402600 - Firefox should take children into account when setting MSAA invisible state on elements with size 0x0

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[Simon Bates]

Firefox sets the MSAA invisible state on elements with computed width and height of 0x0 even if they have visible children. For example a div with only absolutely positioned children will have a size of 0x0 even though its children are visible.

To reproduce:

1. start the Microsoft Inspect tool
1. open the attached invisible_slider.html
1. tab to the #container div (box will turn blue)

Expect: Inspect not to report State: invisible

Actual: Inspect reports State: invisible

Comment 1

[Simon Bates]

Attachment: invisible_slider.html

Comment 2

[Aaron Leventhal]

Attachment: Don't consider a 0x0 object invisible if it's absolutely positioned. I don't think it's worth the extra calculation to see if any descendants have bounds