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
17package com.android.systemui;
18
19import android.app.ActivityThread;
20import android.app.Application;
21import android.content.BroadcastReceiver;
22import android.content.Context;
23import android.content.Intent;
24import android.content.IntentFilter;
25import android.content.pm.ApplicationInfo;
26import android.content.res.Configuration;
27import android.os.Process;
28import android.os.SystemProperties;
29import android.os.UserHandle;
30import android.util.ArraySet;
31import android.util.Log;
32
33import com.android.systemui.fragments.FragmentService;
34import com.android.systemui.globalactions.GlobalActionsComponent;
35import com.android.systemui.keyboard.KeyboardUI;
36import com.android.systemui.keyguard.KeyguardViewMediator;
37import com.android.systemui.media.RingtonePlayer;
38import com.android.systemui.pip.PipUI;
39import com.android.systemui.plugins.GlobalActions;
40import com.android.systemui.plugins.OverlayPlugin;
41import com.android.systemui.plugins.Plugin;
42import com.android.systemui.plugins.PluginListener;
43import com.android.systemui.plugins.PluginManager;
44import com.android.systemui.power.PowerUI;
45import com.android.systemui.recents.Recents;
46import com.android.systemui.shortcut.ShortcutKeyDispatcher;
47import com.android.systemui.stackdivider.Divider;
48import com.android.systemui.statusbar.CommandQueue;
49import com.android.systemui.statusbar.phone.StatusBar;
50import com.android.systemui.statusbar.phone.StatusBarWindowManager;
51import com.android.systemui.tuner.TunerService;
52import com.android.systemui.usb.StorageNotification;
53import com.android.systemui.util.NotificationChannels;
54import com.android.systemui.util.leak.GarbageMonitor;
55import com.android.systemui.volume.VolumeUI;
56
57import java.util.HashMap;
58import java.util.Map;
59
60/**
61 * Application class for SystemUI.
62 */
63public 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
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
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     */
172    void startSecondaryUserServicesIfNeeded() {
173        startServicesIfNeeded(SERVICES_PER_USER);
174    }
175
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
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")
261    public <T> T getComponent(Class<T> interfaceType) {
262        return (T) mComponents.get(interfaceType);
263    }
264
265    public SystemUI[] getServices() {
266        return mServices;
267    }
268}
269