This part is mainly to mark the channel as urgent-start if src related
attributes in HTMLImageElement and HTMLInputElement is set and the channel is
open due to user interaction. Unfortunately, we cannot just check the event
state just after creating channel since some loading image tasks will be queue
and execute in stable state. Thus, I store the event state in elements and
pass it to the place where create the channel.
MozReview-Commit-ID: GBdAkPfVzsn
This is a bug from https://hg.mozilla.org/mozilla-central/rev/2d171d75b746 (bug 1157546). It took a shortcut in trying to get around one of the downsides of tracking visibility on frames instead of content nodes.
We cannot get our primary frame during FrameCreate calls because FrameCreate is called during the frame's Init() function, which happens before the primary frame pointer is set.
So when TrackImage is called from FrameCreate |frame| will be null but mFrameCreateCalled will be true. So we won't hit the early return that tries to detect nonvisible images.
The comment being removed is just wrong. We can obtain a frame for <feImage> just as well as any other image type.
The thing that is different about <feImage> is that it calls IncApproximateVisibleCount() followed by FrameCreated() in the frame's Init() function. This means that the frame is marked visible at the time of the FrameCreated, and there will be no further calls to TrackImage (because there are no further changes). So the FrameCreated call is the last chance to mark this image visible. The regressing changeset tries to get around this by just considering the image visible whenever we know a frame exists (because of mFrameCreateCalled) but can't access it. This ends up affecting all types of images, not just <feImage>.
The above paragraph is also true for SVG <image> that are non-display.
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout. The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.
CLOSED TREE makes big refactorings like this a piece of cake.
# The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
xargs perl -p -i -e '
s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
s/nsRefPtr ?</RefPtr</g; # handle declarations and variables
'
# Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h
# Handle nsRefPtr.h itself, a couple places that define constructors
# from nsRefPtr, and code generators specially. We do this here, rather
# than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
# things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
mfbt/nsRefPtr.h \
xpcom/glue/nsCOMPtr.h \
xpcom/base/OwningNonNull.h \
ipc/ipdl/ipdl/lower.py \
ipc/ipdl/ipdl/builtin.py \
dom/bindings/Codegen.py \
python/lldbutils/lldbutils/utils.py
# In our indiscriminate substitution above, we renamed
# nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'
if [ -d .git ]; then
git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi
