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.settings.notification;
18 
19 import android.content.Context;
20 import android.database.ContentObserver;
21 import android.net.Uri;
22 import android.os.Handler;
23 import android.os.Looper;
24 import android.provider.Settings;
25 
26 public class GlobalBubblePermissionObserverMixin extends ContentObserver {
27 
28     public interface Listener {
onGlobalBubblePermissionChanged()29         void onGlobalBubblePermissionChanged();
30     }
31 
32     private final Context mContext;
33     private final Listener mListener;
34 
GlobalBubblePermissionObserverMixin(Context context, Listener listener)35     public GlobalBubblePermissionObserverMixin(Context context, Listener listener) {
36         super(new Handler(Looper.getMainLooper()));
37         mContext = context;
38         mListener = listener;
39     }
40 
41     @Override
onChange(boolean selfChange, Uri uri)42     public void onChange(boolean selfChange, Uri uri) {
43         if (mListener != null) {
44             mListener.onGlobalBubblePermissionChanged();
45         }
46     }
47 
onStart()48     public void onStart() {
49         mContext.getContentResolver().registerContentObserver(
50                 Settings.Global.getUriFor(
51                         Settings.Global.NOTIFICATION_BUBBLES),
52                 false /* notifyForDescendants */,
53                 this /* observer */);
54     }
55 
onStop()56     public void onStop() {
57         mContext.getContentResolver().unregisterContentObserver(this /* observer */);
58     }
59 }