1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.systemui.util;
16 
17 import android.app.NotificationChannel;
18 import android.app.NotificationManager;
19 import android.content.Context;
20 import android.content.pm.PackageManager;
21 import android.media.AudioAttributes;
22 import android.net.Uri;
23 import android.provider.Settings;
24 
25 import com.android.internal.annotations.VisibleForTesting;
26 import com.android.systemui.CoreStartable;
27 import com.android.systemui.res.R;
28 import com.android.wm.shell.pip.tv.TvPipNotificationController;
29 
30 import java.util.Arrays;
31 
32 import javax.inject.Inject;
33 
34 // NOT Singleton. Started per-user.
35 /** */
36 public class NotificationChannels implements CoreStartable {
37     public static String ALERTS      = "ALR";
38     public static String SCREENSHOTS_HEADSUP = "SCN_HEADSUP";
39     // Deprecated. Please use or create a more specific channel that users will better understand
40     @Deprecated
41     static String GENERAL     = "GEN";
42     public static String STORAGE     = "DSK";
43     public static String BATTERY     = "BAT";
44     public static String TVPIP       = TvPipNotificationController.NOTIFICATION_CHANNEL; // "TVPIP"
45     public static String HINTS       = "HNT";
46     public static String INSTANT     = "INS";
47     public static String SETUP       = "STP";
48 
49     private final Context mContext;
50 
51     @Inject
NotificationChannels(Context context)52     public NotificationChannels(Context context) {
53         mContext = context;
54     }
55 
createAll(Context context)56     public static void createAll(Context context) {
57         final NotificationManager nm = context.getSystemService(NotificationManager.class);
58         final NotificationChannel batteryChannel = new NotificationChannel(BATTERY,
59                 context.getString(R.string.notification_channel_battery),
60                 NotificationManager.IMPORTANCE_MAX);
61         final String soundPath = Settings.Global.getString(context.getContentResolver(),
62                 Settings.Global.LOW_BATTERY_SOUND);
63         batteryChannel.setSound(Uri.parse("file://" + soundPath), new AudioAttributes.Builder()
64                 .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
65                 .setUsage(AudioAttributes.USAGE_NOTIFICATION_EVENT)
66                 .build());
67         batteryChannel.setBlockable(true);
68 
69         final NotificationChannel alerts = new NotificationChannel(
70                 ALERTS,
71                 context.getString(R.string.notification_channel_alerts),
72                 NotificationManager.IMPORTANCE_HIGH);
73 
74         final NotificationChannel instant = new NotificationChannel(
75                 INSTANT,
76                 context.getString(R.string.notification_channel_instant),
77                 NotificationManager.IMPORTANCE_MIN);
78 
79         final NotificationChannel setup = new NotificationChannel(
80                 SETUP,
81                 context.getString(R.string.notification_channel_setup),
82                 NotificationManager.IMPORTANCE_DEFAULT);
83         setup.setSound(null, null);
84 
85         final NotificationChannel storage = new NotificationChannel(
86                 STORAGE,
87                 context.getString(R.string.notification_channel_storage),
88                 isTv(context)
89                         ? NotificationManager.IMPORTANCE_DEFAULT
90                         : NotificationManager.IMPORTANCE_LOW);
91 
92         final NotificationChannel hint = new NotificationChannel(
93                 HINTS,
94                 context.getString(R.string.notification_channel_hints),
95                 NotificationManager.IMPORTANCE_DEFAULT);
96         // No need to bypass DND.
97 
98         nm.createNotificationChannels(Arrays.asList(
99                 alerts,
100                 instant,
101                 setup,
102                 storage,
103                 createScreenshotChannel(
104                         context.getString(R.string.notification_channel_screenshot)),
105                 batteryChannel,
106                 hint
107         ));
108 
109         if (isTv(context)) {
110             // TV specific notification channel for TV PIP controls.
111             // Importance should be {@link NotificationManager#IMPORTANCE_MAX} to have the highest
112             // priority, so it can be shown in all times.
113             nm.createNotificationChannel(new NotificationChannel(
114                     TVPIP,
115                     context.getString(com.android.wm.shell.R.string.notification_channel_tv_pip),
116                     NotificationManager.IMPORTANCE_MAX));
117         }
118     }
119 
120     /**
121      * Set up screenshot channel, respecting any previously committed user settings on legacy
122      * channel.
123      * @return
124      */
createScreenshotChannel( String name)125     @VisibleForTesting static NotificationChannel createScreenshotChannel(
126             String name) {
127         NotificationChannel screenshotChannel = new NotificationChannel(SCREENSHOTS_HEADSUP,
128                 name, NotificationManager.IMPORTANCE_HIGH); // pop on screen
129 
130         screenshotChannel.setSound(null, // silent
131                 new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
132         screenshotChannel.setBlockable(true);
133 
134         return screenshotChannel;
135     }
136 
137     @Override
start()138     public void start() {
139         createAll(mContext);
140         cleanUp();
141     }
142 
cleanUp()143     private void cleanUp() {
144         mContext.getSystemService(NotificationManager.class).deleteNotificationChannel(GENERAL);
145     }
146 
isTv(Context context)147     private static boolean isTv(Context context) {
148         PackageManager packageManager = context.getPackageManager();
149         return packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK);
150     }
151 }
152