1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.car.settings.language;
18 
19 import androidx.annotation.Nullable;
20 import androidx.preference.Preference;
21 
22 import com.android.internal.app.LocaleStore;
23 
24 import java.util.Locale;
25 
26 /** Utilities to get/set LocaleInfo from preferences. */
27 public class LocaleUtil {
28     /** This key is also used to add Locale to the bundle for {@link ChildLocalePickerFragment}. */
29     public static final String LOCALE_BUNDLE_KEY = "locale_key";
30 
31     /** Private constructor to prevent others from instantiating this class. */
LocaleUtil()32     private LocaleUtil() {
33     }
34 
35     /** Extract the locale from the given locale info and add to preference arguments. */
setLocaleArgument(Preference preference, LocaleStore.LocaleInfo localeInfo)36     public static void setLocaleArgument(Preference preference, LocaleStore.LocaleInfo localeInfo) {
37         preference.getExtras().putSerializable(LOCALE_BUNDLE_KEY, localeInfo.getLocale());
38     }
39 
40     /** Extract the localeInfo from the preference, if it exists. */
41     @Nullable
getLocaleArgument(Preference preference)42     public static LocaleStore.LocaleInfo getLocaleArgument(Preference preference) {
43         Locale locale = (Locale) preference.getExtras().getSerializable(LOCALE_BUNDLE_KEY);
44         if (locale == null) {
45             return null;
46         }
47         return LocaleStore.getLocaleInfo(locale);
48     }
49 }
50