1 /*
2  * Copyright (C) 2019 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.wallpaperbackup.utils;
18 
19 import android.content.Context;
20 import android.content.ContextWrapper;
21 import android.content.SharedPreferences;
22 
23 import java.util.HashMap;
24 import java.util.Map;
25 
26 public class ContextWithServiceOverrides extends ContextWrapper {
27     private static final String TAG = "ContextWithOverrides";
28 
29     private Map<String, Object> mInjectedSystemServices = new HashMap<>();
30     private SharedPreferences mSharedPreferencesOverride;
31 
ContextWithServiceOverrides(Context base)32     public ContextWithServiceOverrides(Context base) {
33         super(base);
34     }
35 
injectSystemService(Class<S> cls, S service)36     public <S> void injectSystemService(Class<S> cls, S service) {
37         final String name = getSystemServiceName(cls);
38         mInjectedSystemServices.put(name, service);
39     }
40 
41     @Override
getApplicationContext()42     public Context getApplicationContext() {
43         return this;
44     }
45 
46     @Override
getSystemService(String name)47     public Object getSystemService(String name) {
48         if (mInjectedSystemServices.containsKey(name)) {
49             return mInjectedSystemServices.get(name);
50         }
51         return super.getSystemService(name);
52     }
53 
setSharedPreferencesOverride(SharedPreferences override)54     public void setSharedPreferencesOverride(SharedPreferences override) {
55         mSharedPreferencesOverride = override;
56     }
57 
58     @Override
getSharedPreferences(String name, int mode)59     public SharedPreferences getSharedPreferences(String name, int mode) {
60         return mSharedPreferencesOverride == null
61                 ? super.getSharedPreferences(name, mode)
62                 : mSharedPreferencesOverride;
63     }
64 }
65