mHasScheduleFlush is meant to track mViewManagerFlushIsPending except mViewManagerFlushIsPending gets set to false just before we call ProcessPendingUpdates, whereas mHasScheduleFlush is set to false just after we call ProcessPendingUpdates.
There are a couple places where mViewManagerFlushIsPending gets set to false that don't clear mHasScheduleFlush though. This leaves mHasScheduleFlush true until we get another paint that changed something. This causes this code
https://searchfox.org/mozilla-central/rev/3a0a8e2762821c6afc1d235b3eb3dde63ad3b01a/layout/painting/nsDisplayList.cpp#3058
in nsDisplayList::PaintRoot to always notify of invalidation (with webrender). This in turn causes a loop in the reftest harness: notify invalidation -> mozafterpaint -> update canvas -> paint -> notify invalidation.
This code changed a bunch until settling on the current design in bug 1404091.
Differential Revision: https://phabricator.services.mozilla.com/D61738
`nsRange` instances are allocated a lot in the heap especially by editor and
spellchecker. The allocation cost is too bad for benchmarks. Therefore,
we should reuse released instances as far as possible. For managing it in
static factory methods of `nsRange`, we need to hide `nsRange` constructor.
Differential Revision: https://phabricator.services.mozilla.com/D61237
Long-pressing on a text in an unfocused iframe to select a word never
works. Currently, you need to single tap to focus the iframe first.
Each PresShell has an associated AccessibleCaretEventHub. This patch
fixes this bug by routing the event to the AccessibleCaretEventHub under
the event point, and handle it there. If the event is not handled, then
we handle it by the focused AccessibleCaretEventHub as before.
I've experimented with only routing the event to the
AccessibleCaretEventHub under the event point, without routing to the
fallback focused AccessibleCaretEventHub. However, caret dragging didn't
work in iframes. I didn't debug further.
Differential Revision: https://phabricator.services.mozilla.com/D52767
We need the resolution to be restored when and if the presshell creates
a MobileViewportManager. That decision happens in
PresShell::UpdateViewportOverridden. In order for the resolution to be
saved somewhere it has to exist outside the presshell itself, since
the presshell will be destroyed and recreated during some of the
operations that also destroy the MVM -- such as closing the devtools'
Responsive Design Mode. So Document holds this resolution and gets
accessor methods to allow the presshell to get and set that resolution
as needed.
Differential Revision: https://phabricator.services.mozilla.com/D59821
It removes a script blocker. Therefore, although it depends on the caller
whether it causes running script or not. However, we should mark it as
`MOZ_CAN_RUN_SCRIPT` for safer code.
It's called only by the destructor of `nsAutoCauseReflowNotifier`. Therefore,
this patch also marks its constructor as `MOZ_CAN_RUN_SCRIPT` for making
each creator method marked as `MOZ_CAN_RUN_SCRIPT` or
`MOZ_CAN_RUN_SCRIPT_BOUNDARY`.
Most of the creators is mutation listener methods. However, `PresShell`
does nothing after destroying `nsAutoCauseReflowNotifier`. Therefore,
this patch does not change the callers in MutationObserver.cpp to use
`RefPtr<PresShell>` at calling them because changing it may cause performance
regression.
Perhaps, we should create another methods of `WillCauseReflow()` and
`DidCauseReflow()` to avoid unnecessary `MOZ_CAN_RUN_SCRIPT` marking.
However, I'm not sure whether most callers may run script or not because
of outside of my knowledge.
Differential Revision: https://phabricator.services.mozilla.com/D55805
Long-pressing on a text in an unfocused iframe to select a word never
works. Currently, you need to single tap to focus the iframe first.
Each PresShell has an associated AccessibleCaretEventHub. This patch
fixes this bug by routing the event to the AccessibleCaretEventHub under
the event point, and handle it there. If the event is not handled, then
we handle it by the focused AccessibleCaretEventHub as before.
I've experimented with only routing the event to the
AccessibleCaretEventHub under the event point, without routing to the
fallback focused AccessibleCaretEventHub. However, caret dragging didn't
work in iframes. I didn't debug further.
Differential Revision: https://phabricator.services.mozilla.com/D52767
There is no way this ever properly worked, as we always passed null for
`aFrameState`.
So it'd only work if we reframed the document element or such... Which is not
amazing.
For simpler test-cases, when we don't construct the scrollframe via
PresShell::Initialize, but via the regular frame constructor updates
(ContentAppended, etc...), those end up working because we go through lazy frame
construction, which ends up in RecreateFramesForContent, which passes
mTempFrameTreeState.
Differential Revision: https://phabricator.services.mozilla.com/D59569
On webrender on android, parent-process pages (eg about:support) were not being
rendered immediately after minimising then resuming the app, resulting in a
black screen. The problem was that webrender believed the previous frame was
still valid, and therefore that it did not need to render a new
one. Content-process pages were unnaffected because we clear cached resources
when the app is minimised, so we accidentally rendered a new frame on
resumption.
To fix this we always force a new frame to be rendered immediately on
resumption. This uncovers a race condition which causes us to sometimes render
frames at the wrong size when the window size has changed (for example when
showing or hiding the keyboard), so that is also fixed.
This also fixes a bug affecting fenix, where when opening a page in a new tab
the portion of the screen where the keyboard used to be would remain black until
the page had loaded. This no longer occurs because we force a composite as soon
as the keyboard is hidden.
Additionally, this patch reverts the original attempt at fixing this
bug, as it is not necessary.
Differential Revision: https://phabricator.services.mozilla.com/D59367
Add a script block to prevent reflow observers from running the scripts,
which may flush layout, until the end of DidDoReflow().
Specifically, Document::MaybeInitializeFinalizeFrameLoaders() can flush
layout somewhere down in the stack as bug 1606492 comment 0 shows.
Adding a script block can force it to schedule its runnable to run at
the end of DidDoReflow().
Also, HandlePostedReflowCallbacks() can flush layout. It's better to check
`mIsDestroying` before proceeding.
Differential Revision: https://phabricator.services.mozilla.com/D59015
This matches other browsers.
Keep the restriction just to chrome nodes, and in that case, avoid getting into
the broken state, which is what causes the issue. I'm not sure if this even
matters anymore given e10s but...
Differential Revision: https://phabricator.services.mozilla.com/D57475
This changeset is a simple find and replace of `MOZ_FALLTHROUGH` and `[[fallthrough]]`.
Unfortunately, the MOZ_FALLTHROUGH_ASSERT macro (to assert on case fallthrough in debug builds) is still necessary after switching from [[clang::fallthrough]] to [[fallthrough]] because:
* MOZ_ASSERT(false) followed by [[fallthrough]] triggers a -Wunreachable-code warning in DEBUG builds
* but MOZ_ASSERT(false) without [[fallthrough]] triggers a -Wimplicit-fallthrough warning in NDEBUG builds.
Differential Revision: https://phabricator.services.mozilla.com/D56440
While it calls `RestyleManager::ContentStateChanged()`, it blocks script
with `nsAutoCauseReflowNotifier`. Therefore, it should be marked as
`MOZ_CAN_RUN_SCRIPT_BOUNDARY` at least (looks like the other override,
`DocAccessible::ContentStateChanged()` does not run script).
There is a concern about the lifetime of `RestyleManager`. It's destroyed
when `nsPresContext::DetachPresShell()` is called. It's called by
`PresShell::Destroy()` and destructor of `nsPresContext`. The latter is
safe since `PresShell` owns `mPresContext` and it's never cleared. However,
I'm not sure about the former. It might be better to create blocker of
synchronous handling of `PresShell::Destroy()`.
And also this does not make `Document::ContentStateChanged()` use
`RefPtr<PresShell>` at calling it because it might cause performance
regression, but it does not do anything after destroying
`nsAutoCauseReflowNotifier`.
Finally, for guaranteeing that the lifetime of `PresShell::mPresContext` is
longer than `PresShell`, this makes it to `RefPtr<nsPresContext> const`.
However, initializing it in constructor breaks other objects' initialization
process since they assume that `PresShell::GetPresContext()` won't return
valid pointer until the `nsPresContext` is attached. For solving this issue
safe, this patch keeps setting `mPresContext` in `Init()` with `const_cast`
hack.
Differential Revision: https://phabricator.services.mozilla.com/D55804
It calls `Document::FlushPendingNotification()` so that we should mark it
as `MOZ_CAN_RUN_SCRIPT`.
And the method calls it of `mDocument` and `mDocument` is never modified
after it's initialized. Therefore, we can move the initializer to the
constructor and make `RefPtr<Document>` to `RefPtr<Document> const`. Thus,
we can avoid unnecessary auto `RefPtr`.
Differential Revision: https://phabricator.services.mozilla.com/D55803
The inclusions were removed with the following very crude script and the
resulting breakage was fixed up by hand. The manual fixups did either
revert the changes done by the script, replace a generic header with a more
specific one or replace a header with a forward declaration.
find . -name "*.idl" | grep -v web-platform | grep -v third_party | while read path; do
interfaces=$(grep "^\(class\|interface\).*:.*" "$path" | cut -d' ' -f2)
if [ -n "$interfaces" ]; then
if [[ "$interfaces" == *$'\n'* ]]; then
regexp="\("
for i in $interfaces; do regexp="$regexp$i\|"; done
regexp="${regexp%%\\\|}\)"
else
regexp="$interfaces"
fi
interface=$(basename "$path")
rg -l "#include.*${interface%%.idl}.h" . | while read path2; do
hits=$(grep -v "#include.*${interface%%.idl}.h" "$path2" | grep -c "$regexp" )
if [ $hits -eq 0 ]; then
echo "Removing ${interface} from ${path2}"
grep -v "#include.*${interface%%.idl}.h" "$path2" > "$path2".tmp
mv -f "$path2".tmp "$path2"
fi
done
fi
done
Differential Revision: https://phabricator.services.mozilla.com/D55443
It's a better name, and will avoid confusion when I add other stylesheet caches
outside of the CSS loader.
Depends on D54556
Differential Revision: https://phabricator.services.mozilla.com/D54557
On Chrome, visual viewport resize event is fired repeatedly during dynamic
toolbar transitions and visual viewport height obtained by the VisualViewport
API is also changed, but in terms of layout the height value is never used
until the dynamic toolbar height reaches to zero or is changed from zero.
The height used at the time is the height for vh units when the toolbar height
reaches to zero and the ICB height when the toolbar height is changed from zero.
To do so, we need to have another visual viewport size in parallel to the
original one and use them depending on situations.
Differential Revision: https://phabricator.services.mozilla.com/D52338
The dynamic toolbar transition doesn't affect on background tabs since to
switch tabs the dynamic toolbar should be restored to its original state (i.e.,
completely visible state).
Differential Revision: https://phabricator.services.mozilla.com/D52336
This means we no longer have any use for the frame state bit
"NS_STATE_FLEX_MEASUREMENTS_INTERRUPTED". Now, if a flex container
has N children and only the last child is interrupted, we'll only
purge the last child's measurement (and we'll do it promptly at the
end of the whole interrupted reflow).
Differential Revision: https://phabricator.services.mozilla.com/D53687
This adds two AUTO_PROFILER_LABEL_DYNAMIC_... macros and updates select
usages of the old macros to use the new ones. These new macros cause
the dynamic string of the label to be included in BHR stacks.
We don't want to do this all of the time, as in many cases we may not
be interested enough in the dynamic string or it may be sensitive
information, but it is rather important information for certain cases.
This uses the same buffer that we use for the strings for JS frames,
and if we fail to fit into that buffer we just append the raw label.
If the string is too long for our static buffer (128 bytes), we just
leave it truncated, as it should be stable and we may be able to infer
from the truncated form what the full form would be.
Differential Revision: https://phabricator.services.mozilla.com/D51665
This was generated with:
```
rg -l -g '*.{cpp,h}' MOZ_XBL . | while read FILE ; do
echo $FILE
unifdef -m -UMOZ_XBL $FILE
done
```
After this, I manually removed the directive in nsContentUtils.cpp due to:
unifdef: ./dom/base/nsContentUtils.cpp: 4630: Unterminated string literal
unifdef: Output may be truncated
Differential Revision: https://phabricator.services.mozilla.com/D51337
For regular elements, whenever -moz-appearance is used, the CSS background is
ignored. Root elements were behaving specially, and the background color also
needed to be adjusted.
For example, for Windows 7, we have the following CSS rule;
```
:root {
background-color: transparent;
-moz-appearance: -moz-win-borderless-glass;
}
```
This change makes the root element more consistent with other elements, so the
extra `background-color: transparent` declaration is no longer necessary.
This change does not let content documents opt out of forced opaqueness:
Root content documents still get an opaque background color from an existing
check further down in this method.
Differential Revision: https://phabricator.services.mozilla.com/D51459
