2 files changed, 111 insertions, 5 deletions

diff --git a/java/src/com/android/inputmethod/deprecated/LanguageSwitcherProxy.java b/java/src/com/android/inputmethod/deprecated/LanguageSwitcherProxy.java
new file mode 100644
index 000000000..5d165cda9
--- /dev/null
+++ b/java/src/com/android/inputmethod/deprecated/LanguageSwitcherProxy.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.android.inputmethod.deprecated;
+
+import com.android.inputmethod.compat.InputMethodManagerCompatWrapper;
+import com.android.inputmethod.deprecated.languageswitcher.LanguageSwitcher;
+import com.android.inputmethod.latin.LatinIME;
+
+import android.content.SharedPreferences;
+import android.content.res.Configuration;
+
+import java.util.Locale;
+
+// This class is used only when the IME doesn't use method.xml for language switching.
+public class LanguageSwitcherProxy {
+    private static final LanguageSwitcherProxy sInstance = new LanguageSwitcherProxy();
+    private LanguageSwitcher mLanguageSwitcher;
+    private SharedPreferences mPrefs;
+
+    public static LanguageSwitcherProxy getInstance() {
+        if (InputMethodManagerCompatWrapper.SUBTYPE_SUPPORTED) return null;
+        return sInstance;
+    }
+
+    public static void init(LatinIME service, SharedPreferences prefs) {
+        if (InputMethodManagerCompatWrapper.SUBTYPE_SUPPORTED) return;
+        final Configuration conf = service.getResources().getConfiguration();
+        sInstance.mLanguageSwitcher = new LanguageSwitcher(service);
+        sInstance.mLanguageSwitcher.loadLocales(prefs, conf.locale);
+        sInstance.mPrefs = prefs;
+    }
+
+    public static void onConfigurationChanged(Configuration conf) {
+        if (InputMethodManagerCompatWrapper.SUBTYPE_SUPPORTED) return;
+        sInstance.mLanguageSwitcher.onConfigurationChanged(conf, sInstance.mPrefs);
+    }
+
+    public static void loadSettings() {
+        if (InputMethodManagerCompatWrapper.SUBTYPE_SUPPORTED) return;
+        sInstance.mLanguageSwitcher.loadLocales(sInstance.mPrefs, null);
+    }
+
+    public int getLocaleCount() {
+        return mLanguageSwitcher.getLocaleCount();
+    }
+
+    public String[] getEnabledLanguages() {
+        return mLanguageSwitcher.getEnabledLanguages();
+    }
+
+    public Locale getInputLocale() {
+        return mLanguageSwitcher.getInputLocale();
+    }
+
+    public void setLocale(String localeStr) {
+        mLanguageSwitcher.setLocale(localeStr);
+        mLanguageSwitcher.persist(mPrefs);
+    }
+}
diff --git a/java/src/com/android/inputmethod/latin/LanguageSwitcher.java b/java/src/com/android/inputmethod/deprecated/languageswitcher/LanguageSwitcher.java
index 6faf7f95e..639b7cdd0 100644
--- a/java/src/com/android/inputmethod/latin/LanguageSwitcher.java
+++ b/java/src/com/android/inputmethod/deprecated/languageswitcher/LanguageSwitcher.java
@@ -14,10 +14,16 @@
  * the License.
  */
 
-package com.android.inputmethod.latin;
+package com.android.inputmethod.deprecated.languageswitcher;
+
+import com.android.inputmethod.compat.InputMethodSubtypeCompatWrapper;
+import com.android.inputmethod.latin.LatinIME;
+import com.android.inputmethod.latin.Settings;
+import com.android.inputmethod.latin.SharedPreferencesCompat;
 
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
+import android.content.res.Configuration;
 import android.text.TextUtils;
 
 import java.util.ArrayList;
@@ -29,6 +35,8 @@ import java.util.Locale;
  */
 public class LanguageSwitcher {
 
+    private static final String KEYBOARD_MODE = "keyboard";
+
     private final ArrayList<Locale> mLocales = new ArrayList<Locale>();
     private final LatinIME mIme;
     private String[] mSelectedLanguageArray;
@@ -46,12 +54,24 @@ public class LanguageSwitcher {
         return mLocales.size();
     }
 
+    public void onConfigurationChanged(Configuration conf, SharedPreferences prefs) {
+        final Locale newLocale = conf.locale;
+        if (!getSystemLocale().toString().equals(newLocale.toString())) {
+            loadLocales(prefs, newLocale);
+        }
+    }
+
     /**
      * Loads the currently selected input languages from shared preferences.
-     * @param sp
+     * @param sp shared preference for getting the current input language and enabled languages
+     * @param systemLocale the current system locale, stored for changing the current input language
+     * based on the system current system locale.
      * @return whether there was any change
      */
-    public boolean loadLocales(SharedPreferences sp) {
+    public boolean loadLocales(SharedPreferences sp, Locale systemLocale) {
+        if (systemLocale != null) {
+            setSystemLocale(systemLocale);
+        }
         String selectedLanguages = sp.getString(Settings.PREF_SELECTED_LANGUAGES, null);
         String currentLanguage   = sp.getString(Settings.PREF_INPUT_LANGUAGE, null);
         if (selectedLanguages == null || selectedLanguages.length() < 1) {
@@ -151,7 +171,7 @@ public class LanguageSwitcher {
      * Sets the system locale (display UI) used for comparing with the input language.
      * @param locale the locale of the system
      */
-    public void setSystemLocale(Locale locale) {
+    private void setSystemLocale(Locale locale) {
         mSystemLocale = locale;
     }
 
@@ -159,7 +179,7 @@ public class LanguageSwitcher {
      * Returns the system locale.
      * @return the system locale
      */
-    public Locale getSystemLocale() {
+    private Locale getSystemLocale() {
         return mSystemLocale;
     }
 
@@ -185,9 +205,22 @@ public class LanguageSwitcher {
         mCurrentIndex = prevLocaleIndex();
     }
 
+    public void setLocale(String localeStr) {
+        final int N = mLocales.size();
+        for (int i = 0; i < N; ++i) {
+            if (mLocales.get(i).toString().equals(localeStr)) {
+                mCurrentIndex = i;
+            }
+        }
+    }
+
     public void persist(SharedPreferences prefs) {
         Editor editor = prefs.edit();
         editor.putString(Settings.PREF_INPUT_LANGUAGE, getInputLanguage());
         SharedPreferencesCompat.apply(editor);
+        // When the current language is changed, the event for this change should be handled
+        // internally as a subtype switching.
+        mIme.notifyOnCurrentInputMethodSubtypeChanged(new InputMethodSubtypeCompatWrapper(
+                0, 0, getInputLocale().toString(), KEYBOARD_MODE, ""));
     }
 }