uim is an old IM which uses key snooper to listen to key events rather than
via filter key event API which should be called by applications. It's still
used by Debian 9.x, so, we still need to support this.
Unfortunately, we cannot detect if uim actually uses key snooper because it's
switch by build option of uim. Currently, Debian builds uim as using key
snooper. So, we should assume uim uses key snooper always. On the other
hand, somebody *might* use uim built as not using key snooper, so, let's
decide if uim uses key snooper with new pref,
"intl.ime.hack.uim.using_key_snooper", but its default should be true.
Note that ibus and Fcitx also have the mode to use key snooper (perhaps for
backward compatibility with uim). However, it's not enabled in default
settings and even if it's enabled, Firefox is in whitelist in the default
settings of them for stop using key snooper. Therefore, we don't need to
support key snooper mode for them unless we'll get some requests to
support their key snooping mode.
MozReview-Commit-ID: 6fTsfKrHzvo
--HG--
extra : rebase_source : 8ddf4541db635246e6bb0ddc73b012c9be001c6d
ibus and fcitx usually post key event to other IME process, then, if it causes
some signals to updating composition string, they may not send the posted
key event to us again. Then, IMContextWrapper dispatches neither eKeyDown nor
eKeyUp event since mProcessingKeyEvent becomes non-nullptr only while
OnKeyEvent() is called. So, IMContextWrapper need to store key event if
OnKeyEvent() assumes that given key event is posted to different process.
Then, if IMContextWrapper receives some signals, it should dispatch eKeyDown
and eKeyUp event with stored key event.
Note that we cannot compare the pointer of first event and following event
directly even though usually both events are same address as far as I checked
because according to the source code of ibus, fcitx and GDK, they use
gdk_event_copy() to keep storing original event. According to the document of
the API, it might just increment refcount. However, the actual implementation
of the API always creates another instance and return it. So, it might be
used same address by arena allocation or something accidentally. Anyway,
we shouldn't compare them. Instead, we need to compare each information of
two key events. Unfortunately, we also cannot compare them simply. Both
ibus and fcitx set unused bits of GdkEventKey::state to true when they send
back the event to us. Therefore, we should compare some of or all of the
members by ourselves. I think that matching time must be enough in most
cases since its value of native key events are properly set. However, for
safer code, this patch also checks type, keyval and part of state.
MozReview-Commit-ID: FZSwN61v0Sd
--HG--
extra : rebase_source : e54284c27a171f899a6cf87a65935669e2d57021
ibus and fcitx have asynchronous key event handling mode and it's enabled in
default settings. That is, when they receive a key event from application via
a call of gtk_im_context_filter_keypress(), they may post the key event
information to other IME process, then does nothing but store the copy of the
event with gdk_event_copy() and returns true for the result of
gtk_im_context_filter_keypress(). When the other IME process handles the
event, returns the result to them in our process. Then, they send the stored
key event to us again. Finally, they actually handles the event in our process
actually.
Therefore, we may receive every key event twice. So, this causes dispatching
eKeyDown event and eKeyUp event twice. Preceding key event is always marked
as "processed by IME" since gtk_im_context_filter_keypress() returns true
temporarily and following key event is dispatched as expected. So, we need
to ignore the first event only when gtk_im_context_filter_keypress() returns
true but the event is posted to different process.
Unfortunately, we cannot know if the key event is actually posted to different
process directly. However, we can know if active IM is ibus, fcitx or another
one and if ibus or fcitx is in asynchronous key handling mode.
The former information is provided by gtk_im_multicontext_get_context_id().
It returns a string which is set to the IM multicontext instance by creator.
We'll get "ibus" if IM is ibus, get "fcitx" if IM is fcitx.
The latter information is not provided. However, they consider the mode from
env value. ibus checks IBUS_ENABLE_SYNC_MODE. fcitx checks both
IBUS_ENABLE_SYNC_MODE and FCITX_ENABLE_SYNC_MODE.
Additionally, we can know if received key event has already been posted to
other IME process. They use undefined bit of GdkEventKey::state to store
if the key event has already been posted (1 << 25, they called "ignored" flag).
Although their approach is really hacky but we can refer the information at
least for now.
Finally, when we guess a key event is posted to other IME process, let's
IMContextWrapper::OnKeyEvent() not dispatch eKeyDown nor eKeyUp event.
Note that if it's handled synchronously as unexpected, it may causes
dispatching one or more composition events and/or delete content event.
So, in such case, we dispatch a keyboard event for processing key event
anyway. There is only once case we'll fail to dispatch keyboard event.
If we receive signals to dispatch composition events or delete content
command event when IM receives the result from other IME process but
it doesn't send the key event to us. This will be fixed by the following
patch.
MozReview-Commit-ID: 94PrlnmQ3uJ
--HG--
extra : rebase_source : 0bb58ed432bacef8ad13264babd2b21fe950b71c
- gfxVRExternal Enables other processes to present
real or simulated VR hardware to Firefox.
- This functionality is disabled by default, under
dom.vr.external.enabled.
- VRDisplayInfo, VRControllerInfo, and associated
structs have been restructured to ensure internal
state is not exposed via shmem interface.
- Some refactoring to convert structs to
POD types, enabling them to be located
in shmem and be memcpy'd.
- Work needed before unpreffing marked
with "TODO" comments.
MozReview-Commit-ID: FbsusbxuoQ8
--HG--
extra : rebase_source : 8a448169c3f47411c705a4d9fd462a1f9363dfd9
extra : amend_source : e6702549527292e2850d16e8f503f0be9848159f
There are only a handful of them, and two of them are duplicates of atoms
within nsGkAtoms anyway.
MozReview-Commit-ID: Cb90STdeGdK
--HG--
extra : rebase_source : 6ebc6996b129e70907f634e1876725c9e5da41ab
In each case, the atom had an obvious name and a weird name. Where possible, I
kept the obvious name and commented out the weird name, viz:
- `mixed` over `_mixed` for "mixed"
- `el` over `el_` for "el"
- `other` over `other_` for "other"
- `remote` over `Remote` for "remote"
But for several of them I didn't do that, because the weird name is used
within the HTML5 parser -- which is a huge pain to modify because it involves
code generated by code from another repo -- so I kept the weird name and
commented out the obvious name, viz:
- `list_` over `list` for "list"
- `svgSwitch` over `_switch` for "switch"
- `set_` over `set` for "set"
MozReview-Commit-ID: Jp3CpdWXNDm
--HG--
extra : rebase_source : 421ce5316772f1951488307e81f2ceee696d363d
The atoms in nsHTMLTags are a subset of nsGkAtoms, which means that
sTagAtomTable[] currently ends up holding duplicate pointers to the same static
atoms.
This patch removes sTagAtomTable[]. The only place that used sTagAtomTable[]
was nsHTMLTags::AddRefTable(). It now instead calls NS_GetStaticAtom() to get
the static atoms registered by nsGkAtoms.
The patch also moves some checking of sTagNames from RegisterAtoms() (which is
removed) to AddRefTable().
All this reduces the number of duplicate static atoms from 148 to 12.
MozReview-Commit-ID: 14qXYeoorFr
* * *
[mq]: foo
MozReview-Commit-ID: AgQbXlcvWrt
Dorel Luca
Julian Descottes
Michael Ratcliffe
arthur.iakab
Gurzau Raul
Masayuki Nakano
Coroiu Cristina
Steve Fink
Lawson Cofield
Kearwood Gilbert
Jan-Erik Rediger
Nicholas Nethercote
Paul Silaghi
Trisha
sean-chen
Dhi Aurrahman
Jason Laster
Boris Zbarsky
Ted Campbell