bug 1622111 - Convert intl.ime.hack.on_ime_unaware_apps.fire_key_events_for_composition to static pref r=njn

Converts `intl.ime.hack.on_ime_unaware_apps.fire_key_events_for_composition` to a static pref.

Differential Revision: https://phabricator.services.mozilla.com/D67203

--HG--
extra : moz-landing-system : lando

dom/events/IMEStateManager.cpp

@@ -13,9 +13,9 @@
 #include "mozilla/EventListenerManager.h"
 #include "mozilla/EventStates.h"
 #include "mozilla/MouseEvents.h"
-#include "mozilla/Preferences.h"
 #include "mozilla/PresShell.h"
 #include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/StaticPrefs_intl.h"
 #include "mozilla/TextComposition.h"
 #include "mozilla/TextEvents.h"
 #include "mozilla/ToString.h"
@@ -76,15 +76,9 @@ InputContext::Origin IMEStateManager::sOrigin = InputContext::ORIGIN_MAIN;
 InputContext IMEStateManager::sActiveChildInputContext;
 bool IMEStateManager::sInstalledMenuKeyboardListener = false;
 bool IMEStateManager::sIsGettingNewIMEState = false;
-bool IMEStateManager::sCheckForIMEUnawareWebApps = false;
 
 // static
 void IMEStateManager::Init() {
-  Preferences::AddBoolVarCache(
-      &sCheckForIMEUnawareWebApps,
-      "intl.ime.hack.on_ime_unaware_apps.fire_key_events_for_composition",
-      false);
-
   sOrigin = XRE_IsParentProcess() ? InputContext::ORIGIN_MAIN
                                   : InputContext::ORIGIN_CONTENT;
   ResetActiveChildInputContext();
@@ -1262,9 +1256,11 @@ void IMEStateManager::SetIMEState(const IMEState& aState,
   InputContext context;
   context.mIMEState = aState;
   context.mOrigin = aOrigin;
-  context.mMayBeIMEUnaware = context.mIMEState.IsEditable() &&
-                             sCheckForIMEUnawareWebApps &&
-                             MayBeIMEUnawareWebApp(aContent);
+  context.mMayBeIMEUnaware =
+      context.mIMEState.IsEditable() &&
+      StaticPrefs::
+          intl_ime_hack_on_ime_unaware_apps_fire_key_events_for_composition() &&
+      MayBeIMEUnawareWebApp(aContent);
 
   context.mHasHandledUserInput =
       aPresContext && aPresContext->PresShell()->HasHandledUserInput();

modules/libpref/init/StaticPrefList.yaml

@@ -4456,6 +4456,18 @@
   value: @IS_ANDROID@
   mirror: always
 
+# Android-specific pref to control if keydown and keyup events are fired even
+# during composition.  Note that those prefs are ignored if
+# dom.keyboardevent.dispatch_during_composition is false.
+- name: intl.ime.hack.on_ime_unaware_apps.fire_key_events_for_composition
+  type: bool
+# If true and intl.ime.hack.on_any_apps.fire_key_events_for_composition is
+# false, dispatch the keydown and keyup events only on IME-unaware web apps.
+# So, this supports web apps which listen to only keydown or keyup events
+# to get a change to do something at every text input.
+  value: @IS_ANDROID@
+  mirror: always
+
 #---------------------------------------------------------------------------
 # Prefs starting with "javascript."
 #---------------------------------------------------------------------------

modules/libpref/init/all.js

@@ -2037,19 +2037,6 @@ pref("intl.fallbackCharsetList.ISO-8859-1", "windows-1252");
 pref("font.language.group",                 "chrome://global/locale/intl.properties");
 pref("font.cjk_pref_fallback_order",        "zh-cn,zh-hk,zh-tw,ja,ko");
 
-// Android-specific pref to control if keydown and keyup events are fired even
-// in during composition.  Note that those prefs are ignored if
-// "dom.keyboardevent.dispatch_during_composition" is false.
-#ifdef MOZ_WIDGET_ANDROID
-  // If true and intl.ime.hack.on_any_apps.fire_key_events_for_composition is
-  // false, dispatch the keydown and keyup events only on IME-unaware web apps.
-  // So, this supports web apps which listen to only keydown or keyup events
-  // to get a change to do something at every text input.
-  pref("intl.ime.hack.on_ime_unaware_apps.fire_key_events_for_composition", true);
-#else
-  pref("intl.ime.hack.on_ime_unaware_apps.fire_key_events_for_composition", false);
-#endif // MOZ_WIDGET_ANDROID
-
 // If you use legacy Chinese IME which puts an ideographic space to composition
 // string as placeholder, this pref might be useful.  If this is true and when
 // web contents forcibly commits composition (e.g., moving focus), the