IMMHandler and TSFTextStore are good class to put native caret when they have
enough information. However, for example, IMMHandler may not have its singleton
instance until first composition of IMM-IME starts. Therefore, typically,
IMEHandler is a good class to put native caret without composition.
This patch adds IMEHandler::MaybeCreateNativeCaret(), and if it won't create
native caret because not yet received WM_GETOBJCT for OBJID_CARET, we should
fire window event for MSAA applications. If there is new MSAA application
retrieves OBJID_CARET, we'll receive WM_GETOBJECT for OBJID_CARET
asynchronously. Then, we should start to put native caret for such
applications.
Note that if we create native caret, some versions of ATOK refers the native
caret and the behavior becomes worse than usual. Therefore, we need to
keep not using native caret as far as possible.
Differential Revision: https://phabricator.services.mozilla.com/D13962
--HG--
extra : moz-landing-system : lando
If WM_GETOBJECT for OBJID_CARET is received but a11y module is not active,
IME module should create native caret over our caret because Windows will
handle the request with native caret automatically and we don't need to
enable a11y module only for it.
This patch makes IMEHandler store whether such message has been received and
makes TSFTextStore create native caret when composition, selection or layout
is changed because especially when there is composition, only TSFTextStore
knows correct position to put caret if there is composition or some dispatched
events have not been handled by content process yet.
Note that IMMHandler already does that since some legacy IMEs require native
caret to show its UI and we cannot check active IME strictly. Therefore, this
patch does not touch IMMHandler.
Differential Revision: https://phabricator.services.mozilla.com/D13961
--HG--
extra : moz-landing-system : lando
IMEHandler needs to create native caret later (when there is no composition).
Therefore, IMEHandler should manage whether it creates native caret or not
and IMMHandler and TSFTextStore should create/destroy native caret via
IMEHandler.
Note that this patch makes IMMHandler stops managing whether native caret
is created for plugin or not because native caret is created only one instance
and anyway IME handlers should stop managing native caret when they loses
focus.
Differential Revision: https://phabricator.services.mozilla.com/D13960
--HG--
extra : moz-landing-system : lando
If a11y module is active, it observers caret position and size, and when caret
position or size is changed, it creates/moves native caret to overlap with
our caret.
On the other hand, IME module also creates native caret if active IME requires
it. Therefore, both of them conflicts each other.
This patch makes IME module stop touching native caret if a11y module is active.
Although, a11y module with Flush Player does not work well for IME. Therefore,
this patch keeps the conflict between them as-is for now.
Differential Revision: https://phabricator.services.mozilla.com/D13959
--HG--
extra : moz-landing-system : lando
ATOK started to be TIP of TSF since 2011. Older than it, i.e., ATOK 2010 and
earlier have a lot of problems even for daily use. Perhaps, the reason is
Win 8 has a lot of changes around IMM-IME support and TSF, and ATOK 2010 is
released earlier than Win 8.
ATOK 2006 crashes while converting a word with candidate window.
ATOK 2007 doesn't paint and resize suggest window and candidate window
correctly (showing white window or too big window).
ATOK 2008 and ATOK 2009 crash when user just opens their open state.
ATOK 2010 isn't installable newly on Win 7 or later, but we have a lot of
crash reports.
Note that ATOK 2006 is the first version supporting Win XP x64. So, ATOK 2005
must not support x64 apps.
Unfortunately, we cannot block loading DLLs of them. Therefore, IMEHandler
should disassociate IMC from active window when user changes active keyboard
layout to the legacy ATOK and not associate IME with any window when
SetInputContext() is called even with "enabled". Additionally, when user
changes active keyboard layout from the legacy ATOK to one of the other
keyboard layouts, IMEHandler should associate IMC with current window for
new active IME.
MozReview-Commit-ID: RVYwmYxzO7
--HG--
extra : rebase_source : c237a3aca6ceb6a1f7251bd9421e4b905be5bc6c
Currently, we initialize TSF modules when there is only message window (this
started from bug 1341915). At this time, QQ Input (Simplified Chinese TIP)
fails to initialize itself.
Therefore, we should put off to initialize TSF modules after creating first
normal window. Then, initialize its IMC and input context for the window.
IMEHandler::InitInputContext() should be called when each normal window is
created. Therefore, calling Initialize() from it can guarantee there is
at least one normal window when Initialize() is called.
MozReview-Commit-ID: IfR4y3pYv6J
--HG--
extra : rebase_source : 3f36acfa65567f140eea9c7fc12d6268aadbd5ef
TIPs (and normal keyboard layouts) don't need IMC on focused window. So, in most environment, it's not necessary to restore default IMC of focused window.
Therefore, this patch makes IMEHandler not restore default IMC unless legacy IMM-IME is active and disassociate IMC from focused window when IMM-IME isn't active.
However, this is risky change. Therefore, the new behavior is disabled in default settings. On the other hand, we need the new behavior only when MS-IME for Japanese is active on Win10. Therefore, this patch adds a pref to enable/disable the hack and make it true in the default settings.
MozReview-Commit-ID: KAVxVT9CrsW
