Revert I432be8f7 partially

This change reverts removing SubtypeSwitcher.onConfigurationChanged by careless in I432be8f7.
Bug: 3290290

Change-Id: I796ea01877d61eb750dabdeb3fdbf87666646c56

2 files changed, 18 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index bea44eef2..4a78c2e7a 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -444,6 +444,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
 
     @Override
     public void onConfigurationChanged(Configuration conf) {
+        mSubtypeSwitcher.onConfigurationChanged(conf);
         // If orientation changed while predicting, commit the change
         if (conf.orientation != mOrientation) {
             InputConnection ic = getCurrentInputConnection();
diff --git a/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java b/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java
index 968495b8e..21c99fe09 100644
--- a/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java
+++ b/java/src/com/android/inputmethod/latin/SubtypeSwitcher.java
@@ -370,6 +370,23 @@ public class SubtypeSwitcher {
         }
     }
 
+    public void onConfigurationChanged(Configuration conf) {
+        final Locale systemLocale = conf.locale;
+        // If system configuration was changed, update all parameters.
+        if (!TextUtils.equals(systemLocale.toString(), mSystemLocale.toString())) {
+            if (mConfigUseSpacebarLanguageSwitcher) {
+                // If the system locale changes and is different from the saved
+                // locale (mSystemLocale), then reload the input locale list from the
+                // latin ime settings (shared prefs) and reset the input locale
+                // to the first one.
+                mLanguageSwitcher.loadLocales(mPrefs);
+                mLanguageSwitcher.setSystemLocale(systemLocale);
+            } else {
+                updateAllParameters();
+            }
+        }
+    }
+
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
         if (mConfigUseSpacebarLanguageSwitcher) {
             if (Settings.PREF_SELECTED_LANGUAGES.equals(key)) {