Fix the displayed name of the personal dictionary

Bug: 8976598
Change-Id: I11dd73c8c23b05288c5f417352dc4cc99d489b95

java/src/com/android/inputmethod/latin/userdictionary/UserDictionarySettings.java

@@ -150,7 +150,9 @@ public class UserDictionarySettings extends ListFragment {
         listView.setEmptyView(emptyView);
 
         setHasOptionsMenu(true);
-
+        // Show the language as a subtitle of the action bar
+        getActivity().getActionBar().setSubtitle(
+                UserDictionarySettingsUtils.getLocaleDisplayName(getActivity(), mLocale));
     }
 
     @SuppressWarnings("deprecation")

java/src/com/android/inputmethod/latin/userdictionary/UserDictionarySettingsUtils.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.latin.userdictionary;
+
+import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.utils.LocaleUtils;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import java.util.Locale;
+
+/**
+ * Utilities of the user dictionary settings
+ * TODO: We really want to move these utilities to a static library.
+ */
+public class UserDictionarySettingsUtils {
+    public static String getLocaleDisplayName(Context context, String localeStr) {
+        if (TextUtils.isEmpty(localeStr)) {
+            // CAVEAT: localeStr should not be null because a null locale stands for the system
+            // locale in UserDictionary.Words.addWord.
+            return context.getResources().getString(R.string.user_dict_settings_all_languages);
+        }
+        final Locale locale = LocaleUtils.constructLocaleFromString(localeStr);
+        final Locale systemLocale = context.getResources().getConfiguration().locale;
+        return locale.getDisplayName(systemLocale);
+    }
+}