1629162 - Fire FOCUSABLE state change events

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect, P3)

Description

[Eitan Isaacson [:eeejay]]

Focusable state change notifications would be useful both for state caching, and to allow audits to be corrected real time (see bug 1596017).

A possible casualty of that may be IDed elements that are descendants of aria-activedescendant containers having a FOCUSABLE state. While possible this can make focusable state change events very noisy.

An alternative i to have only the currently set item in aria-activedescendant have a FOCUSABLE state. In fact that is probably more correct in the sense that the active descendant inherits focus from its widget.

Comment 1

[Eitan Isaacson [:eeejay]]

Attachment: Bug 1629162 - Attribute changes should cause FOCUSABLE state change events. r?morgan,Jamie

Changes to attributes such as disabled, contenteditable, and tabindex should cause FOCUSABLE
state changes to be fired when indeed the accessible gains or loses focusability.

Comment 2

[Eitan Isaacson [:eeejay]]

Attachment: Bug 1629162 - Scrollability changed should fire accessible FOCUSABLE changes. r?morgan,Jamie

When an element with overflow:auto becomes scrollable, either by a style change or growing children, it should become focusable and fire a state change. Same in the inverse.

Depends on D70560

Comment 3

[Eitan Isaacson [:eeejay]]

Attachment: Bug 1629162 - aria-activedescendant targets should fire FOCUSABLE state changes. r?morgan,Jamie

When an accessible becomes an active descendant it should gain the FOCUSABLE state, and lose it when it stops being an active descendant.

In addition, not all accessibles with DOM node IDs that are descendants of aria-activedescendant should be FOCUSABLE.

Depends on D70561

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a7fd4af750ca
Attribute changes should cause FOCUSABLE state change events. r=morgan,Jamie
https://hg.mozilla.org/integration/autoland/rev/48de14388873
Scrollability changed should fire accessible FOCUSABLE changes. r=morgan,Jamie

Comment 5

[Cristian Brindusan [:cbrindusan]]

https://hg.mozilla.org/mozilla-central/rev/a7fd4af750ca
https://hg.mozilla.org/mozilla-central/rev/48de14388873