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 
20 import android.content.Context;
21 import android.content.pm.PackageManager;
22 import android.media.AudioAttributes;
23 import android.net.Uri;
24 import android.provider.Settings;
25 
26 import com.android.internal.annotations.VisibleForTesting;
27 import com.android.systemui.R;
28 import com.android.systemui.SystemUI;
29 
30 import java.util.Arrays;
31 
32 public class NotificationChannels extends SystemUI {
33     public static String ALERTS      = "ALR";
34     public static String SCREENSHOTS_LEGACY = "SCN";
35     public static String SCREENSHOTS_HEADSUP = "SCN_HEADSUP";
36     public static String GENERAL     = "GEN";
37     public static String STORAGE     = "DSK";
38     public static String TVPIP       = "TPP";
39     public static String BATTERY     = "BAT";
40     public static String HINTS       = "HNT";
41 
createAll(Context context)42     public static void createAll(Context context) {
43         final NotificationManager nm = context.getSystemService(NotificationManager.class);
44         final NotificationChannel batteryChannel = new NotificationChannel(BATTERY,
45                 context.getString(R.string.notification_channel_battery),
46                 NotificationManager.IMPORTANCE_MAX);
47         final String soundPath = Settings.Global.getString(context.getContentResolver(),
48                 Settings.Global.LOW_BATTERY_SOUND);
49         batteryChannel.setSound(Uri.parse("file://" + soundPath), new AudioAttributes.Builder()
50                 .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
51                 .setUsage(AudioAttributes.USAGE_NOTIFICATION_EVENT)
52                 .build());
53         batteryChannel.setBlockableSystem(true);
54 
55         final NotificationChannel alerts = new NotificationChannel(
56                 ALERTS,
57                 context.getString(R.string.notification_channel_alerts),
58                 NotificationManager.IMPORTANCE_HIGH);
59 
60         final NotificationChannel general = new NotificationChannel(
61                 GENERAL,
62                 context.getString(R.string.notification_channel_general),
63                 NotificationManager.IMPORTANCE_MIN);
64 
65         final NotificationChannel storage = new NotificationChannel(
66                 STORAGE,
67                 context.getString(R.string.notification_channel_storage),
68                 isTv(context)
69                         ? NotificationManager.IMPORTANCE_DEFAULT
70                         : NotificationManager.IMPORTANCE_LOW);
71 
72         final NotificationChannel hint = new NotificationChannel(
73                 HINTS,
74                 context.getString(R.string.notification_channel_hints),
75                 NotificationManager.IMPORTANCE_DEFAULT);
76         // No need to bypass DND.
77 
78         nm.createNotificationChannels(Arrays.asList(
79                 alerts,
80                 general,
81                 storage,
82                 createScreenshotChannel(
83                         context.getString(R.string.notification_channel_screenshot),
84                         nm.getNotificationChannel(SCREENSHOTS_LEGACY)),
85                 batteryChannel,
86                 hint
87         ));
88 
89         // Delete older SS channel if present.
90         // Screenshots promoted to heads-up in P, this cleans up the lower priority channel from O.
91         // This line can be deleted in Q.
92         nm.deleteNotificationChannel(SCREENSHOTS_LEGACY);
93 
94 
95         if (isTv(context)) {
96             // TV specific notification channel for TV PIP controls.
97             // Importance should be {@link NotificationManager#IMPORTANCE_MAX} to have the highest
98             // priority, so it can be shown in all times.
99             nm.createNotificationChannel(new NotificationChannel(
100                     TVPIP,
101                     context.getString(R.string.notification_channel_tv_pip),
102                     NotificationManager.IMPORTANCE_MAX));
103         }
104     }
105 
106     /**
107      * Set up screenshot channel, respecting any previously committed user settings on legacy
108      * channel.
109      * @return
110      */
createScreenshotChannel( String name, NotificationChannel legacySS)111     @VisibleForTesting static NotificationChannel createScreenshotChannel(
112             String name, NotificationChannel legacySS) {
113         NotificationChannel screenshotChannel = new NotificationChannel(SCREENSHOTS_HEADSUP,
114                 name, NotificationManager.IMPORTANCE_HIGH); // pop on screen
115 
116         screenshotChannel.setSound(Uri.parse(""), // silent
117                 new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_NOTIFICATION).build());
118         screenshotChannel.setBlockableSystem(true);
119 
120         if (legacySS != null) {
121             // Respect any user modified fields from the old channel.
122             int userlock = legacySS.getUserLockedFields();
123             if ((userlock & NotificationChannel.USER_LOCKED_IMPORTANCE) != 0) {
124                 screenshotChannel.setImportance(legacySS.getImportance());
125             }
126             if ((userlock & NotificationChannel.USER_LOCKED_SOUND) != 0)  {
127                 screenshotChannel.setSound(legacySS.getSound(), legacySS.getAudioAttributes());
128             }
129             if ((userlock & NotificationChannel.USER_LOCKED_VIBRATION) != 0)  {
130                 screenshotChannel.setVibrationPattern(legacySS.getVibrationPattern());
131             }
132             if ((userlock & NotificationChannel.USER_LOCKED_LIGHTS) != 0)  {
133                 screenshotChannel.setLightColor(legacySS.getLightColor());
134             }
135             // skip show_badge, irrelevant for system channel
136         }
137 
138         return screenshotChannel;
139     }
140 
141     @Override
start()142     public void start() {
143         createAll(mContext);
144     }
145 
isTv(Context context)146     private static boolean isTv(Context context) {
147         PackageManager packageManager = context.getPackageManager();
148         return packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK);
149     }
150 }
151