Bug 218309

Summary:

AX: aria-selected state not announced for ARIA treeitem instances

Product:

WebKit

Reporter:

Todd Kloots <todd.kloots>

Component:

Accessibility

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

bfulgham, spanage, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Safari 14

Hardware:

Mac

OS:

macOS 10.15

Attachments:

Description	Flags
Screen recording navigating an ARIA tree using VoiceOver with Safari	none
Screen shot of the ARIA tree example with the Accessibility Inspector	none
Select state not updating	none

Description Todd Kloots 2020-10-28 15:44:18 PDT

Created attachment 412578 [details]
Screen recording navigating an ARIA tree using VoiceOver with Safari

Steps to reproduce:

1. Start VoiceOver
2. Go to https://codepen.io/toddlr/pen/XWrGrGV
3. Move focus to the ARIA tree example
4. Notice VoiceOver does not announce the aria-selected state for the selected ARIA treeitem


What is the expected result?
VoiceOver should announce the aria-selected state for the ARIA treeitem

What happens instead of that?
VoiceOver does not announce the aria-selected state for the ARIA treeitem

Comment 1 Radar WebKit Bug Importer 2020-10-28 15:44:33 PDT

<rdar://problem/70783545>

Comment 2 Todd Kloots 2020-10-28 16:06:57 PDT

Created attachment 412584 [details]
Screen shot of the ARIA tree example with the Accessibility Inspector

I believe this could be a bug in VoiceOver. When examining the selected ARIA treeitem instance in the Accessibility Inspector, the inspector shows it as selected.

Comment 3 Todd Kloots 2021-07-28 10:26:27 PDT

As of Mac OS 11.4 aria-selected is announced by VoiceOver BUT only if interacting using VO- navigation. If you navigate using only arrow keys WITH VO- modifiers aria-selected is not announced.

Comment 4 Brent Fulgham 2022-02-10 19:31:40 PST

The fix for this issue was needed outside the WebKit project, therefore this is being resolved as 'Moved'.

This should now be fixed in shipping software.

Comment 5 Sommer Panage 2022-11-15 15:58:10 PST

Seeing different but problematic behavior in 13.1 Beta (22C5044e), see attached video. When cell selection changes, VO continues to announce the previously selected cell as selected. This is a regression from the progress made in Monterey (12.6.1).

Comment 6 Sommer Panage 2022-11-15 17:21:43 PST

Created attachment 463547 [details]
Select state not updating

Comment 7 Todd Kloots 2023-11-30 15:42:13 PST

Verified this as fixed. The root cause was the repro example (https://codepen.io/toddlr/pen/XWrGrGV) didn't implement aria-selected per the spec (https://www.w3.org/TR/wai-aria-1.2/#aria-selected). 

Specifically, per the spec: "Single-selection containers where the currently focused item is not selected. The selection normally follows the focus, and is managed by the user agent."

So, if an ARIA tree uses aria-selected in a single-selection mode it needs to explicitly declare all unselected treeitems using aria-selected=false else VoiceOver will (per the spec) assume focus and selection are in sync.