Gijs for front-end bits, layout for the new CSS properties and the
removal of nsDeckFrame / nsStackLayout, Jamie and Morgan for the a11y
changes.
As discussed in the bug, the main tricky part here is handling a11y
correctly. For <deck>, that's trivial (just use `visibility: hidden` to
hide the panels visually, while removing the unselected panels from the
a11y tree).
For <tabpanels> however we need to do something special. We do want to
hide stuff visually, but we want to preserve the contents in the a11y
tree.
For that, the easiest fix is introducing a new privileged CSS property
(-moz-subtree-hidden-only-visually), which takes care of not painting
the frame, but marks stuff offscreen in the accessibility tree. This is
not intended to be a property used widely.
Other than that, the changes are relatively straight-forward, though
some of the accessible/mac changes I could get a sanity-check on.
Differential Revision: https://phabricator.services.mozilla.com/D157875
Gijs for front-end bits, layout for the new CSS properties and the
removal of nsDeckFrame / nsStackLayout, Jamie and Morgan for the a11y
changes.
As discussed in the bug, the main tricky part here is handling a11y
correctly. For <deck>, that's trivial (just use `visibility: hidden` to
hide the panels visually, while removing the unselected panels from the
a11y tree).
For <tabpanels> however we need to do something special. We do want to
hide stuff visually, but we want to preserve the contents in the a11y
tree.
For that, the easiest fix is introducing a new privileged CSS property
(-moz-subtree-hidden-only-visually), which takes care of not painting
the frame, but marks stuff offscreen in the accessibility tree. This is
not intended to be a property used widely.
Other than that, the changes are relatively straight-forward, though
some of the accessible/mac changes I could get a sanity-check on.
Differential Revision: https://phabricator.services.mozilla.com/D157875
This revision slightly reworks the way that we calculate accessible bounds in
RemoteAccessibleBase::BoundsWithOffset. Rather than looking "below" the current
accessible for a doc accessible to determine whether we should apply a cached
cross-process offset, we instead look "above" the current accessible, to its
parent, to check for a cross-process offset to apply. Then, in ApplyTransform,
we ensure that we maintain that cross-process offset.
Differential Revision: https://phabricator.services.mozilla.com/D157240
I don't understand why we don't allow any box through, but for now this
is a safer change to restore the previous behavior when emulated flex
box is used.
Differential Revision: https://phabricator.services.mozilla.com/D158002
They and their callees work with the result of `GetRoot()` which is the document
element or the body element. If the body is not editable, `Selection` should
not be updated in non-editable region nor `<br>` elements should not be
inserted in both non-focused editable elements and non-editable elements.
Therefore, they should run only when the document element or the `<body>`
element is editable.
To keep testing crashtests as reported, this patch makes tests which have
`contenteditable` except `<html>` and `<body>` initialize `Selection` as
what we've done. And clean up the tests for helping to port them to WPT
in the future (bug 1725850).
Differential Revision: https://phabricator.services.mozilla.com/D157408
Previously, we were not firing active state change events for the options in
<select> elements when the drop-down was expanded. This leads to possibly-stale
cached 'active' state in the parent process, which can cause Firefox to report
incorrect combo box values based on stale state. Rather than fire more 'active'
state change events to fix the problem, this revision addresses the problem by
not firing 'active' state change events for combo boxes at all, and instead
relying on the selection state when determining the combo box value in the
parent process. This revision also adds a test to verify that the behavior is
as expected.
Differential Revision: https://phabricator.services.mozilla.com/D156627
For methods supported by the cache, we already delegate to RemoteAccessibleBase where the caching implementation lives.
However, there are still some less used methods which aren't supported by the cache yet.
These methods are never called by the code which Windows a11y clients interact with (MsaaAccessible and friends).
However, they can be called from XPCOM; e.g. when using the Browser Console.
For now, just early return in these cases so we don't crash.
Eventually, we'll need to unify these methods and support them with the cache enabled.
Differential Revision: https://phabricator.services.mozilla.com/D156771
We expect acc to be a local OuterDocAccessible.
However, the OuterDocAccessible might die before the top level DocAccessibleParent, in which case acc will be null.
In this case, the DocAccessibleParent is about to die anyway, so it doesn't matter that the bounds we return are slightly wrong (since they can't take the OuterDoc into account).
Differential Revision: https://phabricator.services.mozilla.com/D156773
This variable was supposed to be removed long ago in bug 813019, but the
declaration was left behind by accident, it seems.
Differential Revision: https://phabricator.services.mozilla.com/D156879
JAWS won't expose MathML without this.
We can't fully support it; we don't cache info about namespaces, for example.
However, this implementation is enough to get MathML working with JAWS.
Differential Revision: https://phabricator.services.mozilla.com/D156150
This commit adds mappings for HTML sub and sup elements, as well as ARIA
role mappings for subscript, superscript roles, with the goal of properly
exposing this information to the accessibility tree. This commit also updates
text attribute code to account for the attributes implied by those roles.
Finally, this commit updates tests to verify that the role and attribute
information is working properly.
Differential Revision: https://phabricator.services.mozilla.com/D155523
Windows a11y clients retrieve MathML markup using ISimpleDOMNode::innerHTML.
We cache innerHTML to support this, but only on math elements and only on Windows.
sdnAccessible had to be modified to support RemoteAccessible and to use the cache for this method.
Differential Revision: https://phabricator.services.mozilla.com/D155806
This can happen in a container containing no actual characters.
Previously, we would end up in an infinite loop in this case.
Differential Revision: https://phabricator.services.mozilla.com/D155570
Emilio Cobos Álvarez
Marian-Vasile Laza
Nathan LaPre
Eitan Isaacson
Masayuki Nakano
Joel Maher
Frederic Wang
Ryan VanderMeulen
Morgan Rae Reschenberg
Butkovits Atila
James Teh
Daniel Holbert
criss
Olli Pettay
Cosmin Sabou
Mark Banner