Summary: Really sorry for the size of the patch. It's mostly automatic
s/nsIDocument/Document/ but I had to fix up in a bunch of places manually to
add the right namespacing and such.
Overall it's not a very interesting patch I think.
nsDocument.cpp turns into Document.cpp, nsIDocument.h into Document.h and
nsIDocumentInlines.h into DocumentInlines.h.
I also changed a bunch of nsCOMPtr usage to RefPtr, but not all of it.
While fixing up some of the bits I also removed some unneeded OwnerDoc() null
checks and such, but I didn't do anything riskier than that.
In order to support IA2 live regions with e10s (bug 1322532), text change events sent from the child process to the parent process use sync IPC.
That comes at a slight performance cost: the content process is blocked until the parent returns from sending and handling the event.
However, there is no reason to do this if the event is not for an accessible inside a live region; current clients don't need the sync behaviour outside of live regions.
Differential Revision: https://phabricator.services.mozilla.com/D15183
--HG--
extra : source : 415f827cb9ce211c48b0c6625e917582bc81fd3a
On mingw this causes IIDs to be defined in headers. Those definitions conflict with _i.c files that are included as well. Since we include _i.c anyway, INITGUID is simply not needed.
widl can't handle generating the typelib without explicit importlib() in this case. This should be fixed in widl as well, but using importlib() in this case looks right anyway.
Also add an IsElement check in GetElementFromPoint in the APZ code since I think
the element cast is unsound in presence of Shadow DOM.
Differential Revision: https://phabricator.services.mozilla.com/D14355
--HG--
extra : moz-landing-system : lando
In order to support IA2 live regions with e10s (bug 1322532), text change events sent from the child process to the parent process use sync IPC.
That comes at a slight performance cost: the content process is blocked until the parent returns from sending and handling the event.
However, there is no reason to do this if the event is not for an accessible inside a live region; current clients don't need the sync behaviour outside of live regions.
Differential Revision: https://phabricator.services.mozilla.com/D15183
--HG--
extra : moz-landing-system : lando
The default implementation of get_accKeyboardShortcut falls back to using the keyboard accelerator if an access key is not available. For XUL menu items, this is not appropriate since the accelerator gets exposed as part of the accessible name already.
The result was a double announcement of the keyboard accelerator on menu items that did not have an access key (underlined letter).
Differential Revision: https://phabricator.services.mozilla.com/D14533
--HG--
extra : moz-landing-system : lando
In bug 1507365, we introduced the ability of nested label children of toolbar buttons to provide the accessible name for a xul:toolbarbutton element. However, the XBL of xul:toolbarbutton causes the creation of a label accessible even if no xul:label child is present, and only the label attribute is being used. The nsIAccessibleText interface on such labels is, however, completely broken. This causes NVDA's mouse tracking, which always uses the deepest nested child, to fail. As a result, when hovering over Hamburger menu items, the announcement would be wrong, e. g., lag one behind the actual button the mouse is hovering over.
To fix this, we only accept xul:label children if they come from real XUL markup, not from the label attribute and the XBL creating the label. This means that some of the test changes from bug 1507365 have to be reverted to accommodate the new old behavior. But the new test for an actual label child still passes.
Differential Revision: https://phabricator.services.mozilla.com/D14469
--HG--
extra : moz-landing-system : lando
This prevents an infinite loop where we go into a child only to find the
nearest hypertext accessible being its parent.
Differential Revision: https://phabricator.services.mozilla.com/D13998
--HG--
extra : moz-landing-system : lando
Turn all const lists and related attributes into cenums, to provide a
vague sense of type safety.
Depends on D11715
Differential Revision: https://phabricator.services.mozilla.com/D11716
--HG--
extra : moz-landing-system : lando
This is a best effort attempt at ensuring that the adverse impact of
reformatting the entire tree over the comments would be minimal. I've used a
combination of strategies including disabling of formatting, some manual
formatting and some changes to formatting to work around some clang-format
limitations.
Differential Revision: https://phabricator.services.mozilla.com/D13046
--HG--
extra : moz-landing-system : lando
There's a few subtle behavior changes here, which I'll try to break down in the
commit message.
The biggest one is the EditableDescendantCount stuff going away. This
was added in bug 1181130, to prevent clicking on the non-editable div from
selecting the editable div inside. This is problematic for multiple reasons:
* First, I don't think non-editable regions of an editable element should
be user-select: all.
* Second, it just doesn't work in Shadow DOM (the editable descendant count is
not kept up-to-date when not in the uncomposed doc), so nested
contenteditables behave differently inside vs. outside a Shadow Tree.
* Third, I think it's user hostile to just entirely disable selection if you
have a contenteditable descendant as a child of a user-select: all thing.
WebKit behaves like this patch in the following test-case (though not Blink):
https://crisal.io/tmp/user-select-all-contenteditable-descendant.html
Edge doesn't seem to support user-select: all at all (no pun intended).
But we don't allow to select anything at all which looks wrong.
* Fourth, it's not tested at all (which explains how we broke it in Shadow DOM
and not even notice...).
In any case I've verified that this doesn't regress the editor from that bug. If
this regresses anything we can fix it as outlined in the first bullet point
above, which should also make us more compatible with other UAs in that
test-case.
The other change is `all` not overriding everything else. So, something like:
<div style="-webkit-user-select: all">All <div style="-webkit-user-select: none">None</div></div>
Totally ignores the -webkit-user-select: none declaration in Firefox before this
change. This doesn't match any other UA nor the spec, and this patch aligns us
with WebKit / Blink.
This in turn makes us not need -moz-text anymore, whose only purpose was to
avoid this.
This also fixes a variety of bugs uncovered by the previous changes, like the
SetIgnoreUserModify(false) call in editor being completely useless, since
presShell->SetCaretEnabled ended in nsCaret::SetVisible, which overrode it.
This in turn uncovered even more bugs, from bugs in the caret painting code,
like not checking -moz-user-modify on the right frame if you're the last frame
of a line, to even funnier bits where before this patch you show the caret but
can't write at all...
In any case, the new setup I came up with is that when you're editing (the
selection is focused on an editable node) moving the caret forces it to end up
in an editable node, thus jumping over non-editable ones.
This has the nice effect of not completely disabling selection of
-moz-user-select: all elements that have editable descendants (which was a very
ad-hoc hack for bug 1181130, and somewhat broken per the above), and also
not needing the -moz-user-select: all for non-editable bits in contenteditable.css
at all.
This also fixes issues with br-skipping like not being able to insert content in
the following test-case:
<div contenteditable="true"><span contenteditable="false">xyz </span><br>editable</div>
If you start moving to the left from the second line, for example.
I think this yields way better behavior in all the relevant test-cases from bug
1181130 / bug 1109968 / bug 1132768, shouldn't cause any regression, and the
complexity is significantly reduced in some places.
There's still some other broken bits that this patch doesn't fix, but I'll file
follow-ups for those.
Differential Revision: https://phabricator.services.mozilla.com/D12687
--HG--
extra : moz-landing-system : lando
Creates the HTML Caption accessible from the markup map, but only if it's the first caption. Other caption elements are ignored as before.
This also creates caption accessibles for those captions that have been collapsed to zero height and width via CSS.
Differential Revision: https://phabricator.services.mozilla.com/D12756
--HG--
extra : moz-landing-system : lando
There's a few subtle behavior changes here, which I'll try to break down in the
commit message.
The biggest one is the EditableDescendantCount stuff going away. This
was added in bug 1181130, to prevent clicking on the non-editable div from
selecting the editable div inside. This is problematic for multiple reasons:
* First, I don't think non-editable regions of an editable element should
be user-select: all.
* Second, it just doesn't work in Shadow DOM (the editable descendant count is
not kept up-to-date when not in the uncomposed doc), so nested
contenteditables behave differently inside vs. outside a Shadow Tree.
* Third, I think it's user hostile to just entirely disable selection if you
have a contenteditable descendant as a child of a user-select: all thing.
WebKit behaves like this patch in the following test-case (though not Blink):
https://crisal.io/tmp/user-select-all-contenteditable-descendant.html
Edge doesn't seem to support user-select: all at all (no pun intended).
But we don't allow to select anything at all which looks wrong.
* Fourth, it's not tested at all (which explains how we broke it in Shadow DOM
and not even notice...).
In any case I've verified that this doesn't regress the editor from that bug. If
this regresses anything we can fix it as outlined in the first bullet point
above, which should also make us more compatible with other UAs in that
test-case.
The other change is `all` not overriding everything else. So, something like:
<div style="-webkit-user-select: all">All <div style="-webkit-user-select: none">None</div></div>
Totally ignores the -webkit-user-select: none declaration in Firefox before this
change. This doesn't match any other UA nor the spec, and this patch aligns us
with WebKit / Blink.
This in turn makes us not need -moz-text anymore, whose only purpose was to
avoid this.
This also fixes a variety of bugs uncovered by the previous changes, like the
SetIgnoreUserModify(false) call in editor being completely useless, since
presShell->SetCaretEnabled ended in nsCaret::SetVisible, which overrode it.
This in turn uncovered even more bugs, from bugs in the caret painting code,
like not checking -moz-user-modify on the right frame if you're the last frame
of a line, to even funnier bits where before this patch you show the caret but
can't write at all...
In any case, the new setup I came up with is that when you're editing (the
selection is focused on an editable node) moving the caret forces it to end up
in an editable node, thus jumping over non-editable ones.
This has the nice effect of not completely disabling selection of
-moz-user-select: all elements that have editable descendants (which was a very
ad-hoc hack for bug 1181130, and somewhat broken per the above), and also
not needing the -moz-user-select: all for non-editable bits in contenteditable.css
at all.
This also fixes issues with br-skipping like not being able to insert content in
the following test-case:
<div contenteditable="true"><span contenteditable="false">xyz </span><br>editable</div>
If you start moving to the left from the second line, for example.
I think this yields way better behavior in all the relevant test-cases from bug
1181130 / bug 1109968 / bug 1132768, shouldn't cause any regression, and the
complexity is significantly reduced in some places.
There's still some other broken bits that this patch doesn't fix, but I'll file
follow-ups for those.
Differential Revision: https://phabricator.services.mozilla.com/D12687
--HG--
extra : moz-landing-system : lando
Simply decouple the check for the checked attribute from the one for the type attribute.
Differential Revision: https://phabricator.services.mozilla.com/D12632
--HG--
extra : moz-landing-system : lando
When determining if an author provided an empty alt attribute versus no alt attribute at all, our image accessible name is either an empty string or a null string. Screen readers can then choose to guess the name from the source if the author did not explicitly provide an empty alt text and thus marked the image as decorative.
The accessible handler for the Windows remote processes did not account for this distinction, always returning what appeared to be an empty string. This was found while determining why NVDA wasn't guessing the SRC from a non-labelled graphical link. NVDA checks to see if the name returned by the link accessible is null, and then decides to look for the graphical children if that is the case.
Differential Revision: https://phabricator.services.mozilla.com/D12532
--HG--
extra : moz-landing-system : lando
Toolbar buttons in XUL can now have labels inside them to provide the actual caption for the button. Adjust the accessibility module to allow label elements as acceptable children for the toolbarbutton element so the algorithm can pick up their text for the button's name.
Differential Revision: https://phabricator.services.mozilla.com/D12527
--HG--
extra : moz-landing-system : lando
(Unless there were other profiler actions, as I'm not sure yet whether it would
be safe to skip them when the profiler is paused; another bug should
investigate that.)
Differential Revision: https://phabricator.services.mozilla.com/D11308
--HG--
extra : moz-landing-system : lando
This patch removes the dom.webcomponents.shadowdom.enabled pref and all its
references, including the following functions:
* nsContentUtils::IsShadowDOMEnabled()
* nsIDocument::IsShadowDOMEnabled()
* nsDocument::IsShadowDOMEnabled(JSContext* aCx, JSObject* aGlobal)
* nsDocument::IsShadowDOMEnabled(const nsINode* aNode)
* nsTextNode::IsShadowDOMEnabled(JSContext* aCx, JSObject* aObject)
This function is renamed and updated to nsDocument::IsCallerChromeOrAddon():
* nsDocument::IsShadowDOMEnabledAndCallerIsChromeOrAddon(JSContext* aCx, JSObject* aObject)
I didn't change the tests that load Shadow DOM tests in an iframe, in the interest of keeping hg annotation history.
Differential Revision: https://phabricator.services.mozilla.com/D11183
--HG--
extra : moz-landing-system : lando
This patch removes the dom.webcomponents.shadowdom.enabled pref and all its
references, including the following functions:
* nsContentUtils::IsShadowDOMEnabled()
* nsIDocument::IsShadowDOMEnabled()
* nsDocument::IsShadowDOMEnabled(JSContext* aCx, JSObject* aGlobal)
* nsDocument::IsShadowDOMEnabled(const nsINode* aNode)
* nsTextNode::IsShadowDOMEnabled(JSContext* aCx, JSObject* aObject)
This function is renamed and updated to nsDocument::IsCallerChromeOrAddon():
* nsDocument::IsShadowDOMEnabledAndCallerIsChromeOrAddon(JSContext* aCx, JSObject* aObject)
I didn't change the tests that load Shadow DOM tests in an iframe, in the interest of keeping hg annotation history.
Differential Revision: https://phabricator.services.mozilla.com/D11183
--HG--
extra : moz-landing-system : lando
In order to send send attributes in BatchData we will need to convert
them to an array. Here we factor out the private function that does that
and put it in nsAccUtils.
Differential Revision: https://phabricator.services.mozilla.com/D11211
--HG--
extra : moz-landing-system : lando
All static functions from nsAccessibilityService that were either only called once from the markup map, or are simple one-liners that were only called up to three times, were converted to lambdas in the markup map.
the static function that creates HyperTextAccessibleWrap has remained untouched because it is called a lot from the markup map, even though its implementation is actually just a one-liner.
The other untouched static function is the templated one for html:dt or html:dd.
Differential Revision: https://phabricator.services.mozilla.com/D11458
--HG--
extra : moz-landing-system : lando
Behavior-wise this only removes the HasAttr(src) check, and adds the IsEmpty()
check to the alt attribute value, since this function is only called for <img>
and <input>.
But it also cleans up a bit.
Differential Revision: https://phabricator.services.mozilla.com/D11194
Behavior-wise this only removes the HasAttr(src) check, and adds the IsEmpty()
check to the alt attribute value, since this function is only called for <img>
and <input>.
But it also cleans up a bit.
Differential Revision: https://phabricator.services.mozilla.com/D11194
--HG--
extra : source : 803b224d52a0940b4fb4b3b9cffc6a1fa6e5d4ee
Behavior-wise this only removes the HasAttr(src) check, and adds the IsEmpty()
check to the alt attribute value, since this function is only called for <img>
and <input>.
But it also cleans up a bit.
Differential Revision: https://phabricator.services.mozilla.com/D11194
Made IsTableCell() only check the generic type, not the ARIA map entry that gets checked in HasGenericType. This prevents the crash and also fixes IsTableCell() and AsTableCell() not being in sync.
Differential Revision: https://phabricator.services.mozilla.com/D10713
--HG--
extra : moz-landing-system : lando
This protocol is meant to be used by platform wrappers to push bulk data
to the chrome process.
Depends on D9689
Differential Revision: https://phabricator.services.mozilla.com/D9864
--HG--
extra : moz-landing-system : lando
If html:form has a name given via ARIA, expose it as a landmark to platform APIS that require it. At the time of this submission, this is the case for ATK.
Differential Revision: https://phabricator.services.mozilla.com/D9552
--HG--
extra : moz-landing-system : lando
We already mapped aria-current to the correct attribute, but we did so unconditionally unless the value was false or undefined. However, if the value was an invalid token, it would not be mapped to "true" as per spec. Now, any bogus value for aria-current will be mapped as if the author had specified "true".
In addition, this patch adds aria-current to the known set of attributes with rules, which causes NSAccessibilityService::MustBeAccessible to make sure an accessible gets created if aria-current is set, even if that accessible is a html:span element. This fixes bug 1365904.
Differential Revision: https://phabricator.services.mozilla.com/D10331
--HG--
extra : moz-landing-system : lando
Depends on D10191
I would like to update browser-test.js to stop swallowing exceptions
when calling loadSubScript from head.js.
It looks like those head files are trying to load a layout.js helper
that I could not find in any revision. Can you check it can be
removed?
Differential Revision: https://phabricator.services.mozilla.com/D10193
--HG--
extra : moz-landing-system : lando
The first patch inherits from the right classes, but because tables have additional interfaces, QueryInterface is overridden.
It had to be updated to also include HyperTextAccessibleWrap.
Rows worked correctly because they don't have any specific interfaces and thus don't override QI.
They just inherit their QI implementation from their base class.
Differential Revision: https://phabricator.services.mozilla.com/D10022
--HG--
extra : moz-landing-system : lando
Bug 1210630 introduced a mapping of the html:section element to roles::LANDMARK, however roles::REGION is more appropriate since that is also used by the WAI-ARIA role mapping and contains specific mappings for regions, e. g. on Mac.
Differential Revision: https://phabricator.services.mozilla.com/D9651
--HG--
extra : moz-landing-system : lando
In AccessibleWrap.cpp, VARIANT instances are initialized with {VT_I4}.
However, clang claims they should be initialized with {{{VT_I4}}}.
In CompatibilityUIA, the capturing variable is reference to static variable.
So, this patch makes it refer the static variable directly.
Differential Revision: https://phabricator.services.mozilla.com/D8511
--HG--
extra : moz-landing-system : lando
IMPL_IUNKNOWN_QUERY_HEAD defines HRESULT as hr. However, if its user uses
IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED, it's never used. Therefore, it causes
unused variable warning. hr is defined with ATTRIBUTE_UNUSED. However,
this is empty when built with clang.
IUnknownImpl.h already defines ATTRIBUTE_UNUSED as __attribute__((unused)) when
built with gcc. So, same warnings should be prevented when built with clang
too.
Differential Revision: https://phabricator.services.mozilla.com/D8510
--HG--
extra : moz-landing-system : lando
This changeset updates all the test that were wrongly using ok() and wanted to
use is() AND for which the assert is still passing without any modification
required.
Differential Revision: https://phabricator.services.mozilla.com/D8739
--HG--
extra : moz-landing-system : lando
According to the HTML Accessibility API mappings spec, aside, footer, header, main and nav elements should be mapped to the WAI-ARIA landmark role exposure. For footer and header, this is only true if scoped to the body element.
This patch changes the exposed roles to the new landmark mapping for the various platforms.
Differential Revision: https://phabricator.services.mozilla.com/D9413
--HG--
extra : moz-landing-system : lando
Proper native "groupbox" styling depends on the structure of the XBL binding. By restyling the Page Info dialog, the native styling is now unused except for the Print Page Setup dialog on Windows. The native apperance is thus not applied by default anymore, and the "groupbox" element can just be used semantically for accessibility. The Print Page Setup dialog applies the native styling on its own in a way that still works on Windows.
The only other consumers of "groupbox" are the in-content Preferences pages and dialogs. These are updated to use simpler styles that don't depend on the binding structure.
Differential Revision: https://phabricator.services.mozilla.com/D8752
--HG--
extra : rebase_source : af36d911980517f9b53036f4cd4f800c5e20ad22
This refactor does a few things:
1. Unifies the composition of the GeckoBundle, so that some tricky edge
cases don't need to be implemented twice.
2. Allows us to be more frugal with round trip sync ipc calls. Instead
of retrieving everything from the start, only progressivley retrieve
what we need.
3. Sets the groundwork for the next patch that will return from this
function earlier with a smaller bundle.
Differential Revision: https://phabricator.services.mozilla.com/D8778
--HG--
extra : moz-landing-system : lando
This refactor does a few things:
1. Unifies the composition of the GeckoBundle, so that some tricky edge
cases don't need to be implemented twice.
2. Allows us to be more frugal with round trip sync ipc calls. Instead
of retrieving everything from the start, only progressivley retrieve
what we need.
3. Sets the groundwork for the next patch that will return from this
function earlier with a smaller bundle.
Differential Revision: https://phabricator.services.mozilla.com/D8778
--HG--
extra : moz-landing-system : lando
The issue was specific to content insertion directly under a shadow root, the
rest should work (see bug 1427825 for the fix for other similar occurrences).
The removal of the aContainer argument follows the same pattern as bug 1442207.
Differential Revision: https://phabricator.services.mozilla.com/D6431
Sometimes, when cells have display:block, and a different cell in the same row has a column span, our index methods did not take these into account. Also, when regular tables encounter such a cell, index calculation failed.
Differential Revision: https://phabricator.services.mozilla.com/D7867
--HG--
extra : moz-landing-system : lando
This refactor does a few things:
1. Unifies the composition of the GeckoBundle, so that some tricky edge
cases don't need to be implemented twice.
2. Allows us to be more frugal with round trip sync ipc calls. Instead
of retrieving everything from the start, only progressivley retrieve
what we need.
3. Sets the groundwork for the next patch that will return from this
function earlier with a smaller bundle.
Differential Revision: https://phabricator.services.mozilla.com/D8778
--HG--
extra : moz-landing-system : lando
This refactor does a few things:
1. Unifies the composition of the GeckoBundle, so that some tricky edge
cases don't need to be implemented twice.
2. Allows us to be more frugal with round trip sync ipc calls. Instead
of retrieving everything from the start, only progressivley retrieve
what we need.
3. Sets the groundwork for the next patch that will return from this
function earlier with a smaller bundle.
Differential Revision: https://phabricator.services.mozilla.com/D8778
--HG--
extra : moz-landing-system : lando
This matches the spec, https://drafts.csswg.org/css-values/#angles, which says:
> All <angle> units are compatible, and deg is their canonical unit.
And https://drafts.csswg.org/css-values/#compat, which says:
>When serializing computed values [...], compatible units [...] are converted into a single canonical unit.
And also other implementations (Blink always serializes angles as degrees in
computed style for example).
Also allows us to get rid of quite a bit of code, and makes computed angle value
representation just a number, which is nice.
Differential Revision: https://phabricator.services.mozilla.com/D8619
--HG--
extra : moz-landing-system : lando
Disabled most jsunit tests temporarily in this patch. Will modify and bring them
back up in later patches, as stuff is reimplemented.
Disabled most jsat mochitests. Will have a followup for but reënabling or
porting, depending on the test.
Depends on D6681
Differential Revision: https://phabricator.services.mozilla.com/D6682
--HG--
extra : moz-landing-system : lando
This is preparation of the last patch. Even if no editor is clicked with
middle button, we need to do:
- collapse Selection at the clicked point.
- dispatch "paste" event.
Therefore, HandleMiddleClickPaste() should dispatch ePaste event by itself
and each editor methods should have a bool argument which the caller wants
ePaste event automatically.
Note that Chromium dispatches "paste" event and pastes clipboard content
into clicked editor even if preceding "auxclick" event is consumed.
However, our traditional behavior is not dispatching "paste" event nor
pasting clipboard content. Unless Chromium developer keeps their odd
behavior, we should keep our traditional behavior since our behavior is
conforming to DOM event model.
Differential Revision: https://phabricator.services.mozilla.com/D7854
--HG--
extra : moz-landing-system : lando
Disabled most jsunit tests temporarily in this patch. Will modify and bring them
back up in later patches, as stuff is reimplemented.
Disabled most jsat mochitests. Will have a followup for but reënabling or
porting, depending on the test.
Depends on D6681
Differential Revision: https://phabricator.services.mozilla.com/D6682
--HG--
extra : moz-landing-system : lando
When checking for an accessible if it is a table row instead of a table cell, when retrieving the actual row at the given index, null check it to make sure we don't pass an invalid accessible to the TableAccessible::CellInRowAt method. I accidentally omitted that null check in the updated patch for bug 1486668.
Differential Revision: https://phabricator.services.mozilla.com/D7162
--HG--
extra : moz-landing-system : lando
Make LayerViewSupport, NPZCSupport, GeckoEditableSupport, and
SessionAccessibility use the new disposal mechanism to ensure the
disposal is performed safely.
Differential Revision: https://phabricator.services.mozilla.com/D7110
--HG--
extra : moz-landing-system : lando
The code does check for the case where a container has no children.
However, before it does so, it tries to check whether it needs to skip a text leaf child.
This check previously assumed there was a child to check, which crashed for a container with no children.
Differential Revision: https://phabricator.services.mozilla.com/D6588
--HG--
extra : moz-landing-system : lando
The compiler is not smart enough to infer that MOZ_RELEASE_ASSERT(false, ...)
will never return. Using MOZ_CRASH instead.
--HG--
extra : rebase_source : 0791f203592b4edf46a517d7945cf720a197d2da
extra : intermediate-source : 44c07680d016d5d72f77c92d968e647dd8d1b6b9
extra : source : 155877282932ab2678069c9d00672191c655e5b1
Everything that goes in a PLDHashtable (and its derivatives, like
nsTHashtable) needs to inherit from PLDHashEntryHdr. But through a lack
of enforcement, copy constructors for these derived classes didn't
explicitly invoke the copy constructor for PLDHashEntryHdr (and the
compiler didn't invoke the copy constructor for us). Instead,
PLDHashTable explicitly copied around the bits that the copy constructor
would have.
The current setup has two problems:
1) Derived classes should be using move construction, not copy
construction, since anything that's shuffling hash table keys/entries
around will be using move construction.
2) Derived classes should take responsibility for transferring bits of
superclass state around, and not rely on something else to handle that.
The second point is not a huge problem for PLDHashTable (PLDHashTable
only has to copy PLDHashEntryHdr's bits in a single place), but future
hash table implementations that might move entries around more
aggressively would have to insert compensation code all over the
place. Additionally, if moving entries is implemented via memcpy (which
is quite common), PLDHashTable copying around bits *again* is
inefficient.
Let's fix all these problems in one go, by:
1) Explicitly declaring the set of constructors that PLDHashEntryHdr
implements (and does not implement). In particular, the copy
constructor is deleted, so any derived classes that attempt to make
themselves copyable will be detected at compile time: the compiler
will complain that the superclass type is not copyable.
This change on its own will result in many compiler errors, so...
2) Change any derived classes to implement move constructors instead of
copy constructors. Note that some of these move constructors are,
strictly speaking, unnecessary, since the relevant classes are moved
via memcpy in nsTHashtable and its derivatives.
Appearently with UA Widget the page loads quicker, so the tests must now
explicitly wait for the audio source to load to test on the video controls
UI in its stable state.
Depends on D3840
Differential Revision: https://phabricator.services.mozilla.com/D3841
--HG--
extra : moz-landing-system : lando
This can easily be reproduced if the ancestor being owned has role="presentation", but there are other cases as well.
If we don't prevent this, we end up with a loop.
Differential Revision: https://phabricator.services.mozilla.com/D4051
--HG--
extra : moz-landing-system : lando
All but one of the current uses of DEFFILE use `SRCDIR + '/file.def'` to
get a srcdir-relative path anyway, and the other one wants an
objdir-relative path, so using Path makes everything clearer.
This makes it more straightforward to translate the paths for the WSL
build.
