From 451376062a4cbc63bf1f74cad58863ff0e439e67 Mon Sep 17 00:00:00 2001
From: Mihai Nita <mnita@google.com>
Date: Tue, 22 Dec 2015 23:13:43 -0800
Subject: [PATCH] Add APIs to access various locale lists.

This includes APIs to get / set the user locale list,
and getters for the curated list of supported locales,
localized assets, and pseudo-locales.

Change-Id: Ie5771d769cd4a01f6404fa82f6f4f9bcb9b83a9e
Bug: 25800339
---
 .../android/internal/app/LocalePicker.java    | 57 ++++++++++++++++---
 1 file changed, 49 insertions(+), 8 deletions(-)

diff --git a/core/java/com/android/internal/app/LocalePicker.java b/core/java/com/android/internal/app/LocalePicker.java
index 4efefa943947d..6a365e0a69274 100644
--- a/core/java/com/android/internal/app/LocalePicker.java
+++ b/core/java/com/android/internal/app/LocalePicker.java
@@ -28,6 +28,7 @@ import android.content.res.Resources;
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.provider.Settings;
+import android.util.LocaleList;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -45,6 +46,7 @@ import java.util.ArrayList;
 public class LocalePicker extends ListFragment {
     private static final String TAG = "LocalePicker";
     private static final boolean DEBUG = false;
+    private static final String[] pseudoLocales = { "en-XA", "ar-XB" };
 
     public static interface LocaleSelectionListener {
         // You can add any argument if you really need it...
@@ -57,7 +59,7 @@ public class LocalePicker extends ListFragment {
         static final Collator sCollator = Collator.getInstance();
 
         String label;
-        Locale locale;
+        final Locale locale;
 
         public LocaleInfo(String label, Locale locale) {
             this.label = label;
@@ -83,17 +85,30 @@ public class LocalePicker extends ListFragment {
         }
     }
 
+    public static String[] getSystemAssetLocales() {
+        return Resources.getSystem().getAssets().getLocales();
+    }
+
+    public static String[] getSupportedLocales(Context context) {
+        return context.getResources().getStringArray(R.array.supported_locales);
+    }
+
+    public static String[] getPseudoLocales() {
+        return pseudoLocales;
+    }
+
     public static List<LocaleInfo> getAllAssetLocales(Context context, boolean isInDeveloperMode) {
         final Resources resources = context.getResources();
 
-        final String[] locales = Resources.getSystem().getAssets().getLocales();
+        final String[] locales = getSystemAssetLocales();
         List<String> localeList = new ArrayList<String>(locales.length);
         Collections.addAll(localeList, locales);
 
         // Don't show the pseudolocales unless we're in developer mode. http://b/17190407.
         if (!isInDeveloperMode) {
-            localeList.remove("ar-XB");
-            localeList.remove("en-XA");
+            for (String locale : pseudoLocales) {
+                localeList.remove(locale);
+            }
         }
 
         Collections.sort(localeList);
@@ -240,13 +255,24 @@ public class LocalePicker extends ListFragment {
     /**
      * Requests the system to update the system locale. Note that the system looks halted
      * for a while during the Locale migration, so the caller need to take care of it.
+     *
+     * @see #updateLocales(LocaleList)
      */
     public static void updateLocale(Locale locale) {
-        try {
-            IActivityManager am = ActivityManagerNative.getDefault();
-            Configuration config = am.getConfiguration();
+        updateLocales(new LocaleList(locale));
+    }
 
-            config.setLocale(locale);
+    /**
+     * Requests the system to update the list of system locales.
+     * Note that the system looks halted for a while during the Locale migration,
+     * so the caller need to take care of it.
+     */
+    public static void updateLocales(LocaleList locales) {
+        try {
+            final IActivityManager am = ActivityManagerNative.getDefault();
+            final Configuration config = am.getConfiguration();
+
+            config.setLocales(locales);
             config.userSetLocale = true;
 
             am.updateConfiguration(config);
@@ -256,4 +282,19 @@ public class LocalePicker extends ListFragment {
             // Intentionally left blank
         }
     }
+
+    /**
+     * Get the locale list.
+     *
+     * @return The locale list.
+     */
+    public static LocaleList getLocales() {
+        try {
+            return ActivityManagerNative.getDefault()
+                    .getConfiguration().getLocales();
+        } catch (RemoteException e) {
+            // If something went wrong
+            return LocaleList.getDefault();
+        }
+    }
 }