Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 android.service.dreams; |
| 18 | |
| 19 | import android.content.ComponentName; |
| 20 | import android.content.Context; |
| 21 | import android.content.Intent; |
| 22 | import android.os.PowerManager; |
| 23 | import android.os.RemoteException; |
| 24 | import android.os.ServiceManager; |
| 25 | import android.os.SystemClock; |
| 26 | import android.os.UserHandle; |
| 27 | import android.provider.Settings; |
| 28 | import android.util.Slog; |
| 29 | |
| 30 | /** |
| 31 | * Internal helper for launching dreams to ensure consistency between the |
| 32 | * <code>UiModeManagerService</code> system service and the <code>Somnambulator</code> activity. |
| 33 | * |
| 34 | * @hide |
| 35 | */ |
| 36 | public final class Sandman { |
| 37 | private static final String TAG = "Sandman"; |
| 38 | |
Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 39 | // The component name of a special dock app that merely launches a dream. |
| 40 | // We don't want to launch this app when docked because it causes an unnecessary |
| 41 | // activity transition. We just want to start the dream. |
| 42 | private static final ComponentName SOMNAMBULATOR_COMPONENT = |
| 43 | new ComponentName("com.android.systemui", "com.android.systemui.Somnambulator"); |
| 44 | |
| 45 | |
| 46 | // The sandman is eternal. No one instantiates him. |
| 47 | private Sandman() { |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Returns true if the specified dock app intent should be started. |
| 52 | * False if we should dream instead, if appropriate. |
| 53 | */ |
| 54 | public static boolean shouldStartDockApp(Context context, Intent intent) { |
| 55 | ComponentName name = intent.resolveActivity(context.getPackageManager()); |
| 56 | return name != null && !name.equals(SOMNAMBULATOR_COMPONENT); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Starts a dream manually. |
| 61 | */ |
| 62 | public static void startDreamByUserRequest(Context context) { |
| 63 | startDream(context, false); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Starts a dream when docked if the system has been configured to do so, |
| 68 | * otherwise does nothing. |
| 69 | */ |
| 70 | public static void startDreamWhenDockedIfAppropriate(Context context) { |
| 71 | if (!isScreenSaverEnabled(context) |
| 72 | || !isScreenSaverActivatedOnDock(context)) { |
| 73 | Slog.i(TAG, "Dreams currently disabled for docks."); |
| 74 | return; |
| 75 | } |
| 76 | |
| 77 | startDream(context, true); |
| 78 | } |
| 79 | |
| 80 | private static void startDream(Context context, boolean docked) { |
| 81 | try { |
| 82 | IDreamManager dreamManagerService = IDreamManager.Stub.asInterface( |
| 83 | ServiceManager.getService(DreamService.DREAM_SERVICE)); |
| 84 | if (dreamManagerService != null && !dreamManagerService.isDreaming()) { |
| 85 | if (docked) { |
| 86 | Slog.i(TAG, "Activating dream while docked."); |
| 87 | |
| 88 | // Wake up. |
| 89 | // The power manager will wake up the system automatically when it starts |
| 90 | // receiving power from a dock but there is a race between that happening |
| 91 | // and the UI mode manager starting a dream. We want the system to already |
| 92 | // be awake by the time this happens. Otherwise the dream may not start. |
| 93 | PowerManager powerManager = |
| 94 | (PowerManager)context.getSystemService(Context.POWER_SERVICE); |
Dianne Hackborn | 280a64e | 2015-07-13 14:48:08 -0700 | [diff] [blame] | 95 | powerManager.wakeUp(SystemClock.uptimeMillis(), |
| 96 | "android.service.dreams:DREAM"); |
Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 97 | } else { |
| 98 | Slog.i(TAG, "Activating dream by user request."); |
| 99 | } |
| 100 | |
| 101 | // Dream. |
| 102 | dreamManagerService.dream(); |
| 103 | } |
| 104 | } catch (RemoteException ex) { |
| 105 | Slog.e(TAG, "Could not start dream when docked.", ex); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | private static boolean isScreenSaverEnabled(Context context) { |
John Spurlock | ed108f3 | 2012-10-18 16:49:24 -0400 | [diff] [blame] | 110 | int def = context.getResources().getBoolean( |
| 111 | com.android.internal.R.bool.config_dreamsEnabledByDefault) ? 1 : 0; |
Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 112 | return Settings.Secure.getIntForUser(context.getContentResolver(), |
John Spurlock | ed108f3 | 2012-10-18 16:49:24 -0400 | [diff] [blame] | 113 | Settings.Secure.SCREENSAVER_ENABLED, def, |
Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 114 | UserHandle.USER_CURRENT) != 0; |
| 115 | } |
| 116 | |
| 117 | private static boolean isScreenSaverActivatedOnDock(Context context) { |
John Spurlock | ed108f3 | 2012-10-18 16:49:24 -0400 | [diff] [blame] | 118 | int def = context.getResources().getBoolean( |
| 119 | com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault) ? 1 : 0; |
Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 120 | return Settings.Secure.getIntForUser(context.getContentResolver(), |
John Spurlock | ed108f3 | 2012-10-18 16:49:24 -0400 | [diff] [blame] | 121 | Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, def, |
| 122 | UserHandle.USER_CURRENT) != 0; |
Jeff Brown | 11159e9 | 2012-10-11 15:58:37 -0700 | [diff] [blame] | 123 | } |
| 124 | } |