Removing an Accessible removes descendants in the a11y tree.
However, there may be DOM descendants which have been relocated elsewhere in the a11y tree.
Their DOM nodes are now hidden as well, so we need to remove those Accessibles too.
In addition to Accessibles remaining in the tree when they shouldn't, failing to remove relocated Accessibles caused problems later on when a relocated Accessible was shown with new descendants.
Differential Revision: https://phabricator.services.mozilla.com/D41178
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extra : moz-landing-system : lando
We need to visit the descendants of a container that has no accessible,
but has accessible children.
Also added a test for delayed removal where we can put all these nasty
cases.
Differential Revision: https://phabricator.services.mozilla.com/D41059
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extra : moz-landing-system : lando
For accessibility, the address bar is now exposed as a parent combo box which contains the input and the results list.
The combo box role on urlbarView-body-inner is no longer needed and has therefore been removed.
This means screen readers no longer report an extraneous combo box whenever the results list is opened.
Differential Revision: https://phabricator.services.mozilla.com/D40917
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extra : moz-landing-system : lando
The current test doesn't actually do anything because divs with IDs are
always created.
Differential Revision: https://phabricator.services.mozilla.com/D40674
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extra : moz-landing-system : lando
Previously, if a hidden, aria-owned subtree was shown and aria-activedescendant was simultaneously targeted inside it, aria-activedescendant would fail.
This occurred because when we processed insertions, the presence of aria-owns meant we didn't create the subtree.
This meant that when we processed aria-activedescendant (which occurred before relocations), the active descendant didn't exist yet.
To fix this, we now process generic notifications (including aria-activedescendant) *after* relocations.
Differential Revision: https://phabricator.services.mozilla.com/D40579
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extra : moz-landing-system : lando
Converts accessibility.AOM.enabled to static pref and removes the related mirror variable and static flag used to initially generate the varcache pref
Differential Revision: https://phabricator.services.mozilla.com/D40101
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extra : moz-landing-system : lando
Also reworked test_recreation.html to test/demo how these ergonomics
would work.
Differential Revision: https://phabricator.services.mozilla.com/D40124
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rename : accessible/tests/browser/events.js => accessible/tests/mochitest/promisified-events.js
extra : moz-landing-system : lando
We naively remove and then recreate accessibles when their content's
frame is reconstructed. By delaying the removal until we are certain the
content does not have a new layout frame, we can cut down on redundant
recreations.
When reconstructed content is re-inserted we can check it and its
subtree for missing frames and prune those accessibles from the tree.
Differential Revision: https://phabricator.services.mozilla.com/D38380
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extra : moz-landing-system : lando
This is the first step in making it possible to return remote WindowProxy
objects from window.open() and related APIs.
This patch also incidentally fixes a bug where getContentWindowOrOpenURI
returned the top-level browser window rather than the new content window when
passed OPEN_NEWWINDOW for the `aWhere` parameter. This was not the expected
behavior, and was a potentially major footgun for any new users who expected
to always get the content window for the URL they were loading, rather than
sometimes getting a chrome browser window instead.
For now, that case just returns null, which is only a minor footgun, rather
than the major one we had before.
Differential Revision: https://phabricator.services.mozilla.com/D35688
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extra : moz-landing-system : lando
Editor creates a `<br>` element when it's root element is empty.
Then, it's stored by `TextEditRules::mBogusNode` and used for checking
whether the editor is empty quickly. However, this `<br>` element has
`mozeditorbogusnode` attribute whose value is `true`. However, adding or
removing the attribute is not cheap and web apps can refer such illegal
attribute.
Therefore, this patch makes `HTMLBRElement` take a specific flag whether
it's a bogus node or not. However, this means that this hacky thing will be
exposed outside editor module. For making what is the bogus node clearer,
this patch calls the such `<br>` elements as "padding `<br>` element for
empty editor". So, this patch also includes a lot of renaming methods and
variables, and modifying related comments.
Differential Revision: https://phabricator.services.mozilla.com/D39857
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extra : moz-landing-system : lando
Normally, the OuterDocAccessible is created first and the DocAccessibleParent for a remote document is created after that.
So, we get the OuterDocAccessible and call DocAccessibleParent::SendParentCOMProxy when the DocAccessibleParent is constructed (BrowserParent::RecvPDocAccessibleConstructor).
However, sometimes, the OuterDocAccessible is created *after* the DocAccessibleParent.
This sometimes happens for extension popups, for example.
In that case, we previously never sent the parent COM proxy.
Aside from leaving the remote document with a null parent, this also meant we never sent any events for the document, since events are buffered for remote documents until the parent COM proxy is received.
This effectively left the remote document (e.g. extension popup) inaccessible.
Now, we also call SendParentCOMProxy in the OuterDocAccessible constructor.
Note that this doesn't result in duplicates because if the OuterDocAccessible was created first, there won't be a DocAccessibleParent for the remote document yet, so this code won't run.
That said, if the OuterDocAccessible is recreated (e.g. due to frame reconstruction), we may call SendParentCOMProxy again.
This should be okay, but it required an assertion in DocAccessibleChild::RecvParentCOMProxy to be tweaked.
Differential Revision: https://phabricator.services.mozilla.com/D40358
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extra : moz-landing-system : lando
Previously, we expected that we'd always be able to get the COM proxy for the parent (outer doc), so we crashed if it was null.
For an out-of-process iframe, this sometimes fails.
That is probably because the outer doc died in the embedder process, but the parent process hasn't received a message to remove it from the ProxyAccessible tree yet.
Differential Revision: https://phabricator.services.mozilla.com/D40150
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extra : moz-landing-system : lando
It seems a bit more sensible to me that if any filtering needs to happen
from content insertions, it should happen in the doc and not the
notification controller.
Differential Revision: https://phabricator.services.mozilla.com/D40132
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extra : moz-landing-system : lando
In FocusManager::ProcessFocusEvent, after firing the event, we get the anchor jump from the target Accessible's document.
However, it seems the Accessible can be shut down during the call to nsEventShell::FireEvent, resulting in a crash when we try to get the anchor jump.
Protect against this by checking whether the target is defunct after firing the event.
Differential Revision: https://phabricator.services.mozilla.com/D39450
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extra : moz-landing-system : lando
Previously, we would always calculate the name for tr elements from their descendants unconditionally. Assistive technologies aren't using this information, moreover, it causes problems if the name gets too long, for example in layout tables.
We now only calculate the name if the tr element has an explicit ARIA role.
Differential Revision: https://phabricator.services.mozilla.com/D39314
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extra : moz-landing-system : lando
This was an oversight in the checkin for bug 1461244. tfoot was duplicated due to a copy and paste error, thead was not mapped at all. It is now properly mapped, and the test adjusted accordingly.
Differential Revision: https://phabricator.services.mozilla.com/D39305
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extra : moz-landing-system : lando
Previously, the target element for aria-activedescendant was retrieved by calling GetElementById on the owner document.
This meant that aria-activedescendant inside shadow DOM looked for ids in the owner document instead of the shadow DOM.
To fix this, use IDRefsIterator::GetElem instead.
Differential Revision: https://phabricator.services.mozilla.com/D38833
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extra : moz-landing-system : lando
IDRefsIterator::GetElem was previously an instance method which could only be used if you instantiated IDRefsIterator.
This is overkill for attributes which can only take a single id reference (rather than an id reference list).
Now, there is a static version of IDRefsIterator::GetElem which can be called with an arbitrary source element.
Any accessibility code should henceforth be using this instead of calling GetElementById directly, as this deals with shadow DOM, etc.
Differential Revision: https://phabricator.services.mozilla.com/D38832
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extra : moz-landing-system : lando
On Windows, OuterDocAccessible::GetChildAt can return a proxy wrapper for a remote document.
These aren't real Accessibles and shouldn't be returned except to the Windows a11y code (which doesn't use eDeepestChild).
Calling ChildAtPoint on these will crash!
Therefore, just return null in this case.
Differential Revision: https://phabricator.services.mozilla.com/D39135
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extra : moz-landing-system : lando
In bug 1525101, autocomplete-richlistbox-popup was converted to a Custom Element.
This means we can no longer use do_QueryInterface to get nsIAutoCompletePopup.
Instead, we must use Element::AsAutoCompletePopup.
This fixes accessibility focus for these autocompletes.
Differential Revision: https://phabricator.services.mozilla.com/D38158
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extra : moz-landing-system : lando
OuterDocAccessible can return a DocProxyAccessibleWrap or RemoteIframeDocProxyAccessibleWrap as a child.
Accessible::ChildAtPoint on an ancestor might retrieve this proxy and call Bounds() on it.
This will crash on a proxy, so we override it on these document proxies to do nothing.
Differential Revision: https://phabricator.services.mozilla.com/D38256
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extra : moz-landing-system : lando
Even though a11y DLLs are not strictly "DLL blocking," I felt that it would
make sense to include them in our unified DLL blocklist. This patch delegates
much of that functionality to the unified blocklist code. Going forward, any
further blocklist entries for in-proc a11y DLLs should be added to
mozglue/build/WindowsDllBlocklistDefs.in via the A11yBlocklistEntry type.
Differential Revision: https://phabricator.services.mozilla.com/D37001
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extra : moz-landing-system : lando
For same-process iframe documents, this reorder event is fired by the content process.
This isn't possible when the document is in a different process to its embedder.
In this case, we need to fire it from the parent process when the embedded document accessible is added.
Differential Revision: https://phabricator.services.mozilla.com/D37352
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extra : moz-landing-system : lando
James Teh
Eitan Isaacson
Kannan Vijayan
Tom Schuster
Cosmin Sabou
Razvan Maries
kriswright
Kris Maglione
Masayuki Nakano
Marco Zehe
Christian Holler
Boris Zbarsky
Dão Gottwald
Mihai Alexandru Michis
Coroiu Cristina
Gurzau Raul
Tom Ritter
Aaron Klotz
Mirko Brodesser
Noemi Erli