1 /*
2  * Copyright (C) 2014 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.systemui;
18 
19 import android.app.ActivityThread;
20 import android.app.Application;
21 import android.content.BroadcastReceiver;
22 import android.content.Context;
23 import android.content.Intent;
24 import android.content.IntentFilter;
25 import android.content.pm.ApplicationInfo;
26 import android.content.res.Configuration;
27 import android.os.Process;
28 import android.os.SystemProperties;
29 import android.os.UserHandle;
30 import android.util.ArraySet;
31 import android.util.Log;
32 
33 import com.android.systemui.fragments.FragmentService;
34 import com.android.systemui.globalactions.GlobalActionsComponent;
35 import com.android.systemui.keyboard.KeyboardUI;
36 import com.android.systemui.keyguard.KeyguardViewMediator;
37 import com.android.systemui.media.RingtonePlayer;
38 import com.android.systemui.pip.PipUI;
39 import com.android.systemui.plugins.GlobalActions;
40 import com.android.systemui.plugins.OverlayPlugin;
41 import com.android.systemui.plugins.Plugin;
42 import com.android.systemui.plugins.PluginListener;
43 import com.android.systemui.plugins.PluginManager;
44 import com.android.systemui.power.PowerUI;
45 import com.android.systemui.recents.Recents;
46 import com.android.systemui.shortcut.ShortcutKeyDispatcher;
47 import com.android.systemui.stackdivider.Divider;
48 import com.android.systemui.statusbar.CommandQueue;
49 import com.android.systemui.statusbar.phone.StatusBar;
50 import com.android.systemui.statusbar.phone.StatusBarWindowManager;
51 import com.android.systemui.tuner.TunerService;
52 import com.android.systemui.usb.StorageNotification;
53 import com.android.systemui.util.NotificationChannels;
54 import com.android.systemui.util.leak.GarbageMonitor;
55 import com.android.systemui.volume.VolumeUI;
56 
57 import java.util.HashMap;
58 import java.util.Map;
59 
60 /**
61  * Application class for SystemUI.
62  */
63 public class SystemUIApplication extends Application implements SysUiServiceProvider {
64 
65     private static final String TAG = "SystemUIService";
66     private static final boolean DEBUG = false;
67 
68     /**
69      * The classes of the stuff to start.
70      */
71     private final Class<?>[] SERVICES = new Class[] {
72             Dependency.class,
73             NotificationChannels.class,
74             CommandQueue.CommandQueueStart.class,
75             KeyguardViewMediator.class,
76             Recents.class,
77             VolumeUI.class,
78             Divider.class,
79             SystemBars.class,
80             StorageNotification.class,
81             PowerUI.class,
82             RingtonePlayer.class,
83             KeyboardUI.class,
84             PipUI.class,
85             ShortcutKeyDispatcher.class,
86             VendorServices.class,
87             GarbageMonitor.Service.class,
88             LatencyTester.class,
89             GlobalActionsComponent.class,
90     };
91 
92     /**
93      * The classes of the stuff to start for each user.  This is a subset of the services listed
94      * above.
95      */
96     private final Class<?>[] SERVICES_PER_USER = new Class[] {
97             Dependency.class,
98             NotificationChannels.class,
99             Recents.class
100     };
101 
102     /**
103      * Hold a reference on the stuff we start.
104      */
105     private final SystemUI[] mServices = new SystemUI[SERVICES.length];
106     private boolean mServicesStarted;
107     private boolean mBootCompleted;
108     private final Map<Class<?>, Object> mComponents = new HashMap<>();
109 
110     @Override
onCreate()111     public void onCreate() {
112         super.onCreate();
113         // Set the application theme that is inherited by all services. Note that setting the
114         // application theme in the manifest does only work for activities. Keep this in sync with
115         // the theme set there.
116         setTheme(R.style.systemui_theme);
117 
118         SystemUIFactory.createFromConfig(this);
119 
120         if (Process.myUserHandle().equals(UserHandle.SYSTEM)) {
121             IntentFilter filter = new IntentFilter(Intent.ACTION_BOOT_COMPLETED);
122             filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
123             registerReceiver(new BroadcastReceiver() {
124                 @Override
125                 public void onReceive(Context context, Intent intent) {
126                     if (mBootCompleted) return;
127 
128                     if (DEBUG) Log.v(TAG, "BOOT_COMPLETED received");
129                     unregisterReceiver(this);
130                     mBootCompleted = true;
131                     if (mServicesStarted) {
132                         final int N = mServices.length;
133                         for (int i = 0; i < N; i++) {
134                             mServices[i].onBootCompleted();
135                         }
136                     }
137                 }
138             }, filter);
139         } else {
140             // We don't need to startServices for sub-process that is doing some tasks.
141             // (screenshots, sweetsweetdesserts or tuner ..)
142             String processName = ActivityThread.currentProcessName();
143             ApplicationInfo info = getApplicationInfo();
144             if (processName != null && processName.startsWith(info.processName + ":")) {
145                 return;
146             }
147             // For a secondary user, boot-completed will never be called because it has already
148             // been broadcasted on startup for the primary SystemUI process.  Instead, for
149             // components which require the SystemUI component to be initialized per-user, we
150             // start those components now for the current non-system user.
151             startServicesIfNeeded(SERVICES_PER_USER);
152         }
153     }
154 
155     /**
156      * Makes sure that all the SystemUI services are running. If they are already running, this is a
157      * no-op. This is needed to conditinally start all the services, as we only need to have it in
158      * the main process.
159      * <p>This method must only be called from the main thread.</p>
160      */
161 
startServicesIfNeeded()162     public void startServicesIfNeeded() {
163         startServicesIfNeeded(SERVICES);
164     }
165 
166     /**
167      * Ensures that all the Secondary user SystemUI services are running. If they are already
168      * running, this is a no-op. This is needed to conditinally start all the services, as we only
169      * need to have it in the main process.
170      * <p>This method must only be called from the main thread.</p>
171      */
startSecondaryUserServicesIfNeeded()172     void startSecondaryUserServicesIfNeeded() {
173         startServicesIfNeeded(SERVICES_PER_USER);
174     }
175 
startServicesIfNeeded(Class<?>[] services)176     private void startServicesIfNeeded(Class<?>[] services) {
177         if (mServicesStarted) {
178             return;
179         }
180 
181         if (!mBootCompleted) {
182             // check to see if maybe it was already completed long before we began
183             // see ActivityManagerService.finishBooting()
184             if ("1".equals(SystemProperties.get("sys.boot_completed"))) {
185                 mBootCompleted = true;
186                 if (DEBUG) Log.v(TAG, "BOOT_COMPLETED was already sent");
187             }
188         }
189 
190         Log.v(TAG, "Starting SystemUI services for user " +
191                 Process.myUserHandle().getIdentifier() + ".");
192         final int N = services.length;
193         for (int i = 0; i < N; i++) {
194             Class<?> cl = services[i];
195             if (DEBUG) Log.d(TAG, "loading: " + cl);
196             try {
197                 Object newService = SystemUIFactory.getInstance().createInstance(cl);
198                 mServices[i] = (SystemUI) ((newService == null) ? cl.newInstance() : newService);
199             } catch (IllegalAccessException ex) {
200                 throw new RuntimeException(ex);
201             } catch (InstantiationException ex) {
202                 throw new RuntimeException(ex);
203             }
204 
205             mServices[i].mContext = this;
206             mServices[i].mComponents = mComponents;
207             if (DEBUG) Log.d(TAG, "running: " + mServices[i]);
208             mServices[i].start();
209 
210             if (mBootCompleted) {
211                 mServices[i].onBootCompleted();
212             }
213         }
214         Dependency.get(PluginManager.class).addPluginListener(
215                 new PluginListener<OverlayPlugin>() {
216                     private ArraySet<OverlayPlugin> mOverlays;
217 
218                     @Override
219                     public void onPluginConnected(OverlayPlugin plugin, Context pluginContext) {
220                         StatusBar statusBar = getComponent(StatusBar.class);
221                         if (statusBar != null) {
222                             plugin.setup(statusBar.getStatusBarWindow(),
223                                     statusBar.getNavigationBarView());
224                         }
225                         // Lazy init.
226                         if (mOverlays == null) mOverlays = new ArraySet<>();
227                         if (plugin.holdStatusBarOpen()) {
228                             mOverlays.add(plugin);
229                             Dependency.get(StatusBarWindowManager.class).setStateListener(b ->
230                                     mOverlays.forEach(o -> o.setCollapseDesired(b)));
231                             Dependency.get(StatusBarWindowManager.class).setForcePluginOpen(
232                                     mOverlays.size() != 0);
233 
234                         }
235                     }
236 
237                     @Override
238                     public void onPluginDisconnected(OverlayPlugin plugin) {
239                         mOverlays.remove(plugin);
240                         Dependency.get(StatusBarWindowManager.class).setForcePluginOpen(
241                                 mOverlays.size() != 0);
242                     }
243                 }, OverlayPlugin.class, true /* Allow multiple plugins */);
244 
245         mServicesStarted = true;
246     }
247 
248     @Override
onConfigurationChanged(Configuration newConfig)249     public void onConfigurationChanged(Configuration newConfig) {
250         if (mServicesStarted) {
251             int len = mServices.length;
252             for (int i = 0; i < len; i++) {
253                 if (mServices[i] != null) {
254                     mServices[i].onConfigurationChanged(newConfig);
255                 }
256             }
257         }
258     }
259 
260     @SuppressWarnings("unchecked")
getComponent(Class<T> interfaceType)261     public <T> T getComponent(Class<T> interfaceType) {
262         return (T) mComponents.get(interfaceType);
263     }
264 
getServices()265     public SystemUI[] getServices() {
266         return mServices;
267     }
268 }
269