view: No scrolling
Partially in view: Scrolling (block: nearest, inline: nearest)
Entirely out of view: Scrolling (block: center, inline: center)

Firefox, Edge behave as follows.
Entirely in view: No scrolling
Partially in view: No scrolling
Entirely out of view: Scrolling (block: nearest, inline: nearest)

Getting agreement between browsers here would give us a stable foundation to extend the focus() API with scrollOptions (or something) that can explain the default scrolling behavior and allow customizing alignment etc. It also makes the web platform more predictable for developers.

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