/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server.policy;

import static android.Manifest.permission.INTERNAL_SYSTEM_WINDOW;
import static android.Manifest.permission.SYSTEM_ALERT_WINDOW;
import static android.app.AppOpsManager.OP_SYSTEM_ALERT_WINDOW;
import static android.app.AppOpsManager.OP_TOAST_WINDOW;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_STANDARD;
import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_SECONDARY;
import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
import static android.content.Context.CONTEXT_RESTRICTED;
import static android.content.Context.DISPLAY_SERVICE;
import static android.content.Context.WINDOW_SERVICE;
import static android.content.pm.PackageManager.FEATURE_LEANBACK;
import static android.content.pm.PackageManager.FEATURE_PICTURE_IN_PICTURE;
import static android.content.pm.PackageManager.FEATURE_WATCH;
import static android.content.pm.PackageManager.PERMISSION_GRANTED;
import static android.content.res.Configuration.EMPTY;
import static android.content.res.Configuration.UI_MODE_TYPE_CAR;
import static android.content.res.Configuration.UI_MODE_TYPE_MASK;
import static android.os.Build.VERSION_CODES.M;
import static android.os.Build.VERSION_CODES.O;
import static android.provider.Settings.Secure.VOLUME_HUSH_OFF;
import static android.view.Display.DEFAULT_DISPLAY;
import static android.view.Display.STATE_OFF;
import static android.view.WindowManager.DOCKED_LEFT;
import static android.view.WindowManager.DOCKED_RIGHT;
import static android.view.WindowManager.DOCKED_TOP;
import static android.view.WindowManager.INPUT_CONSUMER_NAVIGATION;
import static android.view.WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW;
import static android.view.WindowManager.LayoutParams.FIRST_SUB_WINDOW;
import static android.view.WindowManager.LayoutParams.FIRST_SYSTEM_WINDOW;
import static android.view.WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON;
import static android.view.WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS;
import static android.view.WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN;
import static android.view.WindowManager.LayoutParams.FLAG_FULLSCREEN;
import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_ATTACHED_IN_DECOR;
import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR;
import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN;
import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS;
import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
import static android.view.WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
import static android.view.WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
import static android.view.WindowManager.LayoutParams.LAST_APPLICATION_WINDOW;
import static android.view.WindowManager.LayoutParams.LAST_SUB_WINDOW;
import static android.view.WindowManager.LayoutParams.LAST_SYSTEM_WINDOW;
import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_DEFAULT;
import static android.view.WindowManager.LayoutParams.MATCH_PARENT;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_ACQUIRES_SLEEP_TOKEN;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DRAW_STATUS_BAR_BACKGROUND;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_STATUS_BAR_VISIBLE_TRANSPARENT;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_INHERIT_TRANSLUCENT_DECOR;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_IS_ROUNDED_CORNERS_OVERLAY;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_IS_SCREEN_DECOR;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_SYSTEM_ERROR;
import static android.view.WindowManager.LayoutParams.ROTATION_ANIMATION_CROSSFADE;
import static android.view.WindowManager.LayoutParams.ROTATION_ANIMATION_JUMPCUT;
import static android.view.WindowManager.LayoutParams.ROTATION_ANIMATION_ROTATE;
import static android.view.WindowManager.LayoutParams.ROTATION_ANIMATION_SEAMLESS;
import static android.view.WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING;
import static android.view.WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
import static android.view.WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST;
import static android.view.WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_STARTING;
import static android.view.WindowManager.LayoutParams.TYPE_BASE_APPLICATION;
import static android.view.WindowManager.LayoutParams.TYPE_BOOT_PROGRESS;
import static android.view.WindowManager.LayoutParams.TYPE_DISPLAY_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
import static android.view.WindowManager.LayoutParams.TYPE_DREAM;
import static android.view.WindowManager.LayoutParams.TYPE_INPUT_CONSUMER;
import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD;
import static android.view.WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG;
import static android.view.WindowManager.LayoutParams.TYPE_MAGNIFICATION_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR;
import static android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL;
import static android.view.WindowManager.LayoutParams.TYPE_PHONE;
import static android.view.WindowManager.LayoutParams.TYPE_POINTER;
import static android.view.WindowManager.LayoutParams.TYPE_PRESENTATION;
import static android.view.WindowManager.LayoutParams.TYPE_PRIORITY_PHONE;
import static android.view.WindowManager.LayoutParams.TYPE_PRIVATE_PRESENTATION;
import static android.view.WindowManager.LayoutParams.TYPE_QS_DIALOG;
import static android.view.WindowManager.LayoutParams.TYPE_SCREENSHOT;
import static android.view.WindowManager.LayoutParams.TYPE_SEARCH_BAR;
import static android.view.WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR;
import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL;
import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL;
import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG;
import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_TOAST;
import static android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION;
import static android.view.WindowManager.LayoutParams.TYPE_VOICE_INTERACTION_STARTING;
import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER;
import static android.view.WindowManager.LayoutParams.isSystemAlertWindowType;
import static android.view.WindowManager.TAKE_SCREENSHOT_FULLSCREEN;
import static android.view.WindowManager.TAKE_SCREENSHOT_SELECTED_REGION;
import static android.view.WindowManagerGlobal.ADD_OKAY;
import static android.view.WindowManagerGlobal.ADD_PERMISSION_DENIED;

import static com.android.server.policy.WindowManagerPolicy.WindowManagerFuncs.CAMERA_LENS_COVERED;
import static com.android.server.policy.WindowManagerPolicy.WindowManagerFuncs.CAMERA_LENS_COVER_ABSENT;
import static com.android.server.policy.WindowManagerPolicy.WindowManagerFuncs.CAMERA_LENS_UNCOVERED;
import static com.android.server.policy.WindowManagerPolicy.WindowManagerFuncs.LID_ABSENT;
import static com.android.server.policy.WindowManagerPolicy.WindowManagerFuncs.LID_CLOSED;
import static com.android.server.policy.WindowManagerPolicy.WindowManagerFuncs.LID_OPEN;
import static com.android.server.wm.WindowManagerPolicyProto.FOCUSED_APP_TOKEN;
import static com.android.server.wm.WindowManagerPolicyProto.FOCUSED_WINDOW;
import static com.android.server.wm.WindowManagerPolicyProto.FORCE_STATUS_BAR;
import static com.android.server.wm.WindowManagerPolicyProto.FORCE_STATUS_BAR_FROM_KEYGUARD;
import static com.android.server.wm.WindowManagerPolicyProto.KEYGUARD_DELEGATE;
import static com.android.server.wm.WindowManagerPolicyProto.KEYGUARD_DRAW_COMPLETE;
import static com.android.server.wm.WindowManagerPolicyProto.KEYGUARD_OCCLUDED;
import static com.android.server.wm.WindowManagerPolicyProto.KEYGUARD_OCCLUDED_CHANGED;
import static com.android.server.wm.WindowManagerPolicyProto.KEYGUARD_OCCLUDED_PENDING;
import static com.android.server.wm.WindowManagerPolicyProto.LAST_SYSTEM_UI_FLAGS;
import static com.android.server.wm.WindowManagerPolicyProto.NAVIGATION_BAR;
import static com.android.server.wm.WindowManagerPolicyProto.ORIENTATION;
import static com.android.server.wm.WindowManagerPolicyProto.ORIENTATION_LISTENER;
import static com.android.server.wm.WindowManagerPolicyProto.ROTATION;
import static com.android.server.wm.WindowManagerPolicyProto.ROTATION_MODE;
import static com.android.server.wm.WindowManagerPolicyProto.SCREEN_ON_FULLY;
import static com.android.server.wm.WindowManagerPolicyProto.STATUS_BAR;
import static com.android.server.wm.WindowManagerPolicyProto.TOP_FULLSCREEN_OPAQUE_OR_DIMMING_WINDOW;
import static com.android.server.wm.WindowManagerPolicyProto.TOP_FULLSCREEN_OPAQUE_WINDOW;
import static com.android.server.wm.WindowManagerPolicyProto.WINDOW_MANAGER_DRAW_COMPLETE;

import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.ActivityManagerInternal;
import android.app.ActivityManagerInternal.SleepToken;
import android.app.ActivityThread;
import android.app.AppOpsManager;
import android.app.IUiModeManager;
import android.app.ProgressDialog;
import android.app.SearchManager;
import android.app.StatusBarManager;
import android.app.UiModeManager;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.CompatibilityInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.database.ContentObserver;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.hardware.display.DisplayManager;
import android.hardware.hdmi.HdmiControlManager;
import android.hardware.hdmi.HdmiPlaybackClient;
import android.hardware.hdmi.HdmiPlaybackClient.OneTouchPlayCallback;
import android.hardware.input.InputManager;
import android.hardware.input.InputManagerInternal;
import android.hardware.power.V1_0.PowerHint;
import android.media.AudioAttributes;
import android.media.AudioManager;
import android.media.AudioManagerInternal;
import android.media.AudioSystem;
import android.media.IAudioService;
import android.media.session.MediaSessionLegacyHelper;
import android.os.Binder;
import android.os.Bundle;
import android.os.FactoryTest;
import android.os.Handler;
import android.os.IBinder;
import android.os.IDeviceIdleController;
import android.os.Looper;
import android.os.Message;
import android.os.PowerManager;
import android.os.PowerManagerInternal;
import android.os.Process;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.StrictMode;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UEventObserver;
import android.os.UserHandle;
import android.os.VibrationEffect;
import android.os.Vibrator;
import android.provider.MediaStore;
import android.provider.Settings;
import android.service.dreams.DreamManagerInternal;
import android.service.dreams.DreamService;
import android.service.dreams.IDreamManager;
import android.service.vr.IPersistentVrStateCallbacks;
import android.speech.RecognizerIntent;
import android.telecom.TelecomManager;
import android.util.ArraySet;
import android.util.DisplayMetrics;
import android.util.EventLog;
import android.util.Log;
import android.util.LongSparseArray;
import android.util.MutableBoolean;
import android.util.PrintWriterPrinter;
import android.util.Slog;
import android.util.SparseArray;
import android.util.proto.ProtoOutputStream;
import android.view.Display;
import android.view.DisplayCutout;
import android.view.Gravity;
import android.view.HapticFeedbackConstants;
import android.view.IApplicationToken;
import android.view.IWindowManager;
import android.view.InputChannel;
import android.view.InputDevice;
import android.view.InputEvent;
import android.view.InputEventReceiver;
import android.view.KeyCharacterMap;
import android.view.KeyCharacterMap.FallbackAction;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.PointerIcon;
import android.view.Surface;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.view.WindowManagerGlobal;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.AnimationUtils;
import android.view.autofill.AutofillManagerInternal;
import android.view.inputmethod.InputMethodManagerInternal;

import com.android.internal.R;
import com.android.internal.accessibility.AccessibilityShortcutController;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.policy.IKeyguardDismissCallback;
import com.android.internal.policy.IShortcutService;
import com.android.internal.policy.KeyguardDismissCallback;
import com.android.internal.policy.PhoneWindow;
import com.android.internal.statusbar.IStatusBarService;
import com.android.internal.util.ArrayUtils;
import com.android.internal.util.ScreenshotHelper;
import com.android.internal.util.ScreenShapeHelper;
import com.android.internal.widget.PointerLocationView;
import com.android.server.GestureLauncherService;
import com.android.server.LocalServices;
import com.android.server.SystemServiceManager;
import com.android.server.policy.keyguard.KeyguardServiceDelegate;
import com.android.server.policy.keyguard.KeyguardServiceDelegate.DrawnListener;
import com.android.server.policy.keyguard.KeyguardStateMonitor.StateCallback;
import com.android.server.statusbar.StatusBarManagerInternal;
import com.android.server.vr.VrManagerInternal;
import com.android.server.wm.AppTransition;
import com.android.server.wm.DisplayFrames;
import com.android.server.wm.WindowManagerInternal;
import com.android.server.wm.WindowManagerInternal.AppTransitionListener;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

/**
 * WindowManagerPolicy implementation for the Android phone UI.  This
 * introduces a new method suffix, Lp, for an internal lock of the
 * PhoneWindowManager.  This is used to protect some internal state, and
 * can be acquired with either the Lw and Li lock held, so has the restrictions
 * of both of those when held.
 */
public class PhoneWindowManager implements WindowManagerPolicy {
    static final String TAG = "WindowManager";
    static final boolean DEBUG = false;
    static final boolean localLOGV = false;
    static final boolean DEBUG_INPUT = false;
    static final boolean DEBUG_KEYGUARD = false;
    static final boolean DEBUG_LAYOUT = false;
    static final boolean DEBUG_SPLASH_SCREEN = false;
    static final boolean DEBUG_WAKEUP = false;
    static final boolean SHOW_SPLASH_SCREENS = true;

    // Whether to allow dock apps with METADATA_DOCK_HOME to temporarily take over the Home key.
    // No longer recommended for desk docks;
    static final boolean ENABLE_DESK_DOCK_HOME_CAPTURE = false;

    // Whether to allow devices placed in vr headset viewers to have an alternative Home intent.
    static final boolean ENABLE_VR_HEADSET_HOME_CAPTURE = true;

    static final boolean ALTERNATE_CAR_MODE_NAV_SIZE = false;

    static final int SHORT_PRESS_POWER_NOTHING = 0;
    static final int SHORT_PRESS_POWER_GO_TO_SLEEP = 1;
    static final int SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP = 2;
    static final int SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP_AND_GO_HOME = 3;
    static final int SHORT_PRESS_POWER_GO_HOME = 4;
    static final int SHORT_PRESS_POWER_CLOSE_IME_OR_GO_HOME = 5;

    static final int LONG_PRESS_POWER_NOTHING = 0;
    static final int LONG_PRESS_POWER_GLOBAL_ACTIONS = 1;
    static final int LONG_PRESS_POWER_SHUT_OFF = 2;
    static final int LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM = 3;
    static final int LONG_PRESS_POWER_GO_TO_VOICE_ASSIST = 4;

    static final int VERY_LONG_PRESS_POWER_NOTHING = 0;
    static final int VERY_LONG_PRESS_POWER_GLOBAL_ACTIONS = 1;

    static final int MULTI_PRESS_POWER_NOTHING = 0;
    static final int MULTI_PRESS_POWER_THEATER_MODE = 1;
    static final int MULTI_PRESS_POWER_BRIGHTNESS_BOOST = 2;

    static final int LONG_PRESS_BACK_NOTHING = 0;
    static final int LONG_PRESS_BACK_GO_TO_VOICE_ASSIST = 1;

    // These need to match the documentation/constant in
    // core/res/res/values/config.xml
    static final int LONG_PRESS_HOME_NOTHING = 0;
    static final int LONG_PRESS_HOME_ALL_APPS = 1;
    static final int LONG_PRESS_HOME_ASSIST = 2;
    static final int LAST_LONG_PRESS_HOME_BEHAVIOR = LONG_PRESS_HOME_ASSIST;

    static final int DOUBLE_TAP_HOME_NOTHING = 0;
    static final int DOUBLE_TAP_HOME_RECENT_SYSTEM_UI = 1;

    static final int SHORT_PRESS_WINDOW_NOTHING = 0;
    static final int SHORT_PRESS_WINDOW_PICTURE_IN_PICTURE = 1;

    static final int SHORT_PRESS_SLEEP_GO_TO_SLEEP = 0;
    static final int SHORT_PRESS_SLEEP_GO_TO_SLEEP_AND_GO_HOME = 1;

    static final int PENDING_KEY_NULL = -1;

    // Controls navigation bar opacity depending on which workspace stacks are currently
    // visible.
    // Nav bar is always opaque when either the freeform stack or docked stack is visible.
    static final int NAV_BAR_OPAQUE_WHEN_FREEFORM_OR_DOCKED = 0;
    // Nav bar is always translucent when the freeform stack is visible, otherwise always opaque.
    static final int NAV_BAR_TRANSLUCENT_WHEN_FREEFORM_OPAQUE_OTHERWISE = 1;

    static public final String SYSTEM_DIALOG_REASON_KEY = "reason";
    static public final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions";
    static public final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
    static public final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
    static public final String SYSTEM_DIALOG_REASON_ASSIST = "assist";
    static public final String SYSTEM_DIALOG_REASON_SCREENSHOT = "screenshot";

    /**
     * These are the system UI flags that, when changing, can cause the layout
     * of the screen to change.
     */
    static final int SYSTEM_UI_CHANGING_LAYOUT =
              View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.STATUS_BAR_TRANSLUCENT
            | View.NAVIGATION_BAR_TRANSLUCENT
            | View.STATUS_BAR_TRANSPARENT
            | View.NAVIGATION_BAR_TRANSPARENT;

    private static final AudioAttributes VIBRATION_ATTRIBUTES = new AudioAttributes.Builder()
            .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
            .setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION)
            .build();

    // The panic gesture may become active only after the keyguard is dismissed and the immersive
    // app shows again. If that doesn't happen for 30s we drop the gesture.
    private static final long PANIC_GESTURE_EXPIRATION = 30000;

    private static final String SYSUI_PACKAGE = "com.android.systemui";
    private static final String SYSUI_SCREENSHOT_SERVICE =
            "com.android.systemui.screenshot.TakeScreenshotService";
    private static final String SYSUI_SCREENSHOT_ERROR_RECEIVER =
            "com.android.systemui.screenshot.ScreenshotServiceErrorReceiver";

    /**
     * Keyguard stuff
     */
    private boolean mKeyguardDrawnOnce;

    /* Table of Application Launch keys.  Maps from key codes to intent categories.
     *
     * These are special keys that are used to launch particular kinds of applications,
     * such as a web browser.  HID defines nearly a hundred of them in the Consumer (0x0C)
     * usage page.  We don't support quite that many yet...
     */
    static SparseArray<String> sApplicationLaunchKeyCategories;
    static {
        sApplicationLaunchKeyCategories = new SparseArray<String>();
        sApplicationLaunchKeyCategories.append(
                KeyEvent.KEYCODE_EXPLORER, Intent.CATEGORY_APP_BROWSER);
        sApplicationLaunchKeyCategories.append(
                KeyEvent.KEYCODE_ENVELOPE, Intent.CATEGORY_APP_EMAIL);
        sApplicationLaunchKeyCategories.append(
                KeyEvent.KEYCODE_CONTACTS, Intent.CATEGORY_APP_CONTACTS);
        sApplicationLaunchKeyCategories.append(
                KeyEvent.KEYCODE_CALENDAR, Intent.CATEGORY_APP_CALENDAR);
        sApplicationLaunchKeyCategories.append(
                KeyEvent.KEYCODE_MUSIC, Intent.CATEGORY_APP_MUSIC);
        sApplicationLaunchKeyCategories.append(
                KeyEvent.KEYCODE_CALCULATOR, Intent.CATEGORY_APP_CALCULATOR);
    }

    private static final int USER_ACTIVITY_NOTIFICATION_DELAY = 200;

    /** Amount of time (in milliseconds) to wait for windows drawn before powering on. */
    static final int WAITING_FOR_DRAWN_TIMEOUT = 1000;

    /** Amount of time (in milliseconds) a toast window can be shown. */
    public static final int TOAST_WINDOW_TIMEOUT = 3500; // 3.5 seconds

    /**
     * Lock protecting internal state.  Must not call out into window
     * manager with lock held.  (This lock will be acquired in places
     * where the window manager is calling in with its own lock held.)
     */
    private final Object mLock = new Object();

    Context mContext;
    IWindowManager mWindowManager;
    WindowManagerFuncs mWindowManagerFuncs;
    WindowManagerInternal mWindowManagerInternal;
    PowerManager mPowerManager;
    ActivityManagerInternal mActivityManagerInternal;
    AutofillManagerInternal mAutofillManagerInternal;
    InputManagerInternal mInputManagerInternal;
    InputMethodManagerInternal mInputMethodManagerInternal;
    DreamManagerInternal mDreamManagerInternal;
    PowerManagerInternal mPowerManagerInternal;
    IStatusBarService mStatusBarService;
    StatusBarManagerInternal mStatusBarManagerInternal;
    AudioManagerInternal mAudioManagerInternal;
    boolean mPreloadedRecentApps;
    final Object mServiceAquireLock = new Object();
    Vibrator mVibrator; // Vibrator for giving feedback of orientation changes
    SearchManager mSearchManager;
    AccessibilityManager mAccessibilityManager;
    BurnInProtectionHelper mBurnInProtectionHelper;
    AppOpsManager mAppOpsManager;
    private ScreenshotHelper mScreenshotHelper;
    private boolean mHasFeatureWatch;
    private boolean mHasFeatureLeanback;

    // Assigned on main thread, accessed on UI thread
    volatile VrManagerInternal mVrManagerInternal;

    // Vibrator pattern for haptic feedback of a long press.
    long[] mLongPressVibePattern;

    // Vibrator pattern for a short vibration when tapping on a day/month/year date of a Calendar.
    long[] mCalendarDateVibePattern;

    // Vibrator pattern for haptic feedback during boot when safe mode is enabled.
    long[] mSafeModeEnabledVibePattern;

    /** If true, hitting shift & menu will broadcast Intent.ACTION_BUG_REPORT */
    boolean mEnableShiftMenuBugReports = false;

    /** Controller that supports enabling an AccessibilityService by holding down the volume keys */
    private AccessibilityShortcutController mAccessibilityShortcutController;

    boolean mSafeMode;
    private final ArraySet<WindowState> mScreenDecorWindows = new ArraySet<>();
    WindowState mStatusBar = null;
    private final int[] mStatusBarHeightForRotation = new int[4];
    WindowState mNavigationBar = null;
    boolean mHasNavigationBar = false;
    boolean mNavigationBarCanMove = false; // can the navigation bar ever move to the side?
    @NavigationBarPosition
    int mNavigationBarPosition = NAV_BAR_BOTTOM;
    int[] mNavigationBarHeightForRotationDefault = new int[4];
    int[] mNavigationBarWidthForRotationDefault = new int[4];
    int[] mNavigationBarHeightForRotationInCarMode = new int[4];
    int[] mNavigationBarWidthForRotationInCarMode = new int[4];

    private LongSparseArray<IShortcutService> mShortcutKeyServices = new LongSparseArray<>();

    // Whether to allow dock apps with METADATA_DOCK_HOME to temporarily take over the Home key.
    // This is for car dock and this is updated from resource.
    private boolean mEnableCarDockHomeCapture = true;

    boolean mBootMessageNeedsHiding;
    KeyguardServiceDelegate mKeyguardDelegate;
    private boolean mKeyguardBound;
    final Runnable mWindowManagerDrawCallback = new Runnable() {
        @Override
        public void run() {
            if (DEBUG_WAKEUP) Slog.i(TAG, "All windows ready for display!");
            mHandler.sendEmptyMessage(MSG_WINDOW_MANAGER_DRAWN_COMPLETE);
        }
    };
    final DrawnListener mKeyguardDrawnCallback = new DrawnListener() {
        @Override
        public void onDrawn() {
            if (DEBUG_WAKEUP) Slog.d(TAG, "mKeyguardDelegate.ShowListener.onDrawn.");
            mHandler.sendEmptyMessage(MSG_KEYGUARD_DRAWN_COMPLETE);
        }
    };

    GlobalActions mGlobalActions;
    Handler mHandler;
    WindowState mLastInputMethodWindow = null;
    WindowState mLastInputMethodTargetWindow = null;

    // FIXME This state is shared between the input reader and handler thread.
    // Technically it's broken and buggy but it has been like this for many years
    // and we have not yet seen any problems.  Someday we'll rewrite this logic
    // so that only one thread is involved in handling input policy.  Unfortunately
    // it's on a critical path for power management so we can't just post the work to the
    // handler thread.  We'll need to resolve this someday by teaching the input dispatcher
    // to hold wakelocks during dispatch and eliminating the critical path.
    volatile boolean mPowerKeyHandled;
    volatile boolean mBackKeyHandled;
    volatile boolean mBeganFromNonInteractive;
    volatile int mPowerKeyPressCounter;
    volatile boolean mEndCallKeyHandled;
    volatile boolean mCameraGestureTriggeredDuringGoingToSleep;
    volatile boolean mGoingToSleep;
    volatile boolean mRequestedOrGoingToSleep;
    volatile boolean mRecentsVisible;
    volatile boolean mNavBarVirtualKeyHapticFeedbackEnabled;
    volatile boolean mPictureInPictureVisible;
    // Written by vr manager thread, only read in this class.
    volatile private boolean mPersistentVrModeEnabled;
    volatile private boolean mDismissImeOnBackKeyPressed;

    // Used to hold the last user key used to wake the device.  This helps us prevent up events
    // from being passed to the foregrounded app without a corresponding down event
    volatile int mPendingWakeKey = PENDING_KEY_NULL;

    int mRecentAppsHeldModifiers;
    boolean mLanguageSwitchKeyPressed;

    int mLidState = LID_ABSENT;
    int mCameraLensCoverState = CAMERA_LENS_COVER_ABSENT;
    boolean mHaveBuiltInKeyboard;

    boolean mSystemReady;
    boolean mSystemBooted;
    boolean mHdmiPlugged;
    HdmiControl mHdmiControl;
    IUiModeManager mUiModeManager;
    int mUiMode;
    int mDockMode = Intent.EXTRA_DOCK_STATE_UNDOCKED;
    int mLidOpenRotation;
    int mCarDockRotation;
    int mDeskDockRotation;
    int mUndockedHdmiRotation;
    int mDemoHdmiRotation;
    boolean mDemoHdmiRotationLock;
    int mDemoRotation;
    boolean mDemoRotationLock;

    boolean mWakeGestureEnabledSetting;
    MyWakeGestureListener mWakeGestureListener;

    // Default display does not rotate, apps that require non-default orientation will have to
    // have the orientation emulated.
    private boolean mForceDefaultOrientation = false;

    int mUserRotationMode = WindowManagerPolicy.USER_ROTATION_FREE;
    int mUserRotation = Surface.ROTATION_0;

    boolean mSupportAutoRotation;
    int mAllowAllRotations = -1;
    boolean mCarDockEnablesAccelerometer;
    boolean mDeskDockEnablesAccelerometer;
    int mLidKeyboardAccessibility;
    int mLidNavigationAccessibility;
    boolean mLidControlsScreenLock;
    boolean mLidControlsSleep;
    int mShortPressOnPowerBehavior;
    int mLongPressOnPowerBehavior;
    int mVeryLongPressOnPowerBehavior;
    int mDoublePressOnPowerBehavior;
    int mTriplePressOnPowerBehavior;
    int mLongPressOnBackBehavior;
    int mShortPressOnSleepBehavior;
    int mShortPressOnWindowBehavior;
    volatile boolean mAwake;
    boolean mScreenOnEarly;
    boolean mScreenOnFully;
    ScreenOnListener mScreenOnListener;
    boolean mKeyguardDrawComplete;
    boolean mWindowManagerDrawComplete;
    boolean mOrientationSensorEnabled = false;
    int mCurrentAppOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
    boolean mHasSoftInput = false;
    boolean mTranslucentDecorEnabled = true;
    boolean mUseTvRouting;
    int mVeryLongPressTimeout;
    boolean mAllowStartActivityForLongPressOnPowerDuringSetup;

    private boolean mHandleVolumeKeysInWM;

    int mPointerLocationMode = 0; // guarded by mLock

    // The last window we were told about in focusChanged.
    WindowState mFocusedWindow;
    IApplicationToken mFocusedApp;

    PointerLocationView mPointerLocationView;

    // During layout, the layer at which the doc window is placed.
    int mDockLayer;
    // During layout, this is the layer of the status bar.
    int mStatusBarLayer;
    int mLastSystemUiFlags;
    // Bits that we are in the process of clearing, so we want to prevent
    // them from being set by applications until everything has been updated
    // to have them clear.
    int mResettingSystemUiFlags = 0;
    // Bits that we are currently always keeping cleared.
    int mForceClearedSystemUiFlags = 0;
    int mLastFullscreenStackSysUiFlags;
    int mLastDockedStackSysUiFlags;
    final Rect mNonDockedStackBounds = new Rect();
    final Rect mDockedStackBounds = new Rect();
    final Rect mLastNonDockedStackBounds = new Rect();
    final Rect mLastDockedStackBounds = new Rect();

    // What we last reported to system UI about whether the compatibility
    // menu needs to be displayed.
    boolean mLastFocusNeedsMenu = false;
    // If nonzero, a panic gesture was performed at that time in uptime millis and is still pending.
    private long mPendingPanicGestureUptime;

    InputConsumer mInputConsumer = null;

    static final Rect mTmpParentFrame = new Rect();
    static final Rect mTmpDisplayFrame = new Rect();
    static final Rect mTmpOverscanFrame = new Rect();
    static final Rect mTmpContentFrame = new Rect();
    static final Rect mTmpVisibleFrame = new Rect();
    static final Rect mTmpDecorFrame = new Rect();
    static final Rect mTmpStableFrame = new Rect();
    static final Rect mTmpNavigationFrame = new Rect();
    static final Rect mTmpOutsetFrame = new Rect();
    private static final Rect mTmpDisplayCutoutSafeExceptMaybeBarsRect = new Rect();
    private static final Rect mTmpRect = new Rect();

    WindowState mTopFullscreenOpaqueWindowState;
    WindowState mTopFullscreenOpaqueOrDimmingWindowState;
    WindowState mTopDockedOpaqueWindowState;
    WindowState mTopDockedOpaqueOrDimmingWindowState;
    boolean mTopIsFullscreen;
    boolean mForceStatusBar;
    boolean mForceStatusBarFromKeyguard;
    private boolean mForceStatusBarTransparent;
    int mNavBarOpacityMode = NAV_BAR_OPAQUE_WHEN_FREEFORM_OR_DOCKED;
    boolean mForcingShowNavBar;
    int mForcingShowNavBarLayer;

    private boolean mPendingKeyguardOccluded;
    private boolean mKeyguardOccludedChanged;
    private boolean mNotifyUserActivity;

    boolean mShowingDream;
    private boolean mLastShowingDream;
    boolean mDreamingLockscreen;
    boolean mDreamingSleepTokenNeeded;
    private boolean mWindowSleepTokenNeeded;
    private boolean mLastWindowSleepTokenNeeded;

    @GuardedBy("mHandler")
    private SleepToken mWindowSleepToken;

    SleepToken mDreamingSleepToken;
    SleepToken mScreenOffSleepToken;
    volatile boolean mKeyguardOccluded;
    boolean mHomePressed;
    boolean mHomeConsumed;
    boolean mHomeDoubleTapPending;
    Intent mHomeIntent;
    Intent mCarDockIntent;
    Intent mDeskDockIntent;
    Intent mVrHeadsetHomeIntent;
    boolean mSearchKeyShortcutPending;
    boolean mConsumeSearchKeyUp;
    boolean mPendingMetaAction;
    boolean mPendingCapsLockToggle;
    int mMetaState;
    int mInitialMetaState;
    boolean mForceShowSystemBars;

    // support for activating the lock screen while the screen is on
    boolean mAllowLockscreenWhenOn;
    int mLockScreenTimeout;
    boolean mLockScreenTimerActive;

    // Behavior of ENDCALL Button.  (See Settings.System.END_BUTTON_BEHAVIOR.)
    int mEndcallBehavior;

    // Behavior of POWER button while in-call and screen on.
    // (See Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR.)
    int mIncallPowerBehavior;

    // Behavior of Back button while in-call and screen on
    int mIncallBackBehavior;

    // Behavior of rotation suggestions. (See Settings.Secure.SHOW_ROTATION_SUGGESTION)
    int mShowRotationSuggestions;

    // Whether system navigation keys are enabled
    boolean mSystemNavigationKeysEnabled;

    Display mDisplay;

    int mLandscapeRotation = 0;  // default landscape rotation
    int mSeascapeRotation = 0;   // "other" landscape rotation, 180 degrees from mLandscapeRotation
    int mPortraitRotation = 0;   // default portrait rotation
    int mUpsideDownRotation = 0; // "other" portrait rotation

    // What we do when the user long presses on home
    private int mLongPressOnHomeBehavior;

    // What we do when the user double-taps on home
    private int mDoubleTapOnHomeBehavior;

    // Allowed theater mode wake actions
    private boolean mAllowTheaterModeWakeFromKey;
    private boolean mAllowTheaterModeWakeFromPowerKey;
    private boolean mAllowTheaterModeWakeFromMotion;
    private boolean mAllowTheaterModeWakeFromMotionWhenNotDreaming;
    private boolean mAllowTheaterModeWakeFromCameraLens;
    private boolean mAllowTheaterModeWakeFromLidSwitch;
    private boolean mAllowTheaterModeWakeFromWakeGesture;

    // Whether to support long press from power button in non-interactive mode
    private boolean mSupportLongPressPowerWhenNonInteractive;

    // Whether to go to sleep entering theater mode from power button
    private boolean mGoToSleepOnButtonPressTheaterMode;

    // Screenshot trigger states
    // Time to volume and power must be pressed within this interval of each other.
    private static final long SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS = 150;
    // Increase the chord delay when taking a screenshot from the keyguard
    private static final float KEYGUARD_SCREENSHOT_CHORD_DELAY_MULTIPLIER = 2.5f;
    private boolean mScreenshotChordEnabled;
    private boolean mScreenshotChordVolumeDownKeyTriggered;
    private long mScreenshotChordVolumeDownKeyTime;
    private boolean mScreenshotChordVolumeDownKeyConsumed;
    private boolean mA11yShortcutChordVolumeUpKeyTriggered;
    private long mA11yShortcutChordVolumeUpKeyTime;
    private boolean mA11yShortcutChordVolumeUpKeyConsumed;

    private boolean mScreenshotChordPowerKeyTriggered;
    private long mScreenshotChordPowerKeyTime;

    // Ringer toggle should reuse timing and triggering from screenshot power and a11y vol up
    private int mRingerToggleChord = VOLUME_HUSH_OFF;

    private static final long BUGREPORT_TV_GESTURE_TIMEOUT_MILLIS = 1000;

    private boolean mBugreportTvKey1Pressed;
    private boolean mBugreportTvKey2Pressed;
    private boolean mBugreportTvScheduled;

    private boolean mAccessibilityTvKey1Pressed;
    private boolean mAccessibilityTvKey2Pressed;
    private boolean mAccessibilityTvScheduled;

    /* The number of steps between min and max brightness */
    private static final int BRIGHTNESS_STEPS = 10;

    SettingsObserver mSettingsObserver;
    ShortcutManager mShortcutManager;
    PowerManager.WakeLock mBroadcastWakeLock;
    PowerManager.WakeLock mPowerKeyWakeLock;
    boolean mHavePendingMediaKeyRepeatWithWakeLock;

    private int mCurrentUserId;

    /* Whether accessibility is magnifying the screen */
    private boolean mScreenMagnificationActive;

    // Maps global key codes to the components that will handle them.
    private GlobalKeyManager mGlobalKeyManager;

    // Fallback actions by key code.
    private final SparseArray<KeyCharacterMap.FallbackAction> mFallbackActions =
            new SparseArray<KeyCharacterMap.FallbackAction>();

    private final LogDecelerateInterpolator mLogDecelerateInterpolator
            = new LogDecelerateInterpolator(100, 0);

    private final MutableBoolean mTmpBoolean = new MutableBoolean(false);

    private static final int MSG_ENABLE_POINTER_LOCATION = 1;
    private static final int MSG_DISABLE_POINTER_LOCATION = 2;
    private static final int MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK = 3;
    private static final int MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK = 4;
    private static final int MSG_KEYGUARD_DRAWN_COMPLETE = 5;
    private static final int MSG_KEYGUARD_DRAWN_TIMEOUT = 6;
    private static final int MSG_WINDOW_MANAGER_DRAWN_COMPLETE = 7;
    private static final int MSG_DISPATCH_SHOW_RECENTS = 9;
    private static final int MSG_DISPATCH_SHOW_GLOBAL_ACTIONS = 10;
    private static final int MSG_HIDE_BOOT_MESSAGE = 11;
    private static final int MSG_LAUNCH_VOICE_ASSIST_WITH_WAKE_LOCK = 12;
    private static final int MSG_POWER_DELAYED_PRESS = 13;
    private static final int MSG_POWER_LONG_PRESS = 14;
    private static final int MSG_UPDATE_DREAMING_SLEEP_TOKEN = 15;
    private static final int MSG_REQUEST_TRANSIENT_BARS = 16;
    private static final int MSG_SHOW_PICTURE_IN_PICTURE_MENU = 17;
    private static final int MSG_BACK_LONG_PRESS = 18;
    private static final int MSG_DISPOSE_INPUT_CONSUMER = 19;
    private static final int MSG_ACCESSIBILITY_SHORTCUT = 20;
    private static final int MSG_BUGREPORT_TV = 21;
    private static final int MSG_ACCESSIBILITY_TV = 22;
    private static final int MSG_DISPATCH_BACK_KEY_TO_AUTOFILL = 23;
    private static final int MSG_SYSTEM_KEY_PRESS = 24;
    private static final int MSG_HANDLE_ALL_APPS = 25;
    private static final int MSG_LAUNCH_ASSIST = 26;
    private static final int MSG_LAUNCH_ASSIST_LONG_PRESS = 27;
    private static final int MSG_POWER_VERY_LONG_PRESS = 28;
    private static final int MSG_NOTIFY_USER_ACTIVITY = 29;
    private static final int MSG_RINGER_TOGGLE_CHORD = 30;

    private static final int MSG_REQUEST_TRANSIENT_BARS_ARG_STATUS = 0;
    private static final int MSG_REQUEST_TRANSIENT_BARS_ARG_NAVIGATION = 1;

    private class PolicyHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MSG_ENABLE_POINTER_LOCATION:
                    enablePointerLocation();
                    break;
                case MSG_DISABLE_POINTER_LOCATION:
                    disablePointerLocation();
                    break;
                case MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK:
                    dispatchMediaKeyWithWakeLock((KeyEvent)msg.obj);
                    break;
                case MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK:
                    dispatchMediaKeyRepeatWithWakeLock((KeyEvent)msg.obj);
                    break;
                case MSG_DISPATCH_SHOW_RECENTS:
                    showRecentApps(false);
                    break;
                case MSG_DISPATCH_SHOW_GLOBAL_ACTIONS:
                    showGlobalActionsInternal();
                    break;
                case MSG_KEYGUARD_DRAWN_COMPLETE:
                    if (DEBUG_WAKEUP) Slog.w(TAG, "Setting mKeyguardDrawComplete");
                    finishKeyguardDrawn();
                    break;
                case MSG_KEYGUARD_DRAWN_TIMEOUT:
                    Slog.w(TAG, "Keyguard drawn timeout. Setting mKeyguardDrawComplete");
                    finishKeyguardDrawn();
                    break;
                case MSG_WINDOW_MANAGER_DRAWN_COMPLETE:
                    if (DEBUG_WAKEUP) Slog.w(TAG, "Setting mWindowManagerDrawComplete");
                    finishWindowsDrawn();
                    break;
                case MSG_HIDE_BOOT_MESSAGE:
                    handleHideBootMessage();
                    break;
                case MSG_LAUNCH_ASSIST:
                    final int deviceId = msg.arg1;
                    final String hint = (String) msg.obj;
                    launchAssistAction(hint, deviceId);
                    break;
                case MSG_LAUNCH_ASSIST_LONG_PRESS:
                    launchAssistLongPressAction();
                    break;
                case MSG_LAUNCH_VOICE_ASSIST_WITH_WAKE_LOCK:
                    launchVoiceAssistWithWakeLock();
                    break;
                case MSG_POWER_DELAYED_PRESS:
                    powerPress((Long)msg.obj, msg.arg1 != 0, msg.arg2);
                    finishPowerKeyPress();
                    break;
                case MSG_POWER_LONG_PRESS:
                    powerLongPress();
                    break;
                case MSG_POWER_VERY_LONG_PRESS:
                    powerVeryLongPress();
                    break;
                case MSG_UPDATE_DREAMING_SLEEP_TOKEN:
                    updateDreamingSleepToken(msg.arg1 != 0);
                    break;
                case MSG_REQUEST_TRANSIENT_BARS:
                    WindowState targetBar = (msg.arg1 == MSG_REQUEST_TRANSIENT_BARS_ARG_STATUS) ?
                            mStatusBar : mNavigationBar;
                    if (targetBar != null) {
                        requestTransientBars(targetBar);
                    }
                    break;
                case MSG_SHOW_PICTURE_IN_PICTURE_MENU:
                    showPictureInPictureMenuInternal();
                    break;
                case MSG_BACK_LONG_PRESS:
                    backLongPress();
                    break;
                case MSG_DISPOSE_INPUT_CONSUMER:
                    disposeInputConsumer((InputConsumer) msg.obj);
                    break;
                case MSG_ACCESSIBILITY_SHORTCUT:
                    accessibilityShortcutActivated();
                    break;
                case MSG_BUGREPORT_TV:
                    takeBugreport();
                    break;
                case MSG_ACCESSIBILITY_TV:
                    if (mAccessibilityShortcutController.isAccessibilityShortcutAvailable(false)) {
                        accessibilityShortcutActivated();
                    }
                    break;
                case MSG_DISPATCH_BACK_KEY_TO_AUTOFILL:
                    mAutofillManagerInternal.onBackKeyPressed();
                    break;
                case MSG_SYSTEM_KEY_PRESS:
                    sendSystemKeyToStatusBar(msg.arg1);
                    break;
                case MSG_HANDLE_ALL_APPS:
                    launchAllAppsAction();
                    break;
                case MSG_NOTIFY_USER_ACTIVITY:
                    removeMessages(MSG_NOTIFY_USER_ACTIVITY);
                    Intent intent = new Intent(ACTION_USER_ACTIVITY_NOTIFICATION);
                    intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
                    mContext.sendBroadcastAsUser(intent, UserHandle.ALL,
                            android.Manifest.permission.USER_ACTIVITY);
                case MSG_RINGER_TOGGLE_CHORD:
                    handleRingerChordGesture();
                    break;
            }
        }
    }

    private UEventObserver mHDMIObserver = new UEventObserver() {
        @Override
        public void onUEvent(UEventObserver.UEvent event) {
            setHdmiPlugged("1".equals(event.get("SWITCH_STATE")));
        }
    };

    class SettingsObserver extends ContentObserver {
        SettingsObserver(Handler handler) {
            super(handler);
        }

        void observe() {
            // Observe all users' changes
            ContentResolver resolver = mContext.getContentResolver();
            resolver.registerContentObserver(Settings.System.getUriFor(
                    Settings.System.END_BUTTON_BEHAVIOR), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.WAKE_GESTURE_ENABLED), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.System.getUriFor(
                    Settings.System.ACCELEROMETER_ROTATION), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.System.getUriFor(
                    Settings.System.USER_ROTATION), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.System.getUriFor(
                    Settings.System.SCREEN_OFF_TIMEOUT), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.System.getUriFor(
                    Settings.System.POINTER_LOCATION), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.DEFAULT_INPUT_METHOD), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.IMMERSIVE_MODE_CONFIRMATIONS), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.SHOW_ROTATION_SUGGESTIONS), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.VOLUME_HUSH_GESTURE), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Global.getUriFor(
                    Settings.Global.POLICY_CONTROL), false, this,
                    UserHandle.USER_ALL);
            resolver.registerContentObserver(Settings.Secure.getUriFor(
                    Settings.Secure.SYSTEM_NAVIGATION_KEYS_ENABLED), false, this,
                    UserHandle.USER_ALL);
            updateSettings();
        }

        @Override public void onChange(boolean selfChange) {
            updateSettings();
            updateRotation(false);
        }
    }

    class MyWakeGestureListener extends WakeGestureListener {
        MyWakeGestureListener(Context context, Handler handler) {
            super(context, handler);
        }

        @Override
        public void onWakeUp() {
            synchronized (mLock) {
                if (shouldEnableWakeGestureLp()) {
                    performHapticFeedbackLw(null, HapticFeedbackConstants.VIRTUAL_KEY, false);
                    wakeUp(SystemClock.uptimeMillis(), mAllowTheaterModeWakeFromWakeGesture,
                            "android.policy:GESTURE");
                }
            }
        }
    }

    class MyOrientationListener extends WindowOrientationListener {

        private SparseArray<Runnable> mRunnableCache;

        MyOrientationListener(Context context, Handler handler) {
            super(context, handler);
            mRunnableCache = new SparseArray<>(5);
        }

        private class UpdateRunnable implements Runnable {
            private final int mRotation;
            UpdateRunnable(int rotation) {
                mRotation = rotation;
            }

            @Override
            public void run() {
                // send interaction hint to improve redraw performance
                mPowerManagerInternal.powerHint(PowerHint.INTERACTION, 0);
                if (isRotationChoicePossible(mCurrentAppOrientation)) {
                    final boolean isValid = isValidRotationChoice(mCurrentAppOrientation,
                            mRotation);
                    sendProposedRotationChangeToStatusBarInternal(mRotation, isValid);
                } else {
                    updateRotation(false);
                }
            }
        }

        @Override
        public void onProposedRotationChanged(int rotation) {
            if (localLOGV) Slog.v(TAG, "onProposedRotationChanged, rotation=" + rotation);
            Runnable r = mRunnableCache.get(rotation, null);
            if (r == null){
                r = new UpdateRunnable(rotation);
                mRunnableCache.put(rotation, r);
            }
            mHandler.post(r);
        }
    }
    MyOrientationListener mOrientationListener;

    final IPersistentVrStateCallbacks mPersistentVrModeListener =
            new IPersistentVrStateCallbacks.Stub() {
        @Override
        public void onPersistentVrStateChanged(boolean enabled) {
            mPersistentVrModeEnabled = enabled;
        }
    };

    private final StatusBarController mStatusBarController = new StatusBarController();

    private final BarController mNavigationBarController = new BarController("NavigationBar",
            View.NAVIGATION_BAR_TRANSIENT,
            View.NAVIGATION_BAR_UNHIDE,
            View.NAVIGATION_BAR_TRANSLUCENT,
            StatusBarManager.WINDOW_NAVIGATION_BAR,
            FLAG_TRANSLUCENT_NAVIGATION,
            View.NAVIGATION_BAR_TRANSPARENT);

    private final BarController.OnBarVisibilityChangedListener mNavBarVisibilityListener =
            new BarController.OnBarVisibilityChangedListener() {
        @Override
        public void onBarVisibilityChanged(boolean visible) {
            mAccessibilityManager.notifyAccessibilityButtonVisibilityChanged(visible);
        }
    };

    private final Runnable mAcquireSleepTokenRunnable = () -> {
        if (mWindowSleepToken != null) {
            return;
        }
        mWindowSleepToken = mActivityManagerInternal.acquireSleepToken("WindowSleepToken",
                DEFAULT_DISPLAY);
    };

    private final Runnable mReleaseSleepTokenRunnable = () -> {
        if (mWindowSleepToken == null) {
            return;
        }
        mWindowSleepToken.release();
        mWindowSleepToken = null;
    };

    private ImmersiveModeConfirmation mImmersiveModeConfirmation;

    @VisibleForTesting
    SystemGesturesPointerEventListener mSystemGestures;

    private void handleRingerChordGesture() {
        if (mRingerToggleChord == VOLUME_HUSH_OFF) {
            return;
        }
        getAudioManagerInternal();
        mAudioManagerInternal.silenceRingerModeInternal("volume_hush");
    }

    IStatusBarService getStatusBarService() {
        synchronized (mServiceAquireLock) {
            if (mStatusBarService == null) {
                mStatusBarService = IStatusBarService.Stub.asInterface(
                        ServiceManager.getService("statusbar"));
            }
            return mStatusBarService;
        }
    }

    StatusBarManagerInternal getStatusBarManagerInternal() {
        synchronized (mServiceAquireLock) {
            if (mStatusBarManagerInternal == null) {
                mStatusBarManagerInternal =
                        LocalServices.getService(StatusBarManagerInternal.class);
            }
            return mStatusBarManagerInternal;
        }
    }

    AudioManagerInternal getAudioManagerInternal() {
        synchronized (mServiceAquireLock) {
            if (mAudioManagerInternal == null) {
                mAudioManagerInternal = LocalServices.getService(AudioManagerInternal.class);
            }
            return mAudioManagerInternal;
        }
    }

    /*
     * We always let the sensor be switched on by default except when
     * the user has explicitly disabled sensor based rotation or when the
     * screen is switched off.
     */
    boolean needSensorRunningLp() {
        if (mSupportAutoRotation) {
            if (mCurrentAppOrientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR
                    || mCurrentAppOrientation == ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR
                    || mCurrentAppOrientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT
                    || mCurrentAppOrientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE) {
                // If the application has explicitly requested to follow the
                // orientation, then we need to turn the sensor on.
                return true;
            }
        }
        if ((mCarDockEnablesAccelerometer && mDockMode == Intent.EXTRA_DOCK_STATE_CAR) ||
                (mDeskDockEnablesAccelerometer && (mDockMode == Intent.EXTRA_DOCK_STATE_DESK
                        || mDockMode == Intent.EXTRA_DOCK_STATE_LE_DESK
                        || mDockMode == Intent.EXTRA_DOCK_STATE_HE_DESK))) {
            // enable accelerometer if we are docked in a dock that enables accelerometer
            // orientation management,
            return true;
        }
        if (mUserRotationMode == USER_ROTATION_LOCKED) {
            // If the setting for using the sensor by default is enabled, then
            // we will always leave it on.  Note that the user could go to
            // a window that forces an orientation that does not use the
            // sensor and in theory we could turn it off... however, when next
            // turning it on we won't have a good value for the current
            // orientation for a little bit, which can cause orientation
            // changes to lag, so we'd like to keep it always on.  (It will
            // still be turned off when the screen is off.)

            // When locked we can provide rotation suggestions users can approve to change the
            // current screen rotation. To do this the sensor needs to be running.
            return mSupportAutoRotation &&
                    mShowRotationSuggestions == Settings.Secure.SHOW_ROTATION_SUGGESTIONS_ENABLED;
        }
        return mSupportAutoRotation;
    }

    /*
     * Various use cases for invoking this function
     * screen turning off, should always disable listeners if already enabled
     * screen turned on and current app has sensor based orientation, enable listeners
     * if not already enabled
     * screen turned on and current app does not have sensor orientation, disable listeners if
     * already enabled
     * screen turning on and current app has sensor based orientation, enable listeners if needed
     * screen turning on and current app has nosensor based orientation, do nothing
     */
    void updateOrientationListenerLp() {
        if (!mOrientationListener.canDetectOrientation()) {
            // If sensor is turned off or nonexistent for some reason
            return;
        }
        // Could have been invoked due to screen turning on or off or
        // change of the currently visible window's orientation.
        if (localLOGV) Slog.v(TAG, "mScreenOnEarly=" + mScreenOnEarly
                + ", mAwake=" + mAwake + ", mCurrentAppOrientation=" + mCurrentAppOrientation
                + ", mOrientationSensorEnabled=" + mOrientationSensorEnabled
                + ", mKeyguardDrawComplete=" + mKeyguardDrawComplete
                + ", mWindowManagerDrawComplete=" + mWindowManagerDrawComplete);

        boolean disable = true;
        // Note: We postpone the rotating of the screen until the keyguard as well as the
        // window manager have reported a draw complete or the keyguard is going away in dismiss
        // mode.
        if (mScreenOnEarly && mAwake && ((mKeyguardDrawComplete && mWindowManagerDrawComplete))) {
            if (needSensorRunningLp()) {
                disable = false;
                //enable listener if not already enabled
                if (!mOrientationSensorEnabled) {
                    // Don't clear the current sensor orientation if the keyguard is going away in
                    // dismiss mode. This allows window manager to use the last sensor reading to
                    // determine the orientation vs. falling back to the last known orientation if
                    // the sensor reading was cleared which can cause it to relaunch the app that
                    // will show in the wrong orientation first before correcting leading to app
                    // launch delays.
                    mOrientationListener.enable(true /* clearCurrentRotation */);
                    if(localLOGV) Slog.v(TAG, "Enabling listeners");
                    mOrientationSensorEnabled = true;
                }
            }
        }
        //check if sensors need to be disabled
        if (disable && mOrientationSensorEnabled) {
            mOrientationListener.disable();
            if(localLOGV) Slog.v(TAG, "Disabling listeners");
            mOrientationSensorEnabled = false;
        }
    }

    private void interceptBackKeyDown() {
        MetricsLogger.count(mContext, "key_back_down", 1);
        // Reset back key state for long press
        mBackKeyHandled = false;

        if (hasLongPressOnBackBehavior()) {
            Message msg = mHandler.obtainMessage(MSG_BACK_LONG_PRESS);
            msg.setAsynchronous(true);
            mHandler.sendMessageDelayed(msg,
                    ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
        }
    }

    // returns true if the key was handled and should not be passed to the user
    private boolean interceptBackKeyUp(KeyEvent event) {
        // Cache handled state
        boolean handled = mBackKeyHandled;

        // Reset back long press state
        cancelPendingBackKeyAction();

        if (mHasFeatureWatch) {
            TelecomManager telecomManager = getTelecommService();

            if (telecomManager != null) {
                if (telecomManager.isRinging()) {
                    // Pressing back while there's a ringing incoming
                    // call should silence the ringer.
                    telecomManager.silenceRinger();

                    // It should not prevent navigating away
                    return false;
                } else if (
                    (mIncallBackBehavior & Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR_HANGUP) != 0
                        && telecomManager.isInCall()) {
                    // Otherwise, if "Back button ends call" is enabled,
                    // the Back button will hang up any current active call.
                    return telecomManager.endCall();
                }
            }
        }

        if (mAutofillManagerInternal != null && event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
            mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_BACK_KEY_TO_AUTOFILL));
        }

        return handled;
    }

    private void interceptPowerKeyDown(KeyEvent event, boolean interactive) {
        // Hold a wake lock until the power key is released.
        if (!mPowerKeyWakeLock.isHeld()) {
            mPowerKeyWakeLock.acquire();
        }

        // Cancel multi-press detection timeout.
        if (mPowerKeyPressCounter != 0) {
            mHandler.removeMessages(MSG_POWER_DELAYED_PRESS);
        }

        // Detect user pressing the power button in panic when an application has
        // taken over the whole screen.
        boolean panic = mImmersiveModeConfirmation.onPowerKeyDown(interactive,
                SystemClock.elapsedRealtime(), isImmersiveMode(mLastSystemUiFlags),
                isNavBarEmpty(mLastSystemUiFlags));
        if (panic) {
            mHandler.post(mHiddenNavPanic);
        }

        // Abort possibly stuck animations.
        mHandler.post(mWindowManagerFuncs::triggerAnimationFailsafe);

        // Latch power key state to detect screenshot chord.
        if (interactive && !mScreenshotChordPowerKeyTriggered
                && (event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
            mScreenshotChordPowerKeyTriggered = true;
            mScreenshotChordPowerKeyTime = event.getDownTime();
            interceptScreenshotChord();
            interceptRingerToggleChord();
        }

        // Stop ringing or end call if configured to do so when power is pressed.
        TelecomManager telecomManager = getTelecommService();
        boolean hungUp = false;
        if (telecomManager != null) {
            if (telecomManager.isRinging()) {
                // Pressing Power while there's a ringing incoming
                // call should silence the ringer.
                telecomManager.silenceRinger();
            } else if ((mIncallPowerBehavior
                    & Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP) != 0
                    && telecomManager.isInCall() && interactive) {
                // Otherwise, if "Power button ends call" is enabled,
                // the Power button will hang up any current active call.
                hungUp = telecomManager.endCall();
            }
        }

        GestureLauncherService gestureService = LocalServices.getService(
                GestureLauncherService.class);
        boolean gesturedServiceIntercepted = false;
        if (gestureService != null) {
            gesturedServiceIntercepted = gestureService.interceptPowerKeyDown(event, interactive,
                    mTmpBoolean);
            if (mTmpBoolean.value && mRequestedOrGoingToSleep) {
                mCameraGestureTriggeredDuringGoingToSleep = true;
            }
        }

        // Inform the StatusBar; but do not allow it to consume the event.
        sendSystemKeyToStatusBarAsync(event.getKeyCode());

        // If the power key has still not yet been handled, then detect short
        // press, long press, or multi press and decide what to do.
        mPowerKeyHandled = hungUp || mScreenshotChordVolumeDownKeyTriggered
                || mA11yShortcutChordVolumeUpKeyTriggered || gesturedServiceIntercepted;
        if (!mPowerKeyHandled) {
            if (interactive) {
                // When interactive, we're already awake.
                // Wait for a long press or for the button to be released to decide what to do.
                if (hasLongPressOnPowerBehavior()) {
                    if ((event.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0) {
                        powerLongPress();
                    } else {
                        Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
                        msg.setAsynchronous(true);
                        mHandler.sendMessageDelayed(msg,
                                ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());

                        if (hasVeryLongPressOnPowerBehavior()) {
                            Message longMsg = mHandler.obtainMessage(MSG_POWER_VERY_LONG_PRESS);
                            longMsg.setAsynchronous(true);
                            mHandler.sendMessageDelayed(longMsg, mVeryLongPressTimeout);
                        }
                    }
                }
            } else {
                wakeUpFromPowerKey(event.getDownTime());

                if (mSupportLongPressPowerWhenNonInteractive && hasLongPressOnPowerBehavior()) {
                    if ((event.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0) {
                        powerLongPress();
                    } else {
                        Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
                        msg.setAsynchronous(true);
                        mHandler.sendMessageDelayed(msg,
                                ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());

                        if (hasVeryLongPressOnPowerBehavior()) {
                            Message longMsg = mHandler.obtainMessage(MSG_POWER_VERY_LONG_PRESS);
                            longMsg.setAsynchronous(true);
                            mHandler.sendMessageDelayed(longMsg, mVeryLongPressTimeout);
                        }
                    }

                    mBeganFromNonInteractive = true;
                } else {
                    final int maxCount = getMaxMultiPressPowerCount();

                    if (maxCount <= 1) {
                        mPowerKeyHandled = true;
                    } else {
                        mBeganFromNonInteractive = true;
                    }
                }
            }
        }
    }

    private void interceptPowerKeyUp(KeyEvent event, boolean interactive, boolean canceled) {
        final boolean handled = canceled || mPowerKeyHandled;
        mScreenshotChordPowerKeyTriggered = false;
        cancelPendingScreenshotChordAction();
        cancelPendingPowerKeyAction();

        if (!handled) {
            // Figure out how to handle the key now that it has been released.
            mPowerKeyPressCounter += 1;

            final int maxCount = getMaxMultiPressPowerCount();
            final long eventTime = event.getDownTime();
            if (mPowerKeyPressCounter < maxCount) {
                // This could be a multi-press.  Wait a little bit longer to confirm.
                // Continue holding the wake lock.
                Message msg = mHandler.obtainMessage(MSG_POWER_DELAYED_PRESS,
                        interactive ? 1 : 0, mPowerKeyPressCounter, eventTime);
                msg.setAsynchronous(true);
                mHandler.sendMessageDelayed(msg, ViewConfiguration.getMultiPressTimeout());
                return;
            }

            // No other actions.  Handle it immediately.
            powerPress(eventTime, interactive, mPowerKeyPressCounter);
        }

        // Done.  Reset our state.
        finishPowerKeyPress();
    }

    private void finishPowerKeyPress() {
        mBeganFromNonInteractive = false;
        mPowerKeyPressCounter = 0;
        if (mPowerKeyWakeLock.isHeld()) {
            mPowerKeyWakeLock.release();
        }
    }

    private void cancelPendingPowerKeyAction() {
        if (!mPowerKeyHandled) {
            mPowerKeyHandled = true;
            mHandler.removeMessages(MSG_POWER_LONG_PRESS);
        }
        if (hasVeryLongPressOnPowerBehavior()) {
            mHandler.removeMessages(MSG_POWER_VERY_LONG_PRESS);
        }
    }

    private void cancelPendingBackKeyAction() {
        if (!mBackKeyHandled) {
            mBackKeyHandled = true;
            mHandler.removeMessages(MSG_BACK_LONG_PRESS);
        }
    }

    private void powerPress(long eventTime, boolean interactive, int count) {
        if (mScreenOnEarly && !mScreenOnFully) {
            Slog.i(TAG, "Suppressed redundant power key press while "
                    + "already in the process of turning the screen on.");
            return;
        }
        Slog.d(TAG, "powerPress: eventTime=" + eventTime + " interactive=" + interactive
                + " count=" + count + " beganFromNonInteractive=" + mBeganFromNonInteractive +
                " mShortPressOnPowerBehavior=" + mShortPressOnPowerBehavior);

        if (count == 2) {
            powerMultiPressAction(eventTime, interactive, mDoublePressOnPowerBehavior);
        } else if (count == 3) {
            powerMultiPressAction(eventTime, interactive, mTriplePressOnPowerBehavior);
        } else if (interactive && !mBeganFromNonInteractive) {
            switch (mShortPressOnPowerBehavior) {
                case SHORT_PRESS_POWER_NOTHING:
                    break;
                case SHORT_PRESS_POWER_GO_TO_SLEEP:
                    goToSleep(eventTime, PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 0);
                    break;
                case SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP:
                    goToSleep(eventTime, PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON,
                            PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE);
                    break;
                case SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP_AND_GO_HOME:
                    goToSleep(eventTime, PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON,
                            PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE);
                    launchHomeFromHotKey();
                    break;
                case SHORT_PRESS_POWER_GO_HOME:
                    shortPressPowerGoHome();
                    break;
                case SHORT_PRESS_POWER_CLOSE_IME_OR_GO_HOME: {
                    if (mDismissImeOnBackKeyPressed) {
                        if (mInputMethodManagerInternal == null) {
                            mInputMethodManagerInternal =
                                    LocalServices.getService(InputMethodManagerInternal.class);
                        }
                        if (mInputMethodManagerInternal != null) {
                            mInputMethodManagerInternal.hideCurrentInputMethod();
                        }
                    } else {
                        shortPressPowerGoHome();
                    }
                    break;
                }
            }
        }
    }

    private void goToSleep(long eventTime, int reason, int flags) {
        mRequestedOrGoingToSleep = true;
        mPowerManager.goToSleep(eventTime, reason, flags);
    }

    private void shortPressPowerGoHome() {
        launchHomeFromHotKey(true /* awakenFromDreams */, false /*respectKeyguard*/);
        if (isKeyguardShowingAndNotOccluded()) {
            // Notify keyguard so it can do any special handling for the power button since the
            // device will not power off and only launch home.
            mKeyguardDelegate.onShortPowerPressedGoHome();
        }
    }

    private void powerMultiPressAction(long eventTime, boolean interactive, int behavior) {
        switch (behavior) {
            case MULTI_PRESS_POWER_NOTHING:
                break;
            case MULTI_PRESS_POWER_THEATER_MODE:
                if (!isUserSetupComplete()) {
                    Slog.i(TAG, "Ignoring toggling theater mode - device not setup.");
                    break;
                }

                if (isTheaterModeEnabled()) {
                    Slog.i(TAG, "Toggling theater mode off.");
                    Settings.Global.putInt(mContext.getContentResolver(),
                            Settings.Global.THEATER_MODE_ON, 0);
                    if (!interactive) {
                        wakeUpFromPowerKey(eventTime);
                    }
                } else {
                    Slog.i(TAG, "Toggling theater mode on.");
                    Settings.Global.putInt(mContext.getContentResolver(),
                            Settings.Global.THEATER_MODE_ON, 1);

                    if (mGoToSleepOnButtonPressTheaterMode && interactive) {
                        goToSleep(eventTime, PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 0);
                    }
                }
                break;
            case MULTI_PRESS_POWER_BRIGHTNESS_BOOST:
                Slog.i(TAG, "Starting brightness boost.");
                if (!interactive) {
                    wakeUpFromPowerKey(eventTime);
                }
                mPowerManager.boostScreenBrightness(eventTime);
                break;
        }
    }

    private int getMaxMultiPressPowerCount() {
        if (mTriplePressOnPowerBehavior != MULTI_PRESS_POWER_NOTHING) {
            return 3;
        }
        if (mDoublePressOnPowerBehavior != MULTI_PRESS_POWER_NOTHING) {
            return 2;
        }
        return 1;
    }

    private void powerLongPress() {
        final int behavior = getResolvedLongPressOnPowerBehavior();
        switch (behavior) {
        case LONG_PRESS_POWER_NOTHING:
            break;
        case LONG_PRESS_POWER_GLOBAL_ACTIONS:
            mPowerKeyHandled = true;
            performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
            showGlobalActionsInternal();
            break;
        case LONG_PRESS_POWER_SHUT_OFF:
        case LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM:
            mPowerKeyHandled = true;
            performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
            sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
            mWindowManagerFuncs.shutdown(behavior == LONG_PRESS_POWER_SHUT_OFF);
            break;
        case LONG_PRESS_POWER_GO_TO_VOICE_ASSIST:
            mPowerKeyHandled = true;
            performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
            final boolean keyguardActive = mKeyguardDelegate == null
                    ? false
                    : mKeyguardDelegate.isShowing();
            if (!keyguardActive) {
                Intent intent = new Intent(Intent.ACTION_VOICE_ASSIST);
                if (mAllowStartActivityForLongPressOnPowerDuringSetup) {
                    mContext.startActivityAsUser(intent, UserHandle.CURRENT_OR_SELF);
                } else {
                    startActivityAsUser(intent, UserHandle.CURRENT_OR_SELF);
                }
            }
            break;
        }
    }

    private void powerVeryLongPress() {
        switch (mVeryLongPressOnPowerBehavior) {
        case VERY_LONG_PRESS_POWER_NOTHING:
            break;
        case VERY_LONG_PRESS_POWER_GLOBAL_ACTIONS:
            mPowerKeyHandled = true;
            performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
            showGlobalActionsInternal();
            break;
        }
    }

    private void backLongPress() {
        mBackKeyHandled = true;

        switch (mLongPressOnBackBehavior) {
            case LONG_PRESS_BACK_NOTHING:
                break;
            case LONG_PRESS_BACK_GO_TO_VOICE_ASSIST:
                final boolean keyguardActive = mKeyguardDelegate == null
                        ? false
                        : mKeyguardDelegate.isShowing();
                if (!keyguardActive) {
                    Intent intent = new Intent(Intent.ACTION_VOICE_ASSIST);
                    startActivityAsUser(intent, UserHandle.CURRENT_OR_SELF);
                }
                break;
        }
    }

    private void accessibilityShortcutActivated() {
        mAccessibilityShortcutController.performAccessibilityShortcut();
    }

    private void disposeInputConsumer(InputConsumer inputConsumer) {
        if (inputConsumer != null) {
            inputConsumer.dismiss();
        }
    }

    private void sleepPress() {
        if (mShortPressOnSleepBehavior == SHORT_PRESS_SLEEP_GO_TO_SLEEP_AND_GO_HOME) {
            launchHomeFromHotKey(false /* awakenDreams */, true /*respectKeyguard*/);
        }
    }

    private void sleepRelease(long eventTime) {
        switch (mShortPressOnSleepBehavior) {
            case SHORT_PRESS_SLEEP_GO_TO_SLEEP:
            case SHORT_PRESS_SLEEP_GO_TO_SLEEP_AND_GO_HOME:
                Slog.i(TAG, "sleepRelease() calling goToSleep(GO_TO_SLEEP_REASON_SLEEP_BUTTON)");
                goToSleep(eventTime, PowerManager.GO_TO_SLEEP_REASON_SLEEP_BUTTON, 0);
                break;
        }
    }

    private int getResolvedLongPressOnPowerBehavior() {
        if (FactoryTest.isLongPressOnPowerOffEnabled()) {
            return LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM;
        }
        return mLongPressOnPowerBehavior;
    }

    private boolean hasLongPressOnPowerBehavior() {
        return getResolvedLongPressOnPowerBehavior() != LONG_PRESS_POWER_NOTHING;
    }

    private boolean hasVeryLongPressOnPowerBehavior() {
        return mVeryLongPressOnPowerBehavior != VERY_LONG_PRESS_POWER_NOTHING;
    }

    private boolean hasLongPressOnBackBehavior() {
        return mLongPressOnBackBehavior != LONG_PRESS_BACK_NOTHING;
    }

    private void interceptScreenshotChord() {
        if (mScreenshotChordEnabled
                && mScreenshotChordVolumeDownKeyTriggered && mScreenshotChordPowerKeyTriggered
                && !mA11yShortcutChordVolumeUpKeyTriggered) {
            final long now = SystemClock.uptimeMillis();
            if (now <= mScreenshotChordVolumeDownKeyTime + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS
                    && now <= mScreenshotChordPowerKeyTime
                            + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS) {
                mScreenshotChordVolumeDownKeyConsumed = true;
                cancelPendingPowerKeyAction();
                mScreenshotRunnable.setScreenshotType(TAKE_SCREENSHOT_FULLSCREEN);
                mHandler.postDelayed(mScreenshotRunnable, getScreenshotChordLongPressDelay());
            }
        }
    }

    private void interceptAccessibilityShortcutChord() {
        if (mAccessibilityShortcutController.isAccessibilityShortcutAvailable(isKeyguardLocked())
                && mScreenshotChordVolumeDownKeyTriggered && mA11yShortcutChordVolumeUpKeyTriggered
                && !mScreenshotChordPowerKeyTriggered) {
            final long now = SystemClock.uptimeMillis();
            if (now <= mScreenshotChordVolumeDownKeyTime + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS
                    && now <= mA11yShortcutChordVolumeUpKeyTime
                    + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS) {
                mScreenshotChordVolumeDownKeyConsumed = true;
                mA11yShortcutChordVolumeUpKeyConsumed = true;
                mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_ACCESSIBILITY_SHORTCUT),
                        getAccessibilityShortcutTimeout());
            }
        }
    }

    private void interceptRingerToggleChord() {
        if (mRingerToggleChord != Settings.Secure.VOLUME_HUSH_OFF
                && mScreenshotChordPowerKeyTriggered && mA11yShortcutChordVolumeUpKeyTriggered) {
            final long now = SystemClock.uptimeMillis();
            if (now <= mA11yShortcutChordVolumeUpKeyTime + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS
                    && now <= mScreenshotChordPowerKeyTime
                    + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS) {
                mA11yShortcutChordVolumeUpKeyConsumed = true;
                cancelPendingPowerKeyAction();

                mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_RINGER_TOGGLE_CHORD),
                        getRingerToggleChordDelay());
            }
        }
    }

    private long getAccessibilityShortcutTimeout() {
        ViewConfiguration config = ViewConfiguration.get(mContext);
        return Settings.Secure.getIntForUser(mContext.getContentResolver(),
                Settings.Secure.ACCESSIBILITY_SHORTCUT_DIALOG_SHOWN, 0, mCurrentUserId) == 0
                ? config.getAccessibilityShortcutKeyTimeout()
                : config.getAccessibilityShortcutKeyTimeoutAfterConfirmation();
    }

    private long getScreenshotChordLongPressDelay() {
        if (mKeyguardDelegate.isShowing()) {
            // Double the time it takes to take a screenshot from the keyguard
            return (long) (KEYGUARD_SCREENSHOT_CHORD_DELAY_MULTIPLIER *
                    ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
        }
        return ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout();
    }

    private long getRingerToggleChordDelay() {
        // Always timeout like a tap
        return ViewConfiguration.getTapTimeout();
    }

    private void cancelPendingScreenshotChordAction() {
        mHandler.removeCallbacks(mScreenshotRunnable);
    }

    private void cancelPendingAccessibilityShortcutAction() {
        mHandler.removeMessages(MSG_ACCESSIBILITY_SHORTCUT);
    }

    private void cancelPendingRingerToggleChordAction() {
        mHandler.removeMessages(MSG_RINGER_TOGGLE_CHORD);
    }

    private final Runnable mEndCallLongPress = new Runnable() {
        @Override
        public void run() {
            mEndCallKeyHandled = true;
            performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
            showGlobalActionsInternal();
        }
    };

    private class ScreenshotRunnable implements Runnable {
        private int mScreenshotType = TAKE_SCREENSHOT_FULLSCREEN;

        public void setScreenshotType(int screenshotType) {
            mScreenshotType = screenshotType;
        }

        @Override
        public void run() {
            mScreenshotHelper.takeScreenshot(mScreenshotType,
                    mStatusBar != null && mStatusBar.isVisibleLw(),
                    mNavigationBar != null && mNavigationBar.isVisibleLw(), mHandler);
        }
    }

    private final ScreenshotRunnable mScreenshotRunnable = new ScreenshotRunnable();

    @Override
    public void showGlobalActions() {
        mHandler.removeMessages(MSG_DISPATCH_SHOW_GLOBAL_ACTIONS);
        mHandler.sendEmptyMessage(MSG_DISPATCH_SHOW_GLOBAL_ACTIONS);
    }

    void showGlobalActionsInternal() {
        if (mGlobalActions == null) {
            mGlobalActions = new GlobalActions(mContext, mWindowManagerFuncs);
        }
        final boolean keyguardShowing = isKeyguardShowingAndNotOccluded();
        mGlobalActions.showDialog(keyguardShowing, isDeviceProvisioned());
        if (keyguardShowing) {
            // since it took two seconds of long press to bring this up,
            // poke the wake lock so they have some time to see the dialog.
            mPowerManager.userActivity(SystemClock.uptimeMillis(), false);
        }
    }

    boolean isDeviceProvisioned() {
        return Settings.Global.getInt(
                mContext.getContentResolver(), Settings.Global.DEVICE_PROVISIONED, 0) != 0;
    }

    boolean isUserSetupComplete() {
        boolean isSetupComplete = Settings.Secure.getIntForUser(mContext.getContentResolver(),
                Settings.Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0;
        if (mHasFeatureLeanback) {
            isSetupComplete &= isTvUserSetupComplete();
        }
        return isSetupComplete;
    }

    private boolean isTvUserSetupComplete() {
        return Settings.Secure.getIntForUser(mContext.getContentResolver(),
                Settings.Secure.TV_USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0;
    }

    private void handleShortPressOnHome() {
        // Turn on the connected TV and switch HDMI input if we're a HDMI playback device.
        final HdmiControl hdmiControl = getHdmiControl();
        if (hdmiControl != null) {
            hdmiControl.turnOnTv();
        }

        // If there's a dream running then use home to escape the dream
        // but don't actually go home.
        if (mDreamManagerInternal != null && mDreamManagerInternal.isDreaming()) {
            mDreamManagerInternal.stopDream(false /*immediate*/);
            return;
        }

        // Go home!
        launchHomeFromHotKey();
    }

    /**
     * Creates an accessor to HDMI control service that performs the operation of
     * turning on TV (optional) and switching input to us. If HDMI control service
     * is not available or we're not a HDMI playback device, the operation is no-op.
     * @return {@link HdmiControl} instance if available, null otherwise.
     */
    private HdmiControl getHdmiControl() {
        if (null == mHdmiControl) {
            if (!mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_HDMI_CEC)) {
                return null;
            }
            HdmiControlManager manager = (HdmiControlManager) mContext.getSystemService(
                        Context.HDMI_CONTROL_SERVICE);
            HdmiPlaybackClient client = null;
            if (manager != null) {
                client = manager.getPlaybackClient();
            }
            mHdmiControl = new HdmiControl(client);
        }
        return mHdmiControl;
    }

    private static class HdmiControl {
        private final HdmiPlaybackClient mClient;

        private HdmiControl(HdmiPlaybackClient client) {
            mClient = client;
        }

        public void turnOnTv() {
            if (mClient == null) {
                return;
            }
            mClient.oneTouchPlay(new OneTouchPlayCallback() {
                @Override
                public void onComplete(int result) {
                    if (result != HdmiControlManager.RESULT_SUCCESS) {
                        Log.w(TAG, "One touch play failed: " + result);
                    }
                }
            });
        }
    }

    private void handleLongPressOnHome(int deviceId) {
        if (mLongPressOnHomeBehavior == LONG_PRESS_HOME_NOTHING) {
            return;
        }
        mHomeConsumed = true;
        performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
        switch (mLongPressOnHomeBehavior) {
            case LONG_PRESS_HOME_ALL_APPS:
                launchAllAppsAction();
                break;
            case LONG_PRESS_HOME_ASSIST:
                launchAssistAction(null, deviceId);
                break;
            default:
                Log.w(TAG, "Undefined home long press behavior: " + mLongPressOnHomeBehavior);
                break;
        }
    }

    private void launchAllAppsAction() {
        Intent intent = new Intent(Intent.ACTION_ALL_APPS);
        if (mHasFeatureLeanback) {
            final PackageManager pm = mContext.getPackageManager();
            Intent intentLauncher = new Intent(Intent.ACTION_MAIN);
            intentLauncher.addCategory(Intent.CATEGORY_HOME);
            ResolveInfo resolveInfo = pm.resolveActivityAsUser(intentLauncher,
                    PackageManager.MATCH_SYSTEM_ONLY,
                    mCurrentUserId);
            if (resolveInfo != null) {
                intent.setPackage(resolveInfo.activityInfo.packageName);
            }
        }
        startActivityAsUser(intent, UserHandle.CURRENT);
    }

    private void handleDoubleTapOnHome() {
        if (mDoubleTapOnHomeBehavior == DOUBLE_TAP_HOME_RECENT_SYSTEM_UI) {
            mHomeConsumed = true;
            toggleRecentApps();
        }
    }

    private void showPictureInPictureMenu(KeyEvent event) {
        if (DEBUG_INPUT) Log.d(TAG, "showPictureInPictureMenu event=" + event);
        mHandler.removeMessages(MSG_SHOW_PICTURE_IN_PICTURE_MENU);
        Message msg = mHandler.obtainMessage(MSG_SHOW_PICTURE_IN_PICTURE_MENU);
        msg.setAsynchronous(true);
        msg.sendToTarget();
    }

    private void showPictureInPictureMenuInternal() {
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.showPictureInPictureMenu();
        }
    }

    private final Runnable mHomeDoubleTapTimeoutRunnable = new Runnable() {
        @Override
        public void run() {
            if (mHomeDoubleTapPending) {
                mHomeDoubleTapPending = false;
                handleShortPressOnHome();
            }
        }
    };

    private boolean isRoundWindow() {
        return mContext.getResources().getConfiguration().isScreenRound();
    }

    /** {@inheritDoc} */
    @Override
    public void init(Context context, IWindowManager windowManager,
            WindowManagerFuncs windowManagerFuncs) {
        mContext = context;
        mWindowManager = windowManager;
        mWindowManagerFuncs = windowManagerFuncs;
        mWindowManagerInternal = LocalServices.getService(WindowManagerInternal.class);
        mActivityManagerInternal = LocalServices.getService(ActivityManagerInternal.class);
        mInputManagerInternal = LocalServices.getService(InputManagerInternal.class);
        mDreamManagerInternal = LocalServices.getService(DreamManagerInternal.class);
        mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
        mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
        mHasFeatureWatch = mContext.getPackageManager().hasSystemFeature(FEATURE_WATCH);
        mHasFeatureLeanback = mContext.getPackageManager().hasSystemFeature(FEATURE_LEANBACK);
        mAccessibilityShortcutController =
                new AccessibilityShortcutController(mContext, new Handler(), mCurrentUserId);
        // Init display burn-in protection
        boolean burnInProtectionEnabled = context.getResources().getBoolean(
                com.android.internal.R.bool.config_enableBurnInProtection);
        // Allow a system property to override this. Used by developer settings.
        boolean burnInProtectionDevMode =
                SystemProperties.getBoolean("persist.debug.force_burn_in", false);
        if (burnInProtectionEnabled || burnInProtectionDevMode) {
            final int minHorizontal;
            final int maxHorizontal;
            final int minVertical;
            final int maxVertical;
            final int maxRadius;
            if (burnInProtectionDevMode) {
                minHorizontal = -8;
                maxHorizontal = 8;
                minVertical = -8;
                maxVertical = -4;
                maxRadius = (isRoundWindow()) ? 6 : -1;
            } else {
                Resources resources = context.getResources();
                minHorizontal = resources.getInteger(
                        com.android.internal.R.integer.config_burnInProtectionMinHorizontalOffset);
                maxHorizontal = resources.getInteger(
                        com.android.internal.R.integer.config_burnInProtectionMaxHorizontalOffset);
                minVertical = resources.getInteger(
                        com.android.internal.R.integer.config_burnInProtectionMinVerticalOffset);
                maxVertical = resources.getInteger(
                        com.android.internal.R.integer.config_burnInProtectionMaxVerticalOffset);
                maxRadius = resources.getInteger(
                        com.android.internal.R.integer.config_burnInProtectionMaxRadius);
            }
            mBurnInProtectionHelper = new BurnInProtectionHelper(
                    context, minHorizontal, maxHorizontal, minVertical, maxVertical, maxRadius);
        }

        mHandler = new PolicyHandler();
        mWakeGestureListener = new MyWakeGestureListener(mContext, mHandler);
        mOrientationListener = new MyOrientationListener(mContext, mHandler);
        try {
            mOrientationListener.setCurrentRotation(windowManager.getDefaultDisplayRotation());
        } catch (RemoteException ex) { }
        mSettingsObserver = new SettingsObserver(mHandler);
        mSettingsObserver.observe();
        mShortcutManager = new ShortcutManager(context);
        mUiMode = context.getResources().getInteger(
                com.android.internal.R.integer.config_defaultUiModeType);
        mHomeIntent =  new Intent(Intent.ACTION_MAIN, null);
        mHomeIntent.addCategory(Intent.CATEGORY_HOME);
        mHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
        mEnableCarDockHomeCapture = context.getResources().getBoolean(
                com.android.internal.R.bool.config_enableCarDockHomeLaunch);
        mCarDockIntent =  new Intent(Intent.ACTION_MAIN, null);
        mCarDockIntent.addCategory(Intent.CATEGORY_CAR_DOCK);
        mCarDockIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
        mDeskDockIntent =  new Intent(Intent.ACTION_MAIN, null);
        mDeskDockIntent.addCategory(Intent.CATEGORY_DESK_DOCK);
        mDeskDockIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
        mVrHeadsetHomeIntent =  new Intent(Intent.ACTION_MAIN, null);
        mVrHeadsetHomeIntent.addCategory(Intent.CATEGORY_VR_HOME);
        mVrHeadsetHomeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);

        mPowerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
        mBroadcastWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
                "PhoneWindowManager.mBroadcastWakeLock");
        mPowerKeyWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
                "PhoneWindowManager.mPowerKeyWakeLock");
        mEnableShiftMenuBugReports = "1".equals(SystemProperties.get("ro.debuggable"));
        mSupportAutoRotation = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_supportAutoRotation);
        mLidOpenRotation = readRotation(
                com.android.internal.R.integer.config_lidOpenRotation);
        mCarDockRotation = readRotation(
                com.android.internal.R.integer.config_carDockRotation);
        mDeskDockRotation = readRotation(
                com.android.internal.R.integer.config_deskDockRotation);
        mUndockedHdmiRotation = readRotation(
                com.android.internal.R.integer.config_undockedHdmiRotation);
        mCarDockEnablesAccelerometer = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_carDockEnablesAccelerometer);
        mDeskDockEnablesAccelerometer = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_deskDockEnablesAccelerometer);
        mLidKeyboardAccessibility = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_lidKeyboardAccessibility);
        mLidNavigationAccessibility = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_lidNavigationAccessibility);
        mLidControlsScreenLock = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_lidControlsScreenLock);
        mLidControlsSleep = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_lidControlsSleep);
        mTranslucentDecorEnabled = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_enableTranslucentDecor);

        mAllowTheaterModeWakeFromKey = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowTheaterModeWakeFromKey);
        mAllowTheaterModeWakeFromPowerKey = mAllowTheaterModeWakeFromKey
                || mContext.getResources().getBoolean(
                    com.android.internal.R.bool.config_allowTheaterModeWakeFromPowerKey);
        mAllowTheaterModeWakeFromMotion = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowTheaterModeWakeFromMotion);
        mAllowTheaterModeWakeFromMotionWhenNotDreaming = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowTheaterModeWakeFromMotionWhenNotDreaming);
        mAllowTheaterModeWakeFromCameraLens = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowTheaterModeWakeFromCameraLens);
        mAllowTheaterModeWakeFromLidSwitch = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowTheaterModeWakeFromLidSwitch);
        mAllowTheaterModeWakeFromWakeGesture = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowTheaterModeWakeFromGesture);

        mGoToSleepOnButtonPressTheaterMode = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_goToSleepOnButtonPressTheaterMode);

        mSupportLongPressPowerWhenNonInteractive = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_supportLongPressPowerWhenNonInteractive);

        mLongPressOnBackBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_longPressOnBackBehavior);

        mShortPressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_shortPressOnPowerBehavior);
        mLongPressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_longPressOnPowerBehavior);
        mVeryLongPressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_veryLongPressOnPowerBehavior);
        mDoublePressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_doublePressOnPowerBehavior);
        mTriplePressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_triplePressOnPowerBehavior);
        mShortPressOnSleepBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_shortPressOnSleepBehavior);
        mVeryLongPressTimeout = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_veryLongPressTimeout);
        mAllowStartActivityForLongPressOnPowerDuringSetup = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_allowStartActivityForLongPressOnPowerInSetup);

        mUseTvRouting = AudioSystem.getPlatformType(mContext) == AudioSystem.PLATFORM_TELEVISION;

        mHandleVolumeKeysInWM = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_handleVolumeKeysInWindowManager);

        readConfigurationDependentBehaviors();

        mAccessibilityManager = (AccessibilityManager) context.getSystemService(
                Context.ACCESSIBILITY_SERVICE);

        // register for dock events
        IntentFilter filter = new IntentFilter();
        filter.addAction(UiModeManager.ACTION_ENTER_CAR_MODE);
        filter.addAction(UiModeManager.ACTION_EXIT_CAR_MODE);
        filter.addAction(UiModeManager.ACTION_ENTER_DESK_MODE);
        filter.addAction(UiModeManager.ACTION_EXIT_DESK_MODE);
        filter.addAction(Intent.ACTION_DOCK_EVENT);
        Intent intent = context.registerReceiver(mDockReceiver, filter);
        if (intent != null) {
            // Retrieve current sticky dock event broadcast.
            mDockMode = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
                    Intent.EXTRA_DOCK_STATE_UNDOCKED);
        }

        // register for dream-related broadcasts
        filter = new IntentFilter();
        filter.addAction(Intent.ACTION_DREAMING_STARTED);
        filter.addAction(Intent.ACTION_DREAMING_STOPPED);
        context.registerReceiver(mDreamReceiver, filter);

        // register for multiuser-relevant broadcasts
        filter = new IntentFilter(Intent.ACTION_USER_SWITCHED);
        context.registerReceiver(mMultiuserReceiver, filter);

        // monitor for system gestures
        // TODO(multi-display): Needs to be display specific.
        mSystemGestures = new SystemGesturesPointerEventListener(context,
                new SystemGesturesPointerEventListener.Callbacks() {
                    @Override
                    public void onSwipeFromTop() {
                        if (mStatusBar != null) {
                            requestTransientBars(mStatusBar);
                        }
                    }
                    @Override
                    public void onSwipeFromBottom() {
                        if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_BOTTOM) {
                            requestTransientBars(mNavigationBar);
                        }
                    }
                    @Override
                    public void onSwipeFromRight() {
                        if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_RIGHT) {
                            requestTransientBars(mNavigationBar);
                        }
                    }
                    @Override
                    public void onSwipeFromLeft() {
                        if (mNavigationBar != null && mNavigationBarPosition == NAV_BAR_LEFT) {
                            requestTransientBars(mNavigationBar);
                        }
                    }
                    @Override
                    public void onFling(int duration) {
                        if (mPowerManagerInternal != null) {
                            mPowerManagerInternal.powerHint(
                                    PowerHint.INTERACTION, duration);
                        }
                    }
                    @Override
                    public void onDebug() {
                        // no-op
                    }
                    @Override
                    public void onDown() {
                        mOrientationListener.onTouchStart();
                    }
                    @Override
                    public void onUpOrCancel() {
                        mOrientationListener.onTouchEnd();
                    }
                    @Override
                    public void onMouseHoverAtTop() {
                        mHandler.removeMessages(MSG_REQUEST_TRANSIENT_BARS);
                        Message msg = mHandler.obtainMessage(MSG_REQUEST_TRANSIENT_BARS);
                        msg.arg1 = MSG_REQUEST_TRANSIENT_BARS_ARG_STATUS;
                        mHandler.sendMessageDelayed(msg, 500);
                    }
                    @Override
                    public void onMouseHoverAtBottom() {
                        mHandler.removeMessages(MSG_REQUEST_TRANSIENT_BARS);
                        Message msg = mHandler.obtainMessage(MSG_REQUEST_TRANSIENT_BARS);
                        msg.arg1 = MSG_REQUEST_TRANSIENT_BARS_ARG_NAVIGATION;
                        mHandler.sendMessageDelayed(msg, 500);
                    }
                    @Override
                    public void onMouseLeaveFromEdge() {
                        mHandler.removeMessages(MSG_REQUEST_TRANSIENT_BARS);
                    }
                });
        mImmersiveModeConfirmation = new ImmersiveModeConfirmation(mContext);
        mWindowManagerFuncs.registerPointerEventListener(mSystemGestures);

        mVibrator = (Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);
        mLongPressVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_longPressVibePattern);
        mCalendarDateVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_calendarDateVibePattern);
        mSafeModeEnabledVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_safeModeEnabledVibePattern);

        mScreenshotChordEnabled = mContext.getResources().getBoolean(
                com.android.internal.R.bool.config_enableScreenshotChord);

        mGlobalKeyManager = new GlobalKeyManager(mContext);

        // Controls rotation and the like.
        initializeHdmiState();

        // Match current screen state.
        if (!mPowerManager.isInteractive()) {
            startedGoingToSleep(WindowManagerPolicy.OFF_BECAUSE_OF_USER);
            finishedGoingToSleep(WindowManagerPolicy.OFF_BECAUSE_OF_USER);
        }

        mWindowManagerInternal.registerAppTransitionListener(
                mStatusBarController.getAppTransitionListener());
        mWindowManagerInternal.registerAppTransitionListener(new AppTransitionListener() {
            @Override
            public int onAppTransitionStartingLocked(int transit, IBinder openToken,
                    IBinder closeToken, long duration, long statusBarAnimationStartTime,
                    long statusBarAnimationDuration) {
                return handleStartTransitionForKeyguardLw(transit, duration);
            }

            @Override
            public void onAppTransitionCancelledLocked(int transit) {
                handleStartTransitionForKeyguardLw(transit, 0 /* duration */);
            }
        });
        mKeyguardDelegate = new KeyguardServiceDelegate(mContext,
                new StateCallback() {
                    @Override
                    public void onTrustedChanged() {
                        mWindowManagerFuncs.notifyKeyguardTrustedChanged();
                    }
                });
        mScreenshotHelper = new ScreenshotHelper(mContext);
    }

    /**
     * Read values from config.xml that may be overridden depending on
     * the configuration of the device.
     * eg. Disable long press on home goes to recents on sw600dp.
     */
    private void readConfigurationDependentBehaviors() {
        final Resources res = mContext.getResources();

        mLongPressOnHomeBehavior = res.getInteger(
                com.android.internal.R.integer.config_longPressOnHomeBehavior);
        if (mLongPressOnHomeBehavior < LONG_PRESS_HOME_NOTHING ||
                mLongPressOnHomeBehavior > LAST_LONG_PRESS_HOME_BEHAVIOR) {
            mLongPressOnHomeBehavior = LONG_PRESS_HOME_NOTHING;
        }

        mDoubleTapOnHomeBehavior = res.getInteger(
                com.android.internal.R.integer.config_doubleTapOnHomeBehavior);
        if (mDoubleTapOnHomeBehavior < DOUBLE_TAP_HOME_NOTHING ||
                mDoubleTapOnHomeBehavior > DOUBLE_TAP_HOME_RECENT_SYSTEM_UI) {
            mDoubleTapOnHomeBehavior = LONG_PRESS_HOME_NOTHING;
        }

        mShortPressOnWindowBehavior = SHORT_PRESS_WINDOW_NOTHING;
        if (mContext.getPackageManager().hasSystemFeature(FEATURE_PICTURE_IN_PICTURE)) {
            mShortPressOnWindowBehavior = SHORT_PRESS_WINDOW_PICTURE_IN_PICTURE;
        }

        mNavBarOpacityMode = res.getInteger(
                com.android.internal.R.integer.config_navBarOpacityMode);
    }

    @Override
    public void setInitialDisplaySize(Display display, int width, int height, int density) {
        // This method might be called before the policy has been fully initialized
        // or for other displays we don't care about.
        // TODO(multi-display): Define policy for secondary displays.
        if (mContext == null || display.getDisplayId() != DEFAULT_DISPLAY) {
            return;
        }
        mDisplay = display;

        final Resources res = mContext.getResources();
        int shortSize, longSize;
        if (width > height) {
            shortSize = height;
            longSize = width;
            mLandscapeRotation = Surface.ROTATION_0;
            mSeascapeRotation = Surface.ROTATION_180;
            if (res.getBoolean(com.android.internal.R.bool.config_reverseDefaultRotation)) {
                mPortraitRotation = Surface.ROTATION_90;
                mUpsideDownRotation = Surface.ROTATION_270;
            } else {
                mPortraitRotation = Surface.ROTATION_270;
                mUpsideDownRotation = Surface.ROTATION_90;
            }
        } else {
            shortSize = width;
            longSize = height;
            mPortraitRotation = Surface.ROTATION_0;
            mUpsideDownRotation = Surface.ROTATION_180;
            if (res.getBoolean(com.android.internal.R.bool.config_reverseDefaultRotation)) {
                mLandscapeRotation = Surface.ROTATION_270;
                mSeascapeRotation = Surface.ROTATION_90;
            } else {
                mLandscapeRotation = Surface.ROTATION_90;
                mSeascapeRotation = Surface.ROTATION_270;
            }
        }

        // SystemUI (status bar) layout policy
        int shortSizeDp = shortSize * DisplayMetrics.DENSITY_DEFAULT / density;
        int longSizeDp = longSize * DisplayMetrics.DENSITY_DEFAULT / density;

        // Allow the navigation bar to move on non-square small devices (phones).
        mNavigationBarCanMove = width != height && shortSizeDp < 600;

        mHasNavigationBar = res.getBoolean(com.android.internal.R.bool.config_showNavigationBar);

        // Allow a system property to override this. Used by the emulator.
        // See also hasNavigationBar().
        String navBarOverride = SystemProperties.get("qemu.hw.mainkeys");
        if ("1".equals(navBarOverride)) {
            mHasNavigationBar = false;
        } else if ("0".equals(navBarOverride)) {
            mHasNavigationBar = true;
        }

        // For demo purposes, allow the rotation of the HDMI display to be controlled.
        // By default, HDMI locks rotation to landscape.
        if ("portrait".equals(SystemProperties.get("persist.demo.hdmirotation"))) {
            mDemoHdmiRotation = mPortraitRotation;
        } else {
            mDemoHdmiRotation = mLandscapeRotation;
        }
        mDemoHdmiRotationLock = SystemProperties.getBoolean("persist.demo.hdmirotationlock", false);

        // For demo purposes, allow the rotation of the remote display to be controlled.
        // By default, remote display locks rotation to landscape.
        if ("portrait".equals(SystemProperties.get("persist.demo.remoterotation"))) {
            mDemoRotation = mPortraitRotation;
        } else {
            mDemoRotation = mLandscapeRotation;
        }
        mDemoRotationLock = SystemProperties.getBoolean(
                "persist.demo.rotationlock", false);

        // Only force the default orientation if the screen is xlarge, at least 960dp x 720dp, per
        // http://developer.android.com/guide/practices/screens_support.html#range
        // For car, ignore the dp limitation. It's physically impossible to rotate the car's screen
        // so if the orientation is forced, we need to respect that no matter what.
        final boolean isCar = mContext.getPackageManager().hasSystemFeature(
                PackageManager.FEATURE_AUTOMOTIVE);
        // For TV, it's usually 960dp x 540dp, ignore the size limitation.
        // so if the orientation is forced, we need to respect that no matter what.
        final boolean isTv = mContext.getPackageManager().hasSystemFeature(
                PackageManager.FEATURE_LEANBACK);
        mForceDefaultOrientation = ((longSizeDp >= 960 && shortSizeDp >= 720) || isCar || isTv) &&
                res.getBoolean(com.android.internal.R.bool.config_forceDefaultOrientation) &&
                // For debug purposes the next line turns this feature off with:
                // $ adb shell setprop config.override_forced_orient true
                // $ adb shell wm size reset
                !"true".equals(SystemProperties.get("config.override_forced_orient"));
    }

    /**
     * @return whether the navigation bar can be hidden, e.g. the device has a
     *         navigation bar and touch exploration is not enabled
     */
    private boolean canHideNavigationBar() {
        return mHasNavigationBar;
    }

    @Override
    public boolean isDefaultOrientationForced() {
        return mForceDefaultOrientation;
    }

    public void updateSettings() {
        ContentResolver resolver = mContext.getContentResolver();
        boolean updateRotation = false;
        synchronized (mLock) {
            mEndcallBehavior = Settings.System.getIntForUser(resolver,
                    Settings.System.END_BUTTON_BEHAVIOR,
                    Settings.System.END_BUTTON_BEHAVIOR_DEFAULT,
                    UserHandle.USER_CURRENT);
            mIncallPowerBehavior = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR,
                    Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_DEFAULT,
                    UserHandle.USER_CURRENT);
            mIncallBackBehavior = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR,
                    Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR_DEFAULT,
                    UserHandle.USER_CURRENT);
            mSystemNavigationKeysEnabled = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.SYSTEM_NAVIGATION_KEYS_ENABLED,
                    0, UserHandle.USER_CURRENT) == 1;
            mRingerToggleChord = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.VOLUME_HUSH_GESTURE, VOLUME_HUSH_OFF,
                    UserHandle.USER_CURRENT);
            if (!mContext.getResources()
                    .getBoolean(com.android.internal.R.bool.config_volumeHushGestureEnabled)) {
                mRingerToggleChord = Settings.Secure.VOLUME_HUSH_OFF;
            }
            // Configure rotation suggestions.
            int showRotationSuggestions = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.SHOW_ROTATION_SUGGESTIONS,
                    Settings.Secure.SHOW_ROTATION_SUGGESTIONS_DEFAULT,
                    UserHandle.USER_CURRENT);
            if (mShowRotationSuggestions != showRotationSuggestions) {
                mShowRotationSuggestions = showRotationSuggestions;
                updateOrientationListenerLp(); // Enable, disable the orientation listener
            }

            // Configure wake gesture.
            boolean wakeGestureEnabledSetting = Settings.Secure.getIntForUser(resolver,
                    Settings.Secure.WAKE_GESTURE_ENABLED, 0,
                    UserHandle.USER_CURRENT) != 0;
            if (mWakeGestureEnabledSetting != wakeGestureEnabledSetting) {
                mWakeGestureEnabledSetting = wakeGestureEnabledSetting;
                updateWakeGestureListenerLp();
            }

            // Configure rotation lock.
            int userRotation = Settings.System.getIntForUser(resolver,
                    Settings.System.USER_ROTATION, Surface.ROTATION_0,
                    UserHandle.USER_CURRENT);
            if (mUserRotation != userRotation) {
                mUserRotation = userRotation;
                updateRotation = true;
            }
            int userRotationMode = Settings.System.getIntForUser(resolver,
                    Settings.System.ACCELEROMETER_ROTATION, 0, UserHandle.USER_CURRENT) != 0 ?
                            WindowManagerPolicy.USER_ROTATION_FREE :
                                    WindowManagerPolicy.USER_ROTATION_LOCKED;
            if (mUserRotationMode != userRotationMode) {
                mUserRotationMode = userRotationMode;
                updateRotation = true;
                updateOrientationListenerLp();
            }

            if (mSystemReady) {
                int pointerLocation = Settings.System.getIntForUser(resolver,
                        Settings.System.POINTER_LOCATION, 0, UserHandle.USER_CURRENT);
                if (mPointerLocationMode != pointerLocation) {
                    mPointerLocationMode = pointerLocation;
                    mHandler.sendEmptyMessage(pointerLocation != 0 ?
                            MSG_ENABLE_POINTER_LOCATION : MSG_DISABLE_POINTER_LOCATION);
                }
            }
            // use screen off timeout setting as the timeout for the lockscreen
            mLockScreenTimeout = Settings.System.getIntForUser(resolver,
                    Settings.System.SCREEN_OFF_TIMEOUT, 0, UserHandle.USER_CURRENT);
            String imId = Settings.Secure.getStringForUser(resolver,
                    Settings.Secure.DEFAULT_INPUT_METHOD, UserHandle.USER_CURRENT);
            boolean hasSoftInput = imId != null && imId.length() > 0;
            if (mHasSoftInput != hasSoftInput) {
                mHasSoftInput = hasSoftInput;
                updateRotation = true;
            }
            if (mImmersiveModeConfirmation != null) {
                mImmersiveModeConfirmation.loadSetting(mCurrentUserId);
            }
        }
        synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
            PolicyControl.reloadFromSetting(mContext);
        }
        if (updateRotation) {
            updateRotation(true);
        }
    }

    private void updateWakeGestureListenerLp() {
        if (shouldEnableWakeGestureLp()) {
            mWakeGestureListener.requestWakeUpTrigger();
        } else {
            mWakeGestureListener.cancelWakeUpTrigger();
        }
    }

    private boolean shouldEnableWakeGestureLp() {
        return mWakeGestureEnabledSetting && !mAwake
                && (!mLidControlsSleep || mLidState != LID_CLOSED)
                && mWakeGestureListener.isSupported();
    }

    private void enablePointerLocation() {
        if (mPointerLocationView == null) {
            mPointerLocationView = new PointerLocationView(mContext);
            mPointerLocationView.setPrintCoords(false);
            WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                    WindowManager.LayoutParams.MATCH_PARENT,
                    WindowManager.LayoutParams.MATCH_PARENT);
            lp.type = WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
            lp.flags = WindowManager.LayoutParams.FLAG_FULLSCREEN
                    | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
                    | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
            if (ActivityManager.isHighEndGfx()) {
                lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
                lp.privateFlags |=
                        WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED;
            }
            lp.format = PixelFormat.TRANSLUCENT;
            lp.setTitle("PointerLocation");
            WindowManager wm = (WindowManager) mContext.getSystemService(WINDOW_SERVICE);
            lp.inputFeatures |= WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL;
            wm.addView(mPointerLocationView, lp);
            mWindowManagerFuncs.registerPointerEventListener(mPointerLocationView);
        }
    }

    private void disablePointerLocation() {
        if (mPointerLocationView != null) {
            mWindowManagerFuncs.unregisterPointerEventListener(mPointerLocationView);
            WindowManager wm = (WindowManager) mContext.getSystemService(WINDOW_SERVICE);
            wm.removeView(mPointerLocationView);
            mPointerLocationView = null;
        }
    }

    private int readRotation(int resID) {
        try {
            int rotation = mContext.getResources().getInteger(resID);
            switch (rotation) {
                case 0:
                    return Surface.ROTATION_0;
                case 90:
                    return Surface.ROTATION_90;
                case 180:
                    return Surface.ROTATION_180;
                case 270:
                    return Surface.ROTATION_270;
            }
        } catch (Resources.NotFoundException e) {
            // fall through
        }
        return -1;
    }

    /** {@inheritDoc} */
    @Override
    public int checkAddPermission(WindowManager.LayoutParams attrs, int[] outAppOp) {
        final int type = attrs.type;
        final boolean isRoundedCornerOverlay =
                (attrs.privateFlags & PRIVATE_FLAG_IS_ROUNDED_CORNERS_OVERLAY) != 0;

        if (isRoundedCornerOverlay && mContext.checkCallingOrSelfPermission(INTERNAL_SYSTEM_WINDOW)
                != PERMISSION_GRANTED) {
            return ADD_PERMISSION_DENIED;
        }

        outAppOp[0] = AppOpsManager.OP_NONE;

        if (!((type >= FIRST_APPLICATION_WINDOW && type <= LAST_APPLICATION_WINDOW)
                || (type >= FIRST_SUB_WINDOW && type <= LAST_SUB_WINDOW)
                || (type >= FIRST_SYSTEM_WINDOW && type <= LAST_SYSTEM_WINDOW))) {
            return WindowManagerGlobal.ADD_INVALID_TYPE;
        }

        if (type < FIRST_SYSTEM_WINDOW || type > LAST_SYSTEM_WINDOW) {
            // Window manager will make sure these are okay.
            return ADD_OKAY;
        }

        if (!isSystemAlertWindowType(type)) {
            switch (type) {
                case TYPE_TOAST:
                    // Only apps that target older than O SDK can add window without a token, after
                    // that we require a token so apps cannot add toasts directly as the token is
                    // added by the notification system.
                    // Window manager does the checking for this.
                    outAppOp[0] = OP_TOAST_WINDOW;
                    return ADD_OKAY;
                case TYPE_DREAM:
                case TYPE_INPUT_METHOD:
                case TYPE_WALLPAPER:
                case TYPE_PRESENTATION:
                case TYPE_PRIVATE_PRESENTATION:
                case TYPE_VOICE_INTERACTION:
                case TYPE_ACCESSIBILITY_OVERLAY:
                case TYPE_QS_DIALOG:
                    // The window manager will check these.
                    return ADD_OKAY;
            }
            return mContext.checkCallingOrSelfPermission(INTERNAL_SYSTEM_WINDOW)
                    == PERMISSION_GRANTED ? ADD_OKAY : ADD_PERMISSION_DENIED;
        }

        // Things get a little more interesting for alert windows...
        outAppOp[0] = OP_SYSTEM_ALERT_WINDOW;

        final int callingUid = Binder.getCallingUid();
        // system processes will be automatically granted privilege to draw
        if (UserHandle.getAppId(callingUid) == Process.SYSTEM_UID) {
            return ADD_OKAY;
        }

        ApplicationInfo appInfo;
        try {
            appInfo = mContext.getPackageManager().getApplicationInfoAsUser(
                            attrs.packageName,
                            0 /* flags */,
                            UserHandle.getUserId(callingUid));
        } catch (PackageManager.NameNotFoundException e) {
            appInfo = null;
        }

        if (appInfo == null || (type != TYPE_APPLICATION_OVERLAY && appInfo.targetSdkVersion >= O)) {
            /**
             * Apps targeting >= {@link Build.VERSION_CODES#O} are required to hold
             * {@link android.Manifest.permission#INTERNAL_SYSTEM_WINDOW} (system signature apps)
             * permission to add alert windows that aren't
             * {@link android.view.WindowManager.LayoutParams#TYPE_APPLICATION_OVERLAY}.
             */
            return (mContext.checkCallingOrSelfPermission(INTERNAL_SYSTEM_WINDOW)
                    == PERMISSION_GRANTED) ? ADD_OKAY : ADD_PERMISSION_DENIED;
        }

        // check if user has enabled this operation. SecurityException will be thrown if this app
        // has not been allowed by the user
        final int mode = mAppOpsManager.noteOpNoThrow(outAppOp[0], callingUid, attrs.packageName);
        switch (mode) {
            case AppOpsManager.MODE_ALLOWED:
            case AppOpsManager.MODE_IGNORED:
                // although we return ADD_OKAY for MODE_IGNORED, the added window will
                // actually be hidden in WindowManagerService
                return ADD_OKAY;
            case AppOpsManager.MODE_ERRORED:
                // Don't crash legacy apps
                if (appInfo.targetSdkVersion < M) {
                    return ADD_OKAY;
                }
                return ADD_PERMISSION_DENIED;
            default:
                // in the default mode, we will make a decision here based on
                // checkCallingPermission()
                return (mContext.checkCallingOrSelfPermission(SYSTEM_ALERT_WINDOW)
                        == PERMISSION_GRANTED) ? ADD_OKAY : ADD_PERMISSION_DENIED;
        }
    }

    @Override
    public boolean checkShowToOwnerOnly(WindowManager.LayoutParams attrs) {

        // If this switch statement is modified, modify the comment in the declarations of
        // the type in {@link WindowManager.LayoutParams} as well.
        switch (attrs.type) {
            default:
                // These are the windows that by default are shown only to the user that created
                // them. If this needs to be overridden, set
                // {@link WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS} in
                // {@link WindowManager.LayoutParams}. Note that permission
                // {@link android.Manifest.permission.INTERNAL_SYSTEM_WINDOW} is required as well.
                if ((attrs.privateFlags & PRIVATE_FLAG_SHOW_FOR_ALL_USERS) == 0) {
                    return true;
                }
                break;

            // These are the windows that by default are shown to all users. However, to
            // protect against spoofing, check permissions below.
            case TYPE_APPLICATION_STARTING:
            case TYPE_BOOT_PROGRESS:
            case TYPE_DISPLAY_OVERLAY:
            case TYPE_INPUT_CONSUMER:
            case TYPE_KEYGUARD_DIALOG:
            case TYPE_MAGNIFICATION_OVERLAY:
            case TYPE_NAVIGATION_BAR:
            case TYPE_NAVIGATION_BAR_PANEL:
            case TYPE_PHONE:
            case TYPE_POINTER:
            case TYPE_PRIORITY_PHONE:
            case TYPE_SEARCH_BAR:
            case TYPE_STATUS_BAR:
            case TYPE_STATUS_BAR_PANEL:
            case TYPE_STATUS_BAR_SUB_PANEL:
            case TYPE_SYSTEM_DIALOG:
            case TYPE_VOLUME_OVERLAY:
            case TYPE_PRESENTATION:
            case TYPE_PRIVATE_PRESENTATION:
            case TYPE_DOCK_DIVIDER:
                break;
        }

        // Check if third party app has set window to system window type.
        return mContext.checkCallingOrSelfPermission(INTERNAL_SYSTEM_WINDOW) != PERMISSION_GRANTED;
    }

    @Override
    public void adjustWindowParamsLw(WindowState win, WindowManager.LayoutParams attrs,
            boolean hasStatusBarServicePermission) {

        final boolean isScreenDecor = (attrs.privateFlags & PRIVATE_FLAG_IS_SCREEN_DECOR) != 0;
        if (mScreenDecorWindows.contains(win)) {
            if (!isScreenDecor) {
                // No longer has the flag set, so remove from the set.
                mScreenDecorWindows.remove(win);
            }
        } else if (isScreenDecor && hasStatusBarServicePermission) {
            mScreenDecorWindows.add(win);
        }

        switch (attrs.type) {
            case TYPE_SYSTEM_OVERLAY:
            case TYPE_SECURE_SYSTEM_OVERLAY:
                // These types of windows can't receive input events.
                attrs.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                        | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
                attrs.flags &= ~WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;
                break;
            case TYPE_DREAM:
            case TYPE_WALLPAPER:
                // Dreams and wallpapers don't have an app window token and can thus not be
                // letterboxed. Hence always let them extend under the cutout.
                attrs.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
                break;
            case TYPE_STATUS_BAR:

                // If the Keyguard is in a hidden state (occluded by another window), we force to
                // remove the wallpaper and keyguard flag so that any change in-flight after setting
                // the keyguard as occluded wouldn't set these flags again.
                // See {@link #processKeyguardSetHiddenResultLw}.
                if (mKeyguardOccluded) {
                    attrs.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
                    attrs.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
                }
                break;

            case TYPE_SCREENSHOT:
                attrs.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
                break;

            case TYPE_TOAST:
                // While apps should use the dedicated toast APIs to add such windows
                // it possible legacy apps to add the window directly. Therefore, we
                // make windows added directly by the app behave as a toast as much
                // as possible in terms of timeout and animation.
                if (attrs.hideTimeoutMilliseconds < 0
                        || attrs.hideTimeoutMilliseconds > TOAST_WINDOW_TIMEOUT) {
                    attrs.hideTimeoutMilliseconds = TOAST_WINDOW_TIMEOUT;
                }
                attrs.windowAnimations = com.android.internal.R.style.Animation_Toast;
                break;
        }

        if (attrs.type != TYPE_STATUS_BAR) {
            // The status bar is the only window allowed to exhibit keyguard behavior.
            attrs.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
        }
    }

    private int getImpliedSysUiFlagsForLayout(LayoutParams attrs) {
        int impliedFlags = 0;
        if ((attrs.flags & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0) {
            impliedFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
        }
        final boolean forceWindowDrawsStatusBarBackground =
                (attrs.privateFlags & PRIVATE_FLAG_FORCE_DRAW_STATUS_BAR_BACKGROUND) != 0;
        if ((attrs.flags & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0
                || forceWindowDrawsStatusBarBackground
                        && attrs.height == MATCH_PARENT && attrs.width == MATCH_PARENT) {
            impliedFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
        }
        return impliedFlags;
    }

    void readLidState() {
        mLidState = mWindowManagerFuncs.getLidState();
    }

    private void readCameraLensCoverState() {
        mCameraLensCoverState = mWindowManagerFuncs.getCameraLensCoverState();
    }

    private boolean isHidden(int accessibilityMode) {
        switch (accessibilityMode) {
            case 1:
                return mLidState == LID_CLOSED;
            case 2:
                return mLidState == LID_OPEN;
            default:
                return false;
        }
    }

    /** {@inheritDoc} */
    @Override
    public void adjustConfigurationLw(Configuration config, int keyboardPresence,
            int navigationPresence) {
        mHaveBuiltInKeyboard = (keyboardPresence & PRESENCE_INTERNAL) != 0;

        readConfigurationDependentBehaviors();
        readLidState();

        if (config.keyboard == Configuration.KEYBOARD_NOKEYS
                || (keyboardPresence == PRESENCE_INTERNAL
                        && isHidden(mLidKeyboardAccessibility))) {
            config.hardKeyboardHidden = Configuration.HARDKEYBOARDHIDDEN_YES;
            if (!mHasSoftInput) {
                config.keyboardHidden = Configuration.KEYBOARDHIDDEN_YES;
            }
        }

        if (config.navigation == Configuration.NAVIGATION_NONAV
                || (navigationPresence == PRESENCE_INTERNAL
                        && isHidden(mLidNavigationAccessibility))) {
            config.navigationHidden = Configuration.NAVIGATIONHIDDEN_YES;
        }
    }

    @Override
    public void onOverlayChangedLw() {
        onConfigurationChanged();
    }

    @Override
    public void onConfigurationChanged() {
        // TODO(multi-display): Define policy for secondary displays.
        Context uiContext = getSystemUiContext();
        final Resources res = uiContext.getResources();

        mStatusBarHeightForRotation[mPortraitRotation] =
                mStatusBarHeightForRotation[mUpsideDownRotation] = res.getDimensionPixelSize(
                                com.android.internal.R.dimen.status_bar_height_portrait);
        mStatusBarHeightForRotation[mLandscapeRotation] =
                mStatusBarHeightForRotation[mSeascapeRotation] = res.getDimensionPixelSize(
                        com.android.internal.R.dimen.status_bar_height_landscape);

        // Height of the navigation bar when presented horizontally at bottom
        mNavigationBarHeightForRotationDefault[mPortraitRotation] =
        mNavigationBarHeightForRotationDefault[mUpsideDownRotation] =
                res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height);
        mNavigationBarHeightForRotationDefault[mLandscapeRotation] =
        mNavigationBarHeightForRotationDefault[mSeascapeRotation] = res.getDimensionPixelSize(
                com.android.internal.R.dimen.navigation_bar_height_landscape);

        // Width of the navigation bar when presented vertically along one side
        mNavigationBarWidthForRotationDefault[mPortraitRotation] =
        mNavigationBarWidthForRotationDefault[mUpsideDownRotation] =
        mNavigationBarWidthForRotationDefault[mLandscapeRotation] =
        mNavigationBarWidthForRotationDefault[mSeascapeRotation] =
                res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_width);

        if (ALTERNATE_CAR_MODE_NAV_SIZE) {
            // Height of the navigation bar when presented horizontally at bottom
            mNavigationBarHeightForRotationInCarMode[mPortraitRotation] =
            mNavigationBarHeightForRotationInCarMode[mUpsideDownRotation] =
                    res.getDimensionPixelSize(
                            com.android.internal.R.dimen.navigation_bar_height_car_mode);
            mNavigationBarHeightForRotationInCarMode[mLandscapeRotation] =
            mNavigationBarHeightForRotationInCarMode[mSeascapeRotation] = res.getDimensionPixelSize(
                    com.android.internal.R.dimen.navigation_bar_height_landscape_car_mode);

            // Width of the navigation bar when presented vertically along one side
            mNavigationBarWidthForRotationInCarMode[mPortraitRotation] =
            mNavigationBarWidthForRotationInCarMode[mUpsideDownRotation] =
            mNavigationBarWidthForRotationInCarMode[mLandscapeRotation] =
            mNavigationBarWidthForRotationInCarMode[mSeascapeRotation] =
                    res.getDimensionPixelSize(
                            com.android.internal.R.dimen.navigation_bar_width_car_mode);
        }
    }

    @VisibleForTesting
    Context getSystemUiContext() {
        return ActivityThread.currentActivityThread().getSystemUiContext();
    }

    @Override
    public int getMaxWallpaperLayer() {
        return getWindowLayerFromTypeLw(TYPE_STATUS_BAR);
    }

    private int getNavigationBarWidth(int rotation, int uiMode) {
        if (ALTERNATE_CAR_MODE_NAV_SIZE && (uiMode & UI_MODE_TYPE_MASK) == UI_MODE_TYPE_CAR) {
            return mNavigationBarWidthForRotationInCarMode[rotation];
        } else {
            return mNavigationBarWidthForRotationDefault[rotation];
        }
    }

    @Override
    public int getNonDecorDisplayWidth(int fullWidth, int fullHeight, int rotation, int uiMode,
            int displayId, DisplayCutout displayCutout) {
        int width = fullWidth;
        // TODO(multi-display): Support navigation bar on secondary displays.
        if (displayId == DEFAULT_DISPLAY && mHasNavigationBar) {
            // For a basic navigation bar, when we are in landscape mode we place
            // the navigation bar to the side.
            if (mNavigationBarCanMove && fullWidth > fullHeight) {
                width -= getNavigationBarWidth(rotation, uiMode);
            }
        }
        if (displayCutout != null) {
            width -= displayCutout.getSafeInsetLeft() + displayCutout.getSafeInsetRight();
        }
        return width;
    }

    private int getNavigationBarHeight(int rotation, int uiMode) {
        if (ALTERNATE_CAR_MODE_NAV_SIZE && (uiMode & UI_MODE_TYPE_MASK) == UI_MODE_TYPE_CAR) {
            return mNavigationBarHeightForRotationInCarMode[rotation];
        } else {
            return mNavigationBarHeightForRotationDefault[rotation];
        }
    }

    @Override
    public int getNonDecorDisplayHeight(int fullWidth, int fullHeight, int rotation, int uiMode,
            int displayId, DisplayCutout displayCutout) {
        int height = fullHeight;
        // TODO(multi-display): Support navigation bar on secondary displays.
        if (displayId == DEFAULT_DISPLAY && mHasNavigationBar) {
            // For a basic navigation bar, when we are in portrait mode we place
            // the navigation bar to the bottom.
            if (!mNavigationBarCanMove || fullWidth < fullHeight) {
                height -= getNavigationBarHeight(rotation, uiMode);
            }
        }
        if (displayCutout != null) {
            height -= displayCutout.getSafeInsetTop() + displayCutout.getSafeInsetBottom();
        }
        return height;
    }

    @Override
    public int getConfigDisplayWidth(int fullWidth, int fullHeight, int rotation, int uiMode,
            int displayId, DisplayCutout displayCutout) {
        return getNonDecorDisplayWidth(fullWidth, fullHeight, rotation, uiMode, displayId,
                displayCutout);
    }

    @Override
    public int getConfigDisplayHeight(int fullWidth, int fullHeight, int rotation, int uiMode,
            int displayId, DisplayCutout displayCutout) {
        // There is a separate status bar at the top of the display.  We don't count that as part
        // of the fixed decor, since it can hide; however, for purposes of configurations,
        // we do want to exclude it since applications can't generally use that part
        // of the screen.
        // TODO(multi-display): Support status bars on secondary displays.
        if (displayId == DEFAULT_DISPLAY) {
            int statusBarHeight = mStatusBarHeightForRotation[rotation];
            if (displayCutout != null) {
                // If there is a cutout, it may already have accounted for some part of the status
                // bar height.
                statusBarHeight = Math.max(0, statusBarHeight - displayCutout.getSafeInsetTop());
            }
            return getNonDecorDisplayHeight(fullWidth, fullHeight, rotation, uiMode, displayId,
                    displayCutout) - statusBarHeight;
        }
        return fullHeight;
    }

    @Override
    public boolean isKeyguardHostWindow(WindowManager.LayoutParams attrs) {
        return attrs.type == TYPE_STATUS_BAR;
    }

    @Override
    public boolean canBeHiddenByKeyguardLw(WindowState win) {
        switch (win.getAttrs().type) {
            case TYPE_STATUS_BAR:
            case TYPE_NAVIGATION_BAR:
            case TYPE_WALLPAPER:
            case TYPE_DREAM:
                return false;
            default:
                // Hide only windows below the keyguard host window.
                return getWindowLayerLw(win) < getWindowLayerFromTypeLw(TYPE_STATUS_BAR);
        }
    }

    private boolean shouldBeHiddenByKeyguard(WindowState win, WindowState imeTarget) {

        // Keyguard visibility of window from activities are determined over activity visibility.
        if (win.getAppToken() != null) {
            return false;
        }

        final LayoutParams attrs = win.getAttrs();
        final boolean showImeOverKeyguard = imeTarget != null && imeTarget.isVisibleLw() &&
                ((imeTarget.getAttrs().flags & FLAG_SHOW_WHEN_LOCKED) != 0
                        || !canBeHiddenByKeyguardLw(imeTarget));

        // Show IME over the keyguard if the target allows it
        boolean allowWhenLocked = (win.isInputMethodWindow() || imeTarget == this)
                && showImeOverKeyguard;

        if (isKeyguardLocked() && isKeyguardOccluded()) {
            // Show SHOW_WHEN_LOCKED windows if Keyguard is occluded.
            allowWhenLocked |= (attrs.flags & FLAG_SHOW_WHEN_LOCKED) != 0
                    // Show error dialogs over apps that are shown on lockscreen
                    || (attrs.privateFlags & PRIVATE_FLAG_SYSTEM_ERROR) != 0;
        }

        boolean keyguardLocked = isKeyguardLocked();
        boolean hideDockDivider = attrs.type == TYPE_DOCK_DIVIDER
                && !mWindowManagerInternal.isStackVisible(WINDOWING_MODE_SPLIT_SCREEN_PRIMARY);
        return (keyguardLocked && !allowWhenLocked && win.getDisplayId() == DEFAULT_DISPLAY)
                || hideDockDivider;
    }

    /** {@inheritDoc} */
    @Override
    public StartingSurface addSplashScreen(IBinder appToken, String packageName, int theme,
            CompatibilityInfo compatInfo, CharSequence nonLocalizedLabel, int labelRes, int icon,
            int logo, int windowFlags, Configuration overrideConfig, int displayId) {
        if (!SHOW_SPLASH_SCREENS) {
            return null;
        }
        if (packageName == null) {
            return null;
        }

        WindowManager wm = null;
        View view = null;

        try {
            Context context = mContext;
            if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "addSplashScreen " + packageName
                    + ": nonLocalizedLabel=" + nonLocalizedLabel + " theme="
                    + Integer.toHexString(theme));

            // Obtain proper context to launch on the right display.
            final Context displayContext = getDisplayContext(context, displayId);
            if (displayContext == null) {
                // Can't show splash screen on requested display, so skip showing at all.
                return null;
            }
            context = displayContext;

            if (theme != context.getThemeResId() || labelRes != 0) {
                try {
                    context = context.createPackageContext(packageName, CONTEXT_RESTRICTED);
                    context.setTheme(theme);
                } catch (PackageManager.NameNotFoundException e) {
                    // Ignore
                }
            }

            if (overrideConfig != null && !overrideConfig.equals(EMPTY)) {
                if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "addSplashScreen: creating context based"
                        + " on overrideConfig" + overrideConfig + " for splash screen");
                final Context overrideContext = context.createConfigurationContext(overrideConfig);
                overrideContext.setTheme(theme);
                final TypedArray typedArray = overrideContext.obtainStyledAttributes(
                        com.android.internal.R.styleable.Window);
                final int resId = typedArray.getResourceId(R.styleable.Window_windowBackground, 0);
                if (resId != 0 && overrideContext.getDrawable(resId) != null) {
                    // We want to use the windowBackground for the override context if it is
                    // available, otherwise we use the default one to make sure a themed starting
                    // window is displayed for the app.
                    if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "addSplashScreen: apply overrideConfig"
                            + overrideConfig + " to starting window resId=" + resId);
                    context = overrideContext;
                }
                typedArray.recycle();
            }

            final PhoneWindow win = new PhoneWindow(context);
            win.setIsStartingWindow(true);

            CharSequence label = context.getResources().getText(labelRes, null);
            // Only change the accessibility title if the label is localized
            if (label != null) {
                win.setTitle(label, true);
            } else {
                win.setTitle(nonLocalizedLabel, false);
            }

            win.setType(
                WindowManager.LayoutParams.TYPE_APPLICATION_STARTING);

            synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
                // Assumes it's safe to show starting windows of launched apps while
                // the keyguard is being hidden. This is okay because starting windows never show
                // secret information.
                if (mKeyguardOccluded) {
                    windowFlags |= FLAG_SHOW_WHEN_LOCKED;
                }
            }

            // Force the window flags: this is a fake window, so it is not really
            // touchable or focusable by the user.  We also add in the ALT_FOCUSABLE_IM
            // flag because we do know that the next window will take input
            // focus, so we want to get the IME window up on top of us right away.
            win.setFlags(
                windowFlags|
                WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
                WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
                windowFlags|
                WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
                WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);

            win.setDefaultIcon(icon);
            win.setDefaultLogo(logo);

            win.setLayout(WindowManager.LayoutParams.MATCH_PARENT,
                    WindowManager.LayoutParams.MATCH_PARENT);

            final WindowManager.LayoutParams params = win.getAttributes();
            params.token = appToken;
            params.packageName = packageName;
            params.windowAnimations = win.getWindowStyle().getResourceId(
                    com.android.internal.R.styleable.Window_windowAnimationStyle, 0);
            params.privateFlags |=
                    WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED;
            params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;

            if (!compatInfo.supportsScreen()) {
                params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW;
            }

            params.setTitle("Splash Screen " + packageName);
            addSplashscreenContent(win, context);

            wm = (WindowManager) context.getSystemService(WINDOW_SERVICE);
            view = win.getDecorView();

            if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "Adding splash screen window for "
                + packageName + " / " + appToken + ": " + (view.getParent() != null ? view : null));

            wm.addView(view, params);

            // Only return the view if it was successfully added to the
            // window manager... which we can tell by it having a parent.
            return view.getParent() != null ? new SplashScreenSurface(view, appToken) : null;
        } catch (WindowManager.BadTokenException e) {
            // ignore
            Log.w(TAG, appToken + " already running, starting window not displayed. " +
                    e.getMessage());
        } catch (RuntimeException e) {
            // don't crash if something else bad happens, for example a
            // failure loading resources because we are loading from an app
            // on external storage that has been unmounted.
            Log.w(TAG, appToken + " failed creating starting window", e);
        } finally {
            if (view != null && view.getParent() == null) {
                Log.w(TAG, "view not successfully added to wm, removing view");
                wm.removeViewImmediate(view);
            }
        }

        return null;
    }

    private void addSplashscreenContent(PhoneWindow win, Context ctx) {
        final TypedArray a = ctx.obtainStyledAttributes(R.styleable.Window);
        final int resId = a.getResourceId(R.styleable.Window_windowSplashscreenContent, 0);
        a.recycle();
        if (resId == 0) {
            return;
        }
        final Drawable drawable = ctx.getDrawable(resId);
        if (drawable == null) {
            return;
        }

        // We wrap this into a view so the system insets get applied to the drawable.
        final View v = new View(ctx);
        v.setBackground(drawable);
        win.setContentView(v);
    }

    /** Obtain proper context for showing splash screen on the provided display. */
    private Context getDisplayContext(Context context, int displayId) {
        if (displayId == DEFAULT_DISPLAY) {
            // The default context fits.
            return context;
        }

        final DisplayManager dm = (DisplayManager) context.getSystemService(DISPLAY_SERVICE);
        final Display targetDisplay = dm.getDisplay(displayId);
        if (targetDisplay == null) {
            // Failed to obtain the non-default display where splash screen should be shown,
            // lets not show at all.
            return null;
        }

        return context.createDisplayContext(targetDisplay);
    }

    /**
     * Preflight adding a window to the system.
     *
     * Currently enforces that three window types are singletons:
     * <ul>
     * <li>STATUS_BAR_TYPE</li>
     * <li>KEYGUARD_TYPE</li>
     * </ul>
     *
     * @param win The window to be added
     * @param attrs Information about the window to be added
     *
     * @return If ok, WindowManagerImpl.ADD_OKAY.  If too many singletons,
     * WindowManagerImpl.ADD_MULTIPLE_SINGLETON
     */
    @Override
    public int prepareAddWindowLw(WindowState win, WindowManager.LayoutParams attrs) {

        if ((attrs.privateFlags & PRIVATE_FLAG_IS_SCREEN_DECOR) != 0) {
            mContext.enforceCallingOrSelfPermission(
                    android.Manifest.permission.STATUS_BAR_SERVICE,
                    "PhoneWindowManager");
            mScreenDecorWindows.add(win);
        }

        switch (attrs.type) {
            case TYPE_STATUS_BAR:
                mContext.enforceCallingOrSelfPermission(
                        android.Manifest.permission.STATUS_BAR_SERVICE,
                        "PhoneWindowManager");
                if (mStatusBar != null) {
                    if (mStatusBar.isAlive()) {
                        return WindowManagerGlobal.ADD_MULTIPLE_SINGLETON;
                    }
                }
                mStatusBar = win;
                mStatusBarController.setWindow(win);
                setKeyguardOccludedLw(mKeyguardOccluded, true /* force */);
                break;
            case TYPE_NAVIGATION_BAR:
                mContext.enforceCallingOrSelfPermission(
                        android.Manifest.permission.STATUS_BAR_SERVICE,
                        "PhoneWindowManager");
                if (mNavigationBar != null) {
                    if (mNavigationBar.isAlive()) {
                        return WindowManagerGlobal.ADD_MULTIPLE_SINGLETON;
                    }
                }
                mNavigationBar = win;
                mNavigationBarController.setWindow(win);
                mNavigationBarController.setOnBarVisibilityChangedListener(
                        mNavBarVisibilityListener, true);
                if (DEBUG_LAYOUT) Slog.i(TAG, "NAVIGATION BAR: " + mNavigationBar);
                break;
            case TYPE_NAVIGATION_BAR_PANEL:
            case TYPE_STATUS_BAR_PANEL:
            case TYPE_STATUS_BAR_SUB_PANEL:
            case TYPE_VOICE_INTERACTION_STARTING:
                mContext.enforceCallingOrSelfPermission(
                        android.Manifest.permission.STATUS_BAR_SERVICE,
                        "PhoneWindowManager");
                break;
        }
        return ADD_OKAY;
    }

    /** {@inheritDoc} */
    @Override
    public void removeWindowLw(WindowState win) {
        if (mStatusBar == win) {
            mStatusBar = null;
            mStatusBarController.setWindow(null);
        } else if (mNavigationBar == win) {
            mNavigationBar = null;
            mNavigationBarController.setWindow(null);
        }
        mScreenDecorWindows.remove(win);
    }

    static final boolean PRINT_ANIM = false;

    /** {@inheritDoc} */
    @Override
    public int selectAnimationLw(WindowState win, int transit) {
        if (PRINT_ANIM) Log.i(TAG, "selectAnimation in " + win
              + ": transit=" + transit);
        if (win == mStatusBar) {
            final boolean isKeyguard = (win.getAttrs().privateFlags & PRIVATE_FLAG_KEYGUARD) != 0;
            final boolean expanded = win.getAttrs().height == MATCH_PARENT
                    && win.getAttrs().width == MATCH_PARENT;
            if (isKeyguard || expanded) {
                return -1;
            }
            if (transit == TRANSIT_EXIT
                    || transit == TRANSIT_HIDE) {
                return R.anim.dock_top_exit;
            } else if (transit == TRANSIT_ENTER
                    || transit == TRANSIT_SHOW) {
                return R.anim.dock_top_enter;
            }
        } else if (win == mNavigationBar) {
            if (win.getAttrs().windowAnimations != 0) {
                return 0;
            }
            // This can be on either the bottom or the right or the left.
            if (mNavigationBarPosition == NAV_BAR_BOTTOM) {
                if (transit == TRANSIT_EXIT
                        || transit == TRANSIT_HIDE) {
                    if (isKeyguardShowingAndNotOccluded()) {
                        return R.anim.dock_bottom_exit_keyguard;
                    } else {
                        return R.anim.dock_bottom_exit;
                    }
                } else if (transit == TRANSIT_ENTER
                        || transit == TRANSIT_SHOW) {
                    return R.anim.dock_bottom_enter;
                }
            } else if (mNavigationBarPosition == NAV_BAR_RIGHT) {
                if (transit == TRANSIT_EXIT
                        || transit == TRANSIT_HIDE) {
                    return R.anim.dock_right_exit;
                } else if (transit == TRANSIT_ENTER
                        || transit == TRANSIT_SHOW) {
                    return R.anim.dock_right_enter;
                }
            } else if (mNavigationBarPosition == NAV_BAR_LEFT) {
                if (transit == TRANSIT_EXIT
                        || transit == TRANSIT_HIDE) {
                    return R.anim.dock_left_exit;
                } else if (transit == TRANSIT_ENTER
                        || transit == TRANSIT_SHOW) {
                    return R.anim.dock_left_enter;
                }
            }
        } else if (win.getAttrs().type == TYPE_DOCK_DIVIDER) {
            return selectDockedDividerAnimationLw(win, transit);
        }

        if (transit == TRANSIT_PREVIEW_DONE) {
            if (win.hasAppShownWindows()) {
                if (PRINT_ANIM) Log.i(TAG, "**** STARTING EXIT");
                return com.android.internal.R.anim.app_starting_exit;
            }
        } else if (win.getAttrs().type == TYPE_DREAM && mDreamingLockscreen
                && transit == TRANSIT_ENTER) {
            // Special case: we are animating in a dream, while the keyguard
            // is shown.  We don't want an animation on the dream, because
            // we need it shown immediately with the keyguard animating away
            // to reveal it.
            return -1;
        }

        return 0;
    }

    private int selectDockedDividerAnimationLw(WindowState win, int transit) {
        int insets = mWindowManagerFuncs.getDockedDividerInsetsLw();

        // If the divider is behind the navigation bar, don't animate.
        final Rect frame = win.getFrameLw();
        final boolean behindNavBar = mNavigationBar != null
                && ((mNavigationBarPosition == NAV_BAR_BOTTOM
                        && frame.top + insets >= mNavigationBar.getFrameLw().top)
                || (mNavigationBarPosition == NAV_BAR_RIGHT
                        && frame.left + insets >= mNavigationBar.getFrameLw().left)
                || (mNavigationBarPosition == NAV_BAR_LEFT
                        && frame.right - insets <= mNavigationBar.getFrameLw().right));
        final boolean landscape = frame.height() > frame.width();
        final boolean offscreenLandscape = landscape && (frame.right - insets <= 0
                || frame.left + insets >= win.getDisplayFrameLw().right);
        final boolean offscreenPortrait = !landscape && (frame.top - insets <= 0
                || frame.bottom + insets >= win.getDisplayFrameLw().bottom);
        final boolean offscreen = offscreenLandscape || offscreenPortrait;
        if (behindNavBar || offscreen) {
            return 0;
        }
        if (transit == TRANSIT_ENTER || transit == TRANSIT_SHOW) {
            return R.anim.fade_in;
        } else if (transit == TRANSIT_EXIT) {
            return R.anim.fade_out;
        } else {
            return 0;
        }
    }

    @Override
    public void selectRotationAnimationLw(int anim[]) {
        // If the screen is off or non-interactive, force a jumpcut.
        final boolean forceJumpcut = !mScreenOnFully || !okToAnimate();
        if (PRINT_ANIM) Slog.i(TAG, "selectRotationAnimation mTopFullscreen="
                + mTopFullscreenOpaqueWindowState + " rotationAnimation="
                + (mTopFullscreenOpaqueWindowState == null ?
                        "0" : mTopFullscreenOpaqueWindowState.getAttrs().rotationAnimation)
                + " forceJumpcut=" + forceJumpcut);
        if (forceJumpcut) {
            anim[0] = R.anim.rotation_animation_jump_exit;
            anim[1] = R.anim.rotation_animation_enter;
            return;
        }
        if (mTopFullscreenOpaqueWindowState != null) {
            int animationHint = mTopFullscreenOpaqueWindowState.getRotationAnimationHint();
            if (animationHint < 0 && mTopIsFullscreen) {
                animationHint = mTopFullscreenOpaqueWindowState.getAttrs().rotationAnimation;
            }
            switch (animationHint) {
                case ROTATION_ANIMATION_CROSSFADE:
                case ROTATION_ANIMATION_SEAMLESS: // Crossfade is fallback for seamless.
                    anim[0] = R.anim.rotation_animation_xfade_exit;
                    anim[1] = R.anim.rotation_animation_enter;
                    break;
                case ROTATION_ANIMATION_JUMPCUT:
                    anim[0] = R.anim.rotation_animation_jump_exit;
                    anim[1] = R.anim.rotation_animation_enter;
                    break;
                case ROTATION_ANIMATION_ROTATE:
                default:
                    anim[0] = anim[1] = 0;
                    break;
            }
        } else {
            anim[0] = anim[1] = 0;
        }
    }

    @Override
    public boolean validateRotationAnimationLw(int exitAnimId, int enterAnimId,
            boolean forceDefault) {
        switch (exitAnimId) {
            case R.anim.rotation_animation_xfade_exit:
            case R.anim.rotation_animation_jump_exit:
                // These are the only cases that matter.
                if (forceDefault) {
                    return false;
                }
                int anim[] = new int[2];
                selectRotationAnimationLw(anim);
                return (exitAnimId == anim[0] && enterAnimId == anim[1]);
            default:
                return true;
        }
    }

    @Override
    public Animation createHiddenByKeyguardExit(boolean onWallpaper,
            boolean goingToNotificationShade) {
        if (goingToNotificationShade) {
            return AnimationUtils.loadAnimation(mContext, R.anim.lock_screen_behind_enter_fade_in);
        }

        AnimationSet set = (AnimationSet) AnimationUtils.loadAnimation(mContext, onWallpaper ?
                    R.anim.lock_screen_behind_enter_wallpaper :
                    R.anim.lock_screen_behind_enter);

        // TODO: Use XML interpolators when we have log interpolators available in XML.
        final List<Animation> animations = set.getAnimations();
        for (int i = animations.size() - 1; i >= 0; --i) {
            animations.get(i).setInterpolator(mLogDecelerateInterpolator);
        }

        return set;
    }


    @Override
    public Animation createKeyguardWallpaperExit(boolean goingToNotificationShade) {
        if (goingToNotificationShade) {
            return null;
        } else {
            return AnimationUtils.loadAnimation(mContext, R.anim.lock_screen_wallpaper_exit);
        }
    }

    private static void awakenDreams() {
        IDreamManager dreamManager = getDreamManager();
        if (dreamManager != null) {
            try {
                dreamManager.awaken();
            } catch (RemoteException e) {
                // fine, stay asleep then
            }
        }
    }

    static IDreamManager getDreamManager() {
        return IDreamManager.Stub.asInterface(
                ServiceManager.checkService(DreamService.DREAM_SERVICE));
    }

    TelecomManager getTelecommService() {
        return (TelecomManager) mContext.getSystemService(Context.TELECOM_SERVICE);
    }

    static IAudioService getAudioService() {
        IAudioService audioService = IAudioService.Stub.asInterface(
                ServiceManager.checkService(Context.AUDIO_SERVICE));
        if (audioService == null) {
            Log.w(TAG, "Unable to find IAudioService interface.");
        }
        return audioService;
    }

    boolean keyguardOn() {
        return isKeyguardShowingAndNotOccluded() || inKeyguardRestrictedKeyInputMode();
    }

    private static final int[] WINDOW_TYPES_WHERE_HOME_DOESNT_WORK = {
            WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
            WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
        };

    /** {@inheritDoc} */
    @Override
    public long interceptKeyBeforeDispatching(WindowState win, KeyEvent event, int policyFlags) {
        final boolean keyguardOn = keyguardOn();
        final int keyCode = event.getKeyCode();
        final int repeatCount = event.getRepeatCount();
        final int metaState = event.getMetaState();
        final int flags = event.getFlags();
        final boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
        final boolean canceled = event.isCanceled();

        if (DEBUG_INPUT) {
            Log.d(TAG, "interceptKeyTi keyCode=" + keyCode + " down=" + down + " repeatCount="
                    + repeatCount + " keyguardOn=" + keyguardOn + " mHomePressed=" + mHomePressed
                    + " canceled=" + canceled);
        }

        // If we think we might have a volume down & power key chord on the way
        // but we're not sure, then tell the dispatcher to wait a little while and
        // try again later before dispatching.
        if (mScreenshotChordEnabled && (flags & KeyEvent.FLAG_FALLBACK) == 0) {
            if (mScreenshotChordVolumeDownKeyTriggered && !mScreenshotChordPowerKeyTriggered) {
                final long now = SystemClock.uptimeMillis();
                final long timeoutTime = mScreenshotChordVolumeDownKeyTime
                        + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS;
                if (now < timeoutTime) {
                    return timeoutTime - now;
                }
            }
            if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
                    && mScreenshotChordVolumeDownKeyConsumed) {
                if (!down) {
                    mScreenshotChordVolumeDownKeyConsumed = false;
                }
                return -1;
            }
        }

        // If an accessibility shortcut might be partially complete, hold off dispatching until we
        // know if it is complete or not
        if (mAccessibilityShortcutController.isAccessibilityShortcutAvailable(false)
                && (flags & KeyEvent.FLAG_FALLBACK) == 0) {
            if (mScreenshotChordVolumeDownKeyTriggered ^ mA11yShortcutChordVolumeUpKeyTriggered) {
                final long now = SystemClock.uptimeMillis();
                final long timeoutTime = (mScreenshotChordVolumeDownKeyTriggered
                        ? mScreenshotChordVolumeDownKeyTime : mA11yShortcutChordVolumeUpKeyTime)
                        + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS;
                if (now < timeoutTime) {
                    return timeoutTime - now;
                }
            }
            if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN && mScreenshotChordVolumeDownKeyConsumed) {
                if (!down) {
                    mScreenshotChordVolumeDownKeyConsumed = false;
                }
                return -1;
            }
            if (keyCode == KeyEvent.KEYCODE_VOLUME_UP && mA11yShortcutChordVolumeUpKeyConsumed) {
                if (!down) {
                    mA11yShortcutChordVolumeUpKeyConsumed = false;
                }
                return -1;
            }
        }

        // If a ringer toggle chord could be on the way but we're not sure, then tell the dispatcher
        // to wait a little while and try again later before dispatching.
        if (mRingerToggleChord != VOLUME_HUSH_OFF && (flags & KeyEvent.FLAG_FALLBACK) == 0) {
            if (mA11yShortcutChordVolumeUpKeyTriggered && !mScreenshotChordPowerKeyTriggered) {
                final long now = SystemClock.uptimeMillis();
                final long timeoutTime = mA11yShortcutChordVolumeUpKeyTime
                        + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS;
                if (now < timeoutTime) {
                    return timeoutTime - now;
                }
            }
            if (keyCode == KeyEvent.KEYCODE_VOLUME_UP && mA11yShortcutChordVolumeUpKeyConsumed) {
                if (!down) {
                    mA11yShortcutChordVolumeUpKeyConsumed = false;
                }
                return -1;
            }
        }

        // Cancel any pending meta actions if we see any other keys being pressed between the down
        // of the meta key and its corresponding up.
        if (mPendingMetaAction && !KeyEvent.isMetaKey(keyCode)) {
            mPendingMetaAction = false;
        }
        // Any key that is not Alt or Meta cancels Caps Lock combo tracking.
        if (mPendingCapsLockToggle && !KeyEvent.isMetaKey(keyCode) && !KeyEvent.isAltKey(keyCode)) {
            mPendingCapsLockToggle = false;
        }

        // First we always handle the home key here, so applications
        // can never break it, although if keyguard is on, we do let
        // it handle it, because that gives us the correct 5 second
        // timeout.
        if (keyCode == KeyEvent.KEYCODE_HOME) {

            // If we have released the home key, and didn't do anything else
            // while it was pressed, then it is time to go home!
            if (!down) {
                cancelPreloadRecentApps();

                mHomePressed = false;
                if (mHomeConsumed) {
                    mHomeConsumed = false;
                    return -1;
                }

                if (canceled) {
                    Log.i(TAG, "Ignoring HOME; event canceled.");
                    return -1;
                }

                // Delay handling home if a double-tap is possible.
                if (mDoubleTapOnHomeBehavior != DOUBLE_TAP_HOME_NOTHING) {
                    mHandler.removeCallbacks(mHomeDoubleTapTimeoutRunnable); // just in case
                    mHomeDoubleTapPending = true;
                    mHandler.postDelayed(mHomeDoubleTapTimeoutRunnable,
                            ViewConfiguration.getDoubleTapTimeout());
                    return -1;
                }

                handleShortPressOnHome();
                return -1;
            }

            // If a system window has focus, then it doesn't make sense
            // right now to interact with applications.
            WindowManager.LayoutParams attrs = win != null ? win.getAttrs() : null;
            if (attrs != null) {
                final int type = attrs.type;
                if (type == TYPE_KEYGUARD_DIALOG
                        || (attrs.privateFlags & PRIVATE_FLAG_KEYGUARD) != 0) {
                    // the "app" is keyguard, so give it the key
                    return 0;
                }
                final int typeCount = WINDOW_TYPES_WHERE_HOME_DOESNT_WORK.length;
                for (int i=0; i<typeCount; i++) {
                    if (type == WINDOW_TYPES_WHERE_HOME_DOESNT_WORK[i]) {
                        // don't do anything, but also don't pass it to the app
                        return -1;
                    }
                }
            }

            // Remember that home is pressed and handle special actions.
            if (repeatCount == 0) {
                mHomePressed = true;
                if (mHomeDoubleTapPending) {
                    mHomeDoubleTapPending = false;
                    mHandler.removeCallbacks(mHomeDoubleTapTimeoutRunnable);
                    handleDoubleTapOnHome();
                } else if (mDoubleTapOnHomeBehavior == DOUBLE_TAP_HOME_RECENT_SYSTEM_UI) {
                    preloadRecentApps();
                }
            } else if ((event.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0) {
                if (!keyguardOn) {
                    handleLongPressOnHome(event.getDeviceId());
                }
            }
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_MENU) {
            // Hijack modified menu keys for debugging features
            final int chordBug = KeyEvent.META_SHIFT_ON;

            if (down && repeatCount == 0) {
                if (mEnableShiftMenuBugReports && (metaState & chordBug) == chordBug) {
                    Intent intent = new Intent(Intent.ACTION_BUG_REPORT);
                    mContext.sendOrderedBroadcastAsUser(intent, UserHandle.CURRENT,
                            null, null, null, 0, null, null);
                    return -1;
                }
            }
        } else if (keyCode == KeyEvent.KEYCODE_SEARCH) {
            if (down) {
                if (repeatCount == 0) {
                    mSearchKeyShortcutPending = true;
                    mConsumeSearchKeyUp = false;
                }
            } else {
                mSearchKeyShortcutPending = false;
                if (mConsumeSearchKeyUp) {
                    mConsumeSearchKeyUp = false;
                    return -1;
                }
            }
            return 0;
        } else if (keyCode == KeyEvent.KEYCODE_APP_SWITCH) {
            if (!keyguardOn) {
                if (down && repeatCount == 0) {
                    preloadRecentApps();
                } else if (!down) {
                    toggleRecentApps();
                }
            }
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_N && event.isMetaPressed()) {
            if (down) {
                IStatusBarService service = getStatusBarService();
                if (service != null) {
                    try {
                        service.expandNotificationsPanel();
                    } catch (RemoteException e) {
                        // do nothing.
                    }
                }
            }
        } else if (keyCode == KeyEvent.KEYCODE_S && event.isMetaPressed()
                && event.isCtrlPressed()) {
            if (down && repeatCount == 0) {
                int type = event.isShiftPressed() ? TAKE_SCREENSHOT_SELECTED_REGION
                        : TAKE_SCREENSHOT_FULLSCREEN;
                mScreenshotRunnable.setScreenshotType(type);
                mHandler.post(mScreenshotRunnable);
                return -1;
            }
        } else if (keyCode == KeyEvent.KEYCODE_SLASH && event.isMetaPressed()) {
            if (down && repeatCount == 0 && !isKeyguardLocked()) {
                toggleKeyboardShortcutsMenu(event.getDeviceId());
            }
        } else if (keyCode == KeyEvent.KEYCODE_ASSIST) {
            Slog.wtf(TAG, "KEYCODE_ASSIST should be handled in interceptKeyBeforeQueueing");
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_VOICE_ASSIST) {
            Slog.wtf(TAG, "KEYCODE_VOICE_ASSIST should be handled in interceptKeyBeforeQueueing");
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_SYSRQ) {
            if (down && repeatCount == 0) {
                mScreenshotRunnable.setScreenshotType(TAKE_SCREENSHOT_FULLSCREEN);
                mHandler.post(mScreenshotRunnable);
            }
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_BRIGHTNESS_UP
                || keyCode == KeyEvent.KEYCODE_BRIGHTNESS_DOWN) {
            if (down) {
                int direction = keyCode == KeyEvent.KEYCODE_BRIGHTNESS_UP ? 1 : -1;

                // Disable autobrightness if it's on
                int auto = Settings.System.getIntForUser(
                        mContext.getContentResolver(),
                        Settings.System.SCREEN_BRIGHTNESS_MODE,
                        Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL,
                        UserHandle.USER_CURRENT_OR_SELF);
                if (auto != 0) {
                    Settings.System.putIntForUser(mContext.getContentResolver(),
                            Settings.System.SCREEN_BRIGHTNESS_MODE,
                            Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL,
                            UserHandle.USER_CURRENT_OR_SELF);
                }

                int min = mPowerManager.getMinimumScreenBrightnessSetting();
                int max = mPowerManager.getMaximumScreenBrightnessSetting();
                int step = (max - min + BRIGHTNESS_STEPS - 1) / BRIGHTNESS_STEPS * direction;
                int brightness = Settings.System.getIntForUser(mContext.getContentResolver(),
                        Settings.System.SCREEN_BRIGHTNESS,
                        mPowerManager.getDefaultScreenBrightnessSetting(),
                        UserHandle.USER_CURRENT_OR_SELF);
                brightness += step;
                // Make sure we don't go beyond the limits.
                brightness = Math.min(max, brightness);
                brightness = Math.max(min, brightness);

                Settings.System.putIntForUser(mContext.getContentResolver(),
                        Settings.System.SCREEN_BRIGHTNESS, brightness,
                        UserHandle.USER_CURRENT_OR_SELF);
                startActivityAsUser(new Intent(Intent.ACTION_SHOW_BRIGHTNESS_DIALOG),
                        UserHandle.CURRENT_OR_SELF);
            }
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP
                || keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
                || keyCode == KeyEvent.KEYCODE_VOLUME_MUTE) {
            if (mUseTvRouting || mHandleVolumeKeysInWM) {
                // On TVs or when the configuration is enabled, volume keys never
                // go to the foreground app.
                dispatchDirectAudioEvent(event);
                return -1;
            }

            // If the device is in VR mode and keys are "internal" (e.g. on the side of the
            // device), then drop the volume keys and don't forward it to the application/dispatch
            // the audio event.
            if (mPersistentVrModeEnabled) {
                final InputDevice d = event.getDevice();
                if (d != null && !d.isExternal()) {
                    return -1;
                }
            }
        } else if (keyCode == KeyEvent.KEYCODE_TAB && event.isMetaPressed()) {
            // Pass through keyboard navigation keys.
            return 0;
        } else if (mHasFeatureLeanback && interceptBugreportGestureTv(keyCode, down)) {
            return -1;
        } else if (mHasFeatureLeanback && interceptAccessibilityGestureTv(keyCode, down)) {
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_ALL_APPS) {
            if (!down) {
                mHandler.removeMessages(MSG_HANDLE_ALL_APPS);
                Message msg = mHandler.obtainMessage(MSG_HANDLE_ALL_APPS);
                msg.setAsynchronous(true);
                msg.sendToTarget();
            }
            return -1;
        }

        // Toggle Caps Lock on META-ALT.
        boolean actionTriggered = false;
        if (KeyEvent.isModifierKey(keyCode)) {
            if (!mPendingCapsLockToggle) {
                // Start tracking meta state for combo.
                mInitialMetaState = mMetaState;
                mPendingCapsLockToggle = true;
            } else if (event.getAction() == KeyEvent.ACTION_UP) {
                int altOnMask = mMetaState & KeyEvent.META_ALT_MASK;
                int metaOnMask = mMetaState & KeyEvent.META_META_MASK;

                // Check for Caps Lock toggle
                if ((metaOnMask != 0) && (altOnMask != 0)) {
                    // Check if nothing else is pressed
                    if (mInitialMetaState == (mMetaState ^ (altOnMask | metaOnMask))) {
                        // Handle Caps Lock Toggle
                        mInputManagerInternal.toggleCapsLock(event.getDeviceId());
                        actionTriggered = true;
                    }
                }

                // Always stop tracking when key goes up.
                mPendingCapsLockToggle = false;
            }
        }
        // Store current meta state to be able to evaluate it later.
        mMetaState = metaState;

        if (actionTriggered) {
            return -1;
        }

        if (KeyEvent.isMetaKey(keyCode)) {
            if (down) {
                mPendingMetaAction = true;
            } else if (mPendingMetaAction) {
                launchAssistAction(Intent.EXTRA_ASSIST_INPUT_HINT_KEYBOARD, event.getDeviceId());
            }
            return -1;
        }

        // Shortcuts are invoked through Search+key, so intercept those here
        // Any printing key that is chorded with Search should be consumed
        // even if no shortcut was invoked.  This prevents text from being
        // inadvertently inserted when using a keyboard that has built-in macro
        // shortcut keys (that emit Search+x) and some of them are not registered.
        if (mSearchKeyShortcutPending) {
            final KeyCharacterMap kcm = event.getKeyCharacterMap();
            if (kcm.isPrintingKey(keyCode)) {
                mConsumeSearchKeyUp = true;
                mSearchKeyShortcutPending = false;
                if (down && repeatCount == 0 && !keyguardOn) {
                    Intent shortcutIntent = mShortcutManager.getIntent(kcm, keyCode, metaState);
                    if (shortcutIntent != null) {
                        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        try {
                            startActivityAsUser(shortcutIntent, UserHandle.CURRENT);
                            dismissKeyboardShortcutsMenu();
                        } catch (ActivityNotFoundException ex) {
                            Slog.w(TAG, "Dropping shortcut key combination because "
                                    + "the activity to which it is registered was not found: "
                                    + "SEARCH+" + KeyEvent.keyCodeToString(keyCode), ex);
                        }
                    } else {
                        Slog.i(TAG, "Dropping unregistered shortcut key combination: "
                                + "SEARCH+" + KeyEvent.keyCodeToString(keyCode));
                    }
                }
                return -1;
            }
        }

        // Invoke shortcuts using Meta.
        if (down && repeatCount == 0 && !keyguardOn
                && (metaState & KeyEvent.META_META_ON) != 0) {
            final KeyCharacterMap kcm = event.getKeyCharacterMap();
            if (kcm.isPrintingKey(keyCode)) {
                Intent shortcutIntent = mShortcutManager.getIntent(kcm, keyCode,
                        metaState & ~(KeyEvent.META_META_ON
                                | KeyEvent.META_META_LEFT_ON | KeyEvent.META_META_RIGHT_ON));
                if (shortcutIntent != null) {
                    shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    try {
                        startActivityAsUser(shortcutIntent, UserHandle.CURRENT);
                        dismissKeyboardShortcutsMenu();
                    } catch (ActivityNotFoundException ex) {
                        Slog.w(TAG, "Dropping shortcut key combination because "
                                + "the activity to which it is registered was not found: "
                                + "META+" + KeyEvent.keyCodeToString(keyCode), ex);
                    }
                    return -1;
                }
            }
        }

        // Handle application launch keys.
        if (down && repeatCount == 0 && !keyguardOn) {
            String category = sApplicationLaunchKeyCategories.get(keyCode);
            if (category != null) {
                Intent intent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, category);
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                try {
                    startActivityAsUser(intent, UserHandle.CURRENT);
                    dismissKeyboardShortcutsMenu();
                } catch (ActivityNotFoundException ex) {
                    Slog.w(TAG, "Dropping application launch key because "
                            + "the activity to which it is registered was not found: "
                            + "keyCode=" + keyCode + ", category=" + category, ex);
                }
                return -1;
            }
        }

        // Display task switcher for ALT-TAB.
        if (down && repeatCount == 0 && keyCode == KeyEvent.KEYCODE_TAB) {
            if (mRecentAppsHeldModifiers == 0 && !keyguardOn && isUserSetupComplete()) {
                final int shiftlessModifiers = event.getModifiers() & ~KeyEvent.META_SHIFT_MASK;
                if (KeyEvent.metaStateHasModifiers(shiftlessModifiers, KeyEvent.META_ALT_ON)) {
                    mRecentAppsHeldModifiers = shiftlessModifiers;
                    showRecentApps(true);
                    return -1;
                }
            }
        } else if (!down && mRecentAppsHeldModifiers != 0
                && (metaState & mRecentAppsHeldModifiers) == 0) {
            mRecentAppsHeldModifiers = 0;
            hideRecentApps(true, false);
        }

        // Handle keyboard layout switching.
        // TODO: Deprecate this behavior when we fully migrate to IME subtype-based layout rotation.
        if (down && repeatCount == 0 && keyCode == KeyEvent.KEYCODE_SPACE
                && ((metaState & KeyEvent.META_CTRL_MASK) != 0)) {
            int direction = (metaState & KeyEvent.META_SHIFT_MASK) != 0 ? -1 : 1;
            mWindowManagerFuncs.switchKeyboardLayout(event.getDeviceId(), direction);
            return -1;
        }

        // Handle input method switching.
        if (down && repeatCount == 0
                && (keyCode == KeyEvent.KEYCODE_LANGUAGE_SWITCH
                        || (keyCode == KeyEvent.KEYCODE_SPACE
                                && (metaState & KeyEvent.META_META_MASK) != 0))) {
            final boolean forwardDirection = (metaState & KeyEvent.META_SHIFT_MASK) == 0;
            mWindowManagerFuncs.switchInputMethod(forwardDirection);
            return -1;
        }
        if (mLanguageSwitchKeyPressed && !down
                && (keyCode == KeyEvent.KEYCODE_LANGUAGE_SWITCH
                        || keyCode == KeyEvent.KEYCODE_SPACE)) {
            mLanguageSwitchKeyPressed = false;
            return -1;
        }

        if (isValidGlobalKey(keyCode)
                && mGlobalKeyManager.handleGlobalKey(mContext, keyCode, event)) {
            return -1;
        }

        if (down) {
            long shortcutCode = keyCode;
            if (event.isCtrlPressed()) {
                shortcutCode |= ((long) KeyEvent.META_CTRL_ON) << Integer.SIZE;
            }

            if (event.isAltPressed()) {
                shortcutCode |= ((long) KeyEvent.META_ALT_ON) << Integer.SIZE;
            }

            if (event.isShiftPressed()) {
                shortcutCode |= ((long) KeyEvent.META_SHIFT_ON) << Integer.SIZE;
            }

            if (event.isMetaPressed()) {
                shortcutCode |= ((long) KeyEvent.META_META_ON) << Integer.SIZE;
            }

            IShortcutService shortcutService = mShortcutKeyServices.get(shortcutCode);
            if (shortcutService != null) {
                try {
                    if (isUserSetupComplete()) {
                        shortcutService.notifyShortcutKeyPressed(shortcutCode);
                    }
                } catch (RemoteException e) {
                    mShortcutKeyServices.delete(shortcutCode);
                }
                return -1;
            }
        }

        // Reserve all the META modifier combos for system behavior
        if ((metaState & KeyEvent.META_META_ON) != 0) {
            return -1;
        }

        // Let the application handle the key.
        return 0;
    }

    /**
     * TV only: recognizes a remote control gesture for capturing a bug report.
     */
    private boolean interceptBugreportGestureTv(int keyCode, boolean down) {
        // The bugreport capture chord is a long press on DPAD CENTER and BACK simultaneously.
        if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
            mBugreportTvKey1Pressed = down;
        } else if (keyCode == KeyEvent.KEYCODE_BACK) {
            mBugreportTvKey2Pressed = down;
        }

        if (mBugreportTvKey1Pressed && mBugreportTvKey2Pressed) {
            if (!mBugreportTvScheduled) {
                mBugreportTvScheduled = true;
                Message msg = Message.obtain(mHandler, MSG_BUGREPORT_TV);
                msg.setAsynchronous(true);
                mHandler.sendMessageDelayed(msg, BUGREPORT_TV_GESTURE_TIMEOUT_MILLIS);
            }
        } else if (mBugreportTvScheduled) {
            mHandler.removeMessages(MSG_BUGREPORT_TV);
            mBugreportTvScheduled = false;
        }

        return mBugreportTvScheduled;
    }

    /**
     * TV only: recognizes a remote control gesture as Accessibility shortcut.
     * Shortcut: Long press (BACK + DPAD_DOWN)
     */
    private boolean interceptAccessibilityGestureTv(int keyCode, boolean down) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            mAccessibilityTvKey1Pressed = down;
        } else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
            mAccessibilityTvKey2Pressed = down;
        }

        if (mAccessibilityTvKey1Pressed && mAccessibilityTvKey2Pressed) {
            if (!mAccessibilityTvScheduled) {
                mAccessibilityTvScheduled = true;
                Message msg = Message.obtain(mHandler, MSG_ACCESSIBILITY_TV);
                msg.setAsynchronous(true);
                mHandler.sendMessageDelayed(msg, getAccessibilityShortcutTimeout());
            }
        } else if (mAccessibilityTvScheduled) {
            mHandler.removeMessages(MSG_ACCESSIBILITY_TV);
            mAccessibilityTvScheduled = false;
        }

        return mAccessibilityTvScheduled;
    }

    private void takeBugreport() {
        if ("1".equals(SystemProperties.get("ro.debuggable"))
                || Settings.Global.getInt(mContext.getContentResolver(),
                        Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) == 1) {
            try {
                ActivityManager.getService()
                        .requestBugReport(ActivityManager.BUGREPORT_OPTION_INTERACTIVE);
            } catch (RemoteException e) {
                Slog.e(TAG, "Error taking bugreport", e);
            }
        }
    }

    /** {@inheritDoc} */
    @Override
    public KeyEvent dispatchUnhandledKey(WindowState win, KeyEvent event, int policyFlags) {
        // Note: This method is only called if the initial down was unhandled.
        if (DEBUG_INPUT) {
            Slog.d(TAG, "Unhandled key: win=" + win + ", action=" + event.getAction()
                    + ", flags=" + event.getFlags()
                    + ", keyCode=" + event.getKeyCode()
                    + ", scanCode=" + event.getScanCode()
                    + ", metaState=" + event.getMetaState()
                    + ", repeatCount=" + event.getRepeatCount()
                    + ", policyFlags=" + policyFlags);
        }

        KeyEvent fallbackEvent = null;
        if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
            final KeyCharacterMap kcm = event.getKeyCharacterMap();
            final int keyCode = event.getKeyCode();
            final int metaState = event.getMetaState();
            final boolean initialDown = event.getAction() == KeyEvent.ACTION_DOWN
                    && event.getRepeatCount() == 0;

            // Check for fallback actions specified by the key character map.
            final FallbackAction fallbackAction;
            if (initialDown) {
                fallbackAction = kcm.getFallbackAction(keyCode, metaState);
            } else {
                fallbackAction = mFallbackActions.get(keyCode);
            }

            if (fallbackAction != null) {
                if (DEBUG_INPUT) {
                    Slog.d(TAG, "Fallback: keyCode=" + fallbackAction.keyCode
                            + " metaState=" + Integer.toHexString(fallbackAction.metaState));
                }

                final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK;
                fallbackEvent = KeyEvent.obtain(
                        event.getDownTime(), event.getEventTime(),
                        event.getAction(), fallbackAction.keyCode,
                        event.getRepeatCount(), fallbackAction.metaState,
                        event.getDeviceId(), event.getScanCode(),
                        flags, event.getSource(), null);

                if (!interceptFallback(win, fallbackEvent, policyFlags)) {
                    fallbackEvent.recycle();
                    fallbackEvent = null;
                }

                if (initialDown) {
                    mFallbackActions.put(keyCode, fallbackAction);
                } else if (event.getAction() == KeyEvent.ACTION_UP) {
                    mFallbackActions.remove(keyCode);
                    fallbackAction.recycle();
                }
            }
        }

        if (DEBUG_INPUT) {
            if (fallbackEvent == null) {
                Slog.d(TAG, "No fallback.");
            } else {
                Slog.d(TAG, "Performing fallback: " + fallbackEvent);
            }
        }
        return fallbackEvent;
    }

    private boolean interceptFallback(WindowState win, KeyEvent fallbackEvent, int policyFlags) {
        int actions = interceptKeyBeforeQueueing(fallbackEvent, policyFlags);
        if ((actions & ACTION_PASS_TO_USER) != 0) {
            long delayMillis = interceptKeyBeforeDispatching(
                    win, fallbackEvent, policyFlags);
            if (delayMillis == 0) {
                return true;
            }
        }
        return false;
    }

    @Override
    public void registerShortcutKey(long shortcutCode, IShortcutService shortcutService)
            throws RemoteException {
        synchronized (mLock) {
            IShortcutService service = mShortcutKeyServices.get(shortcutCode);
            if (service != null && service.asBinder().pingBinder()) {
                throw new RemoteException("Key already exists.");
            }

            mShortcutKeyServices.put(shortcutCode, shortcutService);
        }
    }

    @Override
    public void onKeyguardOccludedChangedLw(boolean occluded) {
        if (mKeyguardDelegate != null && mKeyguardDelegate.isShowing()) {
            mPendingKeyguardOccluded = occluded;
            mKeyguardOccludedChanged = true;
        } else {
            setKeyguardOccludedLw(occluded, false /* force */);
        }
    }

    private int handleStartTransitionForKeyguardLw(int transit, long duration) {
        if (mKeyguardOccludedChanged) {
            if (DEBUG_KEYGUARD) Slog.d(TAG, "transition/occluded changed occluded="
                    + mPendingKeyguardOccluded);
            mKeyguardOccludedChanged = false;
            if (setKeyguardOccludedLw(mPendingKeyguardOccluded, false /* force */)) {
                return FINISH_LAYOUT_REDO_LAYOUT | FINISH_LAYOUT_REDO_WALLPAPER;
            }
        }
        if (AppTransition.isKeyguardGoingAwayTransit(transit)) {
            if (DEBUG_KEYGUARD) Slog.d(TAG, "Starting keyguard exit animation");
            startKeyguardExitAnimation(SystemClock.uptimeMillis(), duration);
        }
        return 0;
    }

    private void launchAssistLongPressAction() {
        performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);
        sendCloseSystemWindows(SYSTEM_DIALOG_REASON_ASSIST);

        // launch the search activity
        Intent intent = new Intent(Intent.ACTION_SEARCH_LONG_PRESS);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        try {
            // TODO: This only stops the factory-installed search manager.
            // Need to formalize an API to handle others
            SearchManager searchManager = getSearchManager();
            if (searchManager != null) {
                searchManager.stopSearch();
            }
            startActivityAsUser(intent, UserHandle.CURRENT);
        } catch (ActivityNotFoundException e) {
            Slog.w(TAG, "No activity to handle assist long press action.", e);
        }
    }

    private void launchAssistAction(String hint, int deviceId) {
        sendCloseSystemWindows(SYSTEM_DIALOG_REASON_ASSIST);
        if (!isUserSetupComplete()) {
            // Disable opening assist window during setup
            return;
        }
        Bundle args = null;
        if (deviceId > Integer.MIN_VALUE) {
            args = new Bundle();
            args.putInt(Intent.EXTRA_ASSIST_INPUT_DEVICE_ID, deviceId);
        }
        if ((mContext.getResources().getConfiguration().uiMode
                & Configuration.UI_MODE_TYPE_MASK) == Configuration.UI_MODE_TYPE_TELEVISION) {
            // On TV, use legacy handling until assistants are implemented in the proper way.
            ((SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE))
                    .launchLegacyAssist(hint, UserHandle.myUserId(), args);
        } else {
            if (hint != null) {
                if (args == null) {
                    args = new Bundle();
                }
                args.putBoolean(hint, true);
            }
            StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
            if (statusbar != null) {
                statusbar.startAssist(args);
            }
        }
    }

    private void startActivityAsUser(Intent intent, UserHandle handle) {
        if (isUserSetupComplete()) {
            mContext.startActivityAsUser(intent, handle);
        } else {
            Slog.i(TAG, "Not starting activity because user setup is in progress: " + intent);
        }
    }

    private SearchManager getSearchManager() {
        if (mSearchManager == null) {
            mSearchManager = (SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE);
        }
        return mSearchManager;
    }

    private void preloadRecentApps() {
        mPreloadedRecentApps = true;
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.preloadRecentApps();
        }
    }

    private void cancelPreloadRecentApps() {
        if (mPreloadedRecentApps) {
            mPreloadedRecentApps = false;
            StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
            if (statusbar != null) {
                statusbar.cancelPreloadRecentApps();
            }
        }
    }

    private void toggleRecentApps() {
        mPreloadedRecentApps = false; // preloading no longer needs to be canceled
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.toggleRecentApps();
        }
    }

    @Override
    public void showRecentApps() {
        mHandler.removeMessages(MSG_DISPATCH_SHOW_RECENTS);
        mHandler.obtainMessage(MSG_DISPATCH_SHOW_RECENTS).sendToTarget();
    }

    private void showRecentApps(boolean triggeredFromAltTab) {
        mPreloadedRecentApps = false; // preloading no longer needs to be canceled
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.showRecentApps(triggeredFromAltTab);
        }
    }

    private void toggleKeyboardShortcutsMenu(int deviceId) {
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.toggleKeyboardShortcutsMenu(deviceId);
        }
    }

    private void dismissKeyboardShortcutsMenu() {
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.dismissKeyboardShortcutsMenu();
        }
    }

    private void hideRecentApps(boolean triggeredFromAltTab, boolean triggeredFromHome) {
        mPreloadedRecentApps = false; // preloading no longer needs to be canceled
        StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
        if (statusbar != null) {
            statusbar.hideRecentApps(triggeredFromAltTab, triggeredFromHome);
        }
    }

    void launchHomeFromHotKey() {
        launchHomeFromHotKey(true /* awakenFromDreams */, true /*respectKeyguard*/);
    }

    /**
     * A home key -> launch home action was detected.  Take the appropriate action
     * given the situation with the keyguard.
     */
    void launchHomeFromHotKey(final boolean awakenFromDreams, final boolean respectKeyguard) {
        // Abort possibly stuck animations.
        mHandler.post(mWindowManagerFuncs::triggerAnimationFailsafe);

        if (respectKeyguard) {
            if (isKeyguardShowingAndNotOccluded()) {
                // don't launch home if keyguard showing
                return;
            } else if (mKeyguardOccluded && mKeyguardDelegate.isShowing()) {
                mKeyguardDelegate.dismiss(new KeyguardDismissCallback() {
                    @Override
                    public void onDismissSucceeded() throws RemoteException {
                        mHandler.post(() -> {
                            startDockOrHome(true /*fromHomeKey*/, awakenFromDreams);
                        });
                    }
                }, null /* message */);
                return;
            } else if (!mKeyguardOccluded && mKeyguardDelegate.isInputRestricted()) {
                // when in keyguard restricted mode, must first verify unlock
                // before launching home
                mKeyguardDelegate.verifyUnlock(new OnKeyguardExitResult() {
                    @Override
                    public void onKeyguardExitResult(boolean success) {
                        if (success) {
                            startDockOrHome(true /*fromHomeKey*/, awakenFromDreams);
                        }
                    }
                });
                return;
            }
        }

        // no keyguard stuff to worry about, just launch home!
        if (mRecentsVisible) {
            try {
                ActivityManager.getService().stopAppSwitches();
            } catch (RemoteException e) {}

            // Hide Recents and notify it to launch Home
            if (awakenFromDreams) {
                awakenDreams();
            }
            hideRecentApps(false, true);
        } else {
            // Otherwise, just launch Home
            startDockOrHome(true /*fromHomeKey*/, awakenFromDreams);
        }
    }

    private final Runnable mClearHideNavigationFlag = new Runnable() {
        @Override
        public void run() {
            synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
                // Clear flags.
                mForceClearedSystemUiFlags &=
                        ~View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
            }
            mWindowManagerFuncs.reevaluateStatusBarVisibility();
        }
    };

    /**
     * Input handler used while nav bar is hidden.  Captures any touch on the screen,
     * to determine when the nav bar should be shown and prevent applications from
     * receiving those touches.
     */
    final class HideNavInputEventReceiver extends InputEventReceiver {
        public HideNavInputEventReceiver(InputChannel inputChannel, Looper looper) {
            super(inputChannel, looper);
        }

        @Override
        public void onInputEvent(InputEvent event, int displayId) {
            boolean handled = false;
            try {
                if (event instanceof MotionEvent
                        && (event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) {
                    final MotionEvent motionEvent = (MotionEvent)event;
                    if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
                        // When the user taps down, we re-show the nav bar.
                        boolean changed = false;
                        synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
                            if (mInputConsumer == null) {
                                return;
                            }
                            // Any user activity always causes us to show the
                            // navigation controls, if they had been hidden.
                            // We also clear the low profile and only content
                            // flags so that tapping on the screen will atomically
                            // restore all currently hidden screen decorations.
                            int newVal = mResettingSystemUiFlags |
                                    View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
                                    View.SYSTEM_UI_FLAG_LOW_PROFILE |
                                    View.SYSTEM_UI_FLAG_FULLSCREEN;
                            if (mResettingSystemUiFlags != newVal) {
                                mResettingSystemUiFlags = newVal;
                                changed = true;
                            }
                            // We don't allow the system's nav bar to be hidden
                            // again for 1 second, to prevent applications from
                            // spamming us and keeping it from being shown.
                            newVal = mForceClearedSystemUiFlags |
                                    View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
                            if (mForceClearedSystemUiFlags != newVal) {
                                mForceClearedSystemUiFlags = newVal;
                                changed = true;
                                mHandler.postDelayed(mClearHideNavigationFlag, 1000);
                            }
                        }
                        if (changed) {
                            mWindowManagerFuncs.reevaluateStatusBarVisibility();
                        }
                    }
                }
            } finally {
                finishInputEvent(event, handled);
            }
        }
    }

    @Override
    public void setRecentsVisibilityLw(boolean visible) {
        mRecentsVisible = visible;
    }

    @Override
    public void setPipVisibilityLw(boolean visible) {
        mPictureInPictureVisible = visible;
    }

    @Override
    public void setNavBarVirtualKeyHapticFeedbackEnabledLw(boolean enabled) {
        mNavBarVirtualKeyHapticFeedbackEnabled = enabled;
    }

    @Override
    public int adjustSystemUiVisibilityLw(int visibility) {
        mStatusBarController.adjustSystemUiVisibilityLw(mLastSystemUiFlags, visibility);
        mNavigationBarController.adjustSystemUiVisibilityLw(mLastSystemUiFlags, visibility);

        // Reset any bits in mForceClearingStatusBarVisibility that
        // are now clear.
        mResettingSystemUiFlags &= visibility;
        // Clear any bits in the new visibility that are currently being
        // force cleared, before reporting it.
        return visibility & ~mResettingSystemUiFlags
                & ~mForceClearedSystemUiFlags;
    }

    @Override
    // TODO: Should probably be moved into DisplayFrames.
    public boolean getLayoutHintLw(WindowManager.LayoutParams attrs, Rect taskBounds,
            DisplayFrames displayFrames, Rect outFrame, Rect outContentInsets, Rect outStableInsets,
            Rect outOutsets, DisplayCutout.ParcelableWrapper outDisplayCutout) {
        final int fl = PolicyControl.getWindowFlags(null, attrs);
        final int pfl = attrs.privateFlags;
        final int requestedSysUiVis = PolicyControl.getSystemUiVisibility(null, attrs);
        final int sysUiVis = requestedSysUiVis | getImpliedSysUiFlagsForLayout(attrs);
        final int displayRotation = displayFrames.mRotation;
        final int displayWidth = displayFrames.mDisplayWidth;
        final int displayHeight = displayFrames.mDisplayHeight;

        final boolean useOutsets = outOutsets != null && shouldUseOutsets(attrs, fl);
        if (useOutsets) {
            int outset = ScreenShapeHelper.getWindowOutsetBottomPx(mContext.getResources());
            if (outset > 0) {
                if (displayRotation == Surface.ROTATION_0) {
                    outOutsets.bottom += outset;
                } else if (displayRotation == Surface.ROTATION_90) {
                    outOutsets.right += outset;
                } else if (displayRotation == Surface.ROTATION_180) {
                    outOutsets.top += outset;
                } else if (displayRotation == Surface.ROTATION_270) {
                    outOutsets.left += outset;
                }
            }
        }

        final boolean layoutInScreen = (fl & FLAG_LAYOUT_IN_SCREEN) != 0;
        final boolean layoutInScreenAndInsetDecor = layoutInScreen &&
                (fl & FLAG_LAYOUT_INSET_DECOR) != 0;
        final boolean screenDecor = (pfl & PRIVATE_FLAG_IS_SCREEN_DECOR) != 0;

        if (layoutInScreenAndInsetDecor && !screenDecor) {
            int availRight, availBottom;
            if (canHideNavigationBar() &&
                    (sysUiVis & View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) != 0) {
                outFrame.set(displayFrames.mUnrestricted);
                availRight = displayFrames.mUnrestricted.right;
                availBottom = displayFrames.mUnrestricted.bottom;
            } else {
                outFrame.set(displayFrames.mRestricted);
                availRight = displayFrames.mRestricted.right;
                availBottom = displayFrames.mRestricted.bottom;
            }
            outStableInsets.set(displayFrames.mStable.left, displayFrames.mStable.top,
                    availRight - displayFrames.mStable.right,
                    availBottom - displayFrames.mStable.bottom);

            if ((sysUiVis & View.SYSTEM_UI_FLAG_LAYOUT_STABLE) != 0) {
                if ((fl & FLAG_FULLSCREEN) != 0) {
                    outContentInsets.set(displayFrames.mStableFullscreen.left,
                            displayFrames.mStableFullscreen.top,
                            availRight - displayFrames.mStableFullscreen.right,
                            availBottom - displayFrames.mStableFullscreen.bottom);
                } else {
                    outContentInsets.set(outStableInsets);
                }
            } else if ((fl & FLAG_FULLSCREEN) != 0 || (fl & FLAG_LAYOUT_IN_OVERSCAN) != 0) {
                outContentInsets.setEmpty();
            } else {
                outContentInsets.set(displayFrames.mCurrent.left, displayFrames.mCurrent.top,
                        availRight - displayFrames.mCurrent.right,
                        availBottom - displayFrames.mCurrent.bottom);
            }

            if (taskBounds != null) {
                calculateRelevantTaskInsets(taskBounds, outContentInsets,
                        displayWidth, displayHeight);
                calculateRelevantTaskInsets(taskBounds, outStableInsets,
                        displayWidth, displayHeight);
                outFrame.intersect(taskBounds);
            }
            outDisplayCutout.set(displayFrames.mDisplayCutout.calculateRelativeTo(outFrame)
                    .getDisplayCutout());
            return mForceShowSystemBars;
        } else {
            if (layoutInScreen) {
                outFrame.set(displayFrames.mUnrestricted);
            } else {
                outFrame.set(displayFrames.mStable);
            }
            if (taskBounds != null) {
                outFrame.intersect(taskBounds);
            }

            outContentInsets.setEmpty();
            outStableInsets.setEmpty();
            outDisplayCutout.set(DisplayCutout.NO_CUTOUT);
            return mForceShowSystemBars;
        }
    }

    /**
     * For any given task bounds, the insets relevant for these bounds given the insets relevant
     * for the entire display.
     */
    private void calculateRelevantTaskInsets(Rect taskBounds, Rect inOutInsets, int displayWidth,
            int displayHeight) {
        mTmpRect.set(0, 0, displayWidth, displayHeight);
        mTmpRect.inset(inOutInsets);
        mTmpRect.intersect(taskBounds);
        int leftInset = mTmpRect.left - taskBounds.left;
        int topInset = mTmpRect.top - taskBounds.top;
        int rightInset = taskBounds.right - mTmpRect.right;
        int bottomInset = taskBounds.bottom - mTmpRect.bottom;
        inOutInsets.set(leftInset, topInset, rightInset, bottomInset);
    }

    private boolean shouldUseOutsets(WindowManager.LayoutParams attrs, int fl) {
        return attrs.type == TYPE_WALLPAPER || (fl & (WindowManager.LayoutParams.FLAG_FULLSCREEN
                | WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN)) != 0;
    }

    /** {@inheritDoc} */
    @Override
    public void beginLayoutLw(DisplayFrames displayFrames, int uiMode) {
        displayFrames.onBeginLayout();
        // TODO(multi-display): This doesn't seem right...Maybe only apply to default display?
        mSystemGestures.screenWidth = displayFrames.mUnrestricted.width();
        mSystemGestures.screenHeight = displayFrames.mUnrestricted.height();
        mDockLayer = 0x10000000;
        mStatusBarLayer = -1;

        // start with the current dock rect, which will be (0,0,displayWidth,displayHeight)
        final Rect pf = mTmpParentFrame;
        final Rect df = mTmpDisplayFrame;
        final Rect of = mTmpOverscanFrame;
        final Rect vf = mTmpVisibleFrame;
        final Rect dcf = mTmpDecorFrame;
        vf.set(displayFrames.mDock);
        of.set(displayFrames.mDock);
        df.set(displayFrames.mDock);
        pf.set(displayFrames.mDock);
        dcf.setEmpty();  // Decor frame N/A for system bars.

        if (displayFrames.mDisplayId == DEFAULT_DISPLAY) {
            // For purposes of putting out fake window up to steal focus, we will
            // drive nav being hidden only by whether it is requested.
            final int sysui = mLastSystemUiFlags;
            boolean navVisible = (sysui & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0;
            boolean navTranslucent = (sysui
                    & (View.NAVIGATION_BAR_TRANSLUCENT | View.NAVIGATION_BAR_TRANSPARENT)) != 0;
            boolean immersive = (sysui & View.SYSTEM_UI_FLAG_IMMERSIVE) != 0;
            boolean immersiveSticky = (sysui & View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) != 0;
            boolean navAllowedHidden = immersive || immersiveSticky;
            navTranslucent &= !immersiveSticky;  // transient trumps translucent
            boolean isKeyguardShowing = isStatusBarKeyguard() && !mKeyguardOccluded;
            if (!isKeyguardShowing) {
                navTranslucent &= areTranslucentBarsAllowed();
            }
            boolean statusBarExpandedNotKeyguard = !isKeyguardShowing && mStatusBar != null
                    && mStatusBar.getAttrs().height == MATCH_PARENT
                    && mStatusBar.getAttrs().width == MATCH_PARENT;

            // When the navigation bar isn't visible, we put up a fake input window to catch all
            // touch events. This way we can detect when the user presses anywhere to bring back the
            // nav bar and ensure the application doesn't see the event.
            if (navVisible || navAllowedHidden) {
                if (mInputConsumer != null) {
                    mHandler.sendMessage(
                            mHandler.obtainMessage(MSG_DISPOSE_INPUT_CONSUMER, mInputConsumer));
                    mInputConsumer = null;
                }
            } else if (mInputConsumer == null && mStatusBar != null && canHideNavigationBar()) {
                mInputConsumer = mWindowManagerFuncs.createInputConsumer(mHandler.getLooper(),
                        INPUT_CONSUMER_NAVIGATION,
                        (channel, looper) -> new HideNavInputEventReceiver(channel, looper));
                // As long as mInputConsumer is active, hover events are not dispatched to the app
                // and the pointer icon is likely to become stale. Hide it to avoid confusion.
                InputManager.getInstance().setPointerIconType(PointerIcon.TYPE_NULL);
            }

            // For purposes of positioning and showing the nav bar, if we have decided that it can't
            // be hidden (because of the screen aspect ratio), then take that into account.
            navVisible |= !canHideNavigationBar();

            boolean updateSysUiVisibility = layoutNavigationBar(displayFrames, uiMode, dcf,
                    navVisible, navTranslucent, navAllowedHidden, statusBarExpandedNotKeyguard);
            if (DEBUG_LAYOUT) Slog.i(TAG, "mDock rect:" + displayFrames.mDock);
            updateSysUiVisibility |= layoutStatusBar(
                    displayFrames, pf, df, of, vf, dcf, sysui, isKeyguardShowing);
            if (updateSysUiVisibility) {
                updateSystemUiVisibilityLw();
            }
        }
        layoutScreenDecorWindows(displayFrames, pf, df, dcf);

        if (displayFrames.mDisplayCutoutSafe.top > displayFrames.mUnrestricted.top) {
            // Make sure that the zone we're avoiding for the cutout is at least as tall as the
            // status bar; otherwise fullscreen apps will end up cutting halfway into the status
            // bar.
            displayFrames.mDisplayCutoutSafe.top = Math.max(displayFrames.mDisplayCutoutSafe.top,
                    displayFrames.mStable.top);
        }
    }

    private void layoutScreenDecorWindows(DisplayFrames displayFrames, Rect pf, Rect df, Rect dcf) {
        if (mScreenDecorWindows.isEmpty()) {
            return;
        }

        final int displayId = displayFrames.mDisplayId;
        final Rect dockFrame = displayFrames.mDock;
        final int displayHeight = displayFrames.mDisplayHeight;
        final int displayWidth = displayFrames.mDisplayWidth;

        for (int i = mScreenDecorWindows.size() - 1; i >= 0; --i) {
            final WindowState w = mScreenDecorWindows.valueAt(i);
            if (w.getDisplayId() != displayId || !w.isVisibleLw()) {
                // Skip if not on the same display or not visible.
                continue;
            }

            w.computeFrameLw(pf /* parentFrame */, df /* displayFrame */, df /* overlayFrame */,
                    df /* contentFrame */, df /* visibleFrame */, dcf /* decorFrame */,
                    df /* stableFrame */, df /* outsetFrame */, displayFrames.mDisplayCutout,
                    false /* parentFrameWasClippedByDisplayCutout */);
            final Rect frame = w.getFrameLw();

            if (frame.left <= 0 && frame.top <= 0) {
                // Docked at left or top.
                if (frame.bottom >= displayHeight) {
                    // Docked left.
                    dockFrame.left = Math.max(frame.right, dockFrame.left);
                } else if (frame.right >= displayWidth ) {
                    // Docked top.
                    dockFrame.top = Math.max(frame.bottom, dockFrame.top);
                } else {
                    Slog.w(TAG, "layoutScreenDecorWindows: Ignoring decor win=" + w
                            + " not docked on left or top of display. frame=" + frame
                            + " displayWidth=" + displayWidth + " displayHeight=" + displayHeight);
                }
            } else if (frame.right >= displayWidth && frame.bottom >= displayHeight) {
                // Docked at right or bottom.
                if (frame.top <= 0) {
                    // Docked right.
                    dockFrame.right = Math.min(frame.left, dockFrame.right);
                } else if (frame.left <= 0) {
                    // Docked bottom.
                    dockFrame.bottom = Math.min(frame.top, dockFrame.bottom);
                } else {
                    Slog.w(TAG, "layoutScreenDecorWindows: Ignoring decor win=" + w
                            + " not docked on right or bottom" + " of display. frame=" + frame
                            + " displayWidth=" + displayWidth + " displayHeight=" + displayHeight);
                }
            } else {
                // Screen decor windows are required to be docked on one of the sides of the screen.
                Slog.w(TAG, "layoutScreenDecorWindows: Ignoring decor win=" + w
                        + " not docked on one of the sides of the display. frame=" + frame
                        + " displayWidth=" + displayWidth + " displayHeight=" + displayHeight);
            }
        }

        displayFrames.mRestricted.set(dockFrame);
        displayFrames.mCurrent.set(dockFrame);
        displayFrames.mVoiceContent.set(dockFrame);
        displayFrames.mSystem.set(dockFrame);
        displayFrames.mContent.set(dockFrame);
        displayFrames.mRestrictedOverscan.set(dockFrame);
    }

    private boolean layoutStatusBar(DisplayFrames displayFrames, Rect pf, Rect df, Rect of, Rect vf,
            Rect dcf, int sysui, boolean isKeyguardShowing) {
        // decide where the status bar goes ahead of time
        if (mStatusBar == null) {
            return false;
        }
        // apply any navigation bar insets
        of.set(displayFrames.mUnrestricted);
        df.set(displayFrames.mUnrestricted);
        pf.set(displayFrames.mUnrestricted);
        vf.set(displayFrames.mStable);

        mStatusBarLayer = mStatusBar.getSurfaceLayer();

        // Let the status bar determine its size.
        mStatusBar.computeFrameLw(pf /* parentFrame */, df /* displayFrame */,
                vf /* overlayFrame */, vf /* contentFrame */, vf /* visibleFrame */,
                dcf /* decorFrame */, vf /* stableFrame */, vf /* outsetFrame */,
                displayFrames.mDisplayCutout, false /* parentFrameWasClippedByDisplayCutout */);

        // For layout, the status bar is always at the top with our fixed height.
        displayFrames.mStable.top = displayFrames.mUnrestricted.top
                + mStatusBarHeightForRotation[displayFrames.mRotation];

        // Tell the bar controller where the collapsed status bar content is
        mTmpRect.set(mStatusBar.getContentFrameLw());
        mTmpRect.intersect(displayFrames.mDisplayCutoutSafe);
        mTmpRect.top = mStatusBar.getContentFrameLw().top;  // Ignore top display cutout inset
        mTmpRect.bottom = displayFrames.mStable.top;  // Use collapsed status bar size
        mStatusBarController.setContentFrame(mTmpRect);

        boolean statusBarTransient = (sysui & View.STATUS_BAR_TRANSIENT) != 0;
        boolean statusBarTranslucent = (sysui
                & (View.STATUS_BAR_TRANSLUCENT | View.STATUS_BAR_TRANSPARENT)) != 0;
        if (!isKeyguardShowing) {
            statusBarTranslucent &= areTranslucentBarsAllowed();
        }

        // If the status bar is hidden, we don't want to cause windows behind it to scroll.
        if (mStatusBar.isVisibleLw() && !statusBarTransient) {
            // Status bar may go away, so the screen area it occupies is available to apps but just
            // covering them when the status bar is visible.
            final Rect dockFrame = displayFrames.mDock;
            dockFrame.top = displayFrames.mStable.top;
            displayFrames.mContent.set(dockFrame);
            displayFrames.mVoiceContent.set(dockFrame);
            displayFrames.mCurrent.set(dockFrame);

            if (DEBUG_LAYOUT) Slog.v(TAG, "Status bar: " + String.format(
                    "dock=%s content=%s cur=%s", dockFrame.toString(),
                    displayFrames.mContent.toString(), displayFrames.mCurrent.toString()));

            if (!mStatusBar.isAnimatingLw() && !statusBarTranslucent
                    && !mStatusBarController.wasRecentlyTranslucent()) {
                // If the opaque status bar is currently requested to be visible, and not in the
                // process of animating on or off, then we can tell the app that it is covered by it.
                displayFrames.mSystem.top = displayFrames.mStable.top;
            }
        }
        return mStatusBarController.checkHiddenLw();
    }

    private boolean layoutNavigationBar(DisplayFrames displayFrames, int uiMode, Rect dcf,
            boolean navVisible, boolean navTranslucent, boolean navAllowedHidden,
            boolean statusBarExpandedNotKeyguard) {
        if (mNavigationBar == null) {
            return false;
        }
        boolean transientNavBarShowing = mNavigationBarController.isTransientShowing();
        // Force the navigation bar to its appropriate place and size. We need to do this directly,
        // instead of relying on it to bubble up from the nav bar, because this needs to change
        // atomically with screen rotations.
        final int rotation = displayFrames.mRotation;
        final int displayHeight = displayFrames.mDisplayHeight;
        final int displayWidth = displayFrames.mDisplayWidth;
        final Rect dockFrame = displayFrames.mDock;
        mNavigationBarPosition = navigationBarPosition(displayWidth, displayHeight, rotation);

        final Rect cutoutSafeUnrestricted = mTmpRect;
        cutoutSafeUnrestricted.set(displayFrames.mUnrestricted);
        cutoutSafeUnrestricted.intersectUnchecked(displayFrames.mDisplayCutoutSafe);

        if (mNavigationBarPosition == NAV_BAR_BOTTOM) {
            // It's a system nav bar or a portrait screen; nav bar goes on bottom.
            final int top = cutoutSafeUnrestricted.bottom
                    - getNavigationBarHeight(rotation, uiMode);
            mTmpNavigationFrame.set(0, top, displayWidth, displayFrames.mUnrestricted.bottom);
            displayFrames.mStable.bottom = displayFrames.mStableFullscreen.bottom = top;
            if (transientNavBarShowing) {
                mNavigationBarController.setBarShowingLw(true);
            } else if (navVisible) {
                mNavigationBarController.setBarShowingLw(true);
                dockFrame.bottom = displayFrames.mRestricted.bottom
                        = displayFrames.mRestrictedOverscan.bottom = top;
            } else {
                // We currently want to hide the navigation UI - unless we expanded the status bar.
                mNavigationBarController.setBarShowingLw(statusBarExpandedNotKeyguard);
            }
            if (navVisible && !navTranslucent && !navAllowedHidden
                    && !mNavigationBar.isAnimatingLw()
                    && !mNavigationBarController.wasRecentlyTranslucent()) {
                // If the opaque nav bar is currently requested to be visible and not in the process
                // of animating on or off, then we can tell the app that it is covered by it.
                displayFrames.mSystem.bottom = top;
            }
        } else if (mNavigationBarPosition == NAV_BAR_RIGHT) {
            // Landscape screen; nav bar goes to the right.
            final int left = cutoutSafeUnrestricted.right
                    - getNavigationBarWidth(rotation, uiMode);
            mTmpNavigationFrame.set(left, 0, displayFrames.mUnrestricted.right, displayHeight);
            displayFrames.mStable.right = displayFrames.mStableFullscreen.right = left;
            if (transientNavBarShowing) {
                mNavigationBarController.setBarShowingLw(true);
            } else if (navVisible) {
                mNavigationBarController.setBarShowingLw(true);
                dockFrame.right = displayFrames.mRestricted.right
                        = displayFrames.mRestrictedOverscan.right = left;
            } else {
                // We currently want to hide the navigation UI - unless we expanded the status bar.
                mNavigationBarController.setBarShowingLw(statusBarExpandedNotKeyguard);
            }
            if (navVisible && !navTranslucent && !navAllowedHidden
                    && !mNavigationBar.isAnimatingLw()
                    && !mNavigationBarController.wasRecentlyTranslucent()) {
                // If the nav bar is currently requested to be visible, and not in the process of
                // animating on or off, then we can tell the app that it is covered by it.
                displayFrames.mSystem.right = left;
            }
        } else if (mNavigationBarPosition == NAV_BAR_LEFT) {
            // Seascape screen; nav bar goes to the left.
            final int right = cutoutSafeUnrestricted.left
                    + getNavigationBarWidth(rotation, uiMode);
            mTmpNavigationFrame.set(displayFrames.mUnrestricted.left, 0, right, displayHeight);
            displayFrames.mStable.left = displayFrames.mStableFullscreen.left = right;
            if (transientNavBarShowing) {
                mNavigationBarController.setBarShowingLw(true);
            } else if (navVisible) {
                mNavigationBarController.setBarShowingLw(true);
                dockFrame.left = displayFrames.mRestricted.left =
                        displayFrames.mRestrictedOverscan.left = right;
            } else {
                // We currently want to hide the navigation UI - unless we expanded the status bar.
                mNavigationBarController.setBarShowingLw(statusBarExpandedNotKeyguard);
            }
            if (navVisible && !navTranslucent && !navAllowedHidden
                    && !mNavigationBar.isAnimatingLw()
                    && !mNavigationBarController.wasRecentlyTranslucent()) {
                // If the nav bar is currently requested to be visible, and not in the process of
                // animating on or off, then we can tell the app that it is covered by it.
                displayFrames.mSystem.left = right;
            }
        }

        // Make sure the content and current rectangles are updated to account for the restrictions
        // from the navigation bar.
        displayFrames.mCurrent.set(dockFrame);
        displayFrames.mVoiceContent.set(dockFrame);
        displayFrames.mContent.set(dockFrame);
        mStatusBarLayer = mNavigationBar.getSurfaceLayer();
        // And compute the final frame.
        mNavigationBar.computeFrameLw(mTmpNavigationFrame, mTmpNavigationFrame,
                mTmpNavigationFrame, displayFrames.mDisplayCutoutSafe, mTmpNavigationFrame, dcf,
                mTmpNavigationFrame, displayFrames.mDisplayCutoutSafe,
                displayFrames.mDisplayCutout, false /* parentFrameWasClippedByDisplayCutout */);
        mNavigationBarController.setContentFrame(mNavigationBar.getContentFrameLw());

        if (DEBUG_LAYOUT) Slog.i(TAG, "mNavigationBar frame: " + mTmpNavigationFrame);
        return mNavigationBarController.checkHiddenLw();
    }

    @NavigationBarPosition
    private int navigationBarPosition(int displayWidth, int displayHeight, int displayRotation) {
        if (mNavigationBarCanMove && displayWidth > displayHeight) {
            if (displayRotation == Surface.ROTATION_270) {
                return NAV_BAR_LEFT;
            } else {
                return NAV_BAR_RIGHT;
            }
        }
        return NAV_BAR_BOTTOM;
    }

    /** {@inheritDoc} */
    @Override
    public int getSystemDecorLayerLw() {
        if (mStatusBar != null && mStatusBar.isVisibleLw()) {
            return mStatusBar.getSurfaceLayer();
        }

        if (mNavigationBar != null && mNavigationBar.isVisibleLw()) {
            return mNavigationBar.getSurfaceLayer();
        }

        return 0;
    }

    private void setAttachedWindowFrames(WindowState win, int fl, int adjust, WindowState attached,
            boolean insetDecors, Rect pf, Rect df, Rect of, Rect cf, Rect vf,
            DisplayFrames displayFrames) {
        if (!win.isInputMethodTarget() && attached.isInputMethodTarget()) {
            // Here's a special case: if the child window is not the 'dock window'
            // or input method target, and the window it is attached to is below
            // the dock window, then the frames we computed for the window it is
            // attached to can not be used because the dock is effectively part
            // of the underlying window and the attached window is floating on top
            // of the whole thing. So, we ignore the attached window and explicitly
            // compute the frames that would be appropriate without the dock.
            vf.set(displayFrames.mDock);
            cf.set(displayFrames.mDock);
            of.set(displayFrames.mDock);
            df.set(displayFrames.mDock);
        } else {
            // The effective display frame of the attached window depends on whether it is taking
            // care of insetting its content. If not, we need to use the parent's content frame so
            // that the entire window is positioned within that content. Otherwise we can use the
            // overscan frame and let the attached window take care of positioning its content
            // appropriately.
            if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                // Set the content frame of the attached window to the parent's decor frame
                // (same as content frame when IME isn't present) if specifically requested by
                // setting {@link WindowManager.LayoutParams#FLAG_LAYOUT_ATTACHED_IN_DECOR} flag.
                // Otherwise, use the overscan frame.
                cf.set((fl & FLAG_LAYOUT_ATTACHED_IN_DECOR) != 0
                        ? attached.getContentFrameLw() : attached.getOverscanFrameLw());
            } else {
                // If the window is resizing, then we want to base the content frame on our attached
                // content frame to resize...however, things can be tricky if the attached window is
                // NOT in resize mode, in which case its content frame will be larger.
                // Ungh. So to deal with that, make sure the content frame we end up using is not
                // covering the IM dock.
                cf.set(attached.getContentFrameLw());
                if (attached.isVoiceInteraction()) {
                    cf.intersectUnchecked(displayFrames.mVoiceContent);
                } else if (win.isInputMethodTarget() || attached.isInputMethodTarget()) {
                    cf.intersectUnchecked(displayFrames.mContent);
                }
            }
            df.set(insetDecors ? attached.getDisplayFrameLw() : cf);
            of.set(insetDecors ? attached.getOverscanFrameLw() : cf);
            vf.set(attached.getVisibleFrameLw());
        }
        // The LAYOUT_IN_SCREEN flag is used to determine whether the attached window should be
        // positioned relative to its parent or the entire screen.
        pf.set((fl & FLAG_LAYOUT_IN_SCREEN) == 0 ? attached.getFrameLw() : df);
    }

    private void applyStableConstraints(int sysui, int fl, Rect r, DisplayFrames displayFrames) {
        if ((sysui & View.SYSTEM_UI_FLAG_LAYOUT_STABLE) == 0) {
            return;
        }
        // If app is requesting a stable layout, don't let the content insets go below the stable
        // values.
        if ((fl & FLAG_FULLSCREEN) != 0) {
            r.intersectUnchecked(displayFrames.mStableFullscreen);
        } else {
            r.intersectUnchecked(displayFrames.mStable);
        }
    }

    private boolean canReceiveInput(WindowState win) {
        boolean notFocusable =
                (win.getAttrs().flags & WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE) != 0;
        boolean altFocusableIm =
                (win.getAttrs().flags & WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM) != 0;
        boolean notFocusableForIm = notFocusable ^ altFocusableIm;
        return !notFocusableForIm;
    }

    /** {@inheritDoc} */
    @Override
    public void layoutWindowLw(WindowState win, WindowState attached, DisplayFrames displayFrames) {
        // We've already done the navigation bar, status bar, and all screen decor windows. If the
        // status bar can receive input, we need to layout it again to accommodate for the IME
        // window.
        if ((win == mStatusBar && !canReceiveInput(win)) || win == mNavigationBar
                || mScreenDecorWindows.contains(win)) {
            return;
        }
        final WindowManager.LayoutParams attrs = win.getAttrs();
        final boolean isDefaultDisplay = win.isDefaultDisplay();
        final boolean needsToOffsetInputMethodTarget = isDefaultDisplay &&
                (win == mLastInputMethodTargetWindow && mLastInputMethodWindow != null);
        if (needsToOffsetInputMethodTarget) {
            if (DEBUG_LAYOUT) Slog.i(TAG, "Offset ime target window by the last ime window state");
            offsetInputMethodWindowLw(mLastInputMethodWindow, displayFrames);
        }

        final int type = attrs.type;
        final int fl = PolicyControl.getWindowFlags(win, attrs);
        final int pfl = attrs.privateFlags;
        final int sim = attrs.softInputMode;
        final int requestedSysUiFl = PolicyControl.getSystemUiVisibility(win, null);
        final int sysUiFl = requestedSysUiFl | getImpliedSysUiFlagsForLayout(attrs);

        final Rect pf = mTmpParentFrame;
        final Rect df = mTmpDisplayFrame;
        final Rect of = mTmpOverscanFrame;
        final Rect cf = mTmpContentFrame;
        final Rect vf = mTmpVisibleFrame;
        final Rect dcf = mTmpDecorFrame;
        final Rect sf = mTmpStableFrame;
        Rect osf = null;
        dcf.setEmpty();

        final boolean hasNavBar = (isDefaultDisplay && mHasNavigationBar
                && mNavigationBar != null && mNavigationBar.isVisibleLw());

        final int adjust = sim & SOFT_INPUT_MASK_ADJUST;

        final boolean requestedFullscreen = (fl & FLAG_FULLSCREEN) != 0
                || (requestedSysUiFl & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;

        final boolean layoutInScreen = (fl & FLAG_LAYOUT_IN_SCREEN) == FLAG_LAYOUT_IN_SCREEN;
        final boolean layoutInsetDecor = (fl & FLAG_LAYOUT_INSET_DECOR) == FLAG_LAYOUT_INSET_DECOR;

        sf.set(displayFrames.mStable);

        if (type == TYPE_INPUT_METHOD) {
            vf.set(displayFrames.mDock);
            cf.set(displayFrames.mDock);
            of.set(displayFrames.mDock);
            df.set(displayFrames.mDock);
            pf.set(displayFrames.mDock);
            // IM dock windows layout below the nav bar...
            pf.bottom = df.bottom = of.bottom = displayFrames.mUnrestricted.bottom;
            // ...with content insets above the nav bar
            cf.bottom = vf.bottom = displayFrames.mStable.bottom;
            if (mStatusBar != null && mFocusedWindow == mStatusBar && canReceiveInput(mStatusBar)) {
                // The status bar forces the navigation bar while it's visible. Make sure the IME
                // avoids the navigation bar in that case.
                if (mNavigationBarPosition == NAV_BAR_RIGHT) {
                    pf.right = df.right = of.right = cf.right = vf.right =
                            displayFrames.mStable.right;
                } else if (mNavigationBarPosition == NAV_BAR_LEFT) {
                    pf.left = df.left = of.left = cf.left = vf.left = displayFrames.mStable.left;
                }
            }
            // IM dock windows always go to the bottom of the screen.
            attrs.gravity = Gravity.BOTTOM;
            mDockLayer = win.getSurfaceLayer();
        } else if (type == TYPE_VOICE_INTERACTION) {
            of.set(displayFrames.mUnrestricted);
            df.set(displayFrames.mUnrestricted);
            pf.set(displayFrames.mUnrestricted);
            if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                cf.set(displayFrames.mDock);
            } else {
                cf.set(displayFrames.mContent);
            }
            if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                vf.set(displayFrames.mCurrent);
            } else {
                vf.set(cf);
            }
        } else if (type == TYPE_WALLPAPER) {
           layoutWallpaper(displayFrames, pf, df, of, cf);
        } else if (win == mStatusBar) {
            of.set(displayFrames.mUnrestricted);
            df.set(displayFrames.mUnrestricted);
            pf.set(displayFrames.mUnrestricted);
            cf.set(displayFrames.mStable);
            vf.set(displayFrames.mStable);

            if (adjust == SOFT_INPUT_ADJUST_RESIZE) {
                cf.bottom = displayFrames.mContent.bottom;
            } else {
                cf.bottom = displayFrames.mDock.bottom;
                vf.bottom = displayFrames.mContent.bottom;
            }
        } else {
            dcf.set(displayFrames.mSystem);
            final boolean inheritTranslucentDecor =
                    (attrs.privateFlags & PRIVATE_FLAG_INHERIT_TRANSLUCENT_DECOR) != 0;
            final boolean isAppWindow =
                    type >= FIRST_APPLICATION_WINDOW && type <= LAST_APPLICATION_WINDOW;
            final boolean topAtRest =
                    win == mTopFullscreenOpaqueWindowState && !win.isAnimatingLw();
            if (isAppWindow && !inheritTranslucentDecor && !topAtRest) {
                if ((sysUiFl & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0
                        && (fl & FLAG_FULLSCREEN) == 0
                        && (fl & FLAG_TRANSLUCENT_STATUS) == 0
                        && (fl & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) == 0
                        && (pfl & PRIVATE_FLAG_FORCE_DRAW_STATUS_BAR_BACKGROUND) == 0) {
                    // Ensure policy decor includes status bar
                    dcf.top = displayFrames.mStable.top;
                }
                if ((fl & FLAG_TRANSLUCENT_NAVIGATION) == 0
                        && (sysUiFl & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0
                        && (fl & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) == 0) {
                    // Ensure policy decor includes navigation bar
                    dcf.bottom = displayFrames.mStable.bottom;
                    dcf.right = displayFrames.mStable.right;
                }
            }

            if (layoutInScreen && layoutInsetDecor) {
                if (DEBUG_LAYOUT) Slog.v(TAG, "layoutWindowLw(" + attrs.getTitle()
                            + "): IN_SCREEN, INSET_DECOR");
                // This is the case for a normal activity window: we want it to cover all of the
                // screen space, and it can take care of moving its contents to account for screen
                // decorations that intrude into that space.
                if (attached != null) {
                    // If this window is attached to another, our display
                    // frame is the same as the one we are attached to.
                    setAttachedWindowFrames(win, fl, adjust, attached, true, pf, df, of, cf, vf,
                            displayFrames);
                } else {
                    if (type == TYPE_STATUS_BAR_PANEL || type == TYPE_STATUS_BAR_SUB_PANEL) {
                        // Status bar panels are the only windows who can go on top of the status
                        // bar. They are protected by the STATUS_BAR_SERVICE permission, so they
                        // have the same privileges as the status bar itself.
                        //
                        // However, they should still dodge the navigation bar if it exists.

                        pf.left = df.left = of.left = hasNavBar
                                ? displayFrames.mDock.left : displayFrames.mUnrestricted.left;
                        pf.top = df.top = of.top = displayFrames.mUnrestricted.top;
                        pf.right = df.right = of.right = hasNavBar
                                ? displayFrames.mRestricted.right
                                : displayFrames.mUnrestricted.right;
                        pf.bottom = df.bottom = of.bottom = hasNavBar
                                ? displayFrames.mRestricted.bottom
                                : displayFrames.mUnrestricted.bottom;

                        if (DEBUG_LAYOUT) Slog.v(TAG, String.format(
                                        "Laying out status bar window: (%d,%d - %d,%d)",
                                        pf.left, pf.top, pf.right, pf.bottom));
                    } else if ((fl & FLAG_LAYOUT_IN_OVERSCAN) != 0
                            && type >= FIRST_APPLICATION_WINDOW && type <= LAST_SUB_WINDOW) {
                        // Asking to layout into the overscan region, so give it that pure
                        // unrestricted area.
                        of.set(displayFrames.mOverscan);
                        df.set(displayFrames.mOverscan);
                        pf.set(displayFrames.mOverscan);
                    } else if (canHideNavigationBar()
                            && (sysUiFl & View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) != 0
                            && (type >= FIRST_APPLICATION_WINDOW && type <= LAST_SUB_WINDOW
                            || type == TYPE_VOLUME_OVERLAY)) {
                        // Asking for layout as if the nav bar is hidden, lets the application
                        // extend into the unrestricted overscan screen area. We only do this for
                        // application windows and certain system windows to ensure no window that
                        // can be above the nav bar can do this.
                        df.set(displayFrames.mOverscan);
                        pf.set(displayFrames.mOverscan);
                        // We need to tell the app about where the frame inside the overscan is, so
                        // it can inset its content by that amount -- it didn't ask to actually
                        // extend itself into the overscan region.
                        of.set(displayFrames.mUnrestricted);
                    } else {
                        df.set(displayFrames.mRestrictedOverscan);
                        pf.set(displayFrames.mRestrictedOverscan);
                        // We need to tell the app about where the frame inside the overscan
                        // is, so it can inset its content by that amount -- it didn't ask
                        // to actually extend itself into the overscan region.
                        of.set(displayFrames.mUnrestricted);
                    }

                    if ((fl & FLAG_FULLSCREEN) == 0) {
                        if (win.isVoiceInteraction()) {
                            cf.set(displayFrames.mVoiceContent);
                        } else {
                            if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                                cf.set(displayFrames.mDock);
                            } else {
                                cf.set(displayFrames.mContent);
                            }
                        }
                    } else {
                        // Full screen windows are always given a layout that is as if the status
                        // bar and other transient decors are gone. This is to avoid bad states when
                        // moving from a window that is not hiding the status bar to one that is.
                        cf.set(displayFrames.mRestricted);
                    }
                    applyStableConstraints(sysUiFl, fl, cf, displayFrames);
                    if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                        vf.set(displayFrames.mCurrent);
                    } else {
                        vf.set(cf);
                    }
                }
            } else if (layoutInScreen || (sysUiFl
                    & (View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION)) != 0) {
                if (DEBUG_LAYOUT) Slog.v(TAG, "layoutWindowLw(" + attrs.getTitle()
                        + "): IN_SCREEN");
                // A window that has requested to fill the entire screen just
                // gets everything, period.
                if (type == TYPE_STATUS_BAR_PANEL || type == TYPE_STATUS_BAR_SUB_PANEL) {
                    cf.set(displayFrames.mUnrestricted);
                    of.set(displayFrames.mUnrestricted);
                    df.set(displayFrames.mUnrestricted);
                    pf.set(displayFrames.mUnrestricted);
                    if (hasNavBar) {
                        pf.left = df.left = of.left = cf.left = displayFrames.mDock.left;
                        pf.right = df.right = of.right = cf.right = displayFrames.mRestricted.right;
                        pf.bottom = df.bottom = of.bottom = cf.bottom =
                                displayFrames.mRestricted.bottom;
                    }
                    if (DEBUG_LAYOUT) Slog.v(TAG, String.format(
                            "Laying out IN_SCREEN status bar window: (%d,%d - %d,%d)",
                            pf.left, pf.top, pf.right, pf.bottom));
                } else if (type == TYPE_NAVIGATION_BAR || type == TYPE_NAVIGATION_BAR_PANEL) {
                    // The navigation bar has Real Ultimate Power.
                    of.set(displayFrames.mUnrestricted);
                    df.set(displayFrames.mUnrestricted);
                    pf.set(displayFrames.mUnrestricted);
                    if (DEBUG_LAYOUT) Slog.v(TAG, String.format(
                                    "Laying out navigation bar window: (%d,%d - %d,%d)",
                                    pf.left, pf.top, pf.right, pf.bottom));
                } else if ((type == TYPE_SECURE_SYSTEM_OVERLAY || type == TYPE_SCREENSHOT)
                        && ((fl & FLAG_FULLSCREEN) != 0)) {
                    // Fullscreen secure system overlays get what they ask for. Screenshot region
                    // selection overlay should also expand to full screen.
                    cf.set(displayFrames.mOverscan);
                    of.set(displayFrames.mOverscan);
                    df.set(displayFrames.mOverscan);
                    pf.set(displayFrames.mOverscan);
                } else if (type == TYPE_BOOT_PROGRESS) {
                    // Boot progress screen always covers entire display.
                    cf.set(displayFrames.mOverscan);
                    of.set(displayFrames.mOverscan);
                    df.set(displayFrames.mOverscan);
                    pf.set(displayFrames.mOverscan);
                } else if ((fl & FLAG_LAYOUT_IN_OVERSCAN) != 0
                        && type >= FIRST_APPLICATION_WINDOW && type <= LAST_SUB_WINDOW) {
                    // Asking to layout into the overscan region, so give it that pure unrestricted
                    // area.
                    cf.set(displayFrames.mOverscan);
                    of.set(displayFrames.mOverscan);
                    df.set(displayFrames.mOverscan);
                    pf.set(displayFrames.mOverscan);
                } else if (canHideNavigationBar()
                        && (sysUiFl & View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) != 0
                        && (type == TYPE_STATUS_BAR
                            || type == TYPE_TOAST
                            || type == TYPE_DOCK_DIVIDER
                            || type == TYPE_VOICE_INTERACTION_STARTING
                            || (type >= FIRST_APPLICATION_WINDOW && type <= LAST_SUB_WINDOW))) {
                    // Asking for layout as if the nav bar is hidden, lets the
                    // application extend into the unrestricted screen area.  We
                    // only do this for application windows (or toasts) to ensure no window that
                    // can be above the nav bar can do this.
                    // XXX This assumes that an app asking for this will also
                    // ask for layout in only content.  We can't currently figure out
                    // what the screen would be if only laying out to hide the nav bar.
                    cf.set(displayFrames.mUnrestricted);
                    of.set(displayFrames.mUnrestricted);
                    df.set(displayFrames.mUnrestricted);
                    pf.set(displayFrames.mUnrestricted);
                } else if ((sysUiFl & View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN) != 0) {
                    of.set(displayFrames.mRestricted);
                    df.set(displayFrames.mRestricted);
                    pf.set(displayFrames.mRestricted);
                    if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                        cf.set(displayFrames.mDock);
                    } else {
                        cf.set(displayFrames.mContent);
                    }
                } else {
                    cf.set(displayFrames.mRestricted);
                    of.set(displayFrames.mRestricted);
                    df.set(displayFrames.mRestricted);
                    pf.set(displayFrames.mRestricted);
                }

                applyStableConstraints(sysUiFl, fl, cf,displayFrames);

                if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                    vf.set(displayFrames.mCurrent);
                } else {
                    vf.set(cf);
                }
            } else if (attached != null) {
                if (DEBUG_LAYOUT) Slog.v(TAG, "layoutWindowLw(" + attrs.getTitle()
                        + "): attached to " + attached);
                // A child window should be placed inside of the same visible
                // frame that its parent had.
                setAttachedWindowFrames(win, fl, adjust, attached, false, pf, df, of, cf, vf,
                        displayFrames);
            } else {
                if (DEBUG_LAYOUT) Slog.v(TAG, "layoutWindowLw(" + attrs.getTitle() +
                        "): normal window");
                // Otherwise, a normal window must be placed inside the content
                // of all screen decorations.
                if (type == TYPE_STATUS_BAR_PANEL) {
                    // Status bar panels can go on
                    // top of the status bar. They are protected by the STATUS_BAR_SERVICE
                    // permission, so they have the same privileges as the status bar itself.
                    cf.set(displayFrames.mRestricted);
                    of.set(displayFrames.mRestricted);
                    df.set(displayFrames.mRestricted);
                    pf.set(displayFrames.mRestricted);
                } else if (type == TYPE_TOAST || type == TYPE_SYSTEM_ALERT) {
                    // These dialogs are stable to interim decor changes.
                    cf.set(displayFrames.mStable);
                    of.set(displayFrames.mStable);
                    df.set(displayFrames.mStable);
                    pf.set(displayFrames.mStable);
                } else {
                    pf.set(displayFrames.mContent);
                    if (win.isVoiceInteraction()) {
                        cf.set(displayFrames.mVoiceContent);
                        of.set(displayFrames.mVoiceContent);
                        df.set(displayFrames.mVoiceContent);
                    } else if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                        cf.set(displayFrames.mDock);
                        of.set(displayFrames.mDock);
                        df.set(displayFrames.mDock);
                    } else {
                        cf.set(displayFrames.mContent);
                        of.set(displayFrames.mContent);
                        df.set(displayFrames.mContent);
                    }
                    if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                        vf.set(displayFrames.mCurrent);
                    } else {
                        vf.set(cf);
                    }
                }
            }
        }

        boolean parentFrameWasClippedByDisplayCutout = false;
        final int cutoutMode = attrs.layoutInDisplayCutoutMode;
        final boolean attachedInParent = attached != null && !layoutInScreen;
        final boolean requestedHideNavigation =
                (requestedSysUiFl & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) != 0;

        // TYPE_BASE_APPLICATION windows are never considered floating here because they don't get
        // cropped / shifted to the displayFrame in WindowState.
        final boolean floatingInScreenWindow = !attrs.isFullscreen() && layoutInScreen
                && type != TYPE_BASE_APPLICATION;

        // Ensure that windows with a DEFAULT or NEVER display cutout mode are laid out in
        // the cutout safe zone.
        if (cutoutMode != LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS) {
            final Rect displayCutoutSafeExceptMaybeBars = mTmpDisplayCutoutSafeExceptMaybeBarsRect;
            displayCutoutSafeExceptMaybeBars.set(displayFrames.mDisplayCutoutSafe);
            if (layoutInScreen && layoutInsetDecor && !requestedFullscreen
                    && cutoutMode == LAYOUT_IN_DISPLAY_CUTOUT_MODE_DEFAULT) {
                // At the top we have the status bar, so apps that are
                // LAYOUT_IN_SCREEN | LAYOUT_INSET_DECOR but not FULLSCREEN
                // already expect that there's an inset there and we don't need to exclude
                // the window from that area.
                displayCutoutSafeExceptMaybeBars.top = Integer.MIN_VALUE;
            }
            if (layoutInScreen && layoutInsetDecor && !requestedHideNavigation
                    && cutoutMode == LAYOUT_IN_DISPLAY_CUTOUT_MODE_DEFAULT) {
                // Same for the navigation bar.
                switch (mNavigationBarPosition) {
                    case NAV_BAR_BOTTOM:
                        displayCutoutSafeExceptMaybeBars.bottom = Integer.MAX_VALUE;
                        break;
                    case NAV_BAR_RIGHT:
                        displayCutoutSafeExceptMaybeBars.right = Integer.MAX_VALUE;
                        break;
                    case NAV_BAR_LEFT:
                        displayCutoutSafeExceptMaybeBars.left = Integer.MIN_VALUE;
                        break;
                }
            }
            if (type == TYPE_INPUT_METHOD && mNavigationBarPosition == NAV_BAR_BOTTOM) {
                // The IME can always extend under the bottom cutout if the navbar is there.
                displayCutoutSafeExceptMaybeBars.bottom = Integer.MAX_VALUE;
            }
            // Windows that are attached to a parent and laid out in said parent already avoid
            // the cutout according to that parent and don't need to be further constrained.
            // Floating IN_SCREEN windows get what they ask for and lay out in the full screen.
            // They will later be cropped or shifted using the displayFrame in WindowState,
            // which prevents overlap with the DisplayCutout.
            if (!attachedInParent && !floatingInScreenWindow) {
                mTmpRect.set(pf);
                pf.intersectUnchecked(displayCutoutSafeExceptMaybeBars);
                parentFrameWasClippedByDisplayCutout |= !mTmpRect.equals(pf);
            }
            // Make sure that NO_LIMITS windows clipped to the display don't extend under the
            // cutout.
            df.intersectUnchecked(displayCutoutSafeExceptMaybeBars);
        }

        // Content should never appear in the cutout.
        cf.intersectUnchecked(displayFrames.mDisplayCutoutSafe);

        // TYPE_SYSTEM_ERROR is above the NavigationBar so it can't be allowed to extend over it.
        // Also, we don't allow windows in multi-window mode to extend out of the screen.
        if ((fl & FLAG_LAYOUT_NO_LIMITS) != 0 && type != TYPE_SYSTEM_ERROR
                && !win.isInMultiWindowMode()) {
            df.left = df.top = -10000;
            df.right = df.bottom = 10000;
            if (type != TYPE_WALLPAPER) {
                of.left = of.top = cf.left = cf.top = vf.left = vf.top = -10000;
                of.right = of.bottom = cf.right = cf.bottom = vf.right = vf.bottom = 10000;
            }
        }

        // If the device has a chin (e.g. some watches), a dead area at the bottom of the screen we
        // need to provide information to the clients that want to pretend that you can draw there.
        // We only want to apply outsets to certain types of windows. For example, we never want to
        // apply the outsets to floating dialogs, because they wouldn't make sense there.
        final boolean useOutsets = shouldUseOutsets(attrs, fl);
        if (isDefaultDisplay && useOutsets) {
            osf = mTmpOutsetFrame;
            osf.set(cf.left, cf.top, cf.right, cf.bottom);
            int outset = ScreenShapeHelper.getWindowOutsetBottomPx(mContext.getResources());
            if (outset > 0) {
                int rotation = displayFrames.mRotation;
                if (rotation == Surface.ROTATION_0) {
                    osf.bottom += outset;
                } else if (rotation == Surface.ROTATION_90) {
                    osf.right += outset;
                } else if (rotation == Surface.ROTATION_180) {
                    osf.top -= outset;
                } else if (rotation == Surface.ROTATION_270) {
                    osf.left -= outset;
                }
                if (DEBUG_LAYOUT) Slog.v(TAG, "applying bottom outset of " + outset
                        + " with rotation " + rotation + ", result: " + osf);
            }
        }

        if (DEBUG_LAYOUT) Slog.v(TAG, "Compute frame " + attrs.getTitle()
                + ": sim=#" + Integer.toHexString(sim)
                + " attach=" + attached + " type=" + type
                + String.format(" flags=0x%08x", fl)
                + " pf=" + pf.toShortString() + " df=" + df.toShortString()
                + " of=" + of.toShortString()
                + " cf=" + cf.toShortString() + " vf=" + vf.toShortString()
                + " dcf=" + dcf.toShortString()
                + " sf=" + sf.toShortString()
                + " osf=" + (osf == null ? "null" : osf.toShortString()));

        win.computeFrameLw(pf, df, of, cf, vf, dcf, sf, osf, displayFrames.mDisplayCutout,
                parentFrameWasClippedByDisplayCutout);
        // Dock windows carve out the bottom of the screen, so normal windows
        // can't appear underneath them.
        if (type == TYPE_INPUT_METHOD && win.isVisibleLw()
                && !win.getGivenInsetsPendingLw()) {
            setLastInputMethodWindowLw(null, null);
            offsetInputMethodWindowLw(win, displayFrames);
        }
        if (type == TYPE_VOICE_INTERACTION && win.isVisibleLw()
                && !win.getGivenInsetsPendingLw()) {
            offsetVoiceInputWindowLw(win, displayFrames);
        }
    }

    private void layoutWallpaper(DisplayFrames displayFrames, Rect pf, Rect df, Rect of, Rect cf) {
        // The wallpaper has Real Ultimate Power, but we want to tell it about the overscan area.
        df.set(displayFrames.mOverscan);
        pf.set(displayFrames.mOverscan);
        cf.set(displayFrames.mUnrestricted);
        of.set(displayFrames.mUnrestricted);
    }

    private void offsetInputMethodWindowLw(WindowState win, DisplayFrames displayFrames) {
        int top = Math.max(win.getDisplayFrameLw().top, win.getContentFrameLw().top);
        top += win.getGivenContentInsetsLw().top;
        displayFrames.mContent.bottom = Math.min(displayFrames.mContent.bottom, top);
        displayFrames.mVoiceContent.bottom = Math.min(displayFrames.mVoiceContent.bottom, top);
        top = win.getVisibleFrameLw().top;
        top += win.getGivenVisibleInsetsLw().top;
        displayFrames.mCurrent.bottom = Math.min(displayFrames.mCurrent.bottom, top);
        if (DEBUG_LAYOUT) Slog.v(TAG, "Input method: mDockBottom="
                + displayFrames.mDock.bottom + " mContentBottom="
                + displayFrames.mContent.bottom + " mCurBottom=" + displayFrames.mCurrent.bottom);
    }

    private void offsetVoiceInputWindowLw(WindowState win, DisplayFrames displayFrames) {
        int top = Math.max(win.getDisplayFrameLw().top, win.getContentFrameLw().top);
        top += win.getGivenContentInsetsLw().top;
        displayFrames.mVoiceContent.bottom = Math.min(displayFrames.mVoiceContent.bottom, top);
    }

    /** {@inheritDoc} */
    @Override
    public void beginPostLayoutPolicyLw(int displayWidth, int displayHeight) {
        mTopFullscreenOpaqueWindowState = null;
        mTopFullscreenOpaqueOrDimmingWindowState = null;
        mTopDockedOpaqueWindowState = null;
        mTopDockedOpaqueOrDimmingWindowState = null;
        mForceStatusBar = false;
        mForceStatusBarFromKeyguard = false;
        mForceStatusBarTransparent = false;
        mForcingShowNavBar = false;
        mForcingShowNavBarLayer = -1;

        mAllowLockscreenWhenOn = false;
        mShowingDream = false;
        mWindowSleepTokenNeeded = false;
    }

    /** {@inheritDoc} */
    @Override
    public void applyPostLayoutPolicyLw(WindowState win, WindowManager.LayoutParams attrs,
            WindowState attached, WindowState imeTarget) {
        final boolean affectsSystemUi = win.canAffectSystemUiFlags();
        if (DEBUG_LAYOUT) Slog.i(TAG, "Win " + win + ": affectsSystemUi=" + affectsSystemUi);
        applyKeyguardPolicyLw(win, imeTarget);
        final int fl = PolicyControl.getWindowFlags(win, attrs);
        if (mTopFullscreenOpaqueWindowState == null && affectsSystemUi
                && attrs.type == TYPE_INPUT_METHOD) {
            mForcingShowNavBar = true;
            mForcingShowNavBarLayer = win.getSurfaceLayer();
        }
        if (attrs.type == TYPE_STATUS_BAR) {
            if ((attrs.privateFlags & PRIVATE_FLAG_KEYGUARD) != 0) {
                mForceStatusBarFromKeyguard = true;
            }
            if ((attrs.privateFlags & PRIVATE_FLAG_FORCE_STATUS_BAR_VISIBLE_TRANSPARENT) != 0) {
                mForceStatusBarTransparent = true;
            }
        }

        boolean appWindow = attrs.type >= FIRST_APPLICATION_WINDOW
                && attrs.type < FIRST_SYSTEM_WINDOW;
        final int windowingMode = win.getWindowingMode();
        final boolean inFullScreenOrSplitScreenSecondaryWindowingMode =
                windowingMode == WINDOWING_MODE_FULLSCREEN
                        || windowingMode == WINDOWING_MODE_SPLIT_SCREEN_SECONDARY;
        if (mTopFullscreenOpaqueWindowState == null && affectsSystemUi) {
            if ((fl & FLAG_FORCE_NOT_FULLSCREEN) != 0) {
                mForceStatusBar = true;
            }
            if (attrs.type == TYPE_DREAM) {
                // If the lockscreen was showing when the dream started then wait
                // for the dream to draw before hiding the lockscreen.
                if (!mDreamingLockscreen
                        || (win.isVisibleLw() && win.hasDrawnLw())) {
                    mShowingDream = true;
                    appWindow = true;
                }
            }

            // For app windows that are not attached, we decide if all windows in the app they
            // represent should be hidden or if we should hide the lockscreen. For attached app
            // windows we defer the decision to the window it is attached to.
            if (appWindow && attached == null) {
                if (attrs.isFullscreen() && inFullScreenOrSplitScreenSecondaryWindowingMode) {
                    if (DEBUG_LAYOUT) Slog.v(TAG, "Fullscreen window: " + win);
                    mTopFullscreenOpaqueWindowState = win;
                    if (mTopFullscreenOpaqueOrDimmingWindowState == null) {
                        mTopFullscreenOpaqueOrDimmingWindowState = win;
                    }
                    if ((fl & FLAG_ALLOW_LOCK_WHILE_SCREEN_ON) != 0) {
                        mAllowLockscreenWhenOn = true;
                    }
                }
            }
        }

        // Voice interaction overrides both top fullscreen and top docked.
        if (affectsSystemUi && win.getAttrs().type == TYPE_VOICE_INTERACTION) {
            if (mTopFullscreenOpaqueWindowState == null) {
                mTopFullscreenOpaqueWindowState = win;
                if (mTopFullscreenOpaqueOrDimmingWindowState == null) {
                    mTopFullscreenOpaqueOrDimmingWindowState = win;
                }
            }
            if (mTopDockedOpaqueWindowState == null) {
                mTopDockedOpaqueWindowState = win;
                if (mTopDockedOpaqueOrDimmingWindowState == null) {
                    mTopDockedOpaqueOrDimmingWindowState = win;
                }
            }
        }

        // Keep track of the window if it's dimming but not necessarily fullscreen.
        if (mTopFullscreenOpaqueOrDimmingWindowState == null && affectsSystemUi
                && win.isDimming() && inFullScreenOrSplitScreenSecondaryWindowingMode) {
            mTopFullscreenOpaqueOrDimmingWindowState = win;
        }

        // We need to keep track of the top "fullscreen" opaque window for the docked stack
        // separately, because both the "real fullscreen" opaque window and the one for the docked
        // stack can control View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.
        if (mTopDockedOpaqueWindowState == null && affectsSystemUi && appWindow && attached == null
                && attrs.isFullscreen() && windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) {
            mTopDockedOpaqueWindowState = win;
            if (mTopDockedOpaqueOrDimmingWindowState == null) {
                mTopDockedOpaqueOrDimmingWindowState = win;
            }
        }

        // Also keep track of any windows that are dimming but not necessarily fullscreen in the
        // docked stack.
        if (mTopDockedOpaqueOrDimmingWindowState == null && affectsSystemUi && win.isDimming()
                && windowingMode == WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) {
            mTopDockedOpaqueOrDimmingWindowState = win;
        }

        // Take note if a window wants to acquire a sleep token.
        if (win.isVisibleLw() && (attrs.privateFlags & PRIVATE_FLAG_ACQUIRES_SLEEP_TOKEN) != 0
                && win.canAcquireSleepToken()) {
            mWindowSleepTokenNeeded = true;
        }
    }

    private void applyKeyguardPolicyLw(WindowState win, WindowState imeTarget) {
        if (canBeHiddenByKeyguardLw(win)) {
            if (shouldBeHiddenByKeyguard(win, imeTarget)) {
                win.hideLw(false /* doAnimation */);
            } else {
                win.showLw(false /* doAnimation */);
            }
        }
    }

    /** {@inheritDoc} */
    @Override
    public int finishPostLayoutPolicyLw() {
        int changes = 0;
        boolean topIsFullscreen = false;

        final WindowManager.LayoutParams lp = (mTopFullscreenOpaqueWindowState != null)
                ? mTopFullscreenOpaqueWindowState.getAttrs()
                : null;

        // If we are not currently showing a dream then remember the current
        // lockscreen state.  We will use this to determine whether the dream
        // started while the lockscreen was showing and remember this state
        // while the dream is showing.
        if (!mShowingDream) {
            mDreamingLockscreen = isKeyguardShowingAndNotOccluded();
            if (mDreamingSleepTokenNeeded) {
                mDreamingSleepTokenNeeded = false;
                mHandler.obtainMessage(MSG_UPDATE_DREAMING_SLEEP_TOKEN, 0, 1).sendToTarget();
            }
        } else {
            if (!mDreamingSleepTokenNeeded) {
                mDreamingSleepTokenNeeded = true;
                mHandler.obtainMessage(MSG_UPDATE_DREAMING_SLEEP_TOKEN, 1, 1).sendToTarget();
            }
        }

        if (mStatusBar != null) {
            if (DEBUG_LAYOUT) Slog.i(TAG, "force=" + mForceStatusBar
                    + " forcefkg=" + mForceStatusBarFromKeyguard
                    + " top=" + mTopFullscreenOpaqueWindowState);
            boolean shouldBeTransparent = mForceStatusBarTransparent
                    && !mForceStatusBar
                    && !mForceStatusBarFromKeyguard;
            if (!shouldBeTransparent) {
                mStatusBarController.setShowTransparent(false /* transparent */);
            } else if (!mStatusBar.isVisibleLw()) {
                mStatusBarController.setShowTransparent(true /* transparent */);
            }

            WindowManager.LayoutParams statusBarAttrs = mStatusBar.getAttrs();
            boolean statusBarExpanded = statusBarAttrs.height == MATCH_PARENT
                    && statusBarAttrs.width == MATCH_PARENT;
            boolean topAppHidesStatusBar = topAppHidesStatusBar();
            if (mForceStatusBar || mForceStatusBarFromKeyguard || mForceStatusBarTransparent
                    || statusBarExpanded) {
                if (DEBUG_LAYOUT) Slog.v(TAG, "Showing status bar: forced");
                if (mStatusBarController.setBarShowingLw(true)) {
                    changes |= FINISH_LAYOUT_REDO_LAYOUT;
                }
                // Maintain fullscreen layout until incoming animation is complete.
                topIsFullscreen = mTopIsFullscreen && mStatusBar.isAnimatingLw();
                // Transient status bar on the lockscreen is not allowed
                if ((mForceStatusBarFromKeyguard || statusBarExpanded)
                        && mStatusBarController.isTransientShowing()) {
                    mStatusBarController.updateVisibilityLw(false /*transientAllowed*/,
                            mLastSystemUiFlags, mLastSystemUiFlags);
                }
                if (statusBarExpanded && mNavigationBar != null) {
                    if (mNavigationBarController.setBarShowingLw(true)) {
                        changes |= FINISH_LAYOUT_REDO_LAYOUT;
                    }
                }
            } else if (mTopFullscreenOpaqueWindowState != null) {
                topIsFullscreen = topAppHidesStatusBar;
                // The subtle difference between the window for mTopFullscreenOpaqueWindowState
                // and mTopIsFullscreen is that mTopIsFullscreen is set only if the window
                // has the FLAG_FULLSCREEN set.  Not sure if there is another way that to be the
                // case though.
                if (mStatusBarController.isTransientShowing()) {
                    if (mStatusBarController.setBarShowingLw(true)) {
                        changes |= FINISH_LAYOUT_REDO_LAYOUT;
                    }
                } else if (topIsFullscreen
                        && !mWindowManagerInternal.isStackVisible(WINDOWING_MODE_FREEFORM)
                        && !mWindowManagerInternal.isStackVisible(
                                WINDOWING_MODE_SPLIT_SCREEN_PRIMARY)) {
                    if (DEBUG_LAYOUT) Slog.v(TAG, "** HIDING status bar");
                    if (mStatusBarController.setBarShowingLw(false)) {
                        changes |= FINISH_LAYOUT_REDO_LAYOUT;
                    } else {
                        if (DEBUG_LAYOUT) Slog.v(TAG, "Status bar already hiding");
                    }
                } else {
                    if (DEBUG_LAYOUT) Slog.v(TAG, "** SHOWING status bar: top is not fullscreen");
                    if (mStatusBarController.setBarShowingLw(true)) {
                        changes |= FINISH_LAYOUT_REDO_LAYOUT;
                    }
                    topAppHidesStatusBar = false;
                }
            }
            mStatusBarController.setTopAppHidesStatusBar(topAppHidesStatusBar);
        }

        if (mTopIsFullscreen != topIsFullscreen) {
            if (!topIsFullscreen) {
                // Force another layout when status bar becomes fully shown.
                changes |= FINISH_LAYOUT_REDO_LAYOUT;
            }
            mTopIsFullscreen = topIsFullscreen;
        }

        if ((updateSystemUiVisibilityLw()&SYSTEM_UI_CHANGING_LAYOUT) != 0) {
            // If the navigation bar has been hidden or shown, we need to do another
            // layout pass to update that window.
            changes |= FINISH_LAYOUT_REDO_LAYOUT;
        }

        if (mShowingDream != mLastShowingDream) {
            mLastShowingDream = mShowingDream;
            mWindowManagerFuncs.notifyShowingDreamChanged();
        }

        updateWindowSleepToken();

        // update since mAllowLockscreenWhenOn might have changed
        updateLockScreenTimeout();
        return changes;
    }

    private void updateWindowSleepToken() {
        if (mWindowSleepTokenNeeded && !mLastWindowSleepTokenNeeded) {
            mHandler.removeCallbacks(mReleaseSleepTokenRunnable);
            mHandler.post(mAcquireSleepTokenRunnable);
        } else if (!mWindowSleepTokenNeeded && mLastWindowSleepTokenNeeded) {
            mHandler.removeCallbacks(mAcquireSleepTokenRunnable);
            mHandler.post(mReleaseSleepTokenRunnable);
        }
        mLastWindowSleepTokenNeeded = mWindowSleepTokenNeeded;
    }

    /**
     * @return Whether the top app should hide the statusbar based on the top fullscreen opaque
     *         window.
     */
    private boolean topAppHidesStatusBar() {
        if (mTopFullscreenOpaqueWindowState == null) {
            return false;
        }
        final int fl = PolicyControl.getWindowFlags(null,
                mTopFullscreenOpaqueWindowState.getAttrs());
        if (localLOGV) {
            Slog.d(TAG, "frame: " + mTopFullscreenOpaqueWindowState.getFrameLw());
            Slog.d(TAG, "attr: " + mTopFullscreenOpaqueWindowState.getAttrs()
                    + " lp.flags=0x" + Integer.toHexString(fl));
        }
        return (fl & LayoutParams.FLAG_FULLSCREEN) != 0
                || (mLastSystemUiFlags & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;
    }

    /**
     * Updates the occluded state of the Keyguard.
     *
     * @return Whether the flags have changed and we have to redo the layout.
     */
    private boolean setKeyguardOccludedLw(boolean isOccluded, boolean force) {
        if (DEBUG_KEYGUARD) Slog.d(TAG, "setKeyguardOccluded occluded=" + isOccluded);
        final boolean wasOccluded = mKeyguardOccluded;
        final boolean showing = mKeyguardDelegate.isShowing();
        final boolean changed = wasOccluded != isOccluded || force;
        if (!isOccluded && changed && showing) {
            mKeyguardOccluded = false;
            mKeyguardDelegate.setOccluded(false, true /* animate */);
            if (mStatusBar != null) {
                mStatusBar.getAttrs().privateFlags |= PRIVATE_FLAG_KEYGUARD;
                if (!mKeyguardDelegate.hasLockscreenWallpaper()) {
                    mStatusBar.getAttrs().flags |= FLAG_SHOW_WALLPAPER;
                }
            }
            return true;
        } else if (isOccluded && changed && showing) {
            mKeyguardOccluded = true;
            mKeyguardDelegate.setOccluded(true, false /* animate */);
            if (mStatusBar != null) {
                mStatusBar.getAttrs().privateFlags &= ~PRIVATE_FLAG_KEYGUARD;
                mStatusBar.getAttrs().flags &= ~FLAG_SHOW_WALLPAPER;
            }
            return true;
        } else if (changed) {
            mKeyguardOccluded = isOccluded;
            mKeyguardDelegate.setOccluded(isOccluded, false /* animate */);
            return false;
        } else {
            return false;
        }
    }

    private boolean isStatusBarKeyguard() {
        return mStatusBar != null
                && (mStatusBar.getAttrs().privateFlags & PRIVATE_FLAG_KEYGUARD) != 0;
    }

    @Override
    public boolean allowAppAnimationsLw() {
        return !mShowingDream;
    }

    @Override
    public int focusChangedLw(WindowState lastFocus, WindowState newFocus) {
        mFocusedWindow = newFocus;
        if ((updateSystemUiVisibilityLw()&SYSTEM_UI_CHANGING_LAYOUT) != 0) {
            // If the navigation bar has been hidden or shown, we need to do another
            // layout pass to update that window.
            return FINISH_LAYOUT_REDO_LAYOUT;
        }
        return 0;
    }

    /** {@inheritDoc} */
    @Override
    public void notifyLidSwitchChanged(long whenNanos, boolean lidOpen) {
        // lid changed state
        final int newLidState = lidOpen ? LID_OPEN : LID_CLOSED;
        if (newLidState == mLidState) {
            return;
        }

        mLidState = newLidState;
        applyLidSwitchState();
        updateRotation(true);

        if (lidOpen) {
            wakeUp(SystemClock.uptimeMillis(), mAllowTheaterModeWakeFromLidSwitch,
                    "android.policy:LID");
        } else if (!mLidControlsSleep) {
            mPowerManager.userActivity(SystemClock.uptimeMillis(), false);
        }
    }

    @Override
    public void notifyCameraLensCoverSwitchChanged(long whenNanos, boolean lensCovered) {
        int lensCoverState = lensCovered ? CAMERA_LENS_COVERED : CAMERA_LENS_UNCOVERED;
        if (mCameraLensCoverState == lensCoverState) {
            return;
        }
        if (mCameraLensCoverState == CAMERA_LENS_COVERED &&
                lensCoverState == CAMERA_LENS_UNCOVERED) {
            Intent intent;
            final boolean keyguardActive = mKeyguardDelegate == null ? false :
                    mKeyguardDelegate.isShowing();
            if (keyguardActive) {
                intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE);
            } else {
                intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA);
            }
            wakeUp(whenNanos / 1000000, mAllowTheaterModeWakeFromCameraLens,
                    "android.policy:CAMERA_COVER");
            startActivityAsUser(intent, UserHandle.CURRENT_OR_SELF);
        }
        mCameraLensCoverState = lensCoverState;
    }

    void setHdmiPlugged(boolean plugged) {
        if (mHdmiPlugged != plugged) {
            mHdmiPlugged = plugged;
            updateRotation(true, true);
            Intent intent = new Intent(ACTION_HDMI_PLUGGED);
            intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
            intent.putExtra(EXTRA_HDMI_PLUGGED_STATE, plugged);
            mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
        }
    }

    void initializeHdmiState() {
        final int oldMask = StrictMode.allowThreadDiskReadsMask();
        try {
            initializeHdmiStateInternal();
        } finally {
            StrictMode.setThreadPolicyMask(oldMask);
        }
    }

    void initializeHdmiStateInternal() {
        boolean plugged = false;
        // watch for HDMI plug messages if the hdmi switch exists
        if (new File("/sys/devices/virtual/switch/hdmi/state").exists()) {
            mHDMIObserver.startObserving("DEVPATH=/devices/virtual/switch/hdmi");

            final String filename = "/sys/class/switch/hdmi/state";
            FileReader reader = null;
            try {
                reader = new FileReader(filename);
                char[] buf = new char[15];
                int n = reader.read(buf);
                if (n > 1) {
                    plugged = 0 != Integer.parseInt(new String(buf, 0, n-1));
                }
            } catch (IOException ex) {
                Slog.w(TAG, "Couldn't read hdmi state from " + filename + ": " + ex);
            } catch (NumberFormatException ex) {
                Slog.w(TAG, "Couldn't read hdmi state from " + filename + ": " + ex);
            } finally {
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (IOException ex) {
                    }
                }
            }
        }
        // This dance forces the code in setHdmiPlugged to run.
        // Always do this so the sticky intent is stuck (to false) if there is no hdmi.
        mHdmiPlugged = !plugged;
        setHdmiPlugged(!mHdmiPlugged);
    }


    /** {@inheritDoc} */
    @Override
    public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) {
        if (!mSystemBooted) {
            // If we have not yet booted, don't let key events do anything.
            return 0;
        }

        final boolean interactive = (policyFlags & FLAG_INTERACTIVE) != 0;
        final boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
        final boolean canceled = event.isCanceled();
        final int keyCode = event.getKeyCode();

        final boolean isInjected = (policyFlags & WindowManagerPolicy.FLAG_INJECTED) != 0;

        // If screen is off then we treat the case where the keyguard is open but hidden
        // the same as if it were open and in front.
        // This will prevent any keys other than the power button from waking the screen
        // when the keyguard is hidden by another activity.
        final boolean keyguardActive = (mKeyguardDelegate == null ? false :
                                            (interactive ?
                                                isKeyguardShowingAndNotOccluded() :
                                                mKeyguardDelegate.isShowing()));

        if (DEBUG_INPUT) {
            Log.d(TAG, "interceptKeyTq keycode=" + keyCode
                    + " interactive=" + interactive + " keyguardActive=" + keyguardActive
                    + " policyFlags=" + Integer.toHexString(policyFlags));
        }

        // Basic policy based on interactive state.
        int result;
        boolean isWakeKey = (policyFlags & WindowManagerPolicy.FLAG_WAKE) != 0
                || event.isWakeKey();
        if (interactive || (isInjected && !isWakeKey)) {
            // When the device is interactive or the key is injected pass the
            // key to the application.
            result = ACTION_PASS_TO_USER;
            isWakeKey = false;

            if (interactive) {
                // If the screen is awake, but the button pressed was the one that woke the device
                // then don't pass it to the application
                if (keyCode == mPendingWakeKey && !down) {
                    result = 0;
                }
                // Reset the pending key
                mPendingWakeKey = PENDING_KEY_NULL;
            }
        } else if (!interactive && shouldDispatchInputWhenNonInteractive(event)) {
            // If we're currently dozing with the screen on and the keyguard showing, pass the key
            // to the application but preserve its wake key status to make sure we still move
            // from dozing to fully interactive if we would normally go from off to fully
            // interactive.
            result = ACTION_PASS_TO_USER;
            // Since we're dispatching the input, reset the pending key
            mPendingWakeKey = PENDING_KEY_NULL;
        } else {
            // When the screen is off and the key is not injected, determine whether
            // to wake the device but don't pass the key to the application.
            result = 0;
            if (isWakeKey && (!down || !isWakeKeyWhenScreenOff(keyCode))) {
                isWakeKey = false;
            }
            // Cache the wake key on down event so we can also avoid sending the up event to the app
            if (isWakeKey && down) {
                mPendingWakeKey = keyCode;
            }
        }

        // If the key would be handled globally, just return the result, don't worry about special
        // key processing.
        if (isValidGlobalKey(keyCode)
                && mGlobalKeyManager.shouldHandleGlobalKey(keyCode, event)) {
            if (isWakeKey) {
                wakeUp(event.getEventTime(), mAllowTheaterModeWakeFromKey, "android.policy:KEY");
            }
            return result;
        }

        // Enable haptics if down and virtual key without multiple repetitions. If this is a hard
        // virtual key such as a navigation bar button, only vibrate if flag is enabled.
        final boolean isNavBarVirtKey = ((event.getFlags() & KeyEvent.FLAG_VIRTUAL_HARD_KEY) != 0);
        boolean useHapticFeedback = down
                && (policyFlags & WindowManagerPolicy.FLAG_VIRTUAL) != 0
                && (!isNavBarVirtKey || mNavBarVirtualKeyHapticFeedbackEnabled)
                && event.getRepeatCount() == 0;

        // Handle special keys.
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK: {
                if (down) {
                    interceptBackKeyDown();
                } else {
                    boolean handled = interceptBackKeyUp(event);

                    // Don't pass back press to app if we've already handled it via long press
                    if (handled) {
                        result &= ~ACTION_PASS_TO_USER;
                    }
                }
                break;
            }

            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_MUTE: {
                if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
                    if (down) {
                        // Any activity on the vol down button stops the ringer toggle shortcut
                        cancelPendingRingerToggleChordAction();

                        if (interactive && !mScreenshotChordVolumeDownKeyTriggered
                                && (event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
                            mScreenshotChordVolumeDownKeyTriggered = true;
                            mScreenshotChordVolumeDownKeyTime = event.getDownTime();
                            mScreenshotChordVolumeDownKeyConsumed = false;
                            cancelPendingPowerKeyAction();
                            interceptScreenshotChord();
                            interceptAccessibilityShortcutChord();
                        }
                    } else {
                        mScreenshotChordVolumeDownKeyTriggered = false;
                        cancelPendingScreenshotChordAction();
                        cancelPendingAccessibilityShortcutAction();
                    }
                } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
                    if (down) {
                        if (interactive && !mA11yShortcutChordVolumeUpKeyTriggered
                                && (event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
                            mA11yShortcutChordVolumeUpKeyTriggered = true;
                            mA11yShortcutChordVolumeUpKeyTime = event.getDownTime();
                            mA11yShortcutChordVolumeUpKeyConsumed = false;
                            cancelPendingPowerKeyAction();
                            cancelPendingScreenshotChordAction();
                            cancelPendingRingerToggleChordAction();

                            interceptAccessibilityShortcutChord();
                            interceptRingerToggleChord();
                        }
                    } else {
                        mA11yShortcutChordVolumeUpKeyTriggered = false;
                        cancelPendingScreenshotChordAction();
                        cancelPendingAccessibilityShortcutAction();
                        cancelPendingRingerToggleChordAction();
                    }
                }
                if (down) {
                    sendSystemKeyToStatusBarAsync(event.getKeyCode());

                    TelecomManager telecomManager = getTelecommService();
                    if (telecomManager != null) {
                        if (telecomManager.isRinging()) {
                            // If an incoming call is ringing, either VOLUME key means
                            // "silence ringer".  We handle these keys here, rather than
                            // in the InCallScreen, to make sure we'll respond to them
                            // even if the InCallScreen hasn't come to the foreground yet.
                            // Look for the DOWN event here, to agree with the "fallback"
                            // behavior in the InCallScreen.
                            Log.i(TAG, "interceptKeyBeforeQueueing:"
                                  + " VOLUME key-down while ringing: Silence ringer!");

                            // Silence the ringer.  (It's safe to call this
                            // even if the ringer has already been silenced.)
                            telecomManager.silenceRinger();

                            // And *don't* pass this key thru to the current activity
                            // (which is probably the InCallScreen.)
                            result &= ~ACTION_PASS_TO_USER;
                            break;
                        }
                    }
                    int audioMode = AudioManager.MODE_NORMAL;
                    try {
                        audioMode = getAudioService().getMode();
                    } catch (Exception e) {
                        Log.e(TAG, "Error getting AudioService in interceptKeyBeforeQueueing.", e);
                    }
                    boolean isInCall = (telecomManager != null && telecomManager.isInCall()) ||
                            audioMode == AudioManager.MODE_IN_COMMUNICATION;
                    if (isInCall && (result & ACTION_PASS_TO_USER) == 0) {
                        // If we are in call but we decided not to pass the key to
                        // the application, just pass it to the session service.
                        MediaSessionLegacyHelper.getHelper(mContext).sendVolumeKeyEvent(
                                event, AudioManager.USE_DEFAULT_STREAM_TYPE, false);
                        break;
                    }
                }
                if (mUseTvRouting || mHandleVolumeKeysInWM) {
                    // Defer special key handlings to
                    // {@link interceptKeyBeforeDispatching()}.
                    result |= ACTION_PASS_TO_USER;
                } else if ((result & ACTION_PASS_TO_USER) == 0) {
                    // If we aren't passing to the user and no one else
                    // handled it send it to the session manager to
                    // figure out.
                    MediaSessionLegacyHelper.getHelper(mContext).sendVolumeKeyEvent(
                            event, AudioManager.USE_DEFAULT_STREAM_TYPE, true);
                }
                break;
            }

            case KeyEvent.KEYCODE_ENDCALL: {
                result &= ~ACTION_PASS_TO_USER;
                if (down) {
                    TelecomManager telecomManager = getTelecommService();
                    boolean hungUp = false;
                    if (telecomManager != null) {
                        hungUp = telecomManager.endCall();
                    }
                    if (interactive && !hungUp) {
                        mEndCallKeyHandled = false;
                        mHandler.postDelayed(mEndCallLongPress,
                                ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
                    } else {
                        mEndCallKeyHandled = true;
                    }
                } else {
                    if (!mEndCallKeyHandled) {
                        mHandler.removeCallbacks(mEndCallLongPress);
                        if (!canceled) {
                            if ((mEndcallBehavior
                                    & Settings.System.END_BUTTON_BEHAVIOR_HOME) != 0) {
                                if (goHome()) {
                                    break;
                                }
                            }
                            if ((mEndcallBehavior
                                    & Settings.System.END_BUTTON_BEHAVIOR_SLEEP) != 0) {
                                goToSleep(event.getEventTime(),
                                        PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 0);
                                isWakeKey = false;
                            }
                        }
                    }
                }
                break;
            }

            case KeyEvent.KEYCODE_POWER: {
                // Any activity on the power button stops the accessibility shortcut
                cancelPendingAccessibilityShortcutAction();
                result &= ~ACTION_PASS_TO_USER;
                isWakeKey = false; // wake-up will be handled separately
                if (down) {
                    interceptPowerKeyDown(event, interactive);
                } else {
                    interceptPowerKeyUp(event, interactive, canceled);
                }
                break;
            }

            case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_DOWN:
                // fall through
            case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_UP:
                // fall through
            case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_LEFT:
                // fall through
            case KeyEvent.KEYCODE_SYSTEM_NAVIGATION_RIGHT: {
                result &= ~ACTION_PASS_TO_USER;
                interceptSystemNavigationKey(event);
                break;
            }

            case KeyEvent.KEYCODE_SLEEP: {
                result &= ~ACTION_PASS_TO_USER;
                isWakeKey = false;
                if (!mPowerManager.isInteractive()) {
                    useHapticFeedback = false; // suppress feedback if already non-interactive
                }
                if (down) {
                    sleepPress();
                } else {
                    sleepRelease(event.getEventTime());
                }
                break;
            }

            case KeyEvent.KEYCODE_SOFT_SLEEP: {
                result &= ~ACTION_PASS_TO_USER;
                isWakeKey = false;
                if (!down) {
                    mPowerManagerInternal.setUserInactiveOverrideFromWindowManager();
                }
                break;
            }

            case KeyEvent.KEYCODE_WAKEUP: {
                result &= ~ACTION_PASS_TO_USER;
                isWakeKey = true;
                break;
            }

            case KeyEvent.KEYCODE_MEDIA_PLAY:
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
            case KeyEvent.KEYCODE_HEADSETHOOK:
            case KeyEvent.KEYCODE_MUTE:
            case KeyEvent.KEYCODE_MEDIA_STOP:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
            case KeyEvent.KEYCODE_MEDIA_REWIND:
            case KeyEvent.KEYCODE_MEDIA_RECORD:
            case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD:
            case KeyEvent.KEYCODE_MEDIA_AUDIO_TRACK: {
                if (MediaSessionLegacyHelper.getHelper(mContext).isGlobalPriorityActive()) {
                    // If the global session is active pass all media keys to it
                    // instead of the active window.
                    result &= ~ACTION_PASS_TO_USER;
                }
                if ((result & ACTION_PASS_TO_USER) == 0) {
                    // Only do this if we would otherwise not pass it to the user. In that
                    // case, the PhoneWindow class will do the same thing, except it will
                    // only do it if the showing app doesn't process the key on its own.
                    // Note that we need to make a copy of the key event here because the
                    // original key event will be recycled when we return.
                    mBroadcastWakeLock.acquire();
                    Message msg = mHandler.obtainMessage(MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK,
                            new KeyEvent(event));
                    msg.setAsynchronous(true);
                    msg.sendToTarget();
                }
                break;
            }

            case KeyEvent.KEYCODE_CALL: {
                if (down) {
                    TelecomManager telecomManager = getTelecommService();
                    if (telecomManager != null) {
                        if (telecomManager.isRinging()) {
                            Log.i(TAG, "interceptKeyBeforeQueueing:"
                                  + " CALL key-down while ringing: Answer the call!");
                            telecomManager.acceptRingingCall();

                            // And *don't* pass this key thru to the current activity
                            // (which is presumably the InCallScreen.)
                            result &= ~ACTION_PASS_TO_USER;
                        }
                    }
                }
                break;
            }
            case KeyEvent.KEYCODE_ASSIST: {
                final boolean longPressed = event.getRepeatCount() > 0;
                if (down && longPressed) {
                    Message msg = mHandler.obtainMessage(MSG_LAUNCH_ASSIST_LONG_PRESS);
                    msg.setAsynchronous(true);
                    msg.sendToTarget();
                }
                if (!down && !longPressed) {
                    Message msg = mHandler.obtainMessage(MSG_LAUNCH_ASSIST, event.getDeviceId(),
                            0 /* unused */, null /* hint */);
                    msg.setAsynchronous(true);
                    msg.sendToTarget();
                }
                result &= ~ACTION_PASS_TO_USER;
                break;
            }
            case KeyEvent.KEYCODE_VOICE_ASSIST: {
                if (!down) {
                    mBroadcastWakeLock.acquire();
                    Message msg = mHandler.obtainMessage(MSG_LAUNCH_VOICE_ASSIST_WITH_WAKE_LOCK);
                    msg.setAsynchronous(true);
                    msg.sendToTarget();
                }
                result &= ~ACTION_PASS_TO_USER;
                break;
            }
            case KeyEvent.KEYCODE_WINDOW: {
                if (mShortPressOnWindowBehavior == SHORT_PRESS_WINDOW_PICTURE_IN_PICTURE) {
                    if (mPictureInPictureVisible) {
                        // Consumes the key only if picture-in-picture is visible to show
                        // picture-in-picture control menu. This gives a chance to the foreground
                        // activity to customize PIP key behavior.
                        if (!down) {
                            showPictureInPictureMenu(event);
                        }
                        result &= ~ACTION_PASS_TO_USER;
                    }
                }
                break;
            }
        }

        if (useHapticFeedback) {
            performHapticFeedbackLw(null, HapticFeedbackConstants.VIRTUAL_KEY, false);
        }

        if (isWakeKey) {
            wakeUp(event.getEventTime(), mAllowTheaterModeWakeFromKey, "android.policy:KEY");
        }

        return result;
    }

    /**
     * Handle statusbar expansion events.
     * @param event
     */
    private void interceptSystemNavigationKey(KeyEvent event) {
        if (event.getAction() == KeyEvent.ACTION_UP) {
            if (!mAccessibilityManager.isEnabled()
                    || !mAccessibilityManager.sendFingerprintGesture(event.getKeyCode())) {
                if (mSystemNavigationKeysEnabled) {
                    sendSystemKeyToStatusBarAsync(event.getKeyCode());
                }
            }
        }
    }

    /**
     * Notify the StatusBar that a system key was pressed.
     */
    private void sendSystemKeyToStatusBar(int keyCode) {
        IStatusBarService statusBar = getStatusBarService();
        if (statusBar != null) {
            try {
                statusBar.handleSystemKey(keyCode);
            } catch (RemoteException e) {
                // Oh well.
            }
        }
    }

    /**
     * Notify the StatusBar that a system key was pressed without blocking the current thread.
     */
    private void sendSystemKeyToStatusBarAsync(int keyCode) {
        Message message = mHandler.obtainMessage(MSG_SYSTEM_KEY_PRESS, keyCode, 0);
        message.setAsynchronous(true);
        mHandler.sendMessage(message);
    }

    /**
     * Notify the StatusBar that system rotation suggestion has changed.
     */
    private void sendProposedRotationChangeToStatusBarInternal(int rotation, boolean isValid) {
        StatusBarManagerInternal statusBar = getStatusBarManagerInternal();
        if (statusBar != null) {
            statusBar.onProposedRotationChanged(rotation, isValid);
        }
    }

    /**
     * Returns true if the key can have global actions attached to it.
     * We reserve all power management keys for the system since they require
     * very careful handling.
     */
    private static boolean isValidGlobalKey(int keyCode) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_POWER:
            case KeyEvent.KEYCODE_WAKEUP:
            case KeyEvent.KEYCODE_SLEEP:
                return false;
            default:
                return true;
        }
    }

    /**
     * When the screen is off we ignore some keys that might otherwise typically
     * be considered wake keys.  We filter them out here.
     *
     * {@link KeyEvent#KEYCODE_POWER} is notably absent from this list because it
     * is always considered a wake key.
     */
    private boolean isWakeKeyWhenScreenOff(int keyCode) {
        switch (keyCode) {
            // ignore volume keys unless docked
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_VOLUME_MUTE:
                return mDockMode != Intent.EXTRA_DOCK_STATE_UNDOCKED;

            // ignore media and camera keys
            case KeyEvent.KEYCODE_MUTE:
            case KeyEvent.KEYCODE_HEADSETHOOK:
            case KeyEvent.KEYCODE_MEDIA_PLAY:
            case KeyEvent.KEYCODE_MEDIA_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
            case KeyEvent.KEYCODE_MEDIA_STOP:
            case KeyEvent.KEYCODE_MEDIA_NEXT:
            case KeyEvent.KEYCODE_MEDIA_PREVIOUS:
            case KeyEvent.KEYCODE_MEDIA_REWIND:
            case KeyEvent.KEYCODE_MEDIA_RECORD:
            case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD:
            case KeyEvent.KEYCODE_MEDIA_AUDIO_TRACK:
            case KeyEvent.KEYCODE_CAMERA:
                return false;
        }
        return true;
    }


    /** {@inheritDoc} */
    @Override
    public int interceptMotionBeforeQueueingNonInteractive(long whenNanos, int policyFlags) {
        if ((policyFlags & FLAG_WAKE) != 0) {
            if (wakeUp(whenNanos / 1000000, mAllowTheaterModeWakeFromMotion,
                    "android.policy:MOTION")) {
                return 0;
            }
        }

        if (shouldDispatchInputWhenNonInteractive(null)) {
            return ACTION_PASS_TO_USER;
        }

        // If we have not passed the action up and we are in theater mode without dreaming,
        // there will be no dream to intercept the touch and wake into ambient.  The device should
        // wake up in this case.
        if (isTheaterModeEnabled() && (policyFlags & FLAG_WAKE) != 0) {
            wakeUp(whenNanos / 1000000, mAllowTheaterModeWakeFromMotionWhenNotDreaming,
                    "android.policy:MOTION");
        }

        return 0;
    }

    private boolean shouldDispatchInputWhenNonInteractive(KeyEvent event) {
        final boolean displayOff = (mDisplay == null || mDisplay.getState() == STATE_OFF);

        if (displayOff && !mHasFeatureWatch) {
            return false;
        }

        // Send events to keyguard while the screen is on and it's showing.
        if (isKeyguardShowingAndNotOccluded() && !displayOff) {
            return true;
        }

        // Watches handle BACK specially
        if (mHasFeatureWatch
                && event != null
                && (event.getKeyCode() == KeyEvent.KEYCODE_BACK
                        || event.getKeyCode() == KeyEvent.KEYCODE_STEM_PRIMARY)) {
            return false;
        }

        // Send events to a dozing dream even if the screen is off since the dream
        // is in control of the state of the screen.
        IDreamManager dreamManager = getDreamManager();

        try {
            if (dreamManager != null && dreamManager.isDreaming()) {
                return true;
            }
        } catch (RemoteException e) {
            Slog.e(TAG, "RemoteException when checking if dreaming", e);
        }

        // Otherwise, consume events since the user can't see what is being
        // interacted with.
        return false;
    }

    private void dispatchDirectAudioEvent(KeyEvent event) {
        if (event.getAction() != KeyEvent.ACTION_DOWN) {
            return;
        }
        int keyCode = event.getKeyCode();
        int flags = AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND
                | AudioManager.FLAG_FROM_KEY;
        String pkgName = mContext.getOpPackageName();
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
                try {
                    getAudioService().adjustSuggestedStreamVolume(AudioManager.ADJUST_RAISE,
                            AudioManager.USE_DEFAULT_STREAM_TYPE, flags, pkgName, TAG);
                } catch (Exception e) {
                    Log.e(TAG, "Error dispatching volume up in dispatchTvAudioEvent.", e);
                }
                break;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
                try {
                    getAudioService().adjustSuggestedStreamVolume(AudioManager.ADJUST_LOWER,
                            AudioManager.USE_DEFAULT_STREAM_TYPE, flags, pkgName, TAG);
                } catch (Exception e) {
                    Log.e(TAG, "Error dispatching volume down in dispatchTvAudioEvent.", e);
                }
                break;
            case KeyEvent.KEYCODE_VOLUME_MUTE:
                try {
                    if (event.getRepeatCount() == 0) {
                        getAudioService().adjustSuggestedStreamVolume(
                                AudioManager.ADJUST_TOGGLE_MUTE,
                                AudioManager.USE_DEFAULT_STREAM_TYPE, flags, pkgName, TAG);
                    }
                } catch (Exception e) {
                    Log.e(TAG, "Error dispatching mute in dispatchTvAudioEvent.", e);
                }
                break;
        }
    }

    void dispatchMediaKeyWithWakeLock(KeyEvent event) {
        if (DEBUG_INPUT) {
            Slog.d(TAG, "dispatchMediaKeyWithWakeLock: " + event);
        }

        if (mHavePendingMediaKeyRepeatWithWakeLock) {
            if (DEBUG_INPUT) {
                Slog.d(TAG, "dispatchMediaKeyWithWakeLock: canceled repeat");
            }

            mHandler.removeMessages(MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK);
            mHavePendingMediaKeyRepeatWithWakeLock = false;
            mBroadcastWakeLock.release(); // pending repeat was holding onto the wake lock
        }

        dispatchMediaKeyWithWakeLockToAudioService(event);

        if (event.getAction() == KeyEvent.ACTION_DOWN
                && event.getRepeatCount() == 0) {
            mHavePendingMediaKeyRepeatWithWakeLock = true;

            Message msg = mHandler.obtainMessage(
                    MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK, event);
            msg.setAsynchronous(true);
            mHandler.sendMessageDelayed(msg, ViewConfiguration.getKeyRepeatTimeout());
        } else {
            mBroadcastWakeLock.release();
        }
    }

    void dispatchMediaKeyRepeatWithWakeLock(KeyEvent event) {
        mHavePendingMediaKeyRepeatWithWakeLock = false;

        KeyEvent repeatEvent = KeyEvent.changeTimeRepeat(event,
                SystemClock.uptimeMillis(), 1, event.getFlags() | KeyEvent.FLAG_LONG_PRESS);
        if (DEBUG_INPUT) {
            Slog.d(TAG, "dispatchMediaKeyRepeatWithWakeLock: " + repeatEvent);
        }

        dispatchMediaKeyWithWakeLockToAudioService(repeatEvent);
        mBroadcastWakeLock.release();
    }

    void dispatchMediaKeyWithWakeLockToAudioService(KeyEvent event) {
        if (mActivityManagerInternal.isSystemReady()) {
            MediaSessionLegacyHelper.getHelper(mContext).sendMediaButtonEvent(event, true);
        }
    }

    void launchVoiceAssistWithWakeLock() {
        final Intent voiceIntent;
        if (!keyguardOn()) {
            voiceIntent = new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
        } else {
            IDeviceIdleController dic = IDeviceIdleController.Stub.asInterface(
                    ServiceManager.getService(Context.DEVICE_IDLE_CONTROLLER));
            if (dic != null) {
                try {
                    dic.exitIdle("voice-search");
                } catch (RemoteException e) {
                }
            }
            voiceIntent = new Intent(RecognizerIntent.ACTION_VOICE_SEARCH_HANDS_FREE);
            voiceIntent.putExtra(RecognizerIntent.EXTRA_SECURE, true);
        }
        startActivityAsUser(voiceIntent, UserHandle.CURRENT_OR_SELF);
        mBroadcastWakeLock.release();
    }

    BroadcastReceiver mDockReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (Intent.ACTION_DOCK_EVENT.equals(intent.getAction())) {
                mDockMode = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
                        Intent.EXTRA_DOCK_STATE_UNDOCKED);
            } else {
                try {
                    IUiModeManager uiModeService = IUiModeManager.Stub.asInterface(
                            ServiceManager.getService(Context.UI_MODE_SERVICE));
                    mUiMode = uiModeService.getCurrentModeType();
                } catch (RemoteException e) {
                }
            }
            updateRotation(true);
            synchronized (mLock) {
                updateOrientationListenerLp();
            }
        }
    };

    BroadcastReceiver mDreamReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (Intent.ACTION_DREAMING_STARTED.equals(intent.getAction())) {
                if (mKeyguardDelegate != null) {
                    mKeyguardDelegate.onDreamingStarted();
                }
            } else if (Intent.ACTION_DREAMING_STOPPED.equals(intent.getAction())) {
                if (mKeyguardDelegate != null) {
                    mKeyguardDelegate.onDreamingStopped();
                }
            }
        }
    };

    BroadcastReceiver mMultiuserReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) {
                // tickle the settings observer: this first ensures that we're
                // observing the relevant settings for the newly-active user,
                // and then updates our own bookkeeping based on the now-
                // current user.
                mSettingsObserver.onChange(false);

                // force a re-application of focused window sysui visibility.
                // the window may never have been shown for this user
                // e.g. the keyguard when going through the new-user setup flow
                synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
                    mLastSystemUiFlags = 0;
                    updateSystemUiVisibilityLw();
                }
            }
        }
    };

    private final Runnable mHiddenNavPanic = new Runnable() {
        @Override
        public void run() {
            synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
                if (!isUserSetupComplete()) {
                    // Swipe-up for navigation bar is disabled during setup
                    return;
                }
                mPendingPanicGestureUptime = SystemClock.uptimeMillis();
                if (!isNavBarEmpty(mLastSystemUiFlags)) {
                    mNavigationBarController.showTransient();
                }
            }
        }
    };

    private void requestTransientBars(WindowState swipeTarget) {
        synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
            if (!isUserSetupComplete()) {
                // Swipe-up for navigation bar is disabled during setup
                return;
            }
            boolean sb = mStatusBarController.checkShowTransientBarLw();
            boolean nb = mNavigationBarController.checkShowTransientBarLw()
                    && !isNavBarEmpty(mLastSystemUiFlags);
            if (sb || nb) {
                // Don't show status bar when swiping on already visible navigation bar
                if (!nb && swipeTarget == mNavigationBar) {
                    if (DEBUG) Slog.d(TAG, "Not showing transient bar, wrong swipe target");
                    return;
                }
                if (sb) mStatusBarController.showTransient();
                if (nb) mNavigationBarController.showTransient();
                mImmersiveModeConfirmation.confirmCurrentPrompt();
                updateSystemUiVisibilityLw();
            }
        }
    }

    // Called on the PowerManager's Notifier thread.
    @Override
    public void startedGoingToSleep(int why) {
        if (DEBUG_WAKEUP) Slog.i(TAG, "Started going to sleep... (why=" + why + ")");

        mGoingToSleep = true;
        mRequestedOrGoingToSleep = true;

        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.onStartedGoingToSleep(why);
        }
    }

    // Called on the PowerManager's Notifier thread.
    @Override
    public void finishedGoingToSleep(int why) {
        EventLog.writeEvent(70000, 0);
        if (DEBUG_WAKEUP) Slog.i(TAG, "Finished going to sleep... (why=" + why + ")");
        MetricsLogger.histogram(mContext, "screen_timeout", mLockScreenTimeout / 1000);

        mGoingToSleep = false;
        mRequestedOrGoingToSleep = false;

        // We must get this work done here because the power manager will drop
        // the wake lock and let the system suspend once this function returns.
        synchronized (mLock) {
            mAwake = false;
            updateWakeGestureListenerLp();
            updateOrientationListenerLp();
            updateLockScreenTimeout();
        }
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.onFinishedGoingToSleep(why,
                    mCameraGestureTriggeredDuringGoingToSleep);
        }
        mCameraGestureTriggeredDuringGoingToSleep = false;
    }

    // Called on the PowerManager's Notifier thread.
    @Override
    public void startedWakingUp() {
        EventLog.writeEvent(70000, 1);
        if (DEBUG_WAKEUP) Slog.i(TAG, "Started waking up...");

        // Since goToSleep performs these functions synchronously, we must
        // do the same here.  We cannot post this work to a handler because
        // that might cause it to become reordered with respect to what
        // may happen in a future call to goToSleep.
        synchronized (mLock) {
            mAwake = true;

            updateWakeGestureListenerLp();
            updateOrientationListenerLp();
            updateLockScreenTimeout();
        }

        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.onStartedWakingUp();
        }
    }

    // Called on the PowerManager's Notifier thread.
    @Override
    public void finishedWakingUp() {
        if (DEBUG_WAKEUP) Slog.i(TAG, "Finished waking up...");

        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.onFinishedWakingUp();
        }
    }

    private void wakeUpFromPowerKey(long eventTime) {
        wakeUp(eventTime, mAllowTheaterModeWakeFromPowerKey, "android.policy:POWER");
    }

    private boolean wakeUp(long wakeTime, boolean wakeInTheaterMode, String reason) {
        final boolean theaterModeEnabled = isTheaterModeEnabled();
        if (!wakeInTheaterMode && theaterModeEnabled) {
            return false;
        }

        if (theaterModeEnabled) {
            Settings.Global.putInt(mContext.getContentResolver(),
                    Settings.Global.THEATER_MODE_ON, 0);
        }

        mPowerManager.wakeUp(wakeTime, reason);
        return true;
    }

    private void finishKeyguardDrawn() {
        synchronized (mLock) {
            if (!mScreenOnEarly || mKeyguardDrawComplete) {
                return; // We are not awake yet or we have already informed of this event.
            }

            mKeyguardDrawComplete = true;
            if (mKeyguardDelegate != null) {
                mHandler.removeMessages(MSG_KEYGUARD_DRAWN_TIMEOUT);
            }
            mWindowManagerDrawComplete = false;
        }

        // ... eventually calls finishWindowsDrawn which will finalize our screen turn on
        // as well as enabling the orientation change logic/sensor.
        mWindowManagerInternal.waitForAllWindowsDrawn(mWindowManagerDrawCallback,
                WAITING_FOR_DRAWN_TIMEOUT);
    }

    // Called on the DisplayManager's DisplayPowerController thread.
    @Override
    public void screenTurnedOff() {
        if (DEBUG_WAKEUP) Slog.i(TAG, "Screen turned off...");

        updateScreenOffSleepToken(true);
        synchronized (mLock) {
            mScreenOnEarly = false;
            mScreenOnFully = false;
            mKeyguardDrawComplete = false;
            mWindowManagerDrawComplete = false;
            mScreenOnListener = null;
            updateOrientationListenerLp();

            if (mKeyguardDelegate != null) {
                mKeyguardDelegate.onScreenTurnedOff();
            }
        }
        reportScreenStateToVrManager(false);
    }

    private long getKeyguardDrawnTimeout() {
        final boolean bootCompleted =
                LocalServices.getService(SystemServiceManager.class).isBootCompleted();
        // Set longer timeout if it has not booted yet to prevent showing empty window.
        return bootCompleted ? 1000 : 5000;
    }

    // Called on the DisplayManager's DisplayPowerController thread.
    @Override
    public void screenTurningOn(final ScreenOnListener screenOnListener) {
        if (DEBUG_WAKEUP) Slog.i(TAG, "Screen turning on...");

        updateScreenOffSleepToken(false);
        synchronized (mLock) {
            mScreenOnEarly = true;
            mScreenOnFully = false;
            mKeyguardDrawComplete = false;
            mWindowManagerDrawComplete = false;
            mScreenOnListener = screenOnListener;

            if (mKeyguardDelegate != null && mKeyguardDelegate.hasKeyguard()) {
                mHandler.removeMessages(MSG_KEYGUARD_DRAWN_TIMEOUT);
                mHandler.sendEmptyMessageDelayed(MSG_KEYGUARD_DRAWN_TIMEOUT,
                        getKeyguardDrawnTimeout());
                mKeyguardDelegate.onScreenTurningOn(mKeyguardDrawnCallback);
            } else {
                if (DEBUG_WAKEUP) Slog.d(TAG,
                        "null mKeyguardDelegate: setting mKeyguardDrawComplete.");
                finishKeyguardDrawn();
            }
        }
    }

    // Called on the DisplayManager's DisplayPowerController thread.
    @Override
    public void screenTurnedOn() {
        synchronized (mLock) {
            if (mKeyguardDelegate != null) {
                mKeyguardDelegate.onScreenTurnedOn();
            }
        }
        reportScreenStateToVrManager(true);
    }

    @Override
    public void screenTurningOff(ScreenOffListener screenOffListener) {
        mWindowManagerFuncs.screenTurningOff(screenOffListener);
        synchronized (mLock) {
            if (mKeyguardDelegate != null) {
                mKeyguardDelegate.onScreenTurningOff();
            }
        }
    }

    private void reportScreenStateToVrManager(boolean isScreenOn) {
        if (mVrManagerInternal == null) {
            return;
        }
        mVrManagerInternal.onScreenStateChanged(isScreenOn);
    }

    private void finishWindowsDrawn() {
        synchronized (mLock) {
            if (!mScreenOnEarly || mWindowManagerDrawComplete) {
                return; // Screen is not turned on or we did already handle this case earlier.
            }

            mWindowManagerDrawComplete = true;
        }

        finishScreenTurningOn();
    }

    private void finishScreenTurningOn() {
        synchronized (mLock) {
            // We have just finished drawing screen content. Since the orientation listener
            // gets only installed when all windows are drawn, we try to install it again.
            updateOrientationListenerLp();
        }
        final ScreenOnListener listener;
        final boolean enableScreen;
        synchronized (mLock) {
            if (DEBUG_WAKEUP) Slog.d(TAG,
                    "finishScreenTurningOn: mAwake=" + mAwake
                            + ", mScreenOnEarly=" + mScreenOnEarly
                            + ", mScreenOnFully=" + mScreenOnFully
                            + ", mKeyguardDrawComplete=" + mKeyguardDrawComplete
                            + ", mWindowManagerDrawComplete=" + mWindowManagerDrawComplete);

            if (mScreenOnFully || !mScreenOnEarly || !mWindowManagerDrawComplete
                    || (mAwake && !mKeyguardDrawComplete)) {
                return; // spurious or not ready yet
            }

            if (DEBUG_WAKEUP) Slog.i(TAG, "Finished screen turning on...");
            listener = mScreenOnListener;
            mScreenOnListener = null;
            mScreenOnFully = true;

            // Remember the first time we draw the keyguard so we know when we're done with
            // the main part of booting and can enable the screen and hide boot messages.
            if (!mKeyguardDrawnOnce && mAwake) {
                mKeyguardDrawnOnce = true;
                enableScreen = true;
                if (mBootMessageNeedsHiding) {
                    mBootMessageNeedsHiding = false;
                    hideBootMessages();
                }
            } else {
                enableScreen = false;
            }
        }

        if (listener != null) {
            listener.onScreenOn();
        }

        if (enableScreen) {
            try {
                mWindowManager.enableScreenIfNeeded();
            } catch (RemoteException unhandled) {
            }
        }
    }

    private void handleHideBootMessage() {
        synchronized (mLock) {
            if (!mKeyguardDrawnOnce) {
                mBootMessageNeedsHiding = true;
                return; // keyguard hasn't drawn the first time yet, not done booting
            }
        }

        if (mBootMsgDialog != null) {
            if (DEBUG_WAKEUP) Slog.d(TAG, "handleHideBootMessage: dismissing");
            mBootMsgDialog.dismiss();
            mBootMsgDialog = null;
        }
    }

    @Override
    public boolean isScreenOn() {
        synchronized (mLock) {
            return mScreenOnEarly;
        }
    }

    @Override
    public boolean okToAnimate() {
        return mAwake && !mGoingToSleep;
    }

    /** {@inheritDoc} */
    @Override
    public void enableKeyguard(boolean enabled) {
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.setKeyguardEnabled(enabled);
        }
    }

    /** {@inheritDoc} */
    @Override
    public void exitKeyguardSecurely(OnKeyguardExitResult callback) {
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.verifyUnlock(callback);
        }
    }

    @Override
    public boolean isKeyguardShowingAndNotOccluded() {
        if (mKeyguardDelegate == null) return false;
        return mKeyguardDelegate.isShowing() && !mKeyguardOccluded;
    }

    @Override
    public boolean isKeyguardTrustedLw() {
        if (mKeyguardDelegate == null) return false;
        return mKeyguardDelegate.isTrusted();
    }

    /** {@inheritDoc} */
    @Override
    public boolean isKeyguardLocked() {
        return keyguardOn();
    }

    /** {@inheritDoc} */
    @Override
    public boolean isKeyguardSecure(int userId) {
        if (mKeyguardDelegate == null) return false;
        return mKeyguardDelegate.isSecure(userId);
    }

    /** {@inheritDoc} */
    @Override
    public boolean isKeyguardOccluded() {
        if (mKeyguardDelegate == null) return false;
        return mKeyguardOccluded;
    }

    /** {@inheritDoc} */
    @Override
    public boolean inKeyguardRestrictedKeyInputMode() {
        if (mKeyguardDelegate == null) return false;
        return mKeyguardDelegate.isInputRestricted();
    }

    @Override
    public void dismissKeyguardLw(IKeyguardDismissCallback callback, CharSequence message) {
        if (mKeyguardDelegate != null && mKeyguardDelegate.isShowing()) {
            if (DEBUG_KEYGUARD) Slog.d(TAG, "PWM.dismissKeyguardLw");

            // ask the keyguard to prompt the user to authenticate if necessary
            mKeyguardDelegate.dismiss(callback, message);
        } else if (callback != null) {
            try {
                callback.onDismissError();
            } catch (RemoteException e) {
                Slog.w(TAG, "Failed to call callback", e);
            }
        }
    }

    @Override
    public boolean isKeyguardDrawnLw() {
        synchronized (mLock) {
            return mKeyguardDrawnOnce;
        }
    }

    @Override
    public boolean isShowingDreamLw() {
        return mShowingDream;
    }

    @Override
    public void startKeyguardExitAnimation(long startTime, long fadeoutDuration) {
        if (mKeyguardDelegate != null) {
            if (DEBUG_KEYGUARD) Slog.d(TAG, "PWM.startKeyguardExitAnimation");
            mKeyguardDelegate.startKeyguardExitAnimation(startTime, fadeoutDuration);
        }
    }

    @Override
    public void getStableInsetsLw(int displayRotation, int displayWidth, int displayHeight,
            DisplayCutout displayCutout, Rect outInsets) {
        outInsets.setEmpty();

        // Navigation bar and status bar.
        getNonDecorInsetsLw(displayRotation, displayWidth, displayHeight, displayCutout, outInsets);
        outInsets.top = Math.max(outInsets.top, mStatusBarHeightForRotation[displayRotation]);
    }

    @Override
    public void getNonDecorInsetsLw(int displayRotation, int displayWidth, int displayHeight,
            DisplayCutout displayCutout, Rect outInsets) {
        outInsets.setEmpty();

        // Only navigation bar
        if (mHasNavigationBar) {
            int position = navigationBarPosition(displayWidth, displayHeight, displayRotation);
            if (position == NAV_BAR_BOTTOM) {
                outInsets.bottom = getNavigationBarHeight(displayRotation, mUiMode);
            } else if (position == NAV_BAR_RIGHT) {
                outInsets.right = getNavigationBarWidth(displayRotation, mUiMode);
            } else if (position == NAV_BAR_LEFT) {
                outInsets.left = getNavigationBarWidth(displayRotation, mUiMode);
            }
        }

        if (displayCutout != null) {
            outInsets.left += displayCutout.getSafeInsetLeft();
            outInsets.top += displayCutout.getSafeInsetTop();
            outInsets.right += displayCutout.getSafeInsetRight();
            outInsets.bottom += displayCutout.getSafeInsetBottom();
        }
    }

    @Override
    public boolean isNavBarForcedShownLw(WindowState windowState) {
        return mForceShowSystemBars;
    }

    @Override
    public int getNavBarPosition() {
        // TODO(multi-display): Support system decor on secondary displays.
        return mNavigationBarPosition;
    }

    @Override
    public boolean isDockSideAllowed(int dockSide) {

        // We do not allow all dock sides at which the navigation bar touches the docked stack.
        if (!mNavigationBarCanMove) {
            return dockSide == DOCKED_TOP || dockSide == DOCKED_LEFT || dockSide == DOCKED_RIGHT;
        } else {
            return dockSide == DOCKED_TOP || dockSide == DOCKED_LEFT;
        }
    }

    void sendCloseSystemWindows() {
        PhoneWindow.sendCloseSystemWindows(mContext, null);
    }

    void sendCloseSystemWindows(String reason) {
        PhoneWindow.sendCloseSystemWindows(mContext, reason);
    }

    @Override
    public int rotationForOrientationLw(int orientation, int lastRotation, boolean defaultDisplay) {
        if (false) {
            Slog.v(TAG, "rotationForOrientationLw(orient="
                        + orientation + ", last=" + lastRotation
                        + "); user=" + mUserRotation + " "
                        + ((mUserRotationMode == WindowManagerPolicy.USER_ROTATION_LOCKED)
                            ? "USER_ROTATION_LOCKED" : "")
                        );
        }

        if (mForceDefaultOrientation) {
            return Surface.ROTATION_0;
        }

        synchronized (mLock) {
            int sensorRotation = mOrientationListener.getProposedRotation(); // may be -1
            if (sensorRotation < 0) {
                sensorRotation = lastRotation;
            }

            final int preferredRotation;
            if (!defaultDisplay) {
                // For secondary displays we ignore things like displays sensors, docking mode and
                // rotation lock, and always prefer a default rotation.
                preferredRotation = Surface.ROTATION_0;
            } else if (mLidState == LID_OPEN && mLidOpenRotation >= 0) {
                // Ignore sensor when lid switch is open and rotation is forced.
                preferredRotation = mLidOpenRotation;
            } else if (mDockMode == Intent.EXTRA_DOCK_STATE_CAR
                    && (mCarDockEnablesAccelerometer || mCarDockRotation >= 0)) {
                // Ignore sensor when in car dock unless explicitly enabled.
                // This case can override the behavior of NOSENSOR, and can also
                // enable 180 degree rotation while docked.
                preferredRotation = mCarDockEnablesAccelerometer
                        ? sensorRotation : mCarDockRotation;
            } else if ((mDockMode == Intent.EXTRA_DOCK_STATE_DESK
                    || mDockMode == Intent.EXTRA_DOCK_STATE_LE_DESK
                    || mDockMode == Intent.EXTRA_DOCK_STATE_HE_DESK)
                    && (mDeskDockEnablesAccelerometer || mDeskDockRotation >= 0)) {
                // Ignore sensor when in desk dock unless explicitly enabled.
                // This case can override the behavior of NOSENSOR, and can also
                // enable 180 degree rotation while docked.
                preferredRotation = mDeskDockEnablesAccelerometer
                        ? sensorRotation : mDeskDockRotation;
            } else if (mHdmiPlugged && mDemoHdmiRotationLock) {
                // Ignore sensor when plugged into HDMI when demo HDMI rotation lock enabled.
                // Note that the dock orientation overrides the HDMI orientation.
                preferredRotation = mDemoHdmiRotation;
            } else if (mHdmiPlugged && mDockMode == Intent.EXTRA_DOCK_STATE_UNDOCKED
                    && mUndockedHdmiRotation >= 0) {
                // Ignore sensor when plugged into HDMI and an undocked orientation has
                // been specified in the configuration (only for legacy devices without
                // full multi-display support).
                // Note that the dock orientation overrides the HDMI orientation.
                preferredRotation = mUndockedHdmiRotation;
            } else if (mDemoRotationLock) {
                // Ignore sensor when demo rotation lock is enabled.
                // Note that the dock orientation and HDMI rotation lock override this.
                preferredRotation = mDemoRotation;
            } else if (mPersistentVrModeEnabled) {
                // While in VR, apps always prefer a portrait rotation. This does not change
                // any apps that explicitly set landscape, but does cause sensors be ignored,
                // and ignored any orientation lock that the user has set (this conditional
                // should remain above the ORIENTATION_LOCKED conditional below).
                preferredRotation = mPortraitRotation;
            } else if (orientation == ActivityInfo.SCREEN_ORIENTATION_LOCKED) {
                // Application just wants to remain locked in the last rotation.
                preferredRotation = lastRotation;
            } else if (!mSupportAutoRotation) {
                // If we don't support auto-rotation then bail out here and ignore
                // the sensor and any rotation lock settings.
                preferredRotation = -1;
            } else if ((mUserRotationMode == WindowManagerPolicy.USER_ROTATION_FREE
                            && (orientation == ActivityInfo.SCREEN_ORIENTATION_USER
                                    || orientation == ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
                                    || orientation == ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE
                                    || orientation == ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT
                                    || orientation == ActivityInfo.SCREEN_ORIENTATION_FULL_USER))
                    || orientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR
                    || orientation == ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR
                    || orientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE
                    || orientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT) {
                // Otherwise, use sensor only if requested by the application or enabled
                // by default for USER or UNSPECIFIED modes.  Does not apply to NOSENSOR.
                if (mAllowAllRotations < 0) {
                    // Can't read this during init() because the context doesn't
                    // have display metrics at that time so we cannot determine
                    // tablet vs. phone then.
                    mAllowAllRotations = mContext.getResources().getBoolean(
                            com.android.internal.R.bool.config_allowAllRotations) ? 1 : 0;
                }
                if (sensorRotation != Surface.ROTATION_180
                        || mAllowAllRotations == 1
                        || orientation == ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR
                        || orientation == ActivityInfo.SCREEN_ORIENTATION_FULL_USER) {
                    preferredRotation = sensorRotation;
                } else {
                    preferredRotation = lastRotation;
                }
            } else if (mUserRotationMode == WindowManagerPolicy.USER_ROTATION_LOCKED
                    && orientation != ActivityInfo.SCREEN_ORIENTATION_NOSENSOR) {
                // Apply rotation lock.  Does not apply to NOSENSOR.
                // The idea is that the user rotation expresses a weak preference for the direction
                // of gravity and as NOSENSOR is never affected by gravity, then neither should
                // NOSENSOR be affected by rotation lock (although it will be affected by docks).
                preferredRotation = mUserRotation;
            } else {
                // No overriding preference.
                // We will do exactly what the application asked us to do.
                preferredRotation = -1;
            }

            switch (orientation) {
                case ActivityInfo.SCREEN_ORIENTATION_PORTRAIT:
                    // Return portrait unless overridden.
                    if (isAnyPortrait(preferredRotation)) {
                        return preferredRotation;
                    }
                    return mPortraitRotation;

                case ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE:
                    // Return landscape unless overridden.
                    if (isLandscapeOrSeascape(preferredRotation)) {
                        return preferredRotation;
                    }
                    return mLandscapeRotation;

                case ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT:
                    // Return reverse portrait unless overridden.
                    if (isAnyPortrait(preferredRotation)) {
                        return preferredRotation;
                    }
                    return mUpsideDownRotation;

                case ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE:
                    // Return seascape unless overridden.
                    if (isLandscapeOrSeascape(preferredRotation)) {
                        return preferredRotation;
                    }
                    return mSeascapeRotation;

                case ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE:
                case ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE:
                    // Return either landscape rotation.
                    if (isLandscapeOrSeascape(preferredRotation)) {
                        return preferredRotation;
                    }
                    if (isLandscapeOrSeascape(lastRotation)) {
                        return lastRotation;
                    }
                    return mLandscapeRotation;

                case ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT:
                case ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT:
                    // Return either portrait rotation.
                    if (isAnyPortrait(preferredRotation)) {
                        return preferredRotation;
                    }
                    if (isAnyPortrait(lastRotation)) {
                        return lastRotation;
                    }
                    return mPortraitRotation;

                default:
                    // For USER, UNSPECIFIED, NOSENSOR, SENSOR and FULL_SENSOR,
                    // just return the preferred orientation we already calculated.
                    if (preferredRotation >= 0) {
                        return preferredRotation;
                    }
                    return Surface.ROTATION_0;
            }
        }
    }

    @Override
    public boolean rotationHasCompatibleMetricsLw(int orientation, int rotation) {
        switch (orientation) {
            case ActivityInfo.SCREEN_ORIENTATION_PORTRAIT:
            case ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT:
            case ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT:
                return isAnyPortrait(rotation);

            case ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE:
            case ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE:
            case ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE:
                return isLandscapeOrSeascape(rotation);

            default:
                return true;
        }
    }

    @Override
    public void setRotationLw(int rotation) {
        mOrientationListener.setCurrentRotation(rotation);
    }

    public boolean isRotationChoicePossible(int orientation) {
        // Rotation choice is only shown when the user is in locked mode.
        if (mUserRotationMode != WindowManagerPolicy.USER_ROTATION_LOCKED) return false;

        // We should only enable rotation choice if the rotation isn't forced by the lid, dock,
        // demo, hdmi, vr, etc mode

        // Determine if the rotation is currently forced
        if (mForceDefaultOrientation) {
            return false; // Rotation is forced to default orientation

        } else if (mLidState == LID_OPEN && mLidOpenRotation >= 0) {
            return false; // Rotation is forced mLidOpenRotation

        } else if (mDockMode == Intent.EXTRA_DOCK_STATE_CAR && !mCarDockEnablesAccelerometer) {
            return false; // Rotation forced to mCarDockRotation

        } else if ((mDockMode == Intent.EXTRA_DOCK_STATE_DESK
                || mDockMode == Intent.EXTRA_DOCK_STATE_LE_DESK
                || mDockMode == Intent.EXTRA_DOCK_STATE_HE_DESK)
                && !mDeskDockEnablesAccelerometer) {
            return false; // Rotation forced to mDeskDockRotation

        } else if (mHdmiPlugged && mDemoHdmiRotationLock) {
            return false; // Rotation forced to mDemoHdmiRotation

        } else if (mHdmiPlugged && mDockMode == Intent.EXTRA_DOCK_STATE_UNDOCKED
                && mUndockedHdmiRotation >= 0) {
            return false; // Rotation forced to mUndockedHdmiRotation

        } else if (mDemoRotationLock) {
            return false; // Rotation forced to mDemoRotation

        } else if (mPersistentVrModeEnabled) {
            return false; // Rotation forced to mPortraitRotation

        } else if (!mSupportAutoRotation) {
            return false;
        }

        // Ensure that some rotation choice is possible for the given orientation
        switch (orientation) {
            case ActivityInfo.SCREEN_ORIENTATION_FULL_USER:
            case ActivityInfo.SCREEN_ORIENTATION_USER:
            case ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED:
            case ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE:
            case ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT:
                // NOSENSOR description is ambiguous, in reality WM ignores user choice
                return true;
        }

        // Rotation is forced, should be controlled by system
        return false;
    }

    public boolean isValidRotationChoice(int orientation, final int preferredRotation) {
        // Determine if the given app orientation is compatible with the provided rotation choice
        switch (orientation) {
            case ActivityInfo.SCREEN_ORIENTATION_FULL_USER:
                // Works with any of the 4 rotations
                return preferredRotation >= 0;

            case ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT:
                // It's possible for the user pref to be set at 180 because of FULL_USER. This would
                // make switching to USER_PORTRAIT appear at 180. Provide choice to back to portrait
                // but never to go to 180.
                return preferredRotation == mPortraitRotation;

            case ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE:
                // Works landscape or seascape
                return isLandscapeOrSeascape(preferredRotation);

            case ActivityInfo.SCREEN_ORIENTATION_USER:
            case ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED:
                // Works with any rotation except upside down
                return (preferredRotation >= 0) && (preferredRotation != mUpsideDownRotation);
        }

        return false;
    }

    private boolean isLandscapeOrSeascape(int rotation) {
        return rotation == mLandscapeRotation || rotation == mSeascapeRotation;
    }

    private boolean isAnyPortrait(int rotation) {
        return rotation == mPortraitRotation || rotation == mUpsideDownRotation;
    }

    @Override
    public int getUserRotationMode() {
        return Settings.System.getIntForUser(mContext.getContentResolver(),
                Settings.System.ACCELEROMETER_ROTATION, 0, UserHandle.USER_CURRENT) != 0 ?
                        WindowManagerPolicy.USER_ROTATION_FREE :
                                WindowManagerPolicy.USER_ROTATION_LOCKED;
    }

    // User rotation: to be used when all else fails in assigning an orientation to the device
    @Override
    public void setUserRotationMode(int mode, int rot) {
        ContentResolver res = mContext.getContentResolver();

        // mUserRotationMode and mUserRotation will be assigned by the content observer
        if (mode == WindowManagerPolicy.USER_ROTATION_LOCKED) {
            Settings.System.putIntForUser(res,
                    Settings.System.USER_ROTATION,
                    rot,
                    UserHandle.USER_CURRENT);
            Settings.System.putIntForUser(res,
                    Settings.System.ACCELEROMETER_ROTATION,
                    0,
                    UserHandle.USER_CURRENT);
        } else {
            Settings.System.putIntForUser(res,
                    Settings.System.ACCELEROMETER_ROTATION,
                    1,
                    UserHandle.USER_CURRENT);
        }
    }

    @Override
    public void setSafeMode(boolean safeMode) {
        mSafeMode = safeMode;
        if (safeMode) {
            performHapticFeedbackLw(null, HapticFeedbackConstants.SAFE_MODE_ENABLED, true);
        }
    }

    static long[] getLongIntArray(Resources r, int resid) {
        return ArrayUtils.convertToLongArray(r.getIntArray(resid));
    }

    private void bindKeyguard() {
        synchronized (mLock) {
            if (mKeyguardBound) {
                return;
            }
            mKeyguardBound = true;
        }
        mKeyguardDelegate.bindService(mContext);
    }

    @Override
    public void onSystemUiStarted() {
        bindKeyguard();
    }

    /** {@inheritDoc} */
    @Override
    public void systemReady() {
        // In normal flow, systemReady is called before other system services are ready.
        // So it is better not to bind keyguard here.
        mKeyguardDelegate.onSystemReady();

        mVrManagerInternal = LocalServices.getService(VrManagerInternal.class);
        if (mVrManagerInternal != null) {
            mVrManagerInternal.addPersistentVrModeStateListener(mPersistentVrModeListener);
        }

        readCameraLensCoverState();
        updateUiMode();
        synchronized (mLock) {
            updateOrientationListenerLp();
            mSystemReady = true;
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    updateSettings();
                }
            });
            // If this happens, for whatever reason, systemReady came later than systemBooted.
            // And keyguard should be already bound from systemBooted
            if (mSystemBooted) {
                mKeyguardDelegate.onBootCompleted();
            }
        }

        mSystemGestures.systemReady();
        mImmersiveModeConfirmation.systemReady();

        mAutofillManagerInternal = LocalServices.getService(AutofillManagerInternal.class);
    }

    /** {@inheritDoc} */
    @Override
    public void systemBooted() {
        bindKeyguard();
        synchronized (mLock) {
            mSystemBooted = true;
            if (mSystemReady) {
                mKeyguardDelegate.onBootCompleted();
            }
        }
        startedWakingUp();
        screenTurningOn(null);
        screenTurnedOn();
    }

    @Override
    public boolean canDismissBootAnimation() {
        synchronized (mLock) {
            return mKeyguardDrawComplete;
        }
    }

    ProgressDialog mBootMsgDialog = null;

    /** {@inheritDoc} */
    @Override
    public void showBootMessage(final CharSequence msg, final boolean always) {
        mHandler.post(new Runnable() {
            @Override public void run() {
                if (mBootMsgDialog == null) {
                    int theme;
                    if (mContext.getPackageManager().hasSystemFeature(FEATURE_LEANBACK)) {
                        theme = com.android.internal.R.style.Theme_Leanback_Dialog_Alert;
                    } else {
                        theme = 0;
                    }

                    mBootMsgDialog = new ProgressDialog(mContext, theme) {
                        // This dialog will consume all events coming in to
                        // it, to avoid it trying to do things too early in boot.
                        @Override public boolean dispatchKeyEvent(KeyEvent event) {
                            return true;
                        }
                        @Override public boolean dispatchKeyShortcutEvent(KeyEvent event) {
                            return true;
                        }
                        @Override public boolean dispatchTouchEvent(MotionEvent ev) {
                            return true;
                        }
                        @Override public boolean dispatchTrackballEvent(MotionEvent ev) {
                            return true;
                        }
                        @Override public boolean dispatchGenericMotionEvent(MotionEvent ev) {
                            return true;
                        }
                        @Override public boolean dispatchPopulateAccessibilityEvent(
                                AccessibilityEvent event) {
                            return true;
                        }
                    };
                    if (mContext.getPackageManager().isUpgrade()) {
                        mBootMsgDialog.setTitle(R.string.android_upgrading_title);
                    } else {
                        mBootMsgDialog.setTitle(R.string.android_start_title);
                    }
                    mBootMsgDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                    mBootMsgDialog.setIndeterminate(true);
                    mBootMsgDialog.getWindow().setType(
                            WindowManager.LayoutParams.TYPE_BOOT_PROGRESS);
                    mBootMsgDialog.getWindow().addFlags(
                            WindowManager.LayoutParams.FLAG_DIM_BEHIND
                            | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
                    mBootMsgDialog.getWindow().setDimAmount(1);
                    WindowManager.LayoutParams lp = mBootMsgDialog.getWindow().getAttributes();
                    lp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_NOSENSOR;
                    mBootMsgDialog.getWindow().setAttributes(lp);
                    mBootMsgDialog.setCancelable(false);
                    mBootMsgDialog.show();
                }
                mBootMsgDialog.setMessage(msg);
            }
        });
    }

    /** {@inheritDoc} */
    @Override
    public void hideBootMessages() {
        mHandler.sendEmptyMessage(MSG_HIDE_BOOT_MESSAGE);
    }

    @Override
    public void requestUserActivityNotification() {
        if (!mNotifyUserActivity && !mHandler.hasMessages(MSG_NOTIFY_USER_ACTIVITY)) {
            mNotifyUserActivity = true;
        }
    }

    /** {@inheritDoc} */
    @Override
    public void userActivity() {
        // ***************************************
        // NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE
        // ***************************************
        // THIS IS CALLED FROM DEEP IN THE POWER MANAGER
        // WITH ITS LOCKS HELD.
        //
        // This code must be VERY careful about the locks
        // it acquires.
        // In fact, the current code acquires way too many,
        // and probably has lurking deadlocks.

        synchronized (mScreenLockTimeout) {
            if (mLockScreenTimerActive) {
                // reset the timer
                mHandler.removeCallbacks(mScreenLockTimeout);
                mHandler.postDelayed(mScreenLockTimeout, mLockScreenTimeout);
            }
        }

        if (mAwake && mNotifyUserActivity) {
            mHandler.sendEmptyMessageDelayed(MSG_NOTIFY_USER_ACTIVITY,
                    USER_ACTIVITY_NOTIFICATION_DELAY);
            mNotifyUserActivity = false;
        }
    }

    class ScreenLockTimeout implements Runnable {
        Bundle options;

        @Override
        public void run() {
            synchronized (this) {
                if (localLOGV) Log.v(TAG, "mScreenLockTimeout activating keyguard");
                if (mKeyguardDelegate != null) {
                    mKeyguardDelegate.doKeyguardTimeout(options);
                }
                mLockScreenTimerActive = false;
                options = null;
            }
        }

        public void setLockOptions(Bundle options) {
            this.options = options;
        }
    }

    ScreenLockTimeout mScreenLockTimeout = new ScreenLockTimeout();

    @Override
    public void lockNow(Bundle options) {
        mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
        mHandler.removeCallbacks(mScreenLockTimeout);
        if (options != null) {
            // In case multiple calls are made to lockNow, we don't wipe out the options
            // until the runnable actually executes.
            mScreenLockTimeout.setLockOptions(options);
        }
        mHandler.post(mScreenLockTimeout);
    }

    private void updateLockScreenTimeout() {
        synchronized (mScreenLockTimeout) {
            boolean enable = (mAllowLockscreenWhenOn && mAwake &&
                    mKeyguardDelegate != null && mKeyguardDelegate.isSecure(mCurrentUserId));
            if (mLockScreenTimerActive != enable) {
                if (enable) {
                    if (localLOGV) Log.v(TAG, "setting lockscreen timer");
                    mHandler.removeCallbacks(mScreenLockTimeout); // remove any pending requests
                    mHandler.postDelayed(mScreenLockTimeout, mLockScreenTimeout);
                } else {
                    if (localLOGV) Log.v(TAG, "clearing lockscreen timer");
                    mHandler.removeCallbacks(mScreenLockTimeout);
                }
                mLockScreenTimerActive = enable;
            }
        }
    }

    // TODO (multidisplay): Support multiple displays in WindowManagerPolicy.
    private void updateDreamingSleepToken(boolean acquire) {
        if (acquire) {
            if (mDreamingSleepToken == null) {
                mDreamingSleepToken = mActivityManagerInternal.acquireSleepToken(
                        "Dream", DEFAULT_DISPLAY);
            }
        } else {
            if (mDreamingSleepToken != null) {
                mDreamingSleepToken.release();
                mDreamingSleepToken = null;
            }
        }
    }

    // TODO (multidisplay): Support multiple displays in WindowManagerPolicy.
    private void updateScreenOffSleepToken(boolean acquire) {
        if (acquire) {
            if (mScreenOffSleepToken == null) {
                mScreenOffSleepToken = mActivityManagerInternal.acquireSleepToken(
                        "ScreenOff", DEFAULT_DISPLAY);
            }
        } else {
            if (mScreenOffSleepToken != null) {
                mScreenOffSleepToken.release();
                mScreenOffSleepToken = null;
            }
        }
    }

    /** {@inheritDoc} */
    @Override
    public void enableScreenAfterBoot() {
        readLidState();
        applyLidSwitchState();
        updateRotation(true);
    }

    private void applyLidSwitchState() {
        if (mLidState == LID_CLOSED && mLidControlsSleep) {
            goToSleep(SystemClock.uptimeMillis(), PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH,
                    PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE);
        } else if (mLidState == LID_CLOSED && mLidControlsScreenLock) {
            mWindowManagerFuncs.lockDeviceNow();
        }

        synchronized (mLock) {
            updateWakeGestureListenerLp();
        }
    }

    void updateUiMode() {
        if (mUiModeManager == null) {
            mUiModeManager = IUiModeManager.Stub.asInterface(
                    ServiceManager.getService(Context.UI_MODE_SERVICE));
        }
        try {
            mUiMode = mUiModeManager.getCurrentModeType();
        } catch (RemoteException e) {
        }
    }

    void updateRotation(boolean alwaysSendConfiguration) {
        try {
            //set orientation on WindowManager
            mWindowManager.updateRotation(alwaysSendConfiguration, false);
        } catch (RemoteException e) {
            // Ignore
        }
    }

    void updateRotation(boolean alwaysSendConfiguration, boolean forceRelayout) {
        try {
            //set orientation on WindowManager
            mWindowManager.updateRotation(alwaysSendConfiguration, forceRelayout);
        } catch (RemoteException e) {
            // Ignore
        }
    }

    /**
     * Return an Intent to launch the currently active dock app as home.  Returns
     * null if the standard home should be launched, which is the case if any of the following is
     * true:
     * <ul>
     *  <li>The device is not in either car mode or desk mode
     *  <li>The device is in car mode but mEnableCarDockHomeCapture is false
     *  <li>The device is in desk mode but ENABLE_DESK_DOCK_HOME_CAPTURE is false
     *  <li>The device is in car mode but there's no CAR_DOCK app with METADATA_DOCK_HOME
     *  <li>The device is in desk mode but there's no DESK_DOCK app with METADATA_DOCK_HOME
     * </ul>
     * @return A dock intent.
     */
    Intent createHomeDockIntent() {
        Intent intent = null;

        // What home does is based on the mode, not the dock state.  That
        // is, when in car mode you should be taken to car home regardless
        // of whether we are actually in a car dock.
        if (mUiMode == Configuration.UI_MODE_TYPE_CAR) {
            if (mEnableCarDockHomeCapture) {
                intent = mCarDockIntent;
            }
        } else if (mUiMode == Configuration.UI_MODE_TYPE_DESK) {
            if (ENABLE_DESK_DOCK_HOME_CAPTURE) {
                intent = mDeskDockIntent;
            }
        } else if (mUiMode == Configuration.UI_MODE_TYPE_WATCH
                && (mDockMode == Intent.EXTRA_DOCK_STATE_DESK
                        || mDockMode == Intent.EXTRA_DOCK_STATE_HE_DESK
                        || mDockMode == Intent.EXTRA_DOCK_STATE_LE_DESK)) {
            // Always launch dock home from home when watch is docked, if it exists.
            intent = mDeskDockIntent;
        } else if (mUiMode == Configuration.UI_MODE_TYPE_VR_HEADSET) {
            if (ENABLE_VR_HEADSET_HOME_CAPTURE) {
                intent = mVrHeadsetHomeIntent;
            }
        }

        if (intent == null) {
            return null;
        }

        ActivityInfo ai = null;
        ResolveInfo info = mContext.getPackageManager().resolveActivityAsUser(
                intent,
                PackageManager.MATCH_DEFAULT_ONLY | PackageManager.GET_META_DATA,
                mCurrentUserId);
        if (info != null) {
            ai = info.activityInfo;
        }
        if (ai != null
                && ai.metaData != null
                && ai.metaData.getBoolean(Intent.METADATA_DOCK_HOME)) {
            intent = new Intent(intent);
            intent.setClassName(ai.packageName, ai.name);
            return intent;
        }

        return null;
    }

    void startDockOrHome(boolean fromHomeKey, boolean awakenFromDreams) {
        try {
            ActivityManager.getService().stopAppSwitches();
        } catch (RemoteException e) {}
        sendCloseSystemWindows(SYSTEM_DIALOG_REASON_HOME_KEY);

        if (awakenFromDreams) {
            awakenDreams();
        }

        Intent dock = createHomeDockIntent();
        if (dock != null) {
            try {
                if (fromHomeKey) {
                    dock.putExtra(WindowManagerPolicy.EXTRA_FROM_HOME_KEY, fromHomeKey);
                }
                startActivityAsUser(dock, UserHandle.CURRENT);
                return;
            } catch (ActivityNotFoundException e) {
            }
        }

        Intent intent;

        if (fromHomeKey) {
            intent = new Intent(mHomeIntent);
            intent.putExtra(WindowManagerPolicy.EXTRA_FROM_HOME_KEY, fromHomeKey);
        } else {
            intent = mHomeIntent;
        }

        startActivityAsUser(intent, UserHandle.CURRENT);
    }

    /**
     * goes to the home screen
     * @return whether it did anything
     */
    boolean goHome() {
        if (!isUserSetupComplete()) {
            Slog.i(TAG, "Not going home because user setup is in progress.");
            return false;
        }
        if (false) {
            // This code always brings home to the front.
            startDockOrHome(false /*fromHomeKey*/, true /* awakenFromDreams */);
        } else {
            // This code brings home to the front or, if it is already
            // at the front, puts the device to sleep.
            try {
                if (SystemProperties.getInt("persist.sys.uts-test-mode", 0) == 1) {
                    /// Roll back EndcallBehavior as the cupcake design to pass P1 lab entry.
                    Log.d(TAG, "UTS-TEST-MODE");
                } else {
                    ActivityManager.getService().stopAppSwitches();
                    sendCloseSystemWindows();
                    Intent dock = createHomeDockIntent();
                    if (dock != null) {
                        int result = ActivityManager.getService()
                                .startActivityAsUser(null, null, dock,
                                        dock.resolveTypeIfNeeded(mContext.getContentResolver()),
                                        null, null, 0,
                                        ActivityManager.START_FLAG_ONLY_IF_NEEDED,
                                        null, null, UserHandle.USER_CURRENT);
                        if (result == ActivityManager.START_RETURN_INTENT_TO_CALLER) {
                            return false;
                        }
                    }
                }
                int result = ActivityManager.getService()
                        .startActivityAsUser(null, null, mHomeIntent,
                                mHomeIntent.resolveTypeIfNeeded(mContext.getContentResolver()),
                                null, null, 0,
                                ActivityManager.START_FLAG_ONLY_IF_NEEDED,
                                null, null, UserHandle.USER_CURRENT);
                if (result == ActivityManager.START_RETURN_INTENT_TO_CALLER) {
                    return false;
                }
            } catch (RemoteException ex) {
                // bummer, the activity manager, which is in this process, is dead
            }
        }
        return true;
    }

    @Override
    public void setCurrentOrientationLw(int newOrientation) {
        synchronized (mLock) {
            if (newOrientation != mCurrentAppOrientation) {
                mCurrentAppOrientation = newOrientation;
                updateOrientationListenerLp();
            }
        }
    }

    private boolean isTheaterModeEnabled() {
        return Settings.Global.getInt(mContext.getContentResolver(),
                Settings.Global.THEATER_MODE_ON, 0) == 1;
    }

    @Override
    public boolean performHapticFeedbackLw(WindowState win, int effectId, boolean always) {
        if (!mVibrator.hasVibrator()) {
            return false;
        }
        final boolean hapticsDisabled = Settings.System.getIntForUser(mContext.getContentResolver(),
                Settings.System.HAPTIC_FEEDBACK_ENABLED, 0, UserHandle.USER_CURRENT) == 0;
        if (hapticsDisabled && !always) {
            return false;
        }

        VibrationEffect effect = getVibrationEffect(effectId);
        if (effect == null) {
            return false;
        }

        int owningUid;
        String owningPackage;
        if (win != null) {
            owningUid = win.getOwningUid();
            owningPackage = win.getOwningPackage();
        } else {
            owningUid = android.os.Process.myUid();
            owningPackage = mContext.getOpPackageName();
        }
        mVibrator.vibrate(owningUid, owningPackage, effect, VIBRATION_ATTRIBUTES);
        return true;
    }

    private VibrationEffect getVibrationEffect(int effectId) {
        long[] pattern;
        switch (effectId) {
            case HapticFeedbackConstants.CLOCK_TICK:
            case HapticFeedbackConstants.CONTEXT_CLICK:
                return VibrationEffect.get(VibrationEffect.EFFECT_TICK);
            case HapticFeedbackConstants.KEYBOARD_RELEASE:
            case HapticFeedbackConstants.TEXT_HANDLE_MOVE:
            case HapticFeedbackConstants.VIRTUAL_KEY_RELEASE:
            case HapticFeedbackConstants.ENTRY_BUMP:
            case HapticFeedbackConstants.DRAG_CROSSING:
            case HapticFeedbackConstants.GESTURE_END:
                return VibrationEffect.get(VibrationEffect.EFFECT_TICK, false);
            case HapticFeedbackConstants.KEYBOARD_TAP: // == KEYBOARD_PRESS
            case HapticFeedbackConstants.VIRTUAL_KEY:
            case HapticFeedbackConstants.EDGE_RELEASE:
            case HapticFeedbackConstants.CONFIRM:
            case HapticFeedbackConstants.GESTURE_START:
                return VibrationEffect.get(VibrationEffect.EFFECT_CLICK);
            case HapticFeedbackConstants.LONG_PRESS:
            case HapticFeedbackConstants.EDGE_SQUEEZE:
                return VibrationEffect.get(VibrationEffect.EFFECT_HEAVY_CLICK);
            case HapticFeedbackConstants.REJECT:
                return VibrationEffect.get(VibrationEffect.EFFECT_DOUBLE_CLICK);

            case HapticFeedbackConstants.CALENDAR_DATE:
                pattern = mCalendarDateVibePattern;
                break;
            case HapticFeedbackConstants.SAFE_MODE_ENABLED:
                pattern = mSafeModeEnabledVibePattern;
                break;

            default:
                return null;
        }
        if (pattern.length == 0) {
            // No vibration
            return null;
        } else if (pattern.length == 1) {
            // One-shot vibration
            return VibrationEffect.createOneShot(pattern[0], VibrationEffect.DEFAULT_AMPLITUDE);
        } else {
            // Pattern vibration
            return VibrationEffect.createWaveform(pattern, -1);
        }
    }

    @Override
    public void keepScreenOnStartedLw() {
    }

    @Override
    public void keepScreenOnStoppedLw() {
        if (isKeyguardShowingAndNotOccluded()) {
            mPowerManager.userActivity(SystemClock.uptimeMillis(), false);
        }
    }

    private int updateSystemUiVisibilityLw() {
        // If there is no window focused, there will be nobody to handle the events
        // anyway, so just hang on in whatever state we're in until things settle down.
        WindowState winCandidate = mFocusedWindow != null ? mFocusedWindow
                : mTopFullscreenOpaqueWindowState;
        if (winCandidate == null) {
            return 0;
        }
        if (winCandidate.getAttrs().token == mImmersiveModeConfirmation.getWindowToken()) {
            // The immersive mode confirmation should never affect the system bar visibility,
            // otherwise it will unhide the navigation bar and hide itself.
            winCandidate = isStatusBarKeyguard() ? mStatusBar : mTopFullscreenOpaqueWindowState;
            if (winCandidate == null) {
                return 0;
            }
        }
        final WindowState win = winCandidate;
        if ((win.getAttrs().privateFlags & PRIVATE_FLAG_KEYGUARD) != 0 && mKeyguardOccluded) {
            // We are updating at a point where the keyguard has gotten
            // focus, but we were last in a state where the top window is
            // hiding it.  This is probably because the keyguard as been
            // shown while the top window was displayed, so we want to ignore
            // it here because this is just a very transient change and it
            // will quickly lose focus once it correctly gets hidden.
            return 0;
        }

        int tmpVisibility = PolicyControl.getSystemUiVisibility(win, null)
                & ~mResettingSystemUiFlags
                & ~mForceClearedSystemUiFlags;
        if (mForcingShowNavBar && win.getSurfaceLayer() < mForcingShowNavBarLayer) {
            tmpVisibility &= ~PolicyControl.adjustClearableFlags(win, View.SYSTEM_UI_CLEARABLE_FLAGS);
        }

        final int fullscreenVisibility = updateLightStatusBarLw(0 /* vis */,
                mTopFullscreenOpaqueWindowState, mTopFullscreenOpaqueOrDimmingWindowState);
        final int dockedVisibility = updateLightStatusBarLw(0 /* vis */,
                mTopDockedOpaqueWindowState, mTopDockedOpaqueOrDimmingWindowState);
        mWindowManagerFuncs.getStackBounds(
                WINDOWING_MODE_UNDEFINED, ACTIVITY_TYPE_HOME, mNonDockedStackBounds);
        mWindowManagerFuncs.getStackBounds(
                WINDOWING_MODE_SPLIT_SCREEN_PRIMARY, ACTIVITY_TYPE_STANDARD, mDockedStackBounds);
        final int visibility = updateSystemBarsLw(win, mLastSystemUiFlags, tmpVisibility);
        final int diff = visibility ^ mLastSystemUiFlags;
        final int fullscreenDiff = fullscreenVisibility ^ mLastFullscreenStackSysUiFlags;
        final int dockedDiff = dockedVisibility ^ mLastDockedStackSysUiFlags;
        final boolean needsMenu = win.getNeedsMenuLw(mTopFullscreenOpaqueWindowState);
        if (diff == 0 && fullscreenDiff == 0 && dockedDiff == 0 && mLastFocusNeedsMenu == needsMenu
                && mFocusedApp == win.getAppToken()
                && mLastNonDockedStackBounds.equals(mNonDockedStackBounds)
                && mLastDockedStackBounds.equals(mDockedStackBounds)) {
            return 0;
        }
        mLastSystemUiFlags = visibility;
        mLastFullscreenStackSysUiFlags = fullscreenVisibility;
        mLastDockedStackSysUiFlags = dockedVisibility;
        mLastFocusNeedsMenu = needsMenu;
        mFocusedApp = win.getAppToken();
        final Rect fullscreenStackBounds = new Rect(mNonDockedStackBounds);
        final Rect dockedStackBounds = new Rect(mDockedStackBounds);
        mHandler.post(new Runnable() {
                @Override
                public void run() {
                    StatusBarManagerInternal statusbar = getStatusBarManagerInternal();
                    if (statusbar != null) {
                        statusbar.setSystemUiVisibility(visibility, fullscreenVisibility,
                                dockedVisibility, 0xffffffff, fullscreenStackBounds,
                                dockedStackBounds, win.toString());
                        statusbar.topAppWindowChanged(needsMenu);
                    }
                }
            });
        return diff;
    }

    private int updateLightStatusBarLw(int vis, WindowState opaque, WindowState opaqueOrDimming) {
        final boolean onKeyguard = isStatusBarKeyguard() && !mKeyguardOccluded;
        final WindowState statusColorWin = onKeyguard ? mStatusBar : opaqueOrDimming;
        if (statusColorWin != null && (statusColorWin == opaque || onKeyguard)) {
            // If the top fullscreen-or-dimming window is also the top fullscreen, respect
            // its light flag.
            vis &= ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
            vis |= PolicyControl.getSystemUiVisibility(statusColorWin, null)
                    & View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
        } else if (statusColorWin != null && statusColorWin.isDimming()) {
            // Otherwise if it's dimming, clear the light flag.
            vis &= ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
        }
        return vis;
    }

    @VisibleForTesting
    @Nullable
    static WindowState chooseNavigationColorWindowLw(WindowState opaque,
            WindowState opaqueOrDimming, WindowState imeWindow,
            @NavigationBarPosition int navBarPosition) {
        // If the IME window is visible and FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS is set, then IME
        // window can be navigation color window.
        final boolean imeWindowCanNavColorWindow = imeWindow != null
                && imeWindow.isVisibleLw()
                && navBarPosition == NAV_BAR_BOTTOM
                && (PolicyControl.getWindowFlags(imeWindow, null)
                & WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0;

        if (opaque != null && opaqueOrDimming == opaque) {
            // If the top fullscreen-or-dimming window is also the top fullscreen, respect it
            // unless IME window is also eligible, since currently the IME window is always show
            // above the opaque fullscreen app window, regardless of the IME target window.
            // TODO(b/31559891): Maybe we need to revisit this condition once b/31559891 is fixed.
            return imeWindowCanNavColorWindow ? imeWindow : opaque;
        }

        if (opaqueOrDimming == null || !opaqueOrDimming.isDimming()) {
            // No dimming window is involved. Determine the result only with the IME window.
            return imeWindowCanNavColorWindow ? imeWindow : null;
        }

        if (!imeWindowCanNavColorWindow) {
            // No IME window is involved. Determine the result only with opaqueOrDimming.
            return opaqueOrDimming;
        }

        // The IME window and the dimming window are competing.  Check if the dimming window can be
        // IME target or not.
        if (LayoutParams.mayUseInputMethod(PolicyControl.getWindowFlags(opaqueOrDimming, null))) {
            // The IME window is above the dimming window.
            return imeWindow;
        } else {
            // The dimming window is above the IME window.
            return opaqueOrDimming;
        }
    }

    @VisibleForTesting
    static int updateLightNavigationBarLw(int vis, WindowState opaque, WindowState opaqueOrDimming,
            WindowState imeWindow, WindowState navColorWin) {

        if (navColorWin != null) {
            if (navColorWin == imeWindow || navColorWin == opaque) {
                // Respect the light flag.
                vis &= ~View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
                vis |= PolicyControl.getSystemUiVisibility(navColorWin, null)
                        & View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
            } else if (navColorWin == opaqueOrDimming && navColorWin.isDimming()) {
                // Clear the light flag for dimming window.
                vis &= ~View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
            }
        }
        return vis;
    }

    private int updateSystemBarsLw(WindowState win, int oldVis, int vis) {
        final boolean dockedStackVisible =
                mWindowManagerInternal.isStackVisible(WINDOWING_MODE_SPLIT_SCREEN_PRIMARY);
        final boolean freeformStackVisible =
                mWindowManagerInternal.isStackVisible(WINDOWING_MODE_FREEFORM);
        final boolean resizing = mWindowManagerInternal.isDockedDividerResizing();

        // We need to force system bars when the docked stack is visible, when the freeform stack
        // is visible but also when we are resizing for the transitions when docked stack
        // visibility changes.
        mForceShowSystemBars = dockedStackVisible || freeformStackVisible || resizing;
        final boolean forceOpaqueStatusBar = mForceShowSystemBars && !mForceStatusBarFromKeyguard;

        // apply translucent bar vis flags
        WindowState fullscreenTransWin = isStatusBarKeyguard() && !mKeyguardOccluded
                ? mStatusBar
                : mTopFullscreenOpaqueWindowState;
        vis = mStatusBarController.applyTranslucentFlagLw(fullscreenTransWin, vis, oldVis);
        vis = mNavigationBarController.applyTranslucentFlagLw(fullscreenTransWin, vis, oldVis);
        final int dockedVis = mStatusBarController.applyTranslucentFlagLw(
                mTopDockedOpaqueWindowState, 0, 0);

        final boolean fullscreenDrawsStatusBarBackground =
                drawsStatusBarBackground(vis, mTopFullscreenOpaqueWindowState);
        final boolean dockedDrawsStatusBarBackground =
                drawsStatusBarBackground(dockedVis, mTopDockedOpaqueWindowState);

        // prevent status bar interaction from clearing certain flags
        int type = win.getAttrs().type;
        boolean statusBarHasFocus = type == TYPE_STATUS_BAR;
        if (statusBarHasFocus && !isStatusBarKeyguard()) {
            int flags = View.SYSTEM_UI_FLAG_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_IMMERSIVE
                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                    | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
            if (mKeyguardOccluded) {
                flags |= View.STATUS_BAR_TRANSLUCENT | View.NAVIGATION_BAR_TRANSLUCENT;
            }
            vis = (vis & ~flags) | (oldVis & flags);
        }

        if (fullscreenDrawsStatusBarBackground && dockedDrawsStatusBarBackground) {
            vis |= View.STATUS_BAR_TRANSPARENT;
            vis &= ~View.STATUS_BAR_TRANSLUCENT;
        } else if ((!areTranslucentBarsAllowed() && fullscreenTransWin != mStatusBar)
                || forceOpaqueStatusBar) {
            vis &= ~(View.STATUS_BAR_TRANSLUCENT | View.STATUS_BAR_TRANSPARENT);
        }

        vis = configureNavBarOpacity(vis, dockedStackVisible, freeformStackVisible, resizing);

        // update status bar
        boolean immersiveSticky =
                (vis & View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) != 0;
        final boolean hideStatusBarWM =
                mTopFullscreenOpaqueWindowState != null
                && (PolicyControl.getWindowFlags(mTopFullscreenOpaqueWindowState, null)
                        & WindowManager.LayoutParams.FLAG_FULLSCREEN) != 0;
        final boolean hideStatusBarSysui =
                (vis & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;
        final boolean hideNavBarSysui =
                (vis & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) != 0;

        final boolean transientStatusBarAllowed = mStatusBar != null
                && (statusBarHasFocus || (!mForceShowSystemBars
                        && (hideStatusBarWM || (hideStatusBarSysui && immersiveSticky))));

        final boolean transientNavBarAllowed = mNavigationBar != null
                && !mForceShowSystemBars && hideNavBarSysui && immersiveSticky;

        final long now = SystemClock.uptimeMillis();
        final boolean pendingPanic = mPendingPanicGestureUptime != 0
                && now - mPendingPanicGestureUptime <= PANIC_GESTURE_EXPIRATION;
        if (pendingPanic && hideNavBarSysui && !isStatusBarKeyguard() && mKeyguardDrawComplete) {
            // The user performed the panic gesture recently, we're about to hide the bars,
            // we're no longer on the Keyguard and the screen is ready. We can now request the bars.
            mPendingPanicGestureUptime = 0;
            mStatusBarController.showTransient();
            if (!isNavBarEmpty(vis)) {
                mNavigationBarController.showTransient();
            }
        }

        final boolean denyTransientStatus = mStatusBarController.isTransientShowRequested()
                && !transientStatusBarAllowed && hideStatusBarSysui;
        final boolean denyTransientNav = mNavigationBarController.isTransientShowRequested()
                && !transientNavBarAllowed;
        if (denyTransientStatus || denyTransientNav || mForceShowSystemBars) {
            // clear the clearable flags instead
            clearClearableFlagsLw();
            vis &= ~View.SYSTEM_UI_CLEARABLE_FLAGS;
        }

        final boolean immersive = (vis & View.SYSTEM_UI_FLAG_IMMERSIVE) != 0;
        immersiveSticky = (vis & View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) != 0;
        final boolean navAllowedHidden = immersive || immersiveSticky;

        if (hideNavBarSysui && !navAllowedHidden
                && getWindowLayerLw(win) > getWindowLayerFromTypeLw(TYPE_INPUT_CONSUMER)) {
            // We can't hide the navbar from this window otherwise the input consumer would not get
            // the input events.
            vis = (vis & ~View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
        }

        vis = mStatusBarController.updateVisibilityLw(transientStatusBarAllowed, oldVis, vis);

        // update navigation bar
        boolean oldImmersiveMode = isImmersiveMode(oldVis);
        boolean newImmersiveMode = isImmersiveMode(vis);
        if (win != null && oldImmersiveMode != newImmersiveMode) {
            final String pkg = win.getOwningPackage();
            mImmersiveModeConfirmation.immersiveModeChangedLw(pkg, newImmersiveMode,
                    isUserSetupComplete(), isNavBarEmpty(win.getSystemUiVisibility()));
        }

        vis = mNavigationBarController.updateVisibilityLw(transientNavBarAllowed, oldVis, vis);

        final WindowState navColorWin = chooseNavigationColorWindowLw(
                mTopFullscreenOpaqueWindowState, mTopFullscreenOpaqueOrDimmingWindowState,
                mWindowManagerFuncs.getInputMethodWindowLw(), mNavigationBarPosition);
        vis = updateLightNavigationBarLw(vis, mTopFullscreenOpaqueWindowState,
                mTopFullscreenOpaqueOrDimmingWindowState,
                mWindowManagerFuncs.getInputMethodWindowLw(), navColorWin);

        return vis;
    }

    private boolean drawsStatusBarBackground(int vis, WindowState win) {
        if (!mStatusBarController.isTransparentAllowed(win)) {
            return false;
        }
        if (win == null) {
            return true;
        }

        final boolean drawsSystemBars =
                (win.getAttrs().flags & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0;
        final boolean forceDrawsSystemBars =
                (win.getAttrs().privateFlags & PRIVATE_FLAG_FORCE_DRAW_STATUS_BAR_BACKGROUND) != 0;

        return forceDrawsSystemBars || drawsSystemBars && (vis & View.STATUS_BAR_TRANSLUCENT) == 0;
    }

    /**
     * @return the current visibility flags with the nav-bar opacity related flags toggled based
     *         on the nav bar opacity rules chosen by {@link #mNavBarOpacityMode}.
     */
    private int configureNavBarOpacity(int visibility, boolean dockedStackVisible,
            boolean freeformStackVisible, boolean isDockedDividerResizing) {
        if (mScreenMagnificationActive) {
            // When the screen is magnified, the nav bar should be opaque since its background
            // can vary as the user pans and zooms
            visibility = setNavBarOpaqueFlag(visibility);
        } else if (mNavBarOpacityMode == NAV_BAR_OPAQUE_WHEN_FREEFORM_OR_DOCKED) {
            if (dockedStackVisible || freeformStackVisible || isDockedDividerResizing) {
                visibility = setNavBarOpaqueFlag(visibility);
            }
        } else if (mNavBarOpacityMode == NAV_BAR_TRANSLUCENT_WHEN_FREEFORM_OPAQUE_OTHERWISE) {
            if (isDockedDividerResizing) {
                visibility = setNavBarOpaqueFlag(visibility);
            } else if (freeformStackVisible) {
                visibility = setNavBarTranslucentFlag(visibility);
            } else {
                visibility = setNavBarOpaqueFlag(visibility);
            }
        }

        if (!areTranslucentBarsAllowed()) {
            visibility &= ~View.NAVIGATION_BAR_TRANSLUCENT;
        }
        return visibility;
    }

    private int setNavBarOpaqueFlag(int visibility) {
        return visibility &= ~(View.NAVIGATION_BAR_TRANSLUCENT | View.NAVIGATION_BAR_TRANSPARENT);
    }

    private int setNavBarTranslucentFlag(int visibility) {
        visibility &= ~View.NAVIGATION_BAR_TRANSPARENT;
        return visibility |= View.NAVIGATION_BAR_TRANSLUCENT;
    }

    private void clearClearableFlagsLw() {
        int newVal = mResettingSystemUiFlags | View.SYSTEM_UI_CLEARABLE_FLAGS;
        if (newVal != mResettingSystemUiFlags) {
            mResettingSystemUiFlags = newVal;
            mWindowManagerFuncs.reevaluateStatusBarVisibility();
        }
    }

    private boolean isImmersiveMode(int vis) {
        final int flags = View.SYSTEM_UI_FLAG_IMMERSIVE | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
        return mNavigationBar != null
                && (vis & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) != 0
                && (vis & flags) != 0
                && canHideNavigationBar();
    }

    private static boolean isNavBarEmpty(int systemUiFlags) {
        final int disableNavigationBar = (View.STATUS_BAR_DISABLE_HOME
                | View.STATUS_BAR_DISABLE_BACK
                | View.STATUS_BAR_DISABLE_RECENT);

        return (systemUiFlags & disableNavigationBar) == disableNavigationBar;
    }

    /**
     * @return whether the navigation or status bar can be made translucent
     *
     * This should return true unless touch exploration is not enabled or
     * R.boolean.config_enableTranslucentDecor is false.
     */
    private boolean areTranslucentBarsAllowed() {
        return mTranslucentDecorEnabled;
    }

    // Use this instead of checking config_showNavigationBar so that it can be consistently
    // overridden by qemu.hw.mainkeys in the emulator.
    @Override
    public boolean hasNavigationBar() {
        return mHasNavigationBar;
    }

    @Override
    public void setLastInputMethodWindowLw(WindowState ime, WindowState target) {
        mLastInputMethodWindow = ime;
        mLastInputMethodTargetWindow = target;
    }

    @Override
    public void setDismissImeOnBackKeyPressed(boolean newValue) {
        mDismissImeOnBackKeyPressed = newValue;
    }

    @Override
    public void setCurrentUserLw(int newUserId) {
        mCurrentUserId = newUserId;
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.setCurrentUser(newUserId);
        }
        if (mAccessibilityShortcutController != null) {
            mAccessibilityShortcutController.setCurrentUser(newUserId);
        }
        StatusBarManagerInternal statusBar = getStatusBarManagerInternal();
        if (statusBar != null) {
            statusBar.setCurrentUser(newUserId);
        }
        setLastInputMethodWindowLw(null, null);
    }

    @Override
    public void setSwitchingUser(boolean switching) {
        mKeyguardDelegate.setSwitchingUser(switching);
    }

    @Override
    public boolean isTopLevelWindow(int windowType) {
        if (windowType >= WindowManager.LayoutParams.FIRST_SUB_WINDOW
                && windowType <= WindowManager.LayoutParams.LAST_SUB_WINDOW) {
            return (windowType == WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG);
        }
        return true;
    }

    @Override
    public boolean shouldRotateSeamlessly(int oldRotation, int newRotation) {
        // For the upside down rotation we don't rotate seamlessly as the navigation
        // bar moves position.
        // Note most apps (using orientation:sensor or user as opposed to fullSensor)
        // will not enter the reverse portrait orientation, so actually the
        // orientation won't change at all.
        if (oldRotation == mUpsideDownRotation || newRotation == mUpsideDownRotation) {
            return false;
        }
        // If the navigation bar can't change sides, then it will
        // jump when we change orientations and we don't rotate
        // seamlessly.
        if (!mNavigationBarCanMove) {
            return false;
        }
        int delta = newRotation - oldRotation;
        if (delta < 0) delta += 4;
        // Likewise we don't rotate seamlessly for 180 degree rotations
        // in this case the surfaces never resize, and our logic to
        // revert the transformations on size change will fail. We could
        // fix this in the future with the "tagged" frames idea.
        if (delta == Surface.ROTATION_180) {
            return false;
        }

        final WindowState w = mTopFullscreenOpaqueWindowState;
        if (w != mFocusedWindow) {
            return false;
        }

        // We only enable seamless rotation if the top window has requested
        // it and is in the fullscreen opaque state. Seamless rotation
        // requires freezing various Surface states and won't work well
        // with animations, so we disable it in the animation case for now.
        if (w != null && !w.isAnimatingLw() &&
                ((w.getAttrs().rotationAnimation == ROTATION_ANIMATION_JUMPCUT) ||
                        (w.getAttrs().rotationAnimation == ROTATION_ANIMATION_SEAMLESS))) {
            return true;
        }
        return false;
    }

    @Override
    public void onScreenMagnificationStateChanged(boolean active) {
        synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
            mScreenMagnificationActive = active;
            updateSystemUiVisibilityLw();
        }
    }

    @Override
    public void writeToProto(ProtoOutputStream proto, long fieldId) {
        final long token = proto.start(fieldId);
        proto.write(LAST_SYSTEM_UI_FLAGS, mLastSystemUiFlags);
        proto.write(ROTATION_MODE, mUserRotationMode);
        proto.write(ROTATION, mUserRotation);
        proto.write(ORIENTATION, mCurrentAppOrientation);
        proto.write(SCREEN_ON_FULLY, mScreenOnFully);
        proto.write(KEYGUARD_DRAW_COMPLETE, mKeyguardDrawComplete);
        proto.write(WINDOW_MANAGER_DRAW_COMPLETE, mWindowManagerDrawComplete);
        if (mFocusedApp != null) {
            proto.write(FOCUSED_APP_TOKEN, mFocusedApp.toString());
        }
        if (mFocusedWindow != null) {
            mFocusedWindow.writeIdentifierToProto(proto, FOCUSED_WINDOW);
        }
        if (mTopFullscreenOpaqueWindowState != null) {
            mTopFullscreenOpaqueWindowState.writeIdentifierToProto(
                    proto, TOP_FULLSCREEN_OPAQUE_WINDOW);
        }
        if (mTopFullscreenOpaqueOrDimmingWindowState != null) {
            mTopFullscreenOpaqueOrDimmingWindowState.writeIdentifierToProto(
                    proto, TOP_FULLSCREEN_OPAQUE_OR_DIMMING_WINDOW);
        }
        proto.write(KEYGUARD_OCCLUDED, mKeyguardOccluded);
        proto.write(KEYGUARD_OCCLUDED_CHANGED, mKeyguardOccludedChanged);
        proto.write(KEYGUARD_OCCLUDED_PENDING, mPendingKeyguardOccluded);
        proto.write(FORCE_STATUS_BAR, mForceStatusBar);
        proto.write(FORCE_STATUS_BAR_FROM_KEYGUARD, mForceStatusBarFromKeyguard);
        mStatusBarController.writeToProto(proto, STATUS_BAR);
        mNavigationBarController.writeToProto(proto, NAVIGATION_BAR);
        if (mOrientationListener != null) {
            mOrientationListener.writeToProto(proto, ORIENTATION_LISTENER);
        }
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.writeToProto(proto, KEYGUARD_DELEGATE);
        }
        proto.end(token);
    }

    @Override
    public void dump(String prefix, PrintWriter pw, String[] args) {
        pw.print(prefix); pw.print("mSafeMode="); pw.print(mSafeMode);
                pw.print(" mSystemReady="); pw.print(mSystemReady);
                pw.print(" mSystemBooted="); pw.println(mSystemBooted);
        pw.print(prefix); pw.print("mLidState=");
                pw.print(WindowManagerFuncs.lidStateToString(mLidState));
                pw.print(" mLidOpenRotation=");
                pw.println(Surface.rotationToString(mLidOpenRotation));
        pw.print(prefix); pw.print("mCameraLensCoverState=");
                pw.print(WindowManagerFuncs.cameraLensStateToString(mCameraLensCoverState));
                pw.print(" mHdmiPlugged="); pw.println(mHdmiPlugged);
        if (mLastSystemUiFlags != 0 || mResettingSystemUiFlags != 0
                || mForceClearedSystemUiFlags != 0) {
            pw.print(prefix); pw.print("mLastSystemUiFlags=0x");
                    pw.print(Integer.toHexString(mLastSystemUiFlags));
                    pw.print(" mResettingSystemUiFlags=0x");
                    pw.print(Integer.toHexString(mResettingSystemUiFlags));
                    pw.print(" mForceClearedSystemUiFlags=0x");
                    pw.println(Integer.toHexString(mForceClearedSystemUiFlags));
        }
        if (mLastFocusNeedsMenu) {
            pw.print(prefix); pw.print("mLastFocusNeedsMenu=");
                    pw.println(mLastFocusNeedsMenu);
        }
        pw.print(prefix); pw.print("mWakeGestureEnabledSetting=");
                pw.println(mWakeGestureEnabledSetting);

        pw.print(prefix);
                pw.print("mSupportAutoRotation="); pw.print(mSupportAutoRotation);
                pw.print(" mOrientationSensorEnabled="); pw.println(mOrientationSensorEnabled);
        pw.print(prefix); pw.print("mUiMode="); pw.print(Configuration.uiModeToString(mUiMode));
                pw.print(" mDockMode="); pw.println(Intent.dockStateToString(mDockMode));
        pw.print(prefix); pw.print("mEnableCarDockHomeCapture=");
                pw.print(mEnableCarDockHomeCapture);
                pw.print(" mCarDockRotation=");
                pw.print(Surface.rotationToString(mCarDockRotation));
                pw.print(" mDeskDockRotation=");
                pw.println(Surface.rotationToString(mDeskDockRotation));
        pw.print(prefix); pw.print("mUserRotationMode=");
                pw.print(WindowManagerPolicy.userRotationModeToString(mUserRotationMode));
                pw.print(" mUserRotation="); pw.print(Surface.rotationToString(mUserRotation));
                pw.print(" mAllowAllRotations=");
                pw.println(allowAllRotationsToString(mAllowAllRotations));
        pw.print(prefix); pw.print("mCurrentAppOrientation=");
                pw.println(ActivityInfo.screenOrientationToString(mCurrentAppOrientation));
        pw.print(prefix); pw.print("mCarDockEnablesAccelerometer=");
                pw.print(mCarDockEnablesAccelerometer);
                pw.print(" mDeskDockEnablesAccelerometer=");
                pw.println(mDeskDockEnablesAccelerometer);
        pw.print(prefix); pw.print("mLidKeyboardAccessibility=");
                pw.print(mLidKeyboardAccessibility);
                pw.print(" mLidNavigationAccessibility="); pw.print(mLidNavigationAccessibility);
                pw.print(" mLidControlsScreenLock="); pw.println(mLidControlsScreenLock);
        pw.print(prefix); pw.print("mLidControlsSleep="); pw.println(mLidControlsSleep);
        pw.print(prefix);
                pw.print("mLongPressOnBackBehavior=");
                pw.println(longPressOnBackBehaviorToString(mLongPressOnBackBehavior));
        pw.print(prefix);
                pw.print("mLongPressOnHomeBehavior=");
                pw.println(longPressOnHomeBehaviorToString(mLongPressOnHomeBehavior));
        pw.print(prefix);
                pw.print("mDoubleTapOnHomeBehavior=");
                pw.println(doubleTapOnHomeBehaviorToString(mDoubleTapOnHomeBehavior));
        pw.print(prefix);
                pw.print("mShortPressOnPowerBehavior=");
                pw.println(shortPressOnPowerBehaviorToString(mShortPressOnPowerBehavior));
        pw.print(prefix);
                pw.print("mLongPressOnPowerBehavior=");
                pw.println(longPressOnPowerBehaviorToString(mLongPressOnPowerBehavior));
        pw.print(prefix);
                pw.print("mVeryLongPressOnPowerBehavior=");
                pw.println(veryLongPressOnPowerBehaviorToString(mVeryLongPressOnPowerBehavior));
        pw.print(prefix);
                pw.print("mDoublePressOnPowerBehavior=");
                pw.println(multiPressOnPowerBehaviorToString(mDoublePressOnPowerBehavior));
        pw.print(prefix);
                pw.print("mTriplePressOnPowerBehavior=");
                pw.println(multiPressOnPowerBehaviorToString(mTriplePressOnPowerBehavior));
        pw.print(prefix);
                pw.print("mShortPressOnSleepBehavior=");
                pw.println(shortPressOnSleepBehaviorToString(mShortPressOnSleepBehavior));
        pw.print(prefix);
                pw.print("mShortPressOnWindowBehavior=");
                pw.println(shortPressOnWindowBehaviorToString(mShortPressOnWindowBehavior));
        pw.print(prefix);
                pw.print("mAllowStartActivityForLongPressOnPowerDuringSetup=");
                pw.println(mAllowStartActivityForLongPressOnPowerDuringSetup);
        pw.print(prefix);
                pw.print("mHasSoftInput="); pw.print(mHasSoftInput);
                pw.print(" mDismissImeOnBackKeyPressed="); pw.println(mDismissImeOnBackKeyPressed);
        pw.print(prefix);
                pw.print("mIncallPowerBehavior=");
                pw.print(incallPowerBehaviorToString(mIncallPowerBehavior));
                pw.print(" mIncallBackBehavior=");
                pw.print(incallBackBehaviorToString(mIncallBackBehavior));
                pw.print(" mEndcallBehavior=");
                pw.println(endcallBehaviorToString(mEndcallBehavior));
        pw.print(prefix); pw.print("mHomePressed="); pw.println(mHomePressed);
        pw.print(prefix);
                pw.print("mAwake="); pw.print(mAwake);
                pw.print("mScreenOnEarly="); pw.print(mScreenOnEarly);
                pw.print(" mScreenOnFully="); pw.println(mScreenOnFully);
        pw.print(prefix); pw.print("mKeyguardDrawComplete="); pw.print(mKeyguardDrawComplete);
                pw.print(" mWindowManagerDrawComplete="); pw.println(mWindowManagerDrawComplete);
        pw.print(prefix); pw.print("mDockLayer="); pw.print(mDockLayer);
                pw.print(" mStatusBarLayer="); pw.println(mStatusBarLayer);
        pw.print(prefix); pw.print("mShowingDream="); pw.print(mShowingDream);
                pw.print(" mDreamingLockscreen="); pw.print(mDreamingLockscreen);
                pw.print(" mDreamingSleepToken="); pw.println(mDreamingSleepToken);
        if (mLastInputMethodWindow != null) {
            pw.print(prefix); pw.print("mLastInputMethodWindow=");
                    pw.println(mLastInputMethodWindow);
        }
        if (mLastInputMethodTargetWindow != null) {
            pw.print(prefix); pw.print("mLastInputMethodTargetWindow=");
                    pw.println(mLastInputMethodTargetWindow);
        }
        if (mStatusBar != null) {
            pw.print(prefix); pw.print("mStatusBar=");
                    pw.print(mStatusBar); pw.print(" isStatusBarKeyguard=");
                    pw.println(isStatusBarKeyguard());
        }
        if (mNavigationBar != null) {
            pw.print(prefix); pw.print("mNavigationBar=");
                    pw.println(mNavigationBar);
        }
        if (mFocusedWindow != null) {
            pw.print(prefix); pw.print("mFocusedWindow=");
                    pw.println(mFocusedWindow);
        }
        if (mFocusedApp != null) {
            pw.print(prefix); pw.print("mFocusedApp=");
                    pw.println(mFocusedApp);
        }
        if (mTopFullscreenOpaqueWindowState != null) {
            pw.print(prefix); pw.print("mTopFullscreenOpaqueWindowState=");
                    pw.println(mTopFullscreenOpaqueWindowState);
        }
        if (mTopFullscreenOpaqueOrDimmingWindowState != null) {
            pw.print(prefix); pw.print("mTopFullscreenOpaqueOrDimmingWindowState=");
                    pw.println(mTopFullscreenOpaqueOrDimmingWindowState);
        }
        if (mForcingShowNavBar) {
            pw.print(prefix); pw.print("mForcingShowNavBar=");
                    pw.println(mForcingShowNavBar); pw.print( "mForcingShowNavBarLayer=");
                    pw.println(mForcingShowNavBarLayer);
        }
        pw.print(prefix); pw.print("mTopIsFullscreen="); pw.print(mTopIsFullscreen);
                pw.print(" mKeyguardOccluded="); pw.println(mKeyguardOccluded);
        pw.print(prefix);
                pw.print("mKeyguardOccludedChanged="); pw.print(mKeyguardOccludedChanged);
                pw.print(" mPendingKeyguardOccluded="); pw.println(mPendingKeyguardOccluded);
        pw.print(prefix); pw.print("mForceStatusBar="); pw.print(mForceStatusBar);
                pw.print(" mForceStatusBarFromKeyguard=");
                pw.println(mForceStatusBarFromKeyguard);
        pw.print(prefix); pw.print("mAllowLockscreenWhenOn="); pw.print(mAllowLockscreenWhenOn);
                pw.print(" mLockScreenTimeout="); pw.print(mLockScreenTimeout);
                pw.print(" mLockScreenTimerActive="); pw.println(mLockScreenTimerActive);
        pw.print(prefix); pw.print("mLandscapeRotation=");
                pw.print(Surface.rotationToString(mLandscapeRotation));
                pw.print(" mSeascapeRotation=");
                pw.println(Surface.rotationToString(mSeascapeRotation));
        pw.print(prefix); pw.print("mPortraitRotation=");
                pw.print(Surface.rotationToString(mPortraitRotation));
                pw.print(" mUpsideDownRotation=");
                pw.println(Surface.rotationToString(mUpsideDownRotation));
        pw.print(prefix); pw.print("mDemoHdmiRotation=");
                pw.print(Surface.rotationToString(mDemoHdmiRotation));
                pw.print(" mDemoHdmiRotationLock="); pw.println(mDemoHdmiRotationLock);
        pw.print(prefix); pw.print("mUndockedHdmiRotation=");
                pw.println(Surface.rotationToString(mUndockedHdmiRotation));
        if (mHasFeatureLeanback) {
            pw.print(prefix);
            pw.print("mAccessibilityTvKey1Pressed="); pw.println(mAccessibilityTvKey1Pressed);
            pw.print(prefix);
            pw.print("mAccessibilityTvKey2Pressed="); pw.println(mAccessibilityTvKey2Pressed);
            pw.print(prefix);
            pw.print("mAccessibilityTvScheduled="); pw.println(mAccessibilityTvScheduled);
        }

        mGlobalKeyManager.dump(prefix, pw);
        mStatusBarController.dump(pw, prefix);
        mNavigationBarController.dump(pw, prefix);
        PolicyControl.dump(prefix, pw);

        if (mWakeGestureListener != null) {
            mWakeGestureListener.dump(pw, prefix);
        }
        if (mOrientationListener != null) {
            mOrientationListener.dump(pw, prefix);
        }
        if (mBurnInProtectionHelper != null) {
            mBurnInProtectionHelper.dump(prefix, pw);
        }
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.dump(prefix, pw);
        }

        pw.print(prefix); pw.println("Looper state:");
        mHandler.getLooper().dump(new PrintWriterPrinter(pw), prefix + "  ");
    }

    private static String allowAllRotationsToString(int allowAll) {
        switch (allowAll) {
            case -1:
                return "unknown";
            case 0:
                return "false";
            case 1:
                return "true";
            default:
                return Integer.toString(allowAll);
        }
    }

    private static String endcallBehaviorToString(int behavior) {
        StringBuilder sb = new StringBuilder();
        if ((behavior & Settings.System.END_BUTTON_BEHAVIOR_HOME) != 0 ) {
            sb.append("home|");
        }
        if ((behavior & Settings.System.END_BUTTON_BEHAVIOR_SLEEP) != 0) {
            sb.append("sleep|");
        }

        final int N = sb.length();
        if (N == 0) {
            return "<nothing>";
        } else {
            // Chop off the trailing '|'
            return sb.substring(0, N - 1);
        }
    }

    private static String incallPowerBehaviorToString(int behavior) {
        if ((behavior & Settings.Secure.INCALL_POWER_BUTTON_BEHAVIOR_HANGUP) != 0) {
            return "hangup";
        } else {
            return "sleep";
        }
    }

    private static String incallBackBehaviorToString(int behavior) {
        if ((behavior & Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR_HANGUP) != 0) {
            return "hangup";
        } else {
            return "<nothing>";
        }
    }

    private static String longPressOnBackBehaviorToString(int behavior) {
        switch (behavior) {
            case LONG_PRESS_BACK_NOTHING:
                return "LONG_PRESS_BACK_NOTHING";
            case LONG_PRESS_BACK_GO_TO_VOICE_ASSIST:
                return "LONG_PRESS_BACK_GO_TO_VOICE_ASSIST";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String longPressOnHomeBehaviorToString(int behavior) {
        switch (behavior) {
            case LONG_PRESS_HOME_NOTHING:
                return "LONG_PRESS_HOME_NOTHING";
            case LONG_PRESS_HOME_ALL_APPS:
                return "LONG_PRESS_HOME_ALL_APPS";
            case LONG_PRESS_HOME_ASSIST:
                return "LONG_PRESS_HOME_ASSIST";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String doubleTapOnHomeBehaviorToString(int behavior) {
        switch (behavior) {
            case DOUBLE_TAP_HOME_NOTHING:
                return "DOUBLE_TAP_HOME_NOTHING";
            case DOUBLE_TAP_HOME_RECENT_SYSTEM_UI:
                return "DOUBLE_TAP_HOME_RECENT_SYSTEM_UI";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String shortPressOnPowerBehaviorToString(int behavior) {
        switch (behavior) {
            case SHORT_PRESS_POWER_NOTHING:
                return "SHORT_PRESS_POWER_NOTHING";
            case SHORT_PRESS_POWER_GO_TO_SLEEP:
                return "SHORT_PRESS_POWER_GO_TO_SLEEP";
            case SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP:
                return "SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP";
            case SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP_AND_GO_HOME:
                return "SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP_AND_GO_HOME";
            case SHORT_PRESS_POWER_GO_HOME:
                return "SHORT_PRESS_POWER_GO_HOME";
            case SHORT_PRESS_POWER_CLOSE_IME_OR_GO_HOME:
                return "SHORT_PRESS_POWER_CLOSE_IME_OR_GO_HOME";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String longPressOnPowerBehaviorToString(int behavior) {
        switch (behavior) {
            case LONG_PRESS_POWER_NOTHING:
                return "LONG_PRESS_POWER_NOTHING";
            case LONG_PRESS_POWER_GLOBAL_ACTIONS:
                return "LONG_PRESS_POWER_GLOBAL_ACTIONS";
            case LONG_PRESS_POWER_SHUT_OFF:
                return "LONG_PRESS_POWER_SHUT_OFF";
            case LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM:
                return "LONG_PRESS_POWER_SHUT_OFF_NO_CONFIRM";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String veryLongPressOnPowerBehaviorToString(int behavior) {
        switch (behavior) {
            case VERY_LONG_PRESS_POWER_NOTHING:
                return "VERY_LONG_PRESS_POWER_NOTHING";
            case VERY_LONG_PRESS_POWER_GLOBAL_ACTIONS:
                return "VERY_LONG_PRESS_POWER_GLOBAL_ACTIONS";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String multiPressOnPowerBehaviorToString(int behavior) {
        switch (behavior) {
            case MULTI_PRESS_POWER_NOTHING:
                return "MULTI_PRESS_POWER_NOTHING";
            case MULTI_PRESS_POWER_THEATER_MODE:
                return "MULTI_PRESS_POWER_THEATER_MODE";
            case MULTI_PRESS_POWER_BRIGHTNESS_BOOST:
                return "MULTI_PRESS_POWER_BRIGHTNESS_BOOST";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String shortPressOnSleepBehaviorToString(int behavior) {
        switch (behavior) {
            case SHORT_PRESS_SLEEP_GO_TO_SLEEP:
                return "SHORT_PRESS_SLEEP_GO_TO_SLEEP";
            case SHORT_PRESS_SLEEP_GO_TO_SLEEP_AND_GO_HOME:
                return "SHORT_PRESS_SLEEP_GO_TO_SLEEP_AND_GO_HOME";
            default:
                return Integer.toString(behavior);
        }
    }

    private static String shortPressOnWindowBehaviorToString(int behavior) {
        switch (behavior) {
            case SHORT_PRESS_WINDOW_NOTHING:
                return "SHORT_PRESS_WINDOW_NOTHING";
            case SHORT_PRESS_WINDOW_PICTURE_IN_PICTURE:
                return "SHORT_PRESS_WINDOW_PICTURE_IN_PICTURE";
            default:
                return Integer.toString(behavior);
        }
    }

    @Override
    public void onLockTaskStateChangedLw(int lockTaskState) {
        mImmersiveModeConfirmation.onLockTaskModeChangedLw(lockTaskState);
    }
}