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.R;
27 import com.android.systemui.SystemUI;
28 
29 import java.util.Arrays;
30 
31 public class NotificationChannels extends SystemUI {
32     public static String ALERTS      = "ALR";
33     public static String SCREENSHOTS_LEGACY = "SCN";
34     public static String SCREENSHOTS_HEADSUP = "SCN_HEADSUP";
35     public static String GENERAL     = "GEN";
36     public static String STORAGE     = "DSK";
37     public static String TVPIP       = "TPP";
38     public static String BATTERY     = "BAT";
39     public static String HINTS       = "HNT";
40 
createAll(Context context)41     public static void createAll(Context context) {
42         final NotificationManager nm = context.getSystemService(NotificationManager.class);
43         final NotificationChannel batteryChannel = new NotificationChannel(BATTERY,
44                 context.getString(R.string.notification_channel_battery),
45                 NotificationManager.IMPORTANCE_MAX);
46         final String soundPath = Settings.Global.getString(context.getContentResolver(),
47                 Settings.Global.LOW_BATTERY_SOUND);
48         batteryChannel.setSound(Uri.parse("file://" + soundPath), new AudioAttributes.Builder()
49                 .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
50                 .setUsage(AudioAttributes.USAGE_NOTIFICATION_EVENT)
51                 .build());
52         batteryChannel.setBlockableSystem(true);
53 
54         final NotificationChannel alerts = new NotificationChannel(
55                 ALERTS,
56                 context.getString(R.string.notification_channel_alerts),
57                 NotificationManager.IMPORTANCE_HIGH);
58 
59         final NotificationChannel general = new NotificationChannel(
60                 GENERAL,
61                 context.getString(R.string.notification_channel_general),
62                 NotificationManager.IMPORTANCE_MIN);
63 
64         final NotificationChannel storage = new NotificationChannel(
65                 STORAGE,
66                 context.getString(R.string.notification_channel_storage),
67                 isTv(context)
68                         ? NotificationManager.IMPORTANCE_DEFAULT
69                         : NotificationManager.IMPORTANCE_LOW);
70 
71         final NotificationChannel hint = new NotificationChannel(
72                 HINTS,
73                 context.getString(R.string.notification_channel_hints),
74                 NotificationManager.IMPORTANCE_DEFAULT);
75         // No need to bypass DND.
76 
77         nm.createNotificationChannels(Arrays.asList(
78                 alerts,
79                 general,
80                 storage,
81                 createScreenshotChannel(
82                         context.getString(R.string.notification_channel_screenshot),
83                         nm.getNotificationChannel(SCREENSHOTS_LEGACY)),
84                 batteryChannel,
85                 hint
86         ));
87 
88         // Delete older SS channel if present.
89         // Screenshots promoted to heads-up in P, this cleans up the lower priority channel from O.
90         // This line can be deleted in Q.
91         nm.deleteNotificationChannel(SCREENSHOTS_LEGACY);
92 
93 
94         if (isTv(context)) {
95             // TV specific notification channel for TV PIP controls.
96             // Importance should be {@link NotificationManager#IMPORTANCE_MAX} to have the highest
97             // priority, so it can be shown in all times.
98             nm.createNotificationChannel(new NotificationChannel(
99                     TVPIP,
100                     context.getString(R.string.notification_channel_tv_pip),
101                     NotificationManager.IMPORTANCE_MAX));
102         }
103     }
104 
105     /**
106      * Set up screenshot channel, respecting any previously committed user settings on legacy
107      * channel.
108      * @return
109      */
createScreenshotChannel( String name, NotificationChannel legacySS)110     @VisibleForTesting static NotificationChannel createScreenshotChannel(
111             String name, NotificationChannel legacySS) {
112         NotificationChannel screenshotChannel = new NotificationChannel(SCREENSHOTS_HEADSUP,
113                 name, NotificationManager.IMPORTANCE_HIGH); // pop on screen
114 
115         screenshotChannel.setSound(null, // silent
116                 new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
117         screenshotChannel.setBlockableSystem(true);
118 
119         if (legacySS != null) {
120             // Respect any user modified fields from the old channel.
121             int userlock = legacySS.getUserLockedFields();
122             if ((userlock & NotificationChannel.USER_LOCKED_IMPORTANCE) != 0) {
123                 screenshotChannel.setImportance(legacySS.getImportance());
124             }
125             if ((userlock & NotificationChannel.USER_LOCKED_SOUND) != 0)  {
126                 screenshotChannel.setSound(legacySS.getSound(), legacySS.getAudioAttributes());
127             }
128             if ((userlock & NotificationChannel.USER_LOCKED_VIBRATION) != 0)  {
129                 screenshotChannel.setVibrationPattern(legacySS.getVibrationPattern());
130             }
131             if ((userlock & NotificationChannel.USER_LOCKED_LIGHTS) != 0)  {
132                 screenshotChannel.setLightColor(legacySS.getLightColor());
133             }
134             // skip show_badge, irrelevant for system channel
135         }
136 
137         return screenshotChannel;
138     }
139 
140     @Override
start()141     public void start() {
142         createAll(mContext);
143     }
144 
isTv(Context context)145     private static boolean isTv(Context context) {
146         PackageManager packageManager = context.getPackageManager();
147         return packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK);
148     }
149 }
150