This is what we did before the fix for bug 1779578.
Failure to do this meant that RemoteAccessible::IsLink() returned false even for a child of a HyperText Accessible, which meant the ATK object was created without the HyperLink interface.
This change requires that we move the handling of pending OOP child docs, since we can't add a child document until ProxyCreated has been called on the OuterDoc.
Differential Revision: https://phabricator.services.mozilla.com/D186423
The new detection code introduced in bug 1838123 doesn't work on Windows 10.
This patch:
1. Splits the Windows 11 code into its own function.
2. Refactors the system handle enumeration code into its own function which can be called with a lambda, since it is needed for both Windows 11 and Windows 10.
3. Adds code to detect clients on Windows 10 based on the old detection code before bug 1838123, with some noteworthy changes:
- Hooking the UIA window message doesn't work; our hook runs too late. It also doesn't work well for blocking; some clients will very likely poke us more than the maximum attempts in the old code (5 times).
- Instead, we run this code as part of LazyInstantiator::ShouldInstantiate, just as we do for all other client detection.
- This means we use the same UIA detection caching strategy; i.e. reset on foreground changes.
- It also means we reuse the same instantiator setting and block listing code in LazyInstantiator.
Differential Revision: https://phabricator.services.mozilla.com/D185627
The new detection code introduced in bug 1838123 doesn't work on Windows 10.
This patch:
1. Splits the Windows 11 code into its own function.
2. Refactors the system handle enumeration code into its own function which can be called with a lambda, since it is needed for both Windows 11 and Windows 10.
3. Adds code to detect clients on Windows 10 based on the old detection code before bug 1838123, with some noteworthy changes:
- Hooking the UIA window message doesn't work; our hook runs too late. It also doesn't work well for blocking; some clients will very likely poke us more than the maximum attempts in the old code (5 times).
- Instead, we run this code as part of LazyInstantiator::ShouldInstantiate, just as we do for all other client detection.
- This means we use the same UIA detection caching strategy; i.e. reset on foreground changes.
- It also means we reuse the same instantiator setting and block listing code in LazyInstantiator.
Differential Revision: https://phabricator.services.mozilla.com/D185627
Eventually, the bulk of this functionality should be moved to TextLeafRange.
In the meantime, let's get rid of the platform specific ugliness here.
Differential Revision: https://phabricator.services.mozilla.com/D185263
This is consistent with other browsers and thus more web compatible.
In particular, it makes infinite scroll work correctly on YouTube (e.g. when scrolling with screen readers), which didn't work previously.
Differential Revision: https://phabricator.services.mozilla.com/D185516
Eventually, the bulk of this functionality should be moved to TextLeafRange.
In the meantime, let's get rid of the platform specific ugliness here.
Differential Revision: https://phabricator.services.mozilla.com/D185263
Implemented the new <search> HTML element.
All WPT tests for it now pass (except one for iso-8859-8, not done generally).
A11y role uses just landmark as recommended instead of a new search role (for now).
Co-authored-by: Henri Sivonen <hsivonen@mozilla.com>
Differential Revision: https://phabricator.services.mozilla.com/D176967
This revision removes test_link.html since it has been failing mysteriously in
CI. It's unclear why this is happening, and no amount of logging or local
testing has revealed the issue. This revision migrates the tests to the browser
tests, lumping it in with similar tests in browser_caching_actions.js.
Differential Revision: https://phabricator.services.mozilla.com/D185482
Implemented the new <search> HTML element.
All WPT tests for it now pass (except one for iso-8859-8, not done generally).
A11y role uses just landmark as recommended instead of a new search role (for now).
Co-authored-by: Henri Sivonen <hsivonen@mozilla.com>
Differential Revision: https://phabricator.services.mozilla.com/D176967
Implemented the new <search> HTML element.
All WPT tests for it now pass (except one for iso-8859-8, not done generally).
A11y role uses just landmark as recommended instead of a new search role (for now).
Co-authored-by: Henri Sivonen <hsivonen@mozilla.com>
Differential Revision: https://phabricator.services.mozilla.com/D176967
New word segmenter that is compatible with UAX#29 returns different results
against the old word segmenter. Adding both results.
Differential Revision: https://phabricator.services.mozilla.com/D185272
In each case, I'm putting the declaration at the start of the script block with
the main test logic, to be sure that it gets run ASAP and enables the full log before the failure happens (hopefully).
Once we've gotten what we need from the logs (or determined them to be not
useful), we can remove these requestCompleteLog() statements.
Differential Revision: https://phabricator.services.mozilla.com/D185391
get_selections is largely based on the old IAccessible2_3::get_selectionRanges method.
However, this makes use of HyperTextAccessibleBase::CroppedSelectionRanges, which didn't exist before.
It has also been updated to return IAccessibleText pointers as required by the new interface.
setSelections is entirely new, but relies on existing mechanisms to convert offsets and to add and remove selections.
Differential Revision: https://phabricator.services.mozilla.com/D185135
IAccessibleTextSelectionContainer::setSelections passes us IAccessibleText COM pointers to identify the target Accessibles.
We need to safely get a Gecko Accessible from such a COM pointer.
The client could hand us anything, so it's not safe to just static_cast without being certain that it's one of our Accessibles.
Instead, we use an internal IID to validate that it's an MsaaAccessible and return the correct pointer, after which we can easily get the Accessible.
Differential Revision: https://phabricator.services.mozilla.com/D185134
get_selections is largely based on the old IAccessible2_3::get_selectionRanges method.
However, this makes use of HyperTextAccessibleBase::CroppedSelectionRanges, which didn't exist before.
It has also been updated to return IAccessibleText pointers as required by the new interface.
setSelections is entirely new, but relies on existing mechanisms to convert offsets and to add and remove selections.
Differential Revision: https://phabricator.services.mozilla.com/D185135
IAccessibleTextSelectionContainer::setSelections passes us IAccessibleText COM pointers to identify the target Accessibles.
We need to safely get a Gecko Accessible from such a COM pointer.
The client could hand us anything, so it's not safe to just static_cast without being certain that it's one of our Accessibles.
Instead, we use an internal IID to validate that it's an MsaaAccessible and return the correct pointer, after which we can easily get the Accessible.
Differential Revision: https://phabricator.services.mozilla.com/D185134
The methods have already been updated to used unified cross-platform methods.
All that was preventing these from working was the IsLocal restriction in QueryInterface.
Differential Revision: https://phabricator.services.mozilla.com/D185253
This is now just an alias for HyperTextAccessible on all platforms.
This was done with the following bash script:
```
cd accessible
find -name HyperTextAccessibleWrap.h -delete
sed -i 's/#include "HyperTextAccessibleWrap.h"/#include "HyperTextAccessible.h"/;/"HyperTextAccessibleWrap.h",/d;s/HyperTextAccessibleWrap/HyperTextAccessible/g' `git grep -l HyperTextAccessibleWrap`
```
Differential Revision: https://phabricator.services.mozilla.com/D184796
We previously cached aria-placeholder, but not HTML placeholder.
These both map to the placeholder object attribute exposed by Accessible::Attributes, but they are retrieved differently internally.
This also fixes LocalAccessible::Attributes to always prefer HTML placeholder over aria-placeholder as per the ARIA spec.
Previously, the attribute we preferred was somewhat indeterminate (from the user's perspective) due to the ordering of hash maps.
Differential Revision: https://phabricator.services.mozilla.com/D184795
This was done with the following Python script:
```
import re
cacheConsts = open("accessible/base/CacheConstants.h", "rt").read()
aliases = {
alias: atom
for atom, alias in
re.findall(
r'static constexpr nsStaticAtom\*\s+(.*?)\s+=\s+(nsGkAtoms::.*?);',
cacheConsts
)
}
RE_ATOM = re.compile(r'(fields->SetAttribute|(?:mCachedFields|aFields)->(?:GetAttribute|GetAttributeRefPtr|GetMutableAttribute|HasAttribute|Remove|SetAttribute)(?:<.+>)?)(\(\s*)(nsGkAtoms::[a-zA-Z_]+)')
def repl(m):
# Group 3 is the atom.
alias = aliases.get(m.group(3))
if not alias:
# No alias for this atom. Return input unaltered.
return m.group(0)
alias = "CacheKey::" + alias
# Groups 1 and 2 should be returned unaltered. Group 3 (the atom) is replaced
# with the alias.
return m.group(1) + m.group(2) + alias
for fn in (
# Found with: git grep -l 'ields->'
"accessible/base/CachedTableAccessible.cpp",
"accessible/base/nsAccessibilityService.cpp",
"accessible/base/TextLeafRange.cpp",
"accessible/generic/LocalAccessible.cpp",
"accessible/ipc/DocAccessibleParent.cpp",
"accessible/ipc/RemoteAccessible.cpp",
"accessible/ipc/RemoteAccessible.h",
"accessible/windows/sdn/sdnAccessible.cpp",
):
input = open(fn, "rt").read()
output = RE_ATOM.sub(repl, input)
open(fn, "wt").write(output)
```
Differential Revision: https://phabricator.services.mozilla.com/D184791
In the content process, we simply split into multiple calls when the number of Accessibles exceeds our maximum.
The maximum is calculated to allow for every Accessible to consume 2 KB in the IPDL message.
Currently, this means we split every 131072 Accessibles.
Of course, we could still exceed this IPDL message size if one or more Accessibles consumed a lot more than this; e.g. many labels longer than 2 KB.
However, this seems unlikely in the real world.
If this turns out to be a problem, we'll need to count the actual size of the serialized data for each Accessible.
For example, we could use AccAttributes::SizeOfExcludingThis, though that isn't exactly the serialized size.
I worry though that such data structure traversal could get expensive at scale.
In the parent process, we defer attaching the root of the new subtree to its parent until the final call.
This is achieved by saving the root during the first call and using that to attach and fire events in the final call.
Differential Revision: https://phabricator.services.mozilla.com/D184367
When we serialize a subtree, we put it into a flat list.
Previously, we included the child count for each Accessible so that we knew how many Accessibels to consume as children when de-serializing.
We also de-serialized recursively.
This made it very difficult to split serialization across IPDL calls, since we would always end up splitting in the middle of some Accessible's children.
Instead, we now no longer include the child count, but we do include the parent id and the index of the child in that parent.
This means that each Accessible can be de-serialized independently and iteratively, making it possible to split wherever we need to.
RemoteAccessible creation has also been separated from attachment of the child to its parent, since we will need this when splitting.
Differential Revision: https://phabricator.services.mozilla.com/D184366
Some member functions are defined in LocalAssessible-inl.h as inline functions, but where declared in LocalAccessible.h without inline specifiers. When compiling files, such as AccIterator.cpp, that include the LocalAccessible.h declarations but not the LocalAccessible-inl.h definitions, the compiler doesn't know that those member functions are not defined out-of-line. The linker expects to find those out-of-line definitions, but can't because they are defined inline.
Solution:
1. Include LocalAccessible-inl.h where needed.
2. Mark LocalAccessible.h's member function declarations as inline if they are defined inline in LocalAccessible-inl.h. This allows the compiler to warn when a file fails to include the LocalAccessible-inl.h definitions. Example warning:
obj-aarch64-apple-darwin22.5.0/dist/include/mozilla/a11y/LocalAccessible.h:174:30: error: inline function 'mozilla::a11y::LocalAccessible::ARIARole' is not defined [-Werror,-Wundefined-inline]
inline mozilla::a11y::role ARIARole();
^
accessible/generic/DocAccessible-inl.h:127:32: note: used here
roles::Role role = aChild->ARIARole();
instead of linker errors (in non-unified builds) like:
ld64.lld: error: undefined symbol: mozilla::a11y::LocalAccessible::IsDefunct() const
>>> referenced by AccIterator.cpp:288 (/Users/chris/Code/mozilla/firefox/accessible/base/AccIterator.cpp:288)
>>> ../../../accessible/base/AccIterator.o:(symbol mozilla::a11y::SingleAccIterator::Next()+0x48)
Differential Revision: https://phabricator.services.mozilla.com/D184603
Role.h will soon be generated, but it is generated within the obj dir, so local includes won't work.
Our C++ style guide says we should prefer exported includes wherever possible anyway.
This was done with this shell command inside the accessible/ directory:
```
sed -i 's,#include "Role.h",#include "mozilla/a11y/Role.h",' `git grep -l '#include "Role.h"'`
```
Differential Revision: https://phabricator.services.mozilla.com/D183940
Per the HTML-AAM spec, a and area elements without href attributes should have
generic roles. This revision implements this preference by creating hypertext
accessibles when said elements lack href attributes (or click listeners). A
byproduct of this change is recognizing that a elements have no intrinsic role
mapping; they could be generics or links. This revision handles situations
where href or click listeners might appear or dissapear, and recreates the
accessibles when necessary. Since image map areas are handled by their
containing image maps, this revision specializes HTMLAreaAccessible::NativeRole
to account for the discrepancy that we can't account for in the markup map.
This revision also changes the relevant WPT test expectations, updates existing
tests that this change affects, and adds tests to verify that changing href
and click listeners dynamically changes the role appropriately.
Differential Revision: https://phabricator.services.mozilla.com/D183550
In some edge cases (such as in accessible/tests/crashtests/1472024-1.html), there can be an outer HTML table which contains an inner table according to layout, but the inner table isn't included in the a11y tree.
The inner table has no semantic value, so including it wouldn't be appropriate.
However, HTMLTableAccessible::Col/RowExtent previously retrieved the table using the a11y tree, which meant we used the layout frame for the outer table instead of the inner table.
This resulted in assertions.
To fix this, always ask the cell's layout frame for the correct table frame, rather than walking the a11y tree.
As a bonus, this simplifies and trims the code somewhat.
Differential Revision: https://phabricator.services.mozilla.com/D184066
Enabling the preference in the test file seems to be causing some
flakiness, so do it in the manifest instead. Tweak the runner to make
that possible for a11y tests.
Differential Revision: https://phabricator.services.mozilla.com/D183722
Mac and Android still override HandleAccEvent for platform specific behaviour other than firing the event.
The Android behaviour can be unified properly in future work.
ATK is the platform layer with the most churn because there were inconsistencies in the way local and remote events were handled.
I'm reasonably sure these were unintentional inconsistencies, so I've done my best to unify them.
Differential Revision: https://phabricator.services.mozilla.com/D183704
This takes an Accessible and a rect and calls the local or remote versions appropriately.
This avoids the duplication of conditional behaviour in PlatformFocusEvent and PlatformCaretMoveEvent.
Differential Revision: https://phabricator.services.mozilla.com/D183702
This was done with the following command in the accessible/ directory:
```
sed -i 's/\bProxy\(.*\)Event\b/Platform\1Event/' `git grep -l 'Proxy.*Event'`
```
Differential Revision: https://phabricator.services.mozilla.com/D183700
This is a hack that was implemented a long time ago before IAccessible2.
However, it violates the MSAA API, breaks Microsoft's Inspect tool and violates the Core/HTML AAM specs.
In terms of backwards compatibility, anyone who wants to really access web content will be using IAccessible2 anyway.
Also, Chromium has never implemented this hack.
The mappings were largely taken from the Core and HTML AAM specs.
Where those specs didn't specify an MSAA role, ROLE_SYSTEM_GROUPING has been used, which is the closest we can get to a generic mapping and is also used by Chromium for these cases.
Differential Revision: https://phabricator.services.mozilla.com/D183828
This was done with the following script:
```
import re
RE_ENUM = re.compile(r'^([^=]*= *)([\d]+)([^=]*\n)$')
def processFile(fn):
inLines = open(fn, 'rt').readlines()
outLines = []
outNum = 0
for inLine in inLines:
m = RE_ENUM.match(inLine)
if m:
# Group 1 is the part of the line before the number.
# Group 2 is the number.
# Group 3 is the rest of the line after the number.
inNum = int(m.group(2))
if outNum == 0 and inNum != 0:
raise ValueError("The first enum value isn't 0: %s" % inLine)
outLine = m.group(1) + str(outNum) + m.group(3)
outNum += 1
else:
outLine = inLine
outLines.append(outLine)
open(fn, 'wt').writelines(outLines)
processFile("accessible/base/Role.h")
processFile("accessible/interfaces/nsIAccessibleRole.idl")
```
Differential Revision: https://phabricator.services.mozilla.com/D183717
I found these two tests started failing with the other patch in this bug
applied. This patch changes the timing of GCs but should have no effect on
accessibility code, which doesn't touch GCed objects.
Depends on D181539
Differential Revision: https://phabricator.services.mozilla.com/D183579
In MathML Core, the recommendation is to directly use the proper
character from the Mathematical Alphanumeric Symbols instead of the
mathvariant attribute. The exception is for automatic italicization on
single-char `<mi>` element. This is implemented via a new text-transform
value "math-auto" [1] which is the default on the `<mi>` element. The
mathvariant attribute is now restricted to that element and to value
"normal" in order to force upright text instead [2]. This CL implements
this restriction together with that new text-transform value under the
mathml.legacy_mathvariant_attribute.disabled flag.
Some legacy MathML cases where math-auto alone does not work are
still handled via MathMLTextRunFactory.
[1] https://w3c.github.io/mathml-core/#new-text-transform-values
[2] https://w3c.github.io/mathml-core/#the-mathvariant-attribute
Differential Revision: https://phabricator.services.mozilla.com/D172395
In MathML Core, the recommendation is to directly use the proper
character from the Mathematical Alphanumeric Symbols instead of the
mathvariant attribute. The exception is for automatic italicization on
single-char `<mi>` element. This is implemented via a new text-transform
value "math-auto" [1] which is the default on the `<mi>` element. The
mathvariant attribute is now restricted to that element and to value
"normal" in order to force upright text instead [2]. This CL implements
this restriction together with that new text-transform value under the
mathml.legacy_mathvariant_attribute.disabled flag.
Some legacy MathML cases where math-auto alone does not work are
still handled via MathMLTextRunFactory.
[1] https://w3c.github.io/mathml-core/#new-text-transform-values
[2] https://w3c.github.io/mathml-core/#the-mathvariant-attribute
Differential Revision: https://phabricator.services.mozilla.com/D172395
In MathML Core, the recommendation is to directly use the proper
character from the Mathematical Alphanumeric Symbols instead of the
mathvariant attribute. The exception is for automatic italicization on
single-char `<mi>` element. This is implemented via a new text-transform
value "math-auto" [1] which is the default on the `<mi>` element. The
mathvariant attribute is now restricted to that element and to value
"normal" in order to force upright text instead [2]. This CL implements
this restriction together with that new text-transform value under the
mathml.legacy_mathvariant_attribute.disabled flag.
Some legacy MathML cases where math-auto alone does not work are
still handled via MathMLTextRunFactory.
[1] https://w3c.github.io/mathml-core/#new-text-transform-values
[2] https://w3c.github.io/mathml-core/#the-mathvariant-attribute
Differential Revision: https://phabricator.services.mozilla.com/D172395
The window message we previously hooked no longer gets sent and the associated shared memory no longer seems to be created either.
Also, we don't seem to be notified about the load of UIAutomationCore.dll until after it has already instantiated a11y, which is obviously too late for us to hook anything.
Instead, we block UIA instantiation via LazyInstantiator, just as we do for MSAA/IA2:
1. Refactor CompatibilityUIA so that rather than being called by a hook, it simply allows the caller to query the process ids of any UIA clients.
2. CompatibilityUIA now searches handles in our process for named pipes created by UIA for communication with the remote process and then uses GetNamedPipeServerProcessId to get the process id on the other end of each pipe.
3. Refactor LazyInstantiator so that it first tries to get the MSAA/IA2 client process id, then calls CompatibilityUIA to get any UIA client process ids.
4. LazyInstantiator now handles setting the instantiator and blocking of clients for UIA as well as MSAA/IA2 using the same code.
5. Because UIA client detection can be expensive if clients repeatedly query us, cache the result. Reset that cache only when one of our windows comes to the foreground.
Differential Revision: https://phabricator.services.mozilla.com/D181958
The window message we previously hooked no longer gets sent and the associated shared memory no longer seems to be created either.
Also, we don't seem to be notified about the load of UIAutomationCore.dll until after it has already instantiated a11y, which is obviously too late for us to hook anything.
Instead, we block UIA instantiation via LazyInstantiator, just as we do for MSAA/IA2:
1. Refactor CompatibilityUIA so that rather than being called by a hook, it simply allows the caller to query the process ids of any UIA clients.
2. CompatibilityUIA now searches handles in our process for named pipes created by UIA for communication with the remote process and then uses GetNamedPipeServerProcessId to get the process id on the other end of each pipe.
3. Refactor LazyInstantiator so that it first tries to get the MSAA/IA2 client process id, then calls CompatibilityUIA to get any UIA client process ids.
4. LazyInstantiator now handles setting the instantiator and blocking of clients for UIA as well as MSAA/IA2 using the same code.
5. Because UIA client detection can be expensive if clients repeatedly query us, cache the result. Reset that cache only when one of our windows comes to the foreground.
Differential Revision: https://phabricator.services.mozilla.com/D181958
The code previously called DefWindowProc to get a system generated client IAccessible. However, DefWindowProc doesn't do this and I'm fairly sure it never has.
Even if we use CreateStdAccessibleObject instead:
1. We crash in LazyInstantiator's destructor because we try to call into mWeakMsaaRoot, which doesn't exist in this case.
2. We crash when some clients call us because AddRef and Release assume that we've transplanted our ref count into mRealRootUnk, but we don't do that in the case of a fake root.
3. We don't (and can't) aggregate the fake root COM object, so QueryInterface would be asymmetric. This may well cause obscure crashes/leaks.
We could fix all of these issues, but since this has clearly never been used or relied upon, we should just remove it.
We already have stub implementations for key methods and the others will just fail as they always have.
There should be no visible change with this patch.
Differential Revision: https://phabricator.services.mozilla.com/D182864
If a11y is instantiated, we always want to return the real root.
Furthermore, we clear the instantiator prop anyway when we instantiate a11y.
Therefore, calling GetProp is wasteful if a11y is instantiated.
Instead, we now only call GetProp if a11y isn't instantiated yet.
Differential Revision: https://phabricator.services.mozilla.com/D182863
We use AccessibleObjectFromWindow to get a system generated IAccessible for the window.
While this works well enough, it first sends WM_GETOBJECT to our window, goes through our window proc, etc., which is pointless since it will return nothing.
We should just call CreateStdAccessibleObject directly instead, which is what the existing code ends up doing indirectly.
Differential Revision: https://phabricator.services.mozilla.com/D182862
Gecko uses different text attribute names to ATK.
Some of the values are also in a different format.
This detail was missed in the conversion from nsPersistentProperties to AccAttributes (bug 1714390), thus regressing text attributes for ATK.
Ther old conversion code added additional attributes, mangled strings, etc.
AccAttributes allows us to do better than this, so refactor the code accordingly.
Differential Revision: https://phabricator.services.mozilla.com/D183156
This revision removes unnecessary include directives from cpp files in the
accessible/ipc directory. These suggestions came from the Include What You Use
tool.
Note that this is probably not everything here. It needs to be checked again
after rebasing on the latest unification changes.
Depends on D182401
Differential Revision: https://phabricator.services.mozilla.com/D182402
This revision removes unnecssary include directives from cpp files in the
accessible/html directory. These suggestions came from the Include What You Use
tool.
Depends on D182400
Differential Revision: https://phabricator.services.mozilla.com/D182401
This revision removes unnecessary include directives from cpp files in the
accessible/aom directory. These suggestions came from the Include What You Use
tool.
Depends on D182399
Differential Revision: https://phabricator.services.mozilla.com/D182400
This revision removes unnecessary include directives from cpp files in the
accessible/xpcom directory. These suggestions came from the Include What You
Use tool.
Depends on D182398
Differential Revision: https://phabricator.services.mozilla.com/D182399
This revision removes unnecessary include directives from cpp files in the
accessible/generic directory. These suggestions came from the Include What You
Use tool.
Depends on D182397
Differential Revision: https://phabricator.services.mozilla.com/D182398
This revision removes unnecessary include directives from cpp files in the
accessible/basetypes directory. These suggestions came from the Include What You
Use tool.
Depends on D182288
Differential Revision: https://phabricator.services.mozilla.com/D182397
This revision removes unnecessary include directives from cpp files in the
accessible/base directory. These suggestions came from the Include What You Use
tool.
Differential Revision: https://phabricator.services.mozilla.com/D182288
role="presentation" is used by pdf.js on certain spans so that display: block won't be exposed to screen readers.
Because they also have a transform, we force generic Accessibles for them.
Previously, we exposed the display attribute in this case, just like we would for any other Accessible.
To fix this, special case these presentational forced generics:
1. LocalAccessible::DisplayStyle returns null if this is a presentational element for which we forced a generic Accessible.
2. LocalAccessible::BundleFieldsForCache already used DisplayStyle, so no change was needed for the cache.
3. LocalAccessible::Attributes now uses DisplayStyle instead of calculating the display attribute itself so that it can benefit from the conditional exposure in (1).
Differential Revision: https://phabricator.services.mozilla.com/D182754
On Windows, focus and caret move events include the caret rectangle.
This isn't used on other platforms.
To simplify the cross-platform interface (including Platform.h), remove the ifdefs from there.
However, we use ifdefs to avoid calculating the rectangle on non-Windows platforms, instead just sending an empty rectangle.
Differential Revision: https://phabricator.services.mozilla.com/D182138
This patch does several things:
1. Remove virtual cursor doc accessible member.
2. Remove state-keeping nsAccessiblePivot implementation and replace it
with something that is much more similar to the native Pivot
interface.
3. Move nsIAccessiblePivot implementation to xpcom and rename it
xpcAccessiblePivot.
4. Delete mochitests and introduce browser tests.
5. Make new xpcom implementation work on remote accessibles as well.
Differential Revision: https://phabricator.services.mozilla.com/D181813
This revision updates DropMutationEvent such that it handles other event
types besides REORDER, HIDE, and SHOW. If we somehow put a different event
type through this function (particularly an inner reorder, which indicates
a reorder event that's already been dropped), we should (and now do) handle
it more gracefully.
Differential Revision: https://phabricator.services.mozilla.com/D182218
Previously, when calculating a text equivalent by walking the DOM tree, we only walked direct children of a DOM node.
However, a slot element is a placeholder for content which comes from outside of a shadow root.
In order to include this content when a slot isn't accessible (e.g. because it is hidden), we need to walk the DOM flat tree instead.
Differential Revision: https://phabricator.services.mozilla.com/D181841
A slot element has display: contents by default.
Previously, when computing a text equivalent, we would ignore the accessibility subtree if there was no frame.
This made sense back when no frame always meant display: none, but now, it could also mean display: contents.
To fix this, just look at whether the DOM node has an Accessible; don't check visibility at all.
If something really is invisible (including visibility: invisible), it shouldn't be in the a11y tree anyway.
Note that even without this fix, we should have been able to get the text equivalent for a slot by falling back to walking the DOM tree instead of the a11y tree.
Unfortunately, that is also broken... but the next patch will fix it.
Differential Revision: https://phabricator.services.mozilla.com/D181840
This revision adds a check for null to the document variable in order to avoid
dereferencing it if it's null. This defends us against a crash we can observe
when the document isn't built yet or is hidden, in which case we can't handle
an anchor jump anyway. This revision also cleans up the function a bit by adding
an early null check on the documentNode variable.
Differential Revision: https://phabricator.services.mozilla.com/D182095
This patch does several things:
1. Remove virtual cursor doc accessible member.
2. Remove state-keeping nsAccessiblePivot implementation and replace it
with something that is much more similar to the native Pivot
interface.
3. Move nsIAccessiblePivot implementation to xpcom and rename it
xpcAccessiblePivot.
4. Delete mochitests and introduce browser tests.
5. Make new xpcom implementation work on remote accessibles as well.
Differential Revision: https://phabricator.services.mozilla.com/D181813
This patch does several things:
1. Remove virtual cursor doc accessible member.
2. Remove state-keeping nsAccessiblePivot implementation and replace it
with something that is much more similar to the native Pivot
interface.
3. Move nsIAccessiblePivot implementation to xpcom and rename it
xpcAccessiblePivot.
4. Delete mochitests and introduce browser tests.
5. Make new xpcom implementation work on remote accessibles as well.
Differential Revision: https://phabricator.services.mozilla.com/D181813
This involved moving ApplyCache from the .h into the .cpp because now that the class is no longer a template, forward declaration of DocAccessibleParent is not sufficient.
Differential Revision: https://phabricator.services.mozilla.com/D181852
There are now only small differences across platforms and even those will probably go away eventually.
Rather than having separate ipdls with a lot of duplicate content, we now have a single ipdl with ifdefs.
Differential Revision: https://phabricator.services.mozilla.com/D181848
The sync IPDL RemoteAccessible::AddToSelection was removed in bug 1811092, but the DocAccessibleChildBase method remained.
This is no longer used, so remove it.
Differential Revision: https://phabricator.services.mozilla.com/D181937
This patch does several things:
1. Remove virtual cursor doc accessible member.
2. Remove state-keeping nsAccessiblePivot implementation and replace it
with something that is much more similar to the native Pivot
interface.
3. Move nsIAccessiblePivot implementation to xpcom and rename it
xpcAccessiblePivot.
4. Delete mochitests and introduce browser tests.
5. Make new xpcom implementation work on remote accessibles as well.
Differential Revision: https://phabricator.services.mozilla.com/D181813
When the Accessible is recreated for the focused node, DocAccessible::CreateSubtree calls FocusManager::DispatchFocusEvent directly.
If FocusManager::mActiveItem was set, DispatchFocusEvent previously didn't clear it, even though DispatchFocusEvent was given a new target overriding mActiveItem.
This meant that the old mActiveItem would remain until it was next set or cleared, causing assertions if it died and potentially other problems.
To fix this, DispatchFocusEvent clears mActiveItem if it is different to the target, since the target should override.
Differential Revision: https://phabricator.services.mozilla.com/D181605
This revision changes the table classification algorithm such that tables with
cells that have non-zero border width are identified as data tables. This revision
moves the check for border width above the nested table check, since we consider
that to be a more pertinent indicator. This revision also adds a test to verify
the changes.
Differential Revision: https://phabricator.services.mozilla.com/D181825
We have more readable and faster versions (that just omit the namespace
arg).
Mostly done via sed, with a couple helpers to use the faster lookups
where possible.
Differential Revision: https://phabricator.services.mozilla.com/D181795
This revision changes our focus event and anchor scroll handling to fire
scrolling start events for non-interactive targets, where "non-interactive" is
defined as "any generic, landmark, or region Accessible." This revision also
adds a test to verify that the scrolling start event is fired.
Differential Revision: https://phabricator.services.mozilla.com/D181329
1. nsAccUtils::DocumentFor might return null if the Accessible is being moved and a client queried it during the move.
2. ChildAtPoint might return null if the point can't be located at all.
Differential Revision: https://phabricator.services.mozilla.com/D181213
If we move an accessible via an aria-owns relocation on a grandparent, then move
it again via an aria-owns relocation on a parent, we can end up with multiple
hide events in the queue: one for the shallowest hide (of the grandparent), and
one for the hide of the grandchild accessible. We can't always coalesce (drop)
the hide event of the grandchild since the first move severs the relationship
between its parent and its grandparent. To address this, this revision stops us
from queueing a hide event on an accessible that's already being moved. This
revision also adds a test to verify we're getting the proper events.
Differential Revision: https://phabricator.services.mozilla.com/D180888
Previously, the code to create ARIAGridCellAccessible only ran for HTML elements.
This meant that ARIA cells weren't exposed correctly in SVG.
This code has now been moved outside of the HTML check so that it works for SVG as well.
Differential Revision: https://phabricator.services.mozilla.com/D181077
This can only happen due to authoring error; <table role=gridcell outside of an ARIA grid isn't valid.
Nevertheless, we would previously recurse infinitely in this case in ApplyARIAState.
Prevent this by not recursing if IsTable() is true.
Differential Revision: https://phabricator.services.mozilla.com/D181026
In bug 1834006, I unified the ATK child retrieval code so that it uses Accessible::EmbeddedChildAt, rather than having different code paths for local, remote, local OuterDocAccessibles embedding remote documents, etc.
Unfortunately, LocalAccessible::EmbeddedChildAt previously didn't handle remote document children, even though LocalAccessible::EmbeddedChildCount returned 1.
This meant that we weren't returning a child at all in this case on Linux, resulting in a broken tree.
To fix this, make LocalAccessible::EmbeddedChildAt fall back to ChildAt instead of LocalChildAt.
Differential Revision: https://phabricator.services.mozilla.com/D180606
aria-activedescendant should only take effect when the element has DOM focus.
Previously, clearing aria-activedescendant or setting it to an invalid id on an element without DOM focus would incorrectly fire a11y focus on that element.
Also, this caused an assertion to be fired due to a defunct active item if this happened alongside a text selection change.
Differential Revision: https://phabricator.services.mozilla.com/D180630
Unfortunately, authors providing useless alt text is becoming increasingly common, so in the real world, we can't assume that having alt text makes an image accessible.
Differential Revision: https://phabricator.services.mozilla.com/D180608
This commit ensures that we get the proper non-generic parent when creating a
grid cell accessible. Before this patch, we wouldn't see this grid cell as a
grid cell accessible. This patch also adds a test for this case, along with a
test for a similar case that inserts a generic accessible between the table
itself and a rowgroup.
Differential Revision: https://phabricator.services.mozilla.com/D180393
Now that the local-only TableAccessible and TableCellAccessible have been removed, we no longer need this Base suffix for the unified classes.
Aside from renaming the header files, most of the rest of this was done with the following script:
```
function replace {
sed -i 's/'$1'/'$2'/g' `git grep -l $1`
}
replace TableAccessibleBase TableAccessible
replace TableCellAccessibleBase TableCellAccessible
replace AsTableBase AsTable
replace AsTableCellBase AsTableCell
```
Differential Revision: https://phabricator.services.mozilla.com/D179803
These classes are no longer used.
The remaining XUL subclasses now derive from Table*AccessibleBase.
XULTreeGridAccessible depended on some methods in TableAccessible which are no longer used by anything else, so these have been moved into XULTreeGridAccessible itself.
Differential Revision: https://phabricator.services.mozilla.com/D179802
We now use CachedTableAccessible for ARIA tables and grids, so most of the code in the ARIA table classes was unused.
1. Remove ARIAGridAccessible and ARIARowAccessible completely.
2. ARIAGridCellAccessible no longer derives from TableCellAccessible.
3. Remove most of ARIAGridCellAccessible.
4. We still use ARIAGridCellAccessible to differentiate between valid and invalid cells. Valid cells create an ARIAGridCellAccessible and ARIAGridCellAccessible::IsTableCell() returns true due to mGenericTypes. Invalid cells don't get an ARIAGridCellAccessible, so IsTableCell() returns false on those.
5. We also keep the code in ARIAGridCellAccessible to expose some states and attributes.
6. The code for creating ARIAGridCellAccessible in CreateAccessible has been refactored, both for simplification and to fix bugs. display: contents tables now properly get the table and table cell interfaces; i.e. IsTable() and IsTableCell() return true when appropriate. Walking non-generic ancestors should fix ARIA tables with intervening generics, though this will be dealt with fully in a separate bug.
Differential Revision: https://phabricator.services.mozilla.com/D179801
We now use CachedTableAccessible for HTML tables, so much of the code in the HTMLTable*Accessible classes was unused.
However, we still depend on these classes for some data needed to build the cached table.
1. HTMLTableAccessible and HTMLTableCellAccessible no longer derive from TableAccessible and TableCellAccessible, respectively. Instead, callers which need specific access to HTML table data use the HTMLTable*Accessible class directly.
2. All table specific methods have been removed except those that provide data required to build a CachedTableAccessible. The remaining methods are those for querying the row/column span (which depends on layout) and getting the caption (which depends on DOM).
3. HTMLTable*Accessible are now used for all <table>, <td>, <th> and <tr> elements and MathML equivalents. ARIA*Accessible are never used for these elements. This improves consistency, simplifies the code and means that behavior specific to these HTML elements is handled in these classes, rather than in the ARIA classes as well.
4. The table and row roles are now specified in HTMLMarkupMap and MathMLMarkupMap, rather than overriding NativeRole. Cell roles are still handled in a NativeRole override; see the code comments for details.
5. IsProbablyLayoutTable has been moved from TableAccessible to HTMLTableAccessible, as it is only relevant for HTML tables, not for ARIA tables.
6. HTMLTableHeaderCellAccessible::NativeRole has been rewritten such that it no longer depends on querying table coordinates, as that would now require building a CachedTableAccessible, which would be very wasteful here. This replaces TableCellAccessible::HeaderCellRole, which has been removed.
Differential Revision: https://phabricator.services.mozilla.com/D179799
Updated HTMLMarkupMap to expose `<s>` element with an implicit `roles::CONTENT_DELETION`, updated `accessible/tests/mochitest/elm/test_HTMLSpec.html` Mochitest and expected results for `testing/web-platform/tests/html-aam/roles.html` wpt test
Differential Revision: https://phabricator.services.mozilla.com/D179842
This revision modifies NotifyOfAnchorJump in order to ensure that we fire a
scrolling start event for AT clients. Without this, clients might miss anchor
jump updates, since anchor jumps can arrive after getting focus. This revision
also adds a test to verify that the scrolling start event is now being sent.
Differential Revision: https://phabricator.services.mozilla.com/D177419
This revision modifies UncacheChildrenInSubtree such that removed but relocated
accessibles that are aria-owned are actually relocated to their proper parent
after the removal of the formerly-aria-owning parent. It also contains some
fixes for issues that allowing this relocation unleashes. In particular:
- Logic in PutChildrenBack is reworked in order to better handle different
reparenting situations, such as unacceptable parents or original containers
(or ancestors thereof) that are no longer in the document. These changes help
us avoid failure modes related to events on defunct accessibles, or bad
coalescence due to partially-shut-down trees.
- ShutdownOrPrepareForMove has been updated to handle moving children. We now
recurse through children and move them rather than just shutting them down.
This revision adds tests which verify that the functionality works as intended.
Differential Revision: https://phabricator.services.mozilla.com/D176204
Adding ARIAMap for nsGkAtoms::image and mapping to it GRAPHIC to nsGkAtoms::image instead of img in RoleMap. This allows both tests listed in the expectations metadata file in `testing/web-platform/meta/wai-aria/role/synonym-roles.html.ini` to be passing, thus removing this file.
Differential Revision: https://phabricator.services.mozilla.com/D179720
Updated HTMLMarkupMap to expose `<s>` element with an implicit `roles::CONTENT_DELETION`, updated `accessible/tests/mochitest/elm/test_HTMLSpec.html` Mochitest and expected results for `testing/web-platform/tests/html-aam/roles.html` wpt test
Differential Revision: https://phabricator.services.mozilla.com/D179842
Previously, we were making the screen coordinates relative to the window rect.
However, the window rect includes the non-client area of the window, which includes the title bar.
SetCaretPos expects client coordinates.
In Firefox, this normally doesn't matter because the title bar is disabled, so there is no non-client area.
However, when the title bar is disabled, the coordinates were previously incorrect.
Differential Revision: https://phabricator.services.mozilla.com/D176620
I don't quite know which part of this was breaking, but the coordinates were quite wrong in the parent process.
They were wrong enough that when we adjusted for the character height, we ended up with a negative height in the resulting rect.
This code is now more similar to how we do this in LocalAccessible::BoundsInAppUnits.
This should also take CSS transforms into account in most cases where we weren't previously, though perhaps not for some iframe transforms.
Differential Revision: https://phabricator.services.mozilla.com/D176619
Previously, we were making the screen coordinates relative to the window rect.
However, the window rect includes the non-client area of the window, which includes the title bar.
SetCaretPos expects client coordinates.
In Firefox, this normally doesn't matter because the title bar is disabled, so there is no non-client area.
However, when the title bar is disabled, the coordinates were previously incorrect.
Differential Revision: https://phabricator.services.mozilla.com/D176620
I don't quite know which part of this was breaking, but the coordinates were quite wrong in the parent process.
They were wrong enough that when we adjusted for the character height, we ended up with a negative height in the resulting rect.
This code is now more similar to how we do this in LocalAccessible::BoundsInAppUnits.
This should also take CSS transforms into account in most cases where we weren't previously, though perhaps not for some iframe transforms.
Differential Revision: https://phabricator.services.mozilla.com/D176619
This ensures that these are HyperTextAccessibles if they contain text, which prevents assertions and exposes formatting information.
It also gives these the correct role.
Differential Revision: https://phabricator.services.mozilla.com/D179409
We had some different results in non-caching mode. We can now unify the results and not worry about that.
Depends on D178718
Differential Revision: https://phabricator.services.mozilla.com/D178719
With caching on we can remove the legacy text marker and the abstracting class that allowed us to operate in both modes.
Depends on D178724
Differential Revision: https://phabricator.services.mozilla.com/D178717
clang is warning that C++20 expects comparison operators to be commutative: `a == b` and `b == a` should resolve to the same comparison operator function. Warnings about the comparison of const and non-const objects can be fixed by making the comparison operator function const.
accessible/base/TextAttrs.h:139:54 [-Wambiguous-reversed-operator] ISO C++20 considers use of overloaded operator '!=' (with operand types 'mozilla::a11y::TextAttrsMgr::TextDecorValue' and 'mozilla::a11y::TextAttrsMgr::TextDecorValue') to be ambiguous despite there being a unique best viable function with non-reversed arguments
...
Differential Revision: https://phabricator.services.mozilla.com/D179019
We had some different results in non-caching mode. We can now unify the results and not worry about that.
Depends on D178718
Differential Revision: https://phabricator.services.mozilla.com/D178719
With caching on we can remove the legacy text marker and the abstracting class that allowed us to operate in both modes.
Differential Revision: https://phabricator.services.mozilla.com/D178717
Gregory Pappas
Christian Holler (:decoder)
James Teh
Tom Marble
Andrew Halberstadt
Dão Gottwald
Emilio Cobos Álvarez
Natalia Csoregi
Narcis Beleuzu
CanadaHonk
Nathan LaPre
Stanca Serban
Cosmin Sabou
Makoto Kato
Masayuki Nakano
Eitan Isaacson
Daniel Holbert
Cristian Tuns
Sandor Molnar
Chris Peterson
Morgan Rae Reschenberg
Iulian Moraru
Frederic Wang
Otto Länd
Tooru Fujisawa
Jonathan Kew
Jon Coppeard
june wilde
Butkovits Atila
Malte Juergens
Norisz Fay
Vincent Hilla
Anna Yeddi
Hunseop Jeong
Noemi Erli