896326 - Accessibility may return empty lines where there are embedded objects

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[James Teh [:Jamie]]

Str:
1. Use the following code:
<div>a <a href="#">b</a> c</div>
2. Retrieve the accessible for the div.
3. Fetch the line at offset 0; e.g. call IAccessibleText::lineAtOffset(0, IA2_TEXT_BOUNDARY_LINE).
Expected: The offsets returned should be (0, 5).
Actual: The offsets returned are (0, 0).

I believe this is a fairly recent regression (in the last few weeks).

Comment 1

[alexander :surkov (:asurkov)]

(In reply to James Teh [:Jamie] from comment #0)
> Str:
> 1. Use the following code:
> <div>a <a href="#">b</a> c</div>

do I understand correct that it must be at the end of document? When I tried to put something after it then it worked.

Comment 2

[James Teh [:Jamie]]

Interesting. If I put something after it, it works correctly as you say. However, it fails in the tweet composer on twitter.com (where I originally discovered this) which isn't right at the end of the document. I don't have a clue how to isolate that behaviour.

Comment 3

[alexander :surkov (:asurkov)]

Attachment: patch

Comment 4

[alexander :surkov (:asurkov)]

https://hg.mozilla.org/integration/mozilla-inbound/rev/0f8523d1dfe9

Comment 5

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/0f8523d1dfe9