Bug 117456 – Fix issue where iframe content wasn't included in the accessibility tree

• Component: Accessibility
• Status: RESOLVED FIXED

[Ryosuke Niwa]

Consider merging https://chromium.googlesource.com/chromium/blink/+/af4e73e2bfb32fce56854ef0dab33077c7fa6bff

Have RenderWidget notify the accessibility object when its widget changes,
otherwise the AccessibilityRenderObject for the iframe might have a stale
reference to the previous widget. (This wouldn't crash, it'd just result in
an empty subtree until some other event triggered it to update.)

Also, remove a check that made isAttachment return false if an iframe
element had an ARIA role. I don't believe an ARIA role on an iframe should
ever have the effect of hiding its contents - it's unlikely that's what the web
author wanted, and if the web author really wants that they can use
aria-hidden.

This allows us to re-enable this test, that was previously
failing flakily because of this bug: loading-iframe-updates-axtree.html

[chris fleizach]

The RenderWidget.cpp change in this diffset we should take, but I am not convinced about the other one (where ariaRole=Unknown is removed).. if someone sets a role on the <iframe> i'm not convinced we still always want to expose it... i'm sure that would break some existing mac test. however, the behavior there may need to be more refined

[chris fleizach]

Created attachment 204275 [details]
patch

[Ryosuke Niwa]

Thanks for the merge!

[Build Bot]

Comment on attachment 204275 [details]
patch

Attachment 204275 [details] did not pass mac-ews (mac):
Output: http://webkit-queues.appspot.com/results/799099

New failing tests:
editing/selection/selection-plugin-clear-crash.html
plugins/destroy-during-npp-new-object-with-fallback-content.html
plugins/destroy-during-npp-new.html

[Build Bot]

Created attachment 204283 [details]
Archive of layout-test-results from webkit-ews-05 for mac-mountainlion

The attached test failures were seen while running run-webkit-tests on the mac-ews.
Bot: webkit-ews-05  Port: mac-mountainlion  Platform: Mac OS X 10.8.3

[Build Bot]

Comment on attachment 204275 [details]
patch

Attachment 204275 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.appspot.com/results/852238

New failing tests:
editing/selection/selection-plugin-clear-crash.html
plugins/update-widgets-crash.html
plugins/destroy-during-npp-new.html
plugins/destroy-during-npp-new-object-with-fallback-content.html

[Build Bot]

Created attachment 204655 [details]
Archive of layout-test-results from webkit-ews-12 for mac-mountainlion-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: webkit-ews-12  Port: mac-mountainlion-wk2  Platform: Mac OS X 10.8.3

[chris fleizach]

Created attachment 204656 [details]
patch

A patch that doesn't crash (I think)

[Build Bot]

Comment on attachment 204656 [details]
patch

Attachment 204656 [details] did not pass mac-ews (mac):
Output: http://webkit-queues.appspot.com/results/851219

New failing tests:
editing/selection/selection-plugin-clear-crash.html
plugins/destroy-during-npp-new-object-with-fallback-content.html
plugins/destroy-during-npp-new.html
fast/repaint/table-cell-collapsed-border-scroll.html

[Build Bot]

Created attachment 204665 [details]
Archive of layout-test-results from webkit-ews-01 for mac-mountainlion

The attached test failures were seen while running run-webkit-tests on the mac-ews.
Bot: webkit-ews-01  Port: mac-mountainlion  Platform: Mac OS X 10.8.3

[Build Bot]

Comment on attachment 204656 [details]
patch

Attachment 204656 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.appspot.com/results/887094

New failing tests:
editing/selection/selection-plugin-clear-crash.html
plugins/destroy-during-npp-new-object-with-fallback-content.html
plugins/destroy-during-npp-new.html
plugins/update-widgets-crash.html

[Build Bot]

Created attachment 205112 [details]
Archive of layout-test-results from webkit-ews-11 for mac-mountainlion-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: webkit-ews-11  Port: mac-mountainlion-wk2  Platform: Mac OS X 10.8.3

[Radar WebKit Bug Importer]

<rdar://problem/16014097>

[Csaba Osztrogonác]

Comment on attachment 204275 [details]
patch

Cleared Ryosuke Niwa's review+ from obsolete attachment 204275 [details] so that this bug does not appear in http://webkit.org/pending-commit.

[EWS]

Committed 255407@main (0efc0bf9f325): <https://commits.webkit.org/255407@main>

Reviewed commits have been landed. Closing PR #5003 and removing active labels.