Pass viewable locales to LocalePickerWithRegion

Bug: b/249219775
Test: Manual test
Change-Id: I48f2f02a365d3597023e021a7819d31709e6d5d8

src/com/android/settings/localepicker/AppLocalePickerActivity.java

@@ -78,6 +78,7 @@ public class AppLocalePickerActivity extends SettingsBaseActivity
                 mContextAsUser,
                 this,
                 false /* translate only */,
+                null,
                 mPackageName,
                 this);
         mAppLocaleDetails = AppLocaleDetails.newInstance(mPackageName, mContextAsUser.getUserId());

src/com/android/settings/localepicker/LocaleListEditor.java

@@ -307,6 +307,7 @@ public class LocaleListEditor extends RestrictedSettingsFragment {
 
                 final Intent intent = new Intent(getActivity(),
                         LocalePickerWithRegionActivity.class);
+                intent.putExtras(getActivity().getIntent().getExtras());
                 startActivityForResult(intent, REQUEST_LOCALE_PICKER);
             }
         });

src/com/android/settings/localepicker/LocalePickerWithRegionActivity.java

@@ -19,6 +19,9 @@ package com.android.settings.localepicker;
 import android.app.FragmentTransaction;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.LocaleList;
+import android.provider.Settings;
+import android.util.Log;
 import android.view.MenuItem;
 
 import com.android.internal.app.LocalePickerWithRegion;
@@ -29,7 +32,7 @@ import com.android.settings.core.SettingsBaseActivity;
 /** A activity to show the locale picker page. */
 public class LocalePickerWithRegionActivity extends SettingsBaseActivity
         implements LocalePickerWithRegion.LocaleSelectedListener {
-
+    private static final String TAG = LocalePickerWithRegionActivity.class.getSimpleName();
     private static final String PARENT_FRAGMENT_NAME = "localeListEditor";
 
     @Override
@@ -37,9 +40,20 @@ public class LocalePickerWithRegionActivity extends SettingsBaseActivity
         super.onCreate(savedInstanceState);
         getActionBar().setDisplayHomeAsUpEnabled(true);
         setTitle(R.string.add_a_language);
+        LocaleList explicitLocales = null;
+        if (isDeviceDemoMode()) {
+            Bundle bundle = getIntent().getExtras();
+            explicitLocales = bundle == null
+                    ? null
+                    : bundle.getParcelable(Settings.EXTRA_EXPLICIT_LOCALES, LocaleList.class);
+            Log.i(TAG, "Has explicit locales : " + explicitLocales);
+        }
 
         final LocalePickerWithRegion selector = LocalePickerWithRegion.createLanguagePicker(
-                this, LocalePickerWithRegionActivity.this, false /* translate only */);
+                this,
+                LocalePickerWithRegionActivity.this,
+                false /* translate only */,
+                explicitLocales);
         getFragmentManager()
                 .beginTransaction()
                 .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
@@ -78,5 +92,10 @@ public class LocalePickerWithRegionActivity extends SettingsBaseActivity
             finish();
         }
     }
+
+    private boolean isDeviceDemoMode() {
+        return Settings.Global.getInt(
+                getContentResolver(), Settings.Global.DEVICE_DEMO_MODE, 0) == 1;
+    }
 }