e10s: Broken/missing accessibility subtree for pages with an iframe

RESOLVED FIXED in Firefox 44

Status

()

RESOLVED FIXED
3 years ago
2 years ago

People

(Reporter: jdiggs, Assigned: tbsaunde)

Tracking

(Blocks: 1 bug)

unspecified
mozilla44
Unspecified
Linux
Points:
---
Dependency tree / graph

Firefox Tracking Flags

(firefox44 fixed)

Details

Attachments

(1 attachment)

(Reporter)

Description

3 years ago
Steps to reproduce:
1. Launch Firefox with e10s enabled
2. Load: data:text/html,<iframe src="http://firefox.com"></iframe>
3. Launch Accerciser and drill down to the accessible associated with the iframe

Expected results: The accessible iframe would have a full subtree of descendant elements.

Actual results: The accessible iframe has a single descendant whose name displayed by Accerciser is "<dead>". If you use Accerciser's iPython console to get the childcount of the iframe, the return value is 1. But if you then ask for that child in the iPython console, the return value is None.

Impact: iframe content is not accessible when e10s is enabled.

Comment 1

3 years ago
Interestingly, this works as expected on Windows.
(Assignee)

Comment 2

3 years ago
Created attachment 8668959 [details] [diff] [review]
fix ProxyAccessible::EmbeddedChildAt() on proxies of outerDocs
Attachment #8668959 - Flags: review?(dbolter)
Comment on attachment 8668959 [details] [diff] [review]
fix ProxyAccessible::EmbeddedChildAt() on proxies of outerDocs

Review of attachment 8668959 [details] [diff] [review]:
-----------------------------------------------------------------

::: accessible/ipc/ProxyAccessible.cpp
@@ +1011,2 @@
>    uint64_t childID;
>    unused << mDoc->SendEmbeddedChildAt(mID, aChildIdx, &childID);

Unrelated to this bug: need to figure out caching this eventually.
Attachment #8668959 - Flags: review?(dbolter) → review+
https://hg.mozilla.org/mozilla-central/rev/196199146b8e
Status: NEW → RESOLVED
Last Resolved: 3 years ago
status-firefox44: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla44
Assignee: nobody → tbsaunde+mozbugs
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