server/policy/PhoneWindowManager.java

/*
 * 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 android.app.ActivityManager;
import android.app.ActivityManagerInternal;
import android.app.ActivityManagerInternal.SleepToken;
import android.app.ActivityManagerNative;
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.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.ActivityInfo;
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.hardware.hdmi.HdmiControlManager;
import android.hardware.hdmi.HdmiPlaybackClient;
import android.hardware.hdmi.HdmiPlaybackClient.OneTouchPlayCallback;
import android.media.AudioAttributes;
import android.media.AudioManager;
import android.media.AudioSystem;
import android.media.IAudioService;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.media.session.MediaSessionLegacyHelper;
import android.os.Bundle;
import android.os.Debug;
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.Messenger;
import android.os.PowerManager;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UEventObserver;
import android.os.UserHandle;
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.speech.RecognizerIntent;
import android.telecom.TelecomManager;
import android.util.DisplayMetrics;
import android.util.EventLog;
import android.util.Log;
import android.util.Slog;
import android.util.SparseArray;
import android.view.Display;
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 com.android.internal.policy.PhoneWindow;
import android.view.Surface;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.Window;
import android.view.WindowManager;
import android.view.WindowManagerGlobal;
import android.view.WindowManagerInternal;
import android.view.WindowManagerPolicy;
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 com.android.internal.R;
import com.android.internal.statusbar.IStatusBarService;
import com.android.internal.util.ScreenShapeHelper;
import com.android.internal.widget.PointerLocationView;
import com.android.server.LocalServices;
import com.android.server.policy.keyguard.KeyguardServiceDelegate;
import com.android.server.policy.keyguard.KeyguardServiceDelegate.ShowListener;

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

import static android.view.WindowManager.LayoutParams.*;
import static android.view.WindowManagerPolicy.WindowManagerFuncs.LID_ABSENT;
import static android.view.WindowManagerPolicy.WindowManagerFuncs.LID_OPEN;
import static android.view.WindowManagerPolicy.WindowManagerFuncs.LID_CLOSED;
import static android.view.WindowManagerPolicy.WindowManagerFuncs.CAMERA_LENS_COVER_ABSENT;
import static android.view.WindowManagerPolicy.WindowManagerFuncs.CAMERA_LENS_UNCOVERED;
import static android.view.WindowManagerPolicy.WindowManagerFuncs.CAMERA_LENS_COVERED;

/**
 * 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_STARTING_WINDOW = false;
    static final boolean DEBUG_WAKEUP = false;
    static final boolean SHOW_STARTING_ANIMATIONS = true;
    static final boolean SHOW_PROCESSES_ON_ALT_MENU = false;

    // Whether to allow dock apps with METADATA_DOCK_HOME to temporarily take over the Home key.
    // No longer recommended for desk docks; still useful in car docks.
    static final boolean ENABLE_CAR_DOCK_HOME_CAPTURE = true;
    static final boolean ENABLE_DESK_DOCK_HOME_CAPTURE = 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 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 MULTI_PRESS_POWER_NOTHING = 0;
    static final int MULTI_PRESS_POWER_THEATER_MODE = 1;
    static final int MULTI_PRESS_POWER_BRIGHTNESS_BOOST = 2;

    // 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_RECENT_SYSTEM_UI = 1;
    static final int LONG_PRESS_HOME_ASSIST = 2;

    static final int DOUBLE_TAP_HOME_NOTHING = 0;
    static final int DOUBLE_TAP_HOME_RECENT_SYSTEM_UI = 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 APPLICATION_MEDIA_SUBLAYER = -2;
    static final int APPLICATION_MEDIA_OVERLAY_SUBLAYER = -1;
    static final int APPLICATION_PANEL_SUBLAYER = 1;
    static final int APPLICATION_SUB_PANEL_SUBLAYER = 2;
    static final int APPLICATION_ABOVE_SUB_PANEL_SUBLAYER = 3;

    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";

    /**
     * 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.SYSTEM_UI_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;

    /**
     * Keyguard stuff
     */
    private WindowState mKeyguardScrim;
    private boolean mKeyguardHidden;
    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);
    }

    /** Amount of time (in milliseconds) to wait for windows drawn before powering on. */
    static final int WAITING_FOR_DRAWN_TIMEOUT = 500;

    /**
     * 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;
    DreamManagerInternal mDreamManagerInternal;
    IStatusBarService mStatusBarService;
    boolean mPreloadedRecentApps;
    final Object mServiceAquireLock = new Object();
    Vibrator mVibrator; // Vibrator for giving feedback of orientation changes
    SearchManager mSearchManager;
    AccessibilityManager mAccessibilityManager;
    BurnInProtectionHelper mBurnInProtectionHelper;

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

    // Vibrator pattern for haptic feedback of virtual key press.
    long[] mVirtualKeyVibePattern;

    // Vibrator pattern for a short vibration.
    long[] mKeyboardTapVibePattern;

    // Vibrator pattern for a short vibration when tapping on an hour/minute tick of a Clock.
    long[] mClockTickVibePattern;

    // 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 disabled.
    long[] mSafeModeDisabledVibePattern;

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

    // Vibrator pattern for haptic feedback of a context click.
    long[] mContextClickVibePattern;

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

    boolean mSafeMode;
    WindowState mStatusBar = null;
    int mStatusBarHeight;
    WindowState mNavigationBar = null;
    boolean mHasNavigationBar = false;
    boolean mCanHideNavigationBar = false;
    boolean mNavigationBarCanMove = false; // can the navigation bar ever move to the side?
    boolean mNavigationBarOnBottom = true; // is the navigation bar on the bottom *right now*?
    int[] mNavigationBarHeightForRotation = new int[4];
    int[] mNavigationBarWidthForRotation = new int[4];

    boolean mBootMessageNeedsHiding;
    KeyguardServiceDelegate mKeyguardDelegate;
    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 ShowListener mKeyguardDelegateCallback = new ShowListener() {
        @Override
        public void onShown(IBinder windowToken) {
            if (DEBUG_WAKEUP) Slog.d(TAG, "mKeyguardDelegate.ShowListener.onShown.");
            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 mBeganFromNonInteractive;
    volatile int mPowerKeyPressCounter;
    volatile boolean mEndCallKeyHandled;

    boolean mRecentsVisible;
    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 mAccelerometerDefault;

    boolean mSupportAutoRotation;
    int mAllowAllRotations = -1;
    boolean mCarDockEnablesAccelerometer;
    boolean mDeskDockEnablesAccelerometer;
    int mLidKeyboardAccessibility;
    int mLidNavigationAccessibility;
    boolean mLidControlsSleep;
    int mShortPressOnPowerBehavior;
    int mLongPressOnPowerBehavior;
    int mDoublePressOnPowerBehavior;
    int mTriplePressOnPowerBehavior;
    int mShortPressOnSleepBehavior;
    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 mPointerLocationMode = 0; // guarded by mLock

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

    PointerLocationView mPointerLocationView;

    // The current size of the screen; really; extends into the overscan area of
    // the screen and doesn't account for any system elements like the status bar.
    int mOverscanScreenLeft, mOverscanScreenTop;
    int mOverscanScreenWidth, mOverscanScreenHeight;
    // The current visible size of the screen; really; (ir)regardless of whether the status
    // bar can be hidden but not extending into the overscan area.
    int mUnrestrictedScreenLeft, mUnrestrictedScreenTop;
    int mUnrestrictedScreenWidth, mUnrestrictedScreenHeight;
    // Like mOverscanScreen*, but allowed to move into the overscan region where appropriate.
    int mRestrictedOverscanScreenLeft, mRestrictedOverscanScreenTop;
    int mRestrictedOverscanScreenWidth, mRestrictedOverscanScreenHeight;
    // The current size of the screen; these may be different than (0,0)-(dw,dh)
    // if the status bar can't be hidden; in that case it effectively carves out
    // that area of the display from all other windows.
    int mRestrictedScreenLeft, mRestrictedScreenTop;
    int mRestrictedScreenWidth, mRestrictedScreenHeight;
    // During layout, the current screen borders accounting for any currently
    // visible system UI elements.
    int mSystemLeft, mSystemTop, mSystemRight, mSystemBottom;
    // For applications requesting stable content insets, these are them.
    int mStableLeft, mStableTop, mStableRight, mStableBottom;
    // For applications requesting stable content insets but have also set the
    // fullscreen window flag, these are the stable dimensions without the status bar.
    int mStableFullscreenLeft, mStableFullscreenTop;
    int mStableFullscreenRight, mStableFullscreenBottom;
    // During layout, the current screen borders with all outer decoration
    // (status bar, input method dock) accounted for.
    int mCurLeft, mCurTop, mCurRight, mCurBottom;
    // During layout, the frame in which content should be displayed
    // to the user, accounting for all screen decoration except for any
    // space they deem as available for other content.  This is usually
    // the same as mCur*, but may be larger if the screen decor has supplied
    // content insets.
    int mContentLeft, mContentTop, mContentRight, mContentBottom;
    // During layout, the frame in which voice content should be displayed
    // to the user, accounting for all screen decoration except for any
    // space they deem as available for other content.
    int mVoiceContentLeft, mVoiceContentTop, mVoiceContentRight, mVoiceContentBottom;
    // During layout, the current screen borders along which input method
    // windows are placed.
    int mDockLeft, mDockTop, mDockRight, mDockBottom;
    // 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;
    // 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();

    WindowState mTopFullscreenOpaqueWindowState;
    WindowState mTopFullscreenOpaqueOrDimmingWindowState;
    HashSet<IApplicationToken> mAppsToBeHidden = new HashSet<IApplicationToken>();
    HashSet<IApplicationToken> mAppsThatDismissKeyguard = new HashSet<IApplicationToken>();
    boolean mTopIsFullscreen;
    boolean mForceStatusBar;
    boolean mForceStatusBarFromKeyguard;
    private boolean mForceStatusBarTransparent;
    boolean mHideLockScreen;
    boolean mForcingShowNavBar;
    int mForcingShowNavBarLayer;

    // States of keyguard dismiss.
    private static final int DISMISS_KEYGUARD_NONE = 0; // Keyguard not being dismissed.
    private static final int DISMISS_KEYGUARD_START = 1; // Keyguard needs to be dismissed.
    private static final int DISMISS_KEYGUARD_CONTINUE = 2; // Keyguard has been dismissed.
    int mDismissKeyguard = DISMISS_KEYGUARD_NONE;

    /** The window that is currently dismissing the keyguard. Dismissing the keyguard must only
     * be done once per window. */
    private WindowState mWinDismissingKeyguard;

    /** When window is currently dismissing the keyguard, dismissing the keyguard must handle
     * the keygaurd secure state change instantly case, e.g. the use case of inserting a PIN
     * lock SIM card. This variable is used to record the previous keyguard secure state for
     * monitoring secure state change on window dismissing keyguard. */
    private boolean mSecureDismissingKeyguard;

    /** The window that is currently showing "over" the keyguard. If there is an app window
     * belonging to another app on top of this the keyguard shows. If there is a fullscreen
     * app window under this, still dismiss the keyguard but don't show the app underneath. Show
     * the wallpaper. */
    private WindowState mWinShowWhenLocked;

    boolean mShowingLockscreen;
    boolean mShowingDream;
    boolean mDreamingLockscreen;
    boolean mDreamingSleepTokenNeeded;
    SleepToken mDreamingSleepToken;
    SleepToken mScreenOffSleepToken;
    boolean mKeyguardSecure;
    boolean mKeyguardSecureIncludingHidden;
    volatile boolean mKeyguardOccluded;
    boolean mHomePressed;
    boolean mHomeConsumed;
    boolean mHomeDoubleTapPending;
    Intent mHomeIntent;
    Intent mCarDockIntent;
    Intent mDeskDockIntent;
    boolean mSearchKeyShortcutPending;
    boolean mConsumeSearchKeyUp;
    boolean mAssistKeyLongPressed;
    boolean mPendingMetaAction;

    // 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;

    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

    int mOverscanLeft = 0;
    int mOverscanTop = 0;
    int mOverscanRight = 0;
    int mOverscanBottom = 0;

    // 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 mScreenshotChordVolumeUpKeyTriggered;
    private boolean mScreenshotChordPowerKeyTriggered;
    private long mScreenshotChordPowerKeyTime;

    /* 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;

    // 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 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 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_VOICE_ASSIST_WITH_WAKE_LOCK:
                    launchVoiceAssistWithWakeLock(msg.arg1 != 0);
                    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_UPDATE_DREAMING_SLEEP_TOKEN:
                    updateDreamingSleepToken(msg.arg1 != 0);
                    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.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.Global.getUriFor(
                    Settings.Global.POLICY_CONTROL), 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);
                }
            }
        }
    }

    class MyOrientationListener extends WindowOrientationListener {
        MyOrientationListener(Context context, Handler handler) {
            super(context, handler);
        }

        @Override
        public void onProposedRotationChanged(int rotation) {
            if (localLOGV) Slog.v(TAG, "onProposedRotationChanged, rotation=" + rotation);
            updateRotation(false);
        }
    }
    MyOrientationListener mOrientationListener;

    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,
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);

    private ImmersiveModeConfirmation mImmersiveModeConfirmation;

    private SystemGesturesPointerEventListener mSystemGestures;

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

    /*
     * 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.)
            return false;
        }
        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.
        if (mScreenOnEarly && mAwake &&
                mKeyguardDrawComplete && mWindowManagerDrawComplete) {
            if (needSensorRunningLp()) {
                disable = false;
                //enable listener if not already enabled
                if (!mOrientationSensorEnabled) {
                    mOrientationListener.enable();
                    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 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));
        if (panic) {
            mHandler.post(mHiddenNavPanic);
        }

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

        // 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();
            }
        }

        // 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
                || mScreenshotChordVolumeUpKeyTriggered;
        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()) {
                    Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
                    msg.setAsynchronous(true);
                    mHandler.sendMessageDelayed(msg,
                            ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
                }
            } else {
                wakeUpFromPowerKey(event.getDownTime());

                if (mSupportLongPressPowerWhenNonInteractive && hasLongPressOnPowerBehavior()) {
                    Message msg = mHandler.obtainMessage(MSG_POWER_LONG_PRESS);
                    msg.setAsynchronous(true);
                    mHandler.sendMessageDelayed(msg,
                            ViewConfiguration.get(mContext).getDeviceGlobalActionKeyTimeout());
                    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.getDoubleTapTimeout());
                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);
        }
    }

    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;
        }

        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:
                    mPowerManager.goToSleep(eventTime,
                            PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 0);
                    break;
                case SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP:
                    mPowerManager.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:
                    mPowerManager.goToSleep(eventTime,
                            PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON,
                            PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE);
                    launchHomeFromHotKey();
                    break;
                case SHORT_PRESS_POWER_GO_HOME:
                    launchHomeFromHotKey(true /* awakenFromDreams */, false /*respectKeyguard*/);
                    break;
            }
        }
    }

    private void powerMultiPressAction(long eventTime, boolean interactive, int behavior) {
        switch (behavior) {
            case MULTI_PRESS_POWER_NOTHING:
                break;
            case MULTI_PRESS_POWER_THEATER_MODE:
                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) {
                        mPowerManager.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;
            if (!performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false)) {
                performAuditoryFeedbackForAccessibilityIfNeed();
            }
            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;
        }
    }

    private void sleepPress(long eventTime) {
        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)");
                mPowerManager.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 void interceptScreenshotChord() {
        if (mScreenshotChordEnabled
                && mScreenshotChordVolumeDownKeyTriggered && mScreenshotChordPowerKeyTriggered
                && !mScreenshotChordVolumeUpKeyTriggered) {
            final long now = SystemClock.uptimeMillis();
            if (now <= mScreenshotChordVolumeDownKeyTime + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS
                    && now <= mScreenshotChordPowerKeyTime
                            + SCREENSHOT_CHORD_DEBOUNCE_DELAY_MILLIS) {
                mScreenshotChordVolumeDownKeyConsumed = true;
                cancelPendingPowerKeyAction();

                mHandler.postDelayed(mScreenshotRunnable, getScreenshotChordLongPressDelay());
            }
        }
    }

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

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

    private final Runnable mScreenshotRunnable = new Runnable() {
        @Override
        public void run() {
            takeScreenshot();
        }
    };

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

    void showGlobalActionsInternal() {
        sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
        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() {
        return Settings.Secure.getIntForUser(mContext.getContentResolver(),
                Settings.Secure.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.
        getHdmiControl().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.
     */
    private HdmiControl getHdmiControl() {
        if (null == mHdmiControl) {
            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) {
            mHomeConsumed = true;
            performHapticFeedbackLw(null, HapticFeedbackConstants.LONG_PRESS, false);

            if (mLongPressOnHomeBehavior == LONG_PRESS_HOME_RECENT_SYSTEM_UI) {
                toggleRecentApps();
            } else if (mLongPressOnHomeBehavior == LONG_PRESS_HOME_ASSIST) {
                launchAssistAction(null, deviceId);
            }
        }
    }

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

    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);
        mDreamManagerInternal = LocalServices.getService(DreamManagerInternal.class);

        // 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.getRotation());
        } 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);
        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);

        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);
        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);

        mShortPressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_shortPressOnPowerBehavior);
        mLongPressOnPowerBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_longPressOnPowerBehavior);
        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);

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

        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
        mSystemGestures = new SystemGesturesPointerEventListener(context,
                new SystemGesturesPointerEventListener.Callbacks() {
                    @Override
                    public void onSwipeFromTop() {
                        if (mStatusBar != null) {
                            requestTransientBars(mStatusBar);
                        }
                    }
                    @Override
                    public void onSwipeFromBottom() {
                        if (mNavigationBar != null && mNavigationBarOnBottom) {
                            requestTransientBars(mNavigationBar);
                        }
                    }
                    @Override
                    public void onSwipeFromRight() {
                        if (mNavigationBar != null && !mNavigationBarOnBottom) {
                            requestTransientBars(mNavigationBar);
                        }
                    }
                    @Override
                    public void onDebug() {
                        // no-op
                    }
                    @Override
                    public void onDown() {
                        mOrientationListener.onTouchStart();
                    }
                    @Override
                    public void onUpOrCancel() {
                        mOrientationListener.onTouchEnd();
                    }
                });
        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);
        mVirtualKeyVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_virtualKeyVibePattern);
        mKeyboardTapVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_keyboardTapVibePattern);
        mClockTickVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_clockTickVibePattern);
        mCalendarDateVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_calendarDateVibePattern);
        mSafeModeDisabledVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_safeModeDisabledVibePattern);
        mSafeModeEnabledVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_safeModeEnabledVibePattern);
        mContextClickVibePattern = getLongIntArray(mContext.getResources(),
                com.android.internal.R.array.config_contextClickVibePattern);

        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());
    }

    /**
     * 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() {
        mLongPressOnHomeBehavior = mContext.getResources().getInteger(
                com.android.internal.R.integer.config_longPressOnHomeBehavior);
        if (mLongPressOnHomeBehavior < LONG_PRESS_HOME_NOTHING ||
                mLongPressOnHomeBehavior > LONG_PRESS_HOME_ASSIST) {
            mLongPressOnHomeBehavior = LONG_PRESS_HOME_NOTHING;
        }

        mDoubleTapOnHomeBehavior = mContext.getResources().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;
        }
    }

    @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.
        if (mContext == null || display.getDisplayId() != Display.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;
            }
        }

        mStatusBarHeight =
                res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);

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

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

        // 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
        mForceDefaultOrientation = longSizeDp >= 960 && shortSizeDp >= 720 &&
                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
                && !mAccessibilityManager.isTouchExplorationEnabled();
    }

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

    @Override
    public void setDisplayOverscan(Display display, int left, int top, int right, int bottom) {
        if (display.getDisplayId() == Display.DEFAULT_DISPLAY) {
            mOverscanLeft = left;
            mOverscanTop = top;
            mOverscanRight = right;
            mOverscanBottom = bottom;
        }
    }

    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);

            // 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);
            }
            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(Context.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(Context.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) {
        int type = attrs.type;

        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 WindowManagerGlobal.ADD_OKAY;
        }
        String permission = null;
        switch (type) {
            case TYPE_TOAST:
                // XXX right now the app process has complete control over
                // this...  should introduce a token to let the system
                // monitor/control what they are doing.
                outAppOp[0] = AppOpsManager.OP_TOAST_WINDOW;
                break;
            case TYPE_DREAM:
            case TYPE_INPUT_METHOD:
            case TYPE_WALLPAPER:
            case TYPE_PRIVATE_PRESENTATION:
            case TYPE_VOICE_INTERACTION:
            case TYPE_ACCESSIBILITY_OVERLAY:
                // The window manager will check these.
                break;
            case TYPE_PHONE:
            case TYPE_PRIORITY_PHONE:
            case TYPE_SYSTEM_ALERT:
            case TYPE_SYSTEM_ERROR:
            case TYPE_SYSTEM_OVERLAY:
                permission = android.Manifest.permission.SYSTEM_ALERT_WINDOW;
                outAppOp[0] = AppOpsManager.OP_SYSTEM_ALERT_WINDOW;
                break;
            default:
                permission = android.Manifest.permission.INTERNAL_SYSTEM_WINDOW;
        }
        if (permission != null) {
            if (mContext.checkCallingOrSelfPermission(permission)
                    != PackageManager.PERMISSION_GRANTED) {
                return WindowManagerGlobal.ADD_PERMISSION_DENIED;
            }
        }
        return WindowManagerGlobal.ADD_OKAY;
    }

    @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_SCRIM:
            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_PRIVATE_PRESENTATION:
                break;
        }

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

    @Override
    public void adjustWindowParamsLw(WindowManager.LayoutParams attrs) {
        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_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 (mKeyguardHidden) {
                    attrs.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
                    attrs.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
                }
                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;
        }

        if (ActivityManager.isHighEndGfx()
                && (attrs.flags & FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) != 0) {
            attrs.subtreeSystemUiVisibility |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
        }
    }

    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();
        applyLidSwitchState();

        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;
        }
    }

    /** {@inheritDoc} */
    @Override
    public int windowTypeToLayerLw(int type) {
        if (type >= FIRST_APPLICATION_WINDOW && type <= LAST_APPLICATION_WINDOW) {
            return 2;
        }
        switch (type) {
        case TYPE_PRIVATE_PRESENTATION:
            return 2;
        case TYPE_WALLPAPER:
            // wallpaper is at the bottom, though the window manager may move it.
            return 2;
        case TYPE_PHONE:
            return 3;
        case TYPE_SEARCH_BAR:
        case TYPE_VOICE_INTERACTION_STARTING:
            return 4;
        case TYPE_VOICE_INTERACTION:
            // voice interaction layer is almost immediately above apps.
            return 5;
        case TYPE_INPUT_CONSUMER:
            return 6;
        case TYPE_SYSTEM_DIALOG:
            return 7;
        case TYPE_TOAST:
            // toasts and the plugged-in battery thing
            return 8;
        case TYPE_PRIORITY_PHONE:
            // SIM errors and unlock.  Not sure if this really should be in a high layer.
            return 9;
        case TYPE_DREAM:
            // used for Dreams (screensavers with TYPE_DREAM windows)
            return 10;
        case TYPE_SYSTEM_ALERT:
            // like the ANR / app crashed dialogs
            return 11;
        case TYPE_INPUT_METHOD:
            // on-screen keyboards and other such input method user interfaces go here.
            return 12;
        case TYPE_INPUT_METHOD_DIALOG:
            // on-screen keyboards and other such input method user interfaces go here.
            return 13;
        case TYPE_KEYGUARD_SCRIM:
            // the safety window that shows behind keyguard while keyguard is starting
            return 14;
        case TYPE_STATUS_BAR_SUB_PANEL:
            return 15;
        case TYPE_STATUS_BAR:
            return 16;
        case TYPE_STATUS_BAR_PANEL:
            return 17;
        case TYPE_KEYGUARD_DIALOG:
            return 18;
        case TYPE_VOLUME_OVERLAY:
            // the on-screen volume indicator and controller shown when the user
            // changes the device volume
            return 19;
        case TYPE_SYSTEM_OVERLAY:
            // the on-screen volume indicator and controller shown when the user
            // changes the device volume
            return 20;
        case TYPE_NAVIGATION_BAR:
            // the navigation bar, if available, shows atop most things
            return 21;
        case TYPE_NAVIGATION_BAR_PANEL:
            // some panels (e.g. search) need to show on top of the navigation bar
            return 22;
        case TYPE_SYSTEM_ERROR:
            // system-level error dialogs
            return 23;
        case TYPE_MAGNIFICATION_OVERLAY:
            // used to highlight the magnified portion of a display
            return 24;
        case TYPE_DISPLAY_OVERLAY:
            // used to simulate secondary display devices
            return 25;
        case TYPE_DRAG:
            // the drag layer: input for drag-and-drop is associated with this window,
            // which sits above all other focusable windows
            return 26;
        case TYPE_ACCESSIBILITY_OVERLAY:
            // overlay put by accessibility services to intercept user interaction
            return 27;
        case TYPE_SECURE_SYSTEM_OVERLAY:
            return 28;
        case TYPE_BOOT_PROGRESS:
            return 29;
        case TYPE_POINTER:
            // the (mouse) pointer layer
            return 30;
        }
        Log.e(TAG, "Unknown window type: " + type);
        return 2;
    }

    /** {@inheritDoc} */
    @Override
    public int subWindowTypeToLayerLw(int type) {
        switch (type) {
        case TYPE_APPLICATION_PANEL:
        case TYPE_APPLICATION_ATTACHED_DIALOG:
            return APPLICATION_PANEL_SUBLAYER;
        case TYPE_APPLICATION_MEDIA:
            return APPLICATION_MEDIA_SUBLAYER;
        case TYPE_APPLICATION_MEDIA_OVERLAY:
            return APPLICATION_MEDIA_OVERLAY_SUBLAYER;
        case TYPE_APPLICATION_SUB_PANEL:
            return APPLICATION_SUB_PANEL_SUBLAYER;
        case TYPE_APPLICATION_ABOVE_SUB_PANEL:
            return APPLICATION_ABOVE_SUB_PANEL_SUBLAYER;
        }
        Log.e(TAG, "Unknown sub-window type: " + type);
        return 0;
    }

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

    @Override
    public int getNonDecorDisplayWidth(int fullWidth, int fullHeight, int rotation) {
        if (mHasNavigationBar) {
            // For a basic navigation bar, when we are in landscape mode we place
            // the navigation bar to the side.
            if (mNavigationBarCanMove && fullWidth > fullHeight) {
                return fullWidth - mNavigationBarWidthForRotation[rotation];
            }
        }
        return fullWidth;
    }

    @Override
    public int getNonDecorDisplayHeight(int fullWidth, int fullHeight, int rotation) {
        if (mHasNavigationBar) {
            // For a basic navigation bar, when we are in portrait mode we place
            // the navigation bar to the bottom.
            if (!mNavigationBarCanMove || fullWidth < fullHeight) {
                return fullHeight - mNavigationBarHeightForRotation[rotation];
            }
        }
        return fullHeight;
    }

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

    @Override
    public int getConfigDisplayHeight(int fullWidth, int fullHeight, int rotation) {
        // 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.
        return getNonDecorDisplayHeight(fullWidth, fullHeight, rotation) - mStatusBarHeight;
    }

    @Override
    public boolean isForceHiding(WindowManager.LayoutParams attrs) {
        return (attrs.privateFlags & PRIVATE_FLAG_KEYGUARD) != 0 ||
                (isKeyguardHostWindow(attrs) &&
                        (mKeyguardDelegate != null && mKeyguardDelegate.isShowing())) ||
                (attrs.type == TYPE_KEYGUARD_SCRIM);
    }

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

    @Override
    public boolean canBeForceHidden(WindowState win, WindowManager.LayoutParams attrs) {
        switch (attrs.type) {
            case TYPE_STATUS_BAR:
            case TYPE_NAVIGATION_BAR:
            case TYPE_WALLPAPER:
            case TYPE_DREAM:
            case TYPE_KEYGUARD_SCRIM:
                return false;
            default:
                // Hide only windows below the keyguard host window.
                return windowTypeToLayerLw(win.getBaseType())
                        < windowTypeToLayerLw(TYPE_STATUS_BAR);
        }
    }

    @Override
    public WindowState getWinShowWhenLockedLw() {
        return mWinShowWhenLocked;
    }

    /** {@inheritDoc} */
    @Override
    public View addStartingWindow(IBinder appToken, String packageName, int theme,
            CompatibilityInfo compatInfo, CharSequence nonLocalizedLabel, int labelRes,
            int icon, int logo, int windowFlags) {
        if (!SHOW_STARTING_ANIMATIONS) {
            return null;
        }
        if (packageName == null) {
            return null;
        }

        WindowManager wm = null;
        View view = null;

        try {
            Context context = mContext;
            if (DEBUG_STARTING_WINDOW) Slog.d(TAG, "addStartingWindow " + packageName
                    + ": nonLocalizedLabel=" + nonLocalizedLabel + " theme="
                    + Integer.toHexString(theme));
            if (theme != context.getThemeResId() || labelRes != 0) {
                try {
                    context = context.createPackageContext(packageName, 0);
                    context.setTheme(theme);
                } catch (PackageManager.NameNotFoundException e) {
                    // Ignore
                }
            }

            PhoneWindow win = new PhoneWindow(context);
            win.setIsStartingWindow(true);
            final TypedArray ta = win.getWindowStyle();
            if (ta.getBoolean(
                        com.android.internal.R.styleable.Window_windowDisablePreview, false)
                || ta.getBoolean(
                        com.android.internal.R.styleable.Window_windowShowWallpaper,false)) {
                return null;
            }

            Resources r = context.getResources();
            win.setTitle(r.getText(labelRes, nonLocalizedLabel));

            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 (mKeyguardHidden) {
                    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("Starting " + packageName);

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

            if (win.isFloating()) {
                // Whoops, there is no way to display an animation/preview
                // of such a thing!  After all that work...  let's skip it.
                // (Note that we must do this here because it is in
                // getDecorView() where the theme is evaluated...  maybe
                // we should peek the floating attribute from the theme
                // earlier.)
                return null;
            }

            if (DEBUG_STARTING_WINDOW) Slog.d(
                TAG, "Adding starting 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 ? view : 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;
    }

    /** {@inheritDoc} */
    @Override
    public void removeStartingWindow(IBinder appToken, View window) {
        if (DEBUG_STARTING_WINDOW) Slog.v(TAG, "Removing starting window for " + appToken + ": "
                + window + " Callers=" + Debug.getCallers(4));

        if (window != null) {
            WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE);
            wm.removeView(window);
        }
    }

    /**
     * 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) {
        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);
                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);
                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;
            case TYPE_KEYGUARD_SCRIM:
                if (mKeyguardScrim != null) {
                    return WindowManagerGlobal.ADD_MULTIPLE_SINGLETON;
                }
                mKeyguardScrim = win;
                break;
        }
        return WindowManagerGlobal.ADD_OKAY;
    }

    /** {@inheritDoc} */
    @Override
    public void removeWindowLw(WindowState win) {
        if (mStatusBar == win) {
            mStatusBar = null;
            mStatusBarController.setWindow(null);
            mKeyguardDelegate.showScrim();
        } else if (mKeyguardScrim == win) {
            Log.v(TAG, "Removing keyguard scrim");
            mKeyguardScrim = null;
        } if (mNavigationBar == win) {
            mNavigationBar = null;
            mNavigationBarController.setWindow(null);
        }
    }

    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) {
            boolean isKeyguard = (win.getAttrs().privateFlags & PRIVATE_FLAG_KEYGUARD) != 0;
            if (transit == TRANSIT_EXIT
                    || transit == TRANSIT_HIDE) {
                return isKeyguard ? -1 : R.anim.dock_top_exit;
            } else if (transit == TRANSIT_ENTER
                    || transit == TRANSIT_SHOW) {
                return isKeyguard ? -1 : R.anim.dock_top_enter;
            }
        } else if (win == mNavigationBar) {
            // This can be on either the bottom or the right.
            if (mNavigationBarOnBottom) {
                if (transit == TRANSIT_EXIT
                        || transit == TRANSIT_HIDE) {
                    return R.anim.dock_bottom_exit;
                } else if (transit == TRANSIT_ENTER
                        || transit == TRANSIT_SHOW) {
                    return R.anim.dock_bottom_enter;
                }
            } else {
                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;
                }
            }
        }

        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;
    }

    @Override
    public void selectRotationAnimationLw(int anim[]) {
        if (PRINT_ANIM) Slog.i(TAG, "selectRotationAnimation mTopFullscreen="
                + mTopFullscreenOpaqueWindowState + " rotationAnimation="
                + (mTopFullscreenOpaqueWindowState == null ?
                        "0" : mTopFullscreenOpaqueWindowState.getAttrs().rotationAnimation));
        if (mTopFullscreenOpaqueWindowState != null && mTopIsFullscreen) {
            switch (mTopFullscreenOpaqueWindowState.getAttrs().rotationAnimation) {
                case ROTATION_ANIMATION_CROSSFADE:
                    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 createForceHideEnterAnimation(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 createForceHideWallpaperExitAnimation(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;
            }
        }

        // 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;
        }

        // 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;
                }

                // If an incoming call is ringing, HOME is totally disabled.
                // (The user is already on the InCallUI at this point,
                // and his ONLY options are to answer or reject the call.)
                TelecomManager telecomManager = getTelecommService();
                if (telecomManager != null && telecomManager.isRinging()) {
                    Log.i(TAG, "Ignoring HOME; there's a ringing incoming call.");
                    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 == WindowManager.LayoutParams.TYPE_KEYGUARD_SCRIM
                        || type == WindowManager.LayoutParams.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 (mLongPressOnHomeBehavior == LONG_PRESS_HOME_RECENT_SYSTEM_UI
                        || 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 (SHOW_PROCESSES_ON_ALT_MENU &&
                        (metaState & KeyEvent.META_ALT_ON) == KeyEvent.META_ALT_ON) {
                    Intent service = new Intent();
                    service.setClassName(mContext, "com.android.server.LoadAverageService");
                    ContentResolver res = mContext.getContentResolver();
                    boolean shown = Settings.Global.getInt(
                            res, Settings.Global.SHOW_PROCESSES, 0) != 0;
                    if (!shown) {
                        mContext.startService(service);
                    } else {
                        mContext.stopService(service);
                    }
                    Settings.Global.putInt(
                            res, Settings.Global.SHOW_PROCESSES, shown ? 0 : 1);
                    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_ASSIST) {
            if (down) {
                if (repeatCount == 0) {
                    mAssistKeyLongPressed = false;
                } else if (repeatCount == 1) {
                    mAssistKeyLongPressed = true;
                    if (!keyguardOn) {
                         launchAssistLongPressAction();
                    }
                }
            } else {
                if (mAssistKeyLongPressed) {
                    mAssistKeyLongPressed = false;
                } else {
                    if (!keyguardOn) {
                        launchAssistAction(null, event.getDeviceId());
                    }
                }
            }
            return -1;
        } else if (keyCode == KeyEvent.KEYCODE_VOICE_ASSIST) {
            if (!down) {
                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);
            }
        } else if (keyCode == KeyEvent.KEYCODE_SYSRQ) {
            if (down && repeatCount == 0) {
                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 (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);
                        } 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);
                    } 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);
                } 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) {
                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 language switching.
        if (down && repeatCount == 0
                && (keyCode == KeyEvent.KEYCODE_LANGUAGE_SWITCH
                        || (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;
        }
        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;
        }

        // 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;
    }

    /** {@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;
    }

    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() {
        launchAssistAction(null, Integer.MIN_VALUE);
    }

    private void launchAssistAction(String hint) {
        launchAssistAction(hint, Integer.MIN_VALUE);
    }

    private void launchAssistAction(String hint, int deviceId) {
        sendCloseSystemWindows(SYSTEM_DIALOG_REASON_ASSIST);
        Bundle args = null;
        if (deviceId > Integer.MIN_VALUE) {
            args = new Bundle();
            args.putInt(Intent.EXTRA_ASSIST_INPUT_DEVICE_ID, deviceId);
        }
        ((SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE))
                .launchAssistAction(hint, UserHandle.myUserId(), 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;
        try {
            IStatusBarService statusbar = getStatusBarService();
            if (statusbar != null) {
                statusbar.preloadRecentApps();
            }
        } catch (RemoteException e) {
            Slog.e(TAG, "RemoteException when preloading recent apps", e);
            // re-acquire status bar service next time it is needed.
            mStatusBarService = null;
        }
    }

    private void cancelPreloadRecentApps() {
        if (mPreloadedRecentApps) {
            mPreloadedRecentApps = false;
            try {
                IStatusBarService statusbar = getStatusBarService();
                if (statusbar != null) {
                    statusbar.cancelPreloadRecentApps();
                }
            } catch (RemoteException e) {
                Slog.e(TAG, "RemoteException when cancelling recent apps preload", e);
                // re-acquire status bar service next time it is needed.
                mStatusBarService = null;
            }
        }
    }

    private void toggleRecentApps() {
        mPreloadedRecentApps = false; // preloading no longer needs to be canceled
        try {
            IStatusBarService statusbar = getStatusBarService();
            if (statusbar != null) {
                statusbar.toggleRecentApps();
            }
        } catch (RemoteException e) {
            Slog.e(TAG, "RemoteException when toggling recent apps", e);
            // re-acquire status bar service next time it is needed.
            mStatusBarService = null;
        }
    }

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

    private void showRecentApps(boolean triggeredFromAltTab) {
        mPreloadedRecentApps = false; // preloading no longer needs to be canceled
        try {
            IStatusBarService statusbar = getStatusBarService();
            if (statusbar != null) {
                statusbar.showRecentApps(triggeredFromAltTab);
            }
        } catch (RemoteException e) {
            Slog.e(TAG, "RemoteException when showing recent apps", e);
            // re-acquire status bar service next time it is needed.
            mStatusBarService = null;
        }
    }

    private void hideRecentApps(boolean triggeredFromAltTab, boolean triggeredFromHome) {
        mPreloadedRecentApps = false; // preloading no longer needs to be canceled
        try {
            IStatusBarService statusbar = getStatusBarService();
            if (statusbar != null) {
                statusbar.hideRecentApps(triggeredFromAltTab, triggeredFromHome);
            }
        } catch (RemoteException e) {
            Slog.e(TAG, "RemoteException when closing recent apps", e);
            // re-acquire status bar service next time it is needed.
            mStatusBarService = null;
        }
    }

    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) {
        if (respectKeyguard) {
            if (isKeyguardShowingAndNotOccluded()) {
                // don't launch home if keyguard showing
                return;
            }

            if (!mHideLockScreen && 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) {
                            try {
                                ActivityManagerNative.getDefault().stopAppSwitches();
                            } catch (RemoteException e) {
                            }
                            sendCloseSystemWindows(SYSTEM_DIALOG_REASON_HOME_KEY);
                            startDockOrHome(true /*fromHomeKey*/, awakenFromDreams);
                        }
                    }
                });
                return;
            }
        }

        // no keyguard stuff to worry about, just launch home!
        try {
            ActivityManagerNative.getDefault().stopAppSwitches();
        } catch (RemoteException e) {
        }
        if (mRecentsVisible) {
            // Hide Recents and notify it to launch Home
            if (awakenFromDreams) {
                awakenDreams();
            }
            sendCloseSystemWindows(SYSTEM_DIALOG_REASON_HOME_KEY);
            hideRecentApps(false, true);
        } else {
            // Otherwise, just launch Home
            sendCloseSystemWindows(SYSTEM_DIALOG_REASON_HOME_KEY);
            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) {
            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()) {
                            // 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);
            }
        }
    }
    final InputEventReceiver.Factory mHideNavInputEventReceiverFactory =
            new InputEventReceiver.Factory() {
        @Override
        public InputEventReceiver createInputEventReceiver(
                InputChannel inputChannel, Looper looper) {
            return new HideNavInputEventReceiver(inputChannel, looper);
        }
    };

    @Override
    public int adjustSystemUiVisibilityLw(int visibility) {
        mStatusBarController.adjustSystemUiVisibilityLw(mLastSystemUiFlags, visibility);
        mNavigationBarController.adjustSystemUiVisibilityLw(mLastSystemUiFlags, visibility);
        mRecentsVisible = (visibility & View.RECENT_APPS_VISIBLE) > 0;

        // 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
    public void getInsetHintLw(WindowManager.LayoutParams attrs, Rect outContentInsets,
            Rect outStableInsets) {
        final int fl = PolicyControl.getWindowFlags(null, attrs);
        final int sysuiVis = PolicyControl.getSystemUiVisibility(null, attrs);
        final int systemUiVisibility = (sysuiVis | attrs.subtreeSystemUiVisibility);

        if ((fl & (FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR))
                == (FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR)) {
            int availRight, availBottom;
            if (canHideNavigationBar() &&
                    (systemUiVisibility & View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) != 0) {
                availRight = mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
                availBottom = mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
            } else {
                availRight = mRestrictedScreenLeft + mRestrictedScreenWidth;
                availBottom = mRestrictedScreenTop + mRestrictedScreenHeight;
            }
            if ((systemUiVisibility & View.SYSTEM_UI_FLAG_LAYOUT_STABLE) != 0) {
                if ((fl & FLAG_FULLSCREEN) != 0) {
                    outContentInsets.set(mStableFullscreenLeft, mStableFullscreenTop,
                            availRight - mStableFullscreenRight,
                            availBottom - mStableFullscreenBottom);
                } else {
                    outContentInsets.set(mStableLeft, mStableTop,
                            availRight - mStableRight, availBottom - mStableBottom);
                }
            } else if ((fl & FLAG_FULLSCREEN) != 0 || (fl & FLAG_LAYOUT_IN_OVERSCAN) != 0) {
                outContentInsets.setEmpty();
            } else if ((systemUiVisibility & (View.SYSTEM_UI_FLAG_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)) == 0) {
                outContentInsets.set(mCurLeft, mCurTop,
                        availRight - mCurRight, availBottom - mCurBottom);
            } else {
                outContentInsets.set(mCurLeft, mCurTop,
                        availRight - mCurRight, availBottom - mCurBottom);
            }

            outStableInsets.set(mStableLeft, mStableTop,
                    availRight - mStableRight, availBottom - mStableBottom);
            return;
        }
        outContentInsets.setEmpty();
        outStableInsets.setEmpty();
    }

    /** {@inheritDoc} */
    @Override
    public void beginLayoutLw(boolean isDefaultDisplay, int displayWidth, int displayHeight,
                              int displayRotation) {
        final int overscanLeft, overscanTop, overscanRight, overscanBottom;
        if (isDefaultDisplay) {
            switch (displayRotation) {
                case Surface.ROTATION_90:
                    overscanLeft = mOverscanTop;
                    overscanTop = mOverscanRight;
                    overscanRight = mOverscanBottom;
                    overscanBottom = mOverscanLeft;
                    break;
                case Surface.ROTATION_180:
                    overscanLeft = mOverscanRight;
                    overscanTop = mOverscanBottom;
                    overscanRight = mOverscanLeft;
                    overscanBottom = mOverscanTop;
                    break;
                case Surface.ROTATION_270:
                    overscanLeft = mOverscanBottom;
                    overscanTop = mOverscanLeft;
                    overscanRight = mOverscanTop;
                    overscanBottom = mOverscanRight;
                    break;
                default:
                    overscanLeft = mOverscanLeft;
                    overscanTop = mOverscanTop;
                    overscanRight = mOverscanRight;
                    overscanBottom = mOverscanBottom;
                    break;
            }
        } else {
            overscanLeft = 0;
            overscanTop = 0;
            overscanRight = 0;
            overscanBottom = 0;
        }
        mOverscanScreenLeft = mRestrictedOverscanScreenLeft = 0;
        mOverscanScreenTop = mRestrictedOverscanScreenTop = 0;
        mOverscanScreenWidth = mRestrictedOverscanScreenWidth = displayWidth;
        mOverscanScreenHeight = mRestrictedOverscanScreenHeight = displayHeight;
        mSystemLeft = 0;
        mSystemTop = 0;
        mSystemRight = displayWidth;
        mSystemBottom = displayHeight;
        mUnrestrictedScreenLeft = overscanLeft;
        mUnrestrictedScreenTop = overscanTop;
        mUnrestrictedScreenWidth = displayWidth - overscanLeft - overscanRight;
        mUnrestrictedScreenHeight = displayHeight - overscanTop - overscanBottom;
        mRestrictedScreenLeft = mUnrestrictedScreenLeft;
        mRestrictedScreenTop = mUnrestrictedScreenTop;
        mRestrictedScreenWidth = mSystemGestures.screenWidth = mUnrestrictedScreenWidth;
        mRestrictedScreenHeight = mSystemGestures.screenHeight = mUnrestrictedScreenHeight;
        mDockLeft = mContentLeft = mVoiceContentLeft = mStableLeft = mStableFullscreenLeft
                = mCurLeft = mUnrestrictedScreenLeft;
        mDockTop = mContentTop = mVoiceContentTop = mStableTop = mStableFullscreenTop
                = mCurTop = mUnrestrictedScreenTop;
        mDockRight = mContentRight = mVoiceContentRight = mStableRight = mStableFullscreenRight
                = mCurRight = displayWidth - overscanRight;
        mDockBottom = mContentBottom = mVoiceContentBottom = mStableBottom = mStableFullscreenBottom
                = mCurBottom = displayHeight - overscanBottom;
        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;
        final Rect osf = mTmpOutsetFrame;
        pf.left = df.left = of.left = vf.left = mDockLeft;
        pf.top = df.top = of.top = vf.top = mDockTop;
        pf.right = df.right = of.right = vf.right = mDockRight;
        pf.bottom = df.bottom = of.bottom = vf.bottom = mDockBottom;
        dcf.setEmpty();  // Decor frame N/A for system bars.

        if (isDefaultDisplay) {
            // 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.SYSTEM_UI_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() && !mHideLockScreen;
            if (!isKeyguardShowing) {
                navTranslucent &= areTranslucentBarsAllowed();
            }

            // 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) {
                    mInputConsumer.dismiss();
                    mInputConsumer = null;
                }
            } else if (mInputConsumer == null) {
                mInputConsumer = mWindowManagerFuncs.addInputConsumer(mHandler.getLooper(),
                        mHideNavInputEventReceiverFactory);
            }

            // 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 = false;
            if (mNavigationBar != null) {
                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.
                mNavigationBarOnBottom = (!mNavigationBarCanMove || displayWidth < displayHeight);
                if (mNavigationBarOnBottom) {
                    // It's a system nav bar or a portrait screen; nav bar goes on bottom.
                    int top = displayHeight - overscanBottom
                            - mNavigationBarHeightForRotation[displayRotation];
                    mTmpNavigationFrame.set(0, top, displayWidth, displayHeight - overscanBottom);
                    mStableBottom = mStableFullscreenBottom = mTmpNavigationFrame.top;
                    if (transientNavBarShowing) {
                        mNavigationBarController.setBarShowingLw(true);
                    } else if (navVisible) {
                        mNavigationBarController.setBarShowingLw(true);
                        mDockBottom = mTmpNavigationFrame.top;
                        mRestrictedScreenHeight = mDockBottom - mRestrictedScreenTop;
                        mRestrictedOverscanScreenHeight = mDockBottom - mRestrictedOverscanScreenTop;
                    } else {
                        // We currently want to hide the navigation UI.
                        mNavigationBarController.setBarShowingLw(false);
                    }
                    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.
                        mSystemBottom = mTmpNavigationFrame.top;
                    }
                } else {
                    // Landscape screen; nav bar goes to the right.
                    int left = displayWidth - overscanRight
                            - mNavigationBarWidthForRotation[displayRotation];
                    mTmpNavigationFrame.set(left, 0, displayWidth - overscanRight, displayHeight);
                    mStableRight = mStableFullscreenRight = mTmpNavigationFrame.left;
                    if (transientNavBarShowing) {
                        mNavigationBarController.setBarShowingLw(true);
                    } else if (navVisible) {
                        mNavigationBarController.setBarShowingLw(true);
                        mDockRight = mTmpNavigationFrame.left;
                        mRestrictedScreenWidth = mDockRight - mRestrictedScreenLeft;
                        mRestrictedOverscanScreenWidth = mDockRight - mRestrictedOverscanScreenLeft;
                    } else {
                        // We currently want to hide the navigation UI.
                        mNavigationBarController.setBarShowingLw(false);
                    }
                    if (navVisible && !navTranslucent && !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.
                        mSystemRight = mTmpNavigationFrame.left;
                    }
                }
                // Make sure the content and current rectangles are updated to
                // account for the restrictions from the navigation bar.
                mContentTop = mVoiceContentTop = mCurTop = mDockTop;
                mContentBottom = mVoiceContentBottom = mCurBottom = mDockBottom;
                mContentLeft = mVoiceContentLeft = mCurLeft = mDockLeft;
                mContentRight = mVoiceContentRight = mCurRight = mDockRight;
                mStatusBarLayer = mNavigationBar.getSurfaceLayer();
                // And compute the final frame.
                mNavigationBar.computeFrameLw(mTmpNavigationFrame, mTmpNavigationFrame,
                        mTmpNavigationFrame, mTmpNavigationFrame, mTmpNavigationFrame, dcf,
                        mTmpNavigationFrame, mTmpNavigationFrame);
                if (DEBUG_LAYOUT) Slog.i(TAG, "mNavigationBar frame: " + mTmpNavigationFrame);
                if (mNavigationBarController.checkHiddenLw()) {
                    updateSysUiVisibility = true;
                }
            }
            if (DEBUG_LAYOUT) Slog.i(TAG, String.format("mDock rect: (%d,%d - %d,%d)",
                    mDockLeft, mDockTop, mDockRight, mDockBottom));

            // decide where the status bar goes ahead of time
            if (mStatusBar != null) {
                // apply any navigation bar insets
                pf.left = df.left = of.left = mUnrestrictedScreenLeft;
                pf.top = df.top = of.top = mUnrestrictedScreenTop;
                pf.right = df.right = of.right = mUnrestrictedScreenWidth + mUnrestrictedScreenLeft;
                pf.bottom = df.bottom = of.bottom = mUnrestrictedScreenHeight
                        + mUnrestrictedScreenTop;
                vf.left = mStableLeft;
                vf.top = mStableTop;
                vf.right = mStableRight;
                vf.bottom = mStableBottom;

                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 */);

                // For layout, the status bar is always at the top with our fixed height.
                mStableTop = mUnrestrictedScreenTop + mStatusBarHeight;

                boolean statusBarTransient = (sysui & View.STATUS_BAR_TRANSIENT) != 0;
                boolean statusBarTranslucent = (sysui
                        & (View.STATUS_BAR_TRANSLUCENT | View.SYSTEM_UI_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.
                    mDockTop = mUnrestrictedScreenTop + mStatusBarHeight;

                    mContentTop = mVoiceContentTop = mCurTop = mDockTop;
                    mContentBottom = mVoiceContentBottom = mCurBottom = mDockBottom;
                    mContentLeft = mVoiceContentLeft = mCurLeft = mDockLeft;
                    mContentRight = mVoiceContentRight = mCurRight = mDockRight;

                    if (DEBUG_LAYOUT) Slog.v(TAG, "Status bar: " +
                        String.format(
                            "dock=[%d,%d][%d,%d] content=[%d,%d][%d,%d] cur=[%d,%d][%d,%d]",
                            mDockLeft, mDockTop, mDockRight, mDockBottom,
                            mContentLeft, mContentTop, mContentRight, mContentBottom,
                            mCurLeft, mCurTop, mCurRight, mCurBottom));
                }
                if (mStatusBar.isVisibleLw() && !mStatusBar.isAnimatingLw()
                        && !statusBarTransient && !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.
                    mSystemTop = mUnrestrictedScreenTop + mStatusBarHeight;
                }
                if (mStatusBarController.checkHiddenLw()) {
                    updateSysUiVisibility = true;
                }
            }
            if (updateSysUiVisibility) {
                updateSystemUiVisibilityLw();
            }
        }
    }

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

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

        return 0;
    }

    @Override
    public void getContentRectLw(Rect r) {
        r.set(mContentLeft, mContentTop, mContentRight, mContentBottom);
    }

    void setAttachedWindowFrames(WindowState win, int fl, int adjust, WindowState attached,
            boolean insetDecors, Rect pf, Rect df, Rect of, Rect cf, Rect vf) {
        if (win.getSurfaceLayer() > mDockLayer && attached.getSurfaceLayer() < mDockLayer) {
            // Here's a special case: if this attached window is a panel that is
            // above the dock window, 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.
            df.left = of.left = cf.left = vf.left = mDockLeft;
            df.top = of.top = cf.top = vf.top = mDockTop;
            df.right = of.right = cf.right = vf.right = mDockRight;
            df.bottom = of.bottom = cf.bottom = vf.bottom = mDockBottom;
        } 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()) {
                    if (cf.left < mVoiceContentLeft) cf.left = mVoiceContentLeft;
                    if (cf.top < mVoiceContentTop) cf.top = mVoiceContentTop;
                    if (cf.right > mVoiceContentRight) cf.right = mVoiceContentRight;
                    if (cf.bottom > mVoiceContentBottom) cf.bottom = mVoiceContentBottom;
                } else if (attached.getSurfaceLayer() < mDockLayer) {
                    if (cf.left < mContentLeft) cf.left = mContentLeft;
                    if (cf.top < mContentTop) cf.top = mContentTop;
                    if (cf.right > mContentRight) cf.right = mContentRight;
                    if (cf.bottom > mContentBottom) cf.bottom = mContentBottom;
                }
            }
            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) {
        if ((sysui & View.SYSTEM_UI_FLAG_LAYOUT_STABLE) != 0) {
            // If app is requesting a stable layout, don't let the
            // content insets go below the stable values.
            if ((fl & FLAG_FULLSCREEN) != 0) {
                if (r.left < mStableFullscreenLeft) r.left = mStableFullscreenLeft;
                if (r.top < mStableFullscreenTop) r.top = mStableFullscreenTop;
                if (r.right > mStableFullscreenRight) r.right = mStableFullscreenRight;
                if (r.bottom > mStableFullscreenBottom) r.bottom = mStableFullscreenBottom;
            } else {
                if (r.left < mStableLeft) r.left = mStableLeft;
                if (r.top < mStableTop) r.top = mStableTop;
                if (r.right > mStableRight) r.right = mStableRight;
                if (r.bottom > mStableBottom) r.bottom = mStableBottom;
            }
        }
    }

    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) {
        // We've already done the navigation bar and status bar. If the status bar can receive
        // input, we need to layout it again to accomodate for the IME window.
        if ((win == mStatusBar && !canReceiveInput(win)) || win == mNavigationBar) {
            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);
        }

        final int fl = PolicyControl.getWindowFlags(win, attrs);
        final int sim = attrs.softInputMode;
        final int sysUiFl = PolicyControl.getSystemUiVisibility(win, null);

        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;

        if (isDefaultDisplay) {
            sf.set(mStableLeft, mStableTop, mStableRight, mStableBottom);
        } else {
            sf.set(mOverscanLeft, mOverscanTop, mOverscanRight, mOverscanBottom);
        }

        if (!isDefaultDisplay) {
            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);
            } else {
                // Give the window full screen.
                pf.left = df.left = of.left = cf.left = mOverscanScreenLeft;
                pf.top = df.top = of.top = cf.top = mOverscanScreenTop;
                pf.right = df.right = of.right = cf.right
                        = mOverscanScreenLeft + mOverscanScreenWidth;
                pf.bottom = df.bottom = of.bottom = cf.bottom
                        = mOverscanScreenTop + mOverscanScreenHeight;
            }
        } else if (attrs.type == TYPE_INPUT_METHOD) {
            pf.left = df.left = of.left = cf.left = vf.left = mDockLeft;
            pf.top = df.top = of.top = cf.top = vf.top = mDockTop;
            pf.right = df.right = of.right = cf.right = vf.right = mDockRight;
            // IM dock windows layout below the nav bar...
            pf.bottom = df.bottom = of.bottom = mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
            // ...with content insets above the nav bar
            cf.bottom = vf.bottom = mStableBottom;
            // IM dock windows always go to the bottom of the screen.
            attrs.gravity = Gravity.BOTTOM;
            mDockLayer = win.getSurfaceLayer();
        } else if (attrs.type == TYPE_VOICE_INTERACTION) {
            pf.left = df.left = of.left = mUnrestrictedScreenLeft;
            pf.top = df.top = of.top = mUnrestrictedScreenTop;
            pf.right = df.right = of.right = mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
            pf.bottom = df.bottom = of.bottom = mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
            cf.bottom = vf.bottom = mStableBottom;
            // Note: In Phone landscape mode, the button bar should also be excluded.
            cf.right = vf.right = mStableRight;
            cf.left = vf.left = mStableLeft;
            cf.top = vf.top = mStableTop;
        } else if (win == mStatusBar) {
            pf.left = df.left = of.left = mUnrestrictedScreenLeft;
            pf.top = df.top = of.top = mUnrestrictedScreenTop;
            pf.right = df.right = of.right = mUnrestrictedScreenWidth + mUnrestrictedScreenLeft;
            pf.bottom = df.bottom = of.bottom = mUnrestrictedScreenHeight + mUnrestrictedScreenTop;
            cf.left = vf.left = mStableLeft;
            cf.top = vf.top = mStableTop;
            cf.right = vf.right = mStableRight;
            vf.bottom = mStableBottom;
            cf.bottom = mContentBottom;
        } else {

            // Default policy decor for the default display
            dcf.left = mSystemLeft;
            dcf.top = mSystemTop;
            dcf.right = mSystemRight;
            dcf.bottom = mSystemBottom;
            final boolean inheritTranslucentDecor = (attrs.privateFlags
                    & WindowManager.LayoutParams.PRIVATE_FLAG_INHERIT_TRANSLUCENT_DECOR) != 0;
            final boolean isAppWindow =
                    attrs.type >= WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW &&
                    attrs.type <= WindowManager.LayoutParams.LAST_APPLICATION_WINDOW;
            final boolean topAtRest =
                    win == mTopFullscreenOpaqueWindowState && !win.isAnimatingLw();
            if (isAppWindow && !inheritTranslucentDecor && !topAtRest) {
                if ((sysUiFl & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0
                        && (fl & WindowManager.LayoutParams.FLAG_FULLSCREEN) == 0
                        && (fl & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) == 0
                        && (fl & WindowManager.LayoutParams.
                                FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) == 0) {
                    // Ensure policy decor includes status bar
                    dcf.top = mStableTop;
                }
                if ((fl & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) == 0
                        && (sysUiFl & View.SYSTEM_UI_FLAG_HIDE_NAVIGATION) == 0
                        && (fl & WindowManager.LayoutParams.
                                FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS) == 0) {
                    // Ensure policy decor includes navigation bar
                    dcf.bottom = mStableBottom;
                    dcf.right = mStableRight;
                }
            }

            if ((fl & (FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR))
                    == (FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR)) {
                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);
                } else {
                    if (attrs.type == TYPE_STATUS_BAR_PANEL
                            || attrs.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
                                ? mDockLeft : mUnrestrictedScreenLeft;
                        pf.top = df.top = of.top = mUnrestrictedScreenTop;
                        pf.right = df.right = of.right = hasNavBar
                                ? mRestrictedScreenLeft+mRestrictedScreenWidth
                                : mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
                        pf.bottom = df.bottom = of.bottom = hasNavBar
                                ? mRestrictedScreenTop+mRestrictedScreenHeight
                                : mUnrestrictedScreenTop + mUnrestrictedScreenHeight;

                        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
                            && attrs.type >= WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW
                            && attrs.type <= WindowManager.LayoutParams.LAST_SUB_WINDOW) {
                        // Asking to layout into the overscan region, so give it that pure
                        // unrestricted area.
                        pf.left = df.left = of.left = mOverscanScreenLeft;
                        pf.top = df.top = of.top = mOverscanScreenTop;
                        pf.right = df.right = of.right = mOverscanScreenLeft + mOverscanScreenWidth;
                        pf.bottom = df.bottom = of.bottom = mOverscanScreenTop
                                + mOverscanScreenHeight;
                    } else if (canHideNavigationBar()
                            && (sysUiFl & View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) != 0
                            && attrs.type >= WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW
                            && attrs.type <= WindowManager.LayoutParams.LAST_SUB_WINDOW) {
                        // 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 to ensure no window that
                        // can be above the nav bar can do this.
                        pf.left = df.left = mOverscanScreenLeft;
                        pf.top = df.top = mOverscanScreenTop;
                        pf.right = df.right = mOverscanScreenLeft + mOverscanScreenWidth;
                        pf.bottom = df.bottom = mOverscanScreenTop + mOverscanScreenHeight;
                        // 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.left = mUnrestrictedScreenLeft;
                        of.top = mUnrestrictedScreenTop;
                        of.right = mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
                        of.bottom = mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
                    } else {
                        pf.left = df.left = mRestrictedOverscanScreenLeft;
                        pf.top = df.top = mRestrictedOverscanScreenTop;
                        pf.right = df.right = mRestrictedOverscanScreenLeft
                                + mRestrictedOverscanScreenWidth;
                        pf.bottom = df.bottom = mRestrictedOverscanScreenTop
                                + mRestrictedOverscanScreenHeight;
                        // 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.left = mUnrestrictedScreenLeft;
                        of.top = mUnrestrictedScreenTop;
                        of.right = mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
                        of.bottom = mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
                    }

                    if ((fl & FLAG_FULLSCREEN) == 0) {
                        if (win.isVoiceInteraction()) {
                            cf.left = mVoiceContentLeft;
                            cf.top = mVoiceContentTop;
                            cf.right = mVoiceContentRight;
                            cf.bottom = mVoiceContentBottom;
                        } else {
                            if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                                cf.left = mDockLeft;
                                cf.top = mDockTop;
                                cf.right = mDockRight;
                                cf.bottom = mDockBottom;
                            } else {
                                cf.left = mContentLeft;
                                cf.top = mContentTop;
                                cf.right = mContentRight;
                                cf.bottom = mContentBottom;
                            }
                        }
                    } 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 hding the
                        // status bar to one that is.
                        cf.left = mRestrictedScreenLeft;
                        cf.top = mRestrictedScreenTop;
                        cf.right = mRestrictedScreenLeft + mRestrictedScreenWidth;
                        cf.bottom = mRestrictedScreenTop + mRestrictedScreenHeight;
                    }
                    applyStableConstraints(sysUiFl, fl, cf);
                    if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                        vf.left = mCurLeft;
                        vf.top = mCurTop;
                        vf.right = mCurRight;
                        vf.bottom = mCurBottom;
                    } else {
                        vf.set(cf);
                    }
                }
            } else if ((fl & FLAG_LAYOUT_IN_SCREEN) != 0 || (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 (attrs.type == TYPE_STATUS_BAR_PANEL
                        || attrs.type == TYPE_STATUS_BAR_SUB_PANEL
                        || attrs.type == TYPE_VOLUME_OVERLAY) {
                    pf.left = df.left = of.left = cf.left = hasNavBar
                            ? mDockLeft : mUnrestrictedScreenLeft;
                    pf.top = df.top = of.top = cf.top = mUnrestrictedScreenTop;
                    pf.right = df.right = of.right = cf.right = hasNavBar
                                        ? mRestrictedScreenLeft+mRestrictedScreenWidth
                                        : mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = hasNavBar
                                          ? mRestrictedScreenTop+mRestrictedScreenHeight
                                          : mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
                    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 (attrs.type == TYPE_NAVIGATION_BAR
                        || attrs.type == TYPE_NAVIGATION_BAR_PANEL) {
                    // The navigation bar has Real Ultimate Power.
                    pf.left = df.left = of.left = mUnrestrictedScreenLeft;
                    pf.top = df.top = of.top = mUnrestrictedScreenTop;
                    pf.right = df.right = of.right = mUnrestrictedScreenLeft
                            + mUnrestrictedScreenWidth;
                    pf.bottom = df.bottom = of.bottom = mUnrestrictedScreenTop
                            + mUnrestrictedScreenHeight;
                    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 ((attrs.type == TYPE_SECURE_SYSTEM_OVERLAY
                                || attrs.type == TYPE_BOOT_PROGRESS)
                        && ((fl & FLAG_FULLSCREEN) != 0)) {
                    // Fullscreen secure system overlays get what they ask for.
                    pf.left = df.left = of.left = cf.left = mOverscanScreenLeft;
                    pf.top = df.top = of.top = cf.top = mOverscanScreenTop;
                    pf.right = df.right = of.right = cf.right = mOverscanScreenLeft
                            + mOverscanScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = mOverscanScreenTop
                            + mOverscanScreenHeight;
                } else if (attrs.type == TYPE_BOOT_PROGRESS) {
                    // Boot progress screen always covers entire display.
                    pf.left = df.left = of.left = cf.left = mOverscanScreenLeft;
                    pf.top = df.top = of.top = cf.top = mOverscanScreenTop;
                    pf.right = df.right = of.right = cf.right = mOverscanScreenLeft
                            + mOverscanScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = mOverscanScreenTop
                            + mOverscanScreenHeight;
                } else if (attrs.type == TYPE_WALLPAPER) {
                    // The wallpaper also has Real Ultimate Power, but we want to tell
                    // it about the overscan area.
                    pf.left = df.left = mOverscanScreenLeft;
                    pf.top = df.top = mOverscanScreenTop;
                    pf.right = df.right = mOverscanScreenLeft + mOverscanScreenWidth;
                    pf.bottom = df.bottom = mOverscanScreenTop + mOverscanScreenHeight;
                    of.left = cf.left = mUnrestrictedScreenLeft;
                    of.top = cf.top = mUnrestrictedScreenTop;
                    of.right = cf.right = mUnrestrictedScreenLeft + mUnrestrictedScreenWidth;
                    of.bottom = cf.bottom = mUnrestrictedScreenTop + mUnrestrictedScreenHeight;
                } else if ((fl & FLAG_LAYOUT_IN_OVERSCAN) != 0
                        && attrs.type >= WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW
                        && attrs.type <= WindowManager.LayoutParams.LAST_SUB_WINDOW) {
                    // Asking to layout into the overscan region, so give it that pure
                    // unrestricted area.
                    pf.left = df.left = of.left = cf.left = mOverscanScreenLeft;
                    pf.top = df.top = of.top = cf.top = mOverscanScreenTop;
                    pf.right = df.right = of.right = cf.right
                            = mOverscanScreenLeft + mOverscanScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom
                            = mOverscanScreenTop + mOverscanScreenHeight;
                } else if (canHideNavigationBar()
                        && (sysUiFl & View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION) != 0
                        && (attrs.type == TYPE_STATUS_BAR
                            || attrs.type == TYPE_TOAST
                            || attrs.type == TYPE_VOICE_INTERACTION_STARTING
                            || (attrs.type >= WindowManager.LayoutParams.FIRST_APPLICATION_WINDOW
                            && attrs.type <= WindowManager.LayoutParams.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.
                    pf.left = df.left = of.left = cf.left = mUnrestrictedScreenLeft;
                    pf.top = df.top = of.top = cf.top = mUnrestrictedScreenTop;
                    pf.right = df.right = of.right = cf.right = mUnrestrictedScreenLeft
                            + mUnrestrictedScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = mUnrestrictedScreenTop
                            + mUnrestrictedScreenHeight;
                } else {
                    pf.left = df.left = of.left = cf.left = mRestrictedScreenLeft;
                    pf.top = df.top = of.top = cf.top = mRestrictedScreenTop;
                    pf.right = df.right = of.right = cf.right = mRestrictedScreenLeft
                            + mRestrictedScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = mRestrictedScreenTop
                            + mRestrictedScreenHeight;
                }

                applyStableConstraints(sysUiFl, fl, cf);

                if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                    vf.left = mCurLeft;
                    vf.top = mCurTop;
                    vf.right = mCurRight;
                    vf.bottom = mCurBottom;
                } 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);
            } 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 (attrs.type == TYPE_STATUS_BAR_PANEL || attrs.type == TYPE_VOLUME_OVERLAY) {
                    // Status bar panels and the volume dialog 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.
                    pf.left = df.left = of.left = cf.left = mRestrictedScreenLeft;
                    pf.top = df.top = of.top = cf.top = mRestrictedScreenTop;
                    pf.right = df.right = of.right = cf.right = mRestrictedScreenLeft
                            + mRestrictedScreenWidth;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = mRestrictedScreenTop
                            + mRestrictedScreenHeight;
                } else if (attrs.type == TYPE_TOAST || attrs.type == TYPE_SYSTEM_ALERT) {
                    // These dialogs are stable to interim decor changes.
                    pf.left = df.left = of.left = cf.left = mStableLeft;
                    pf.top = df.top = of.top = cf.top = mStableTop;
                    pf.right = df.right = of.right = cf.right = mStableRight;
                    pf.bottom = df.bottom = of.bottom = cf.bottom = mStableBottom;
                } else {
                    pf.left = mContentLeft;
                    pf.top = mContentTop;
                    pf.right = mContentRight;
                    pf.bottom = mContentBottom;
                    if (win.isVoiceInteraction()) {
                        df.left = of.left = cf.left = mVoiceContentLeft;
                        df.top = of.top = cf.top = mVoiceContentTop;
                        df.right = of.right = cf.right = mVoiceContentRight;
                        df.bottom = of.bottom = cf.bottom = mVoiceContentBottom;
                    } else if (adjust != SOFT_INPUT_ADJUST_RESIZE) {
                        df.left = of.left = cf.left = mDockLeft;
                        df.top = of.top = cf.top = mDockTop;
                        df.right = of.right = cf.right = mDockRight;
                        df.bottom = of.bottom = cf.bottom = mDockBottom;
                    } else {
                        df.left = of.left = cf.left = mContentLeft;
                        df.top = of.top = cf.top = mContentTop;
                        df.right = of.right = cf.right = mContentRight;
                        df.bottom = of.bottom = cf.bottom = mContentBottom;
                    }
                    if (adjust != SOFT_INPUT_ADJUST_NOTHING) {
                        vf.left = mCurLeft;
                        vf.top = mCurTop;
                        vf.right = mCurRight;
                        vf.bottom = mCurBottom;
                    } else {
                        vf.set(cf);
                    }
                }
            }
        }

        // TYPE_SYSTEM_ERROR is above the NavigationBar so it can't be allowed to extend over it.
        if ((fl & FLAG_LAYOUT_NO_LIMITS) != 0 && attrs.type != TYPE_SYSTEM_ERROR) {
            df.left = df.top = -10000;
            df.right = df.bottom = 10000;
            if (attrs.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 = attrs.type == TYPE_WALLPAPER
                || (fl & (WindowManager.LayoutParams.FLAG_FULLSCREEN
                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN)) != 0;
        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 = Surface.ROTATION_0;
                try {
                    rotation = mWindowManager.getRotation();
                } catch (RemoteException e) {
                }
                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=" + attrs.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);

        // Dock windows carve out the bottom of the screen, so normal windows
        // can't appear underneath them.
        if (attrs.type == TYPE_INPUT_METHOD && win.isVisibleOrBehindKeyguardLw()
                && !win.getGivenInsetsPendingLw()) {
            setLastInputMethodWindowLw(null, null);
            offsetInputMethodWindowLw(win);
        }
        if (attrs.type == TYPE_VOICE_INTERACTION && win.isVisibleOrBehindKeyguardLw()
                && !win.getGivenInsetsPendingLw()) {
            offsetVoiceInputWindowLw(win);
        }
    }

    private void offsetInputMethodWindowLw(WindowState win) {
        int top = Math.max(win.getDisplayFrameLw().top, win.getContentFrameLw().top);
        top += win.getGivenContentInsetsLw().top;
        if (mContentBottom > top) {
            mContentBottom = top;
        }
        if (mVoiceContentBottom > top) {
            mVoiceContentBottom = top;
        }
        top = win.getVisibleFrameLw().top;
        top += win.getGivenVisibleInsetsLw().top;
        if (mCurBottom > top) {
            mCurBottom = top;
        }
        if (DEBUG_LAYOUT) Slog.v(TAG, "Input method: mDockBottom="
                + mDockBottom + " mContentBottom="
                + mContentBottom + " mCurBottom=" + mCurBottom);
    }

    private void offsetVoiceInputWindowLw(WindowState win) {
        int top = Math.max(win.getDisplayFrameLw().top, win.getContentFrameLw().top);
        top += win.getGivenContentInsetsLw().top;
        if (mVoiceContentBottom > top) {
            mVoiceContentBottom = top;
        }
    }

    /** {@inheritDoc} */
    @Override
    public void finishLayoutLw() {
        return;
    }

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

        mHideLockScreen = false;
        mAllowLockscreenWhenOn = false;
        mDismissKeyguard = DISMISS_KEYGUARD_NONE;
        mShowingLockscreen = false;
        mShowingDream = false;
        mWinShowWhenLocked = null;
        mKeyguardSecure = isKeyguardSecure();
        mKeyguardSecureIncludingHidden = mKeyguardSecure
                && (mKeyguardDelegate != null && mKeyguardDelegate.isShowing());
    }

    /** {@inheritDoc} */
    @Override
    public void applyPostLayoutPolicyLw(WindowState win, WindowManager.LayoutParams attrs) {
        if (DEBUG_LAYOUT) Slog.i(TAG, "Win " + win + ": isVisibleOrBehindKeyguardLw="
                + win.isVisibleOrBehindKeyguardLw());
        final int fl = PolicyControl.getWindowFlags(win, attrs);
        if (mTopFullscreenOpaqueWindowState == null
                && win.isVisibleLw() && 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 boolean showWhenLocked = (fl & FLAG_SHOW_WHEN_LOCKED) != 0;
        final boolean dismissKeyguard = (fl & FLAG_DISMISS_KEYGUARD) != 0;

        if (mTopFullscreenOpaqueWindowState == null &&
                win.isVisibleOrBehindKeyguardLw() && !win.isGoneForLayoutLw()) {
            if ((fl & FLAG_FORCE_NOT_FULLSCREEN) != 0) {
                if ((attrs.privateFlags & PRIVATE_FLAG_KEYGUARD) != 0) {
                    mForceStatusBarFromKeyguard = true;
                } else {
                    mForceStatusBar = true;
                }
            }
            if ((attrs.privateFlags & PRIVATE_FLAG_KEYGUARD) != 0) {
                mShowingLockscreen = 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;
                }
            }

            if (appWindow) {
                final IApplicationToken appToken = win.getAppToken();
                if (showWhenLocked) {
                    // Remove any previous windows with the same appToken.
                    mAppsToBeHidden.remove(appToken);
                    mAppsThatDismissKeyguard.remove(appToken);
                    if (mAppsToBeHidden.isEmpty()) {
                        if (dismissKeyguard && !mKeyguardSecure) {
                            mAppsThatDismissKeyguard.add(appToken);
                        } else {
                            mWinShowWhenLocked = win;
                            mHideLockScreen = true;
                            mForceStatusBarFromKeyguard = false;
                        }
                    }
                } else if (dismissKeyguard) {
                    if (mKeyguardSecure) {
                        mAppsToBeHidden.add(appToken);
                    } else {
                        mAppsToBeHidden.remove(appToken);
                    }
                    mAppsThatDismissKeyguard.add(appToken);
                } else {
                    mAppsToBeHidden.add(appToken);
                }
                if (attrs.x == 0 && attrs.y == 0
                        && attrs.width == WindowManager.LayoutParams.MATCH_PARENT
                        && attrs.height == WindowManager.LayoutParams.MATCH_PARENT) {
                    if (DEBUG_LAYOUT) Slog.v(TAG, "Fullscreen window: " + win);
                    mTopFullscreenOpaqueWindowState = win;
                    if (mTopFullscreenOpaqueOrDimmingWindowState == null) {
                        mTopFullscreenOpaqueOrDimmingWindowState = win;
                    }
                    if (!mAppsThatDismissKeyguard.isEmpty() &&
                            mDismissKeyguard == DISMISS_KEYGUARD_NONE) {
                        if (DEBUG_LAYOUT) Slog.v(TAG,
                                "Setting mDismissKeyguard true by win " + win);
                        mDismissKeyguard = (mWinDismissingKeyguard == win
                                && mSecureDismissingKeyguard == mKeyguardSecure)
                                ? DISMISS_KEYGUARD_CONTINUE : DISMISS_KEYGUARD_START;
                        mWinDismissingKeyguard = win;
                        mSecureDismissingKeyguard = mKeyguardSecure;
                        mForceStatusBarFromKeyguard = mShowingLockscreen && mKeyguardSecure;
                    } else if (mAppsToBeHidden.isEmpty() && showWhenLocked) {
                        if (DEBUG_LAYOUT) Slog.v(TAG,
                                "Setting mHideLockScreen to true by win " + win);
                        mHideLockScreen = true;
                        mForceStatusBarFromKeyguard = false;
                    }
                    if ((fl & FLAG_ALLOW_LOCK_WHILE_SCREEN_ON) != 0) {
                        mAllowLockscreenWhenOn = true;
                    }
                }

                if (mWinShowWhenLocked != null &&
                        mWinShowWhenLocked.getAppToken() != win.getAppToken() &&
                        (attrs.flags & FLAG_SHOW_WHEN_LOCKED) == 0) {
                    win.hideLw(false);
                }
            }
        } else if (mTopFullscreenOpaqueWindowState == null && mWinShowWhenLocked == null) {
            // No TopFullscreenOpaqueWindow is showing, but we found a SHOW_WHEN_LOCKED window
            // that is being hidden in an animation - keep the
            // keyguard hidden until the new window shows up and
            // we know whether to show the keyguard or not.
            if (win.isAnimatingLw() && appWindow && showWhenLocked && mKeyguardHidden) {
                mHideLockScreen = true;
                mWinShowWhenLocked = win;
            }
        }
        if (mTopFullscreenOpaqueOrDimmingWindowState == null
                && win.isVisibleOrBehindKeyguardLw() && !win.isGoneForLayoutLw()
                && win.isDimming()) {
            mTopFullscreenOpaqueOrDimmingWindowState = win;
        }
    }

    /** {@inheritDoc} */
    @Override
    public int finishPostLayoutPolicyLw() {
        if (mWinShowWhenLocked != null && mTopFullscreenOpaqueWindowState != null &&
                mWinShowWhenLocked.getAppToken() != mTopFullscreenOpaqueWindowState.getAppToken()
                && isKeyguardLocked()) {
            // A dialog is dismissing the keyguard. Put the wallpaper behind it and hide the
            // fullscreen window.
            // TODO: Make sure FLAG_SHOW_WALLPAPER is restored when dialog is dismissed. Or not.
            mWinShowWhenLocked.getAttrs().flags |= FLAG_SHOW_WALLPAPER;
            mTopFullscreenOpaqueWindowState.hideLw(false);
            mTopFullscreenOpaqueWindowState = mWinShowWhenLocked;
        }

        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 = mShowingLockscreen;
            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 */);
            }
            if (mForceStatusBar || mForceStatusBarFromKeyguard || mForceStatusBarTransparent) {
                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 && mStatusBarController.isTransientShowing()) {
                    mStatusBarController.updateVisibilityLw(false /*transientAllowed*/,
                            mLastSystemUiFlags, mLastSystemUiFlags);
                }
            } else if (mTopFullscreenOpaqueWindowState != null) {
                final int fl = PolicyControl.getWindowFlags(null, lp);
                if (localLOGV) {
                    Slog.d(TAG, "frame: " + mTopFullscreenOpaqueWindowState.getFrameLw()
                            + " shown frame: " + mTopFullscreenOpaqueWindowState.getShownFrameLw());
                    Slog.d(TAG, "attr: " + mTopFullscreenOpaqueWindowState.getAttrs()
                            + " lp.flags=0x" + Integer.toHexString(fl));
                }
                topIsFullscreen = (fl & WindowManager.LayoutParams.FLAG_FULLSCREEN) != 0
                        || (mLastSystemUiFlags & View.SYSTEM_UI_FLAG_FULLSCREEN) != 0;
                // 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) {
                    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;
                    }
                }
            }
        }

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

        // Hide the key guard if a visible window explicitly specifies that it wants to be
        // displayed when the screen is locked.
        if (mKeyguardDelegate != null && mStatusBar != null) {
            if (localLOGV) Slog.v(TAG, "finishPostLayoutPolicyLw: mHideKeyguard="
                    + mHideLockScreen);
            if (mDismissKeyguard != DISMISS_KEYGUARD_NONE && !mKeyguardSecure) {
                mKeyguardHidden = true;
                if (setKeyguardOccludedLw(true)) {
                    changes |= FINISH_LAYOUT_REDO_LAYOUT
                            | FINISH_LAYOUT_REDO_CONFIG
                            | FINISH_LAYOUT_REDO_WALLPAPER;
                }
                if (mKeyguardDelegate.isShowing()) {
                    mHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            mKeyguardDelegate.keyguardDone(false, false);
                        }
                    });
                }
            } else if (mHideLockScreen) {
                mKeyguardHidden = true;
                mWinDismissingKeyguard = null;
                if (setKeyguardOccludedLw(true)) {
                    changes |= FINISH_LAYOUT_REDO_LAYOUT
                            | FINISH_LAYOUT_REDO_CONFIG
                            | FINISH_LAYOUT_REDO_WALLPAPER;
                }
            } else if (mDismissKeyguard != DISMISS_KEYGUARD_NONE) {
                mKeyguardHidden = false;
                if (setKeyguardOccludedLw(false)) {
                    changes |= FINISH_LAYOUT_REDO_LAYOUT
                            | FINISH_LAYOUT_REDO_CONFIG
                            | FINISH_LAYOUT_REDO_WALLPAPER;
                }
                if (mDismissKeyguard == DISMISS_KEYGUARD_START) {
                    // Only launch the next keyguard unlock window once per window.
                    mHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            mKeyguardDelegate.dismiss();
                        }
                    });
                }
            } else {
                mWinDismissingKeyguard = null;
                mSecureDismissingKeyguard = false;
                mKeyguardHidden = false;
                if (setKeyguardOccludedLw(false)) {
                    changes |= FINISH_LAYOUT_REDO_LAYOUT
                            | FINISH_LAYOUT_REDO_CONFIG
                            | FINISH_LAYOUT_REDO_WALLPAPER;
                }
            }
        }

        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;
        }

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

    /**
     * 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 wasOccluded = mKeyguardOccluded;
        boolean showing = mKeyguardDelegate.isShowing();
        if (wasOccluded && !isOccluded && showing) {
            mKeyguardOccluded = false;
            mKeyguardDelegate.setOccluded(false);
            mStatusBar.getAttrs().privateFlags |= PRIVATE_FLAG_KEYGUARD;
            mStatusBar.getAttrs().flags |= FLAG_SHOW_WALLPAPER;
            return true;
        } else if (!wasOccluded && isOccluded && showing) {
            mKeyguardOccluded = true;
            mKeyguardDelegate.setOccluded(true);
            mStatusBar.getAttrs().privateFlags &= ~PRIVATE_FLAG_KEYGUARD;
            mStatusBar.getAttrs().flags &= ~FLAG_SHOW_WALLPAPER;
            return true;
        } else {
            return false;
        }
    }

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

    @Override
    public boolean allowAppAnimationsLw() {
        if (isStatusBarKeyguard() || mShowingDream) {
            // If keyguard or dreams is currently visible, no reason to animate behind it.
            return false;
        }
        return true;
    }

    @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);
        } 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);
            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() {
        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);
    }

    final Object mScreenshotLock = new Object();
    ServiceConnection mScreenshotConnection = null;

    final Runnable mScreenshotTimeout = new Runnable() {
        @Override public void run() {
            synchronized (mScreenshotLock) {
                if (mScreenshotConnection != null) {
                    mContext.unbindService(mScreenshotConnection);
                    mScreenshotConnection = null;
                }
            }
        }
    };

    // Assume this is called from the Handler thread.
    private void takeScreenshot() {
        synchronized (mScreenshotLock) {
            if (mScreenshotConnection != null) {
                return;
            }
            ComponentName cn = new ComponentName("com.android.systemui",
                    "com.android.systemui.screenshot.TakeScreenshotService");
            Intent intent = new Intent();
            intent.setComponent(cn);
            ServiceConnection conn = new ServiceConnection() {
                @Override
                public void onServiceConnected(ComponentName name, IBinder service) {
                    synchronized (mScreenshotLock) {
                        if (mScreenshotConnection != this) {
                            return;
                        }
                        Messenger messenger = new Messenger(service);
                        Message msg = Message.obtain(null, 1);
                        final ServiceConnection myConn = this;
                        Handler h = new Handler(mHandler.getLooper()) {
                            @Override
                            public void handleMessage(Message msg) {
                                synchronized (mScreenshotLock) {
                                    if (mScreenshotConnection == myConn) {
                                        mContext.unbindService(mScreenshotConnection);
                                        mScreenshotConnection = null;
                                        mHandler.removeCallbacks(mScreenshotTimeout);
                                    }
                                }
                            }
                        };
                        msg.replyTo = new Messenger(h);
                        msg.arg1 = msg.arg2 = 0;
                        if (mStatusBar != null && mStatusBar.isVisibleLw())
                            msg.arg1 = 1;
                        if (mNavigationBar != null && mNavigationBar.isVisibleLw())
                            msg.arg2 = 1;
                        try {
                            messenger.send(msg);
                        } catch (RemoteException e) {
                        }
                    }
                }
                @Override
                public void onServiceDisconnected(ComponentName name) {}
            };
            if (mContext.bindServiceAsUser(
                    intent, conn, Context.BIND_AUTO_CREATE, UserHandle.CURRENT)) {
                mScreenshotConnection = conn;
                mHandler.postDelayed(mScreenshotTimeout, 10000);
            }
        }
    }

    /** {@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;
        } else if (!interactive && shouldDispatchInputWhenNonInteractive()) {
            // 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;
        } 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;
            }
        }

        // 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);
            }
            return result;
        }

        boolean useHapticFeedback = down
                && (policyFlags & WindowManagerPolicy.FLAG_VIRTUAL) != 0
                && event.getRepeatCount() == 0;

        // Handle special keys.
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_DOWN:
            case KeyEvent.KEYCODE_VOLUME_UP:
            case KeyEvent.KEYCODE_VOLUME_MUTE: {
                if (mUseTvRouting) {
                    // On TVs volume keys never go to the foreground app
                    result &= ~ACTION_PASS_TO_USER;
                }
                if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
                    if (down) {
                        if (interactive && !mScreenshotChordVolumeDownKeyTriggered
                                && (event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
                            mScreenshotChordVolumeDownKeyTriggered = true;
                            mScreenshotChordVolumeDownKeyTime = event.getDownTime();
                            mScreenshotChordVolumeDownKeyConsumed = false;
                            cancelPendingPowerKeyAction();
                            interceptScreenshotChord();
                        }
                    } else {
                        mScreenshotChordVolumeDownKeyTriggered = false;
                        cancelPendingScreenshotChordAction();
                    }
                } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
                    if (down) {
                        if (interactive && !mScreenshotChordVolumeUpKeyTriggered
                                && (event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
                            mScreenshotChordVolumeUpKeyTriggered = true;
                            cancelPendingPowerKeyAction();
                            cancelPendingScreenshotChordAction();
                        }
                    } else {
                        mScreenshotChordVolumeUpKeyTriggered = false;
                        cancelPendingScreenshotChordAction();
                    }
                }
                if (down) {
                    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;
                        }
                        if (telecomManager.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, false);
                            break;
                        }
                    }

                    if ((result & ACTION_PASS_TO_USER) == 0) {
                        if (mUseTvRouting) {
                            dispatchDirectAudioEvent(event);
                        } else {
                            // 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, true);
                        }
                        break;
                    }
                }
                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) {
                                mPowerManager.goToSleep(event.getEventTime(),
                                        PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 0);
                                isWakeKey = false;
                            }
                        }
                    }
                }
                break;
            }

            case KeyEvent.KEYCODE_POWER: {
                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_SLEEP: {
                result &= ~ACTION_PASS_TO_USER;
                isWakeKey = false;
                if (!mPowerManager.isInteractive()) {
                    useHapticFeedback = false; // suppress feedback if already non-interactive
                }
                if (down) {
                    sleepPress(event.getEventTime());
                } else {
                    sleepRelease(event.getEventTime());
                }
                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_VOICE_ASSIST: {
                // Only do this if we would otherwise not pass it to the user. In that case,
                // interceptKeyBeforeDispatching would apply a similar but different policy in
                // order to invoke voice assist actions. Note that we need to make a copy of the
                // key event here because the original key event will be recycled when we return.
                if ((result & ACTION_PASS_TO_USER) == 0 && !down) {
                    mBroadcastWakeLock.acquire();
                    Message msg = mHandler.obtainMessage(MSG_LAUNCH_VOICE_ASSIST_WITH_WAKE_LOCK,
                            keyguardActive ? 1 : 0, 0);
                    msg.setAsynchronous(true);
                    msg.sendToTarget();
                }
            }
        }

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

        if (isWakeKey) {
            wakeUp(event.getEventTime(), mAllowTheaterModeWakeFromKey);
        }

        return result;
    }

    /**
     * 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)) {
                return 0;
            }
        }

        if (shouldDispatchInputWhenNonInteractive()) {
            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);
        }

        return 0;
    }

    private boolean shouldDispatchInputWhenNonInteractive() {
        // Send events to keyguard while the screen is on.
        if (isKeyguardShowingAndNotOccluded() && mDisplay != null
                && mDisplay.getState() != Display.STATE_OFF) {
            return true;
        }

        // 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 (RemoteException 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 (RemoteException 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 (RemoteException 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 (ActivityManagerNative.isSystemReady()) {
            MediaSessionLegacyHelper.getHelper(mContext).sendMediaButtonEvent(event, true);
        }
    }

    void launchVoiceAssistWithWakeLock(boolean keyguardActive) {
        IDeviceIdleController dic = IDeviceIdleController.Stub.asInterface(
                ServiceManager.getService(Context.DEVICE_IDLE_CONTROLLER));
        if (dic != null) {
            try {
                dic.exitIdle("voice-search");
            } catch (RemoteException e) {
            }
        }
        Intent voiceIntent =
            new Intent(RecognizerIntent.ACTION_VOICE_SEARCH_HANDS_FREE);
        voiceIntent.putExtra(RecognizerIntent.EXTRA_SECURE, keyguardActive);
        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();
                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();
            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 + ")");
        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 + ")");

        // 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;
            mKeyguardDrawComplete = false;
            updateWakeGestureListenerLp();
            updateOrientationListenerLp();
            updateLockScreenTimeout();
        }
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.onFinishedGoingToSleep(why);
        }
    }

    // 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;
            mKeyguardDrawComplete = false;
            if (mKeyguardDelegate != null) {
                mHandler.removeMessages(MSG_KEYGUARD_DRAWN_TIMEOUT);
                mHandler.sendEmptyMessageDelayed(MSG_KEYGUARD_DRAWN_TIMEOUT, 1000);
            }

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

        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.onStartedWakingUp(mKeyguardDelegateCallback);
            // ... eventually calls finishKeyguardDrawn
        } else {
            if (DEBUG_WAKEUP) Slog.d(TAG, "null mKeyguardDelegate: setting mKeyguardDrawComplete.");
            finishKeyguardDrawn();
        }
    }

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

    private void wakeUpFromPowerKey(long eventTime) {
        wakeUp(eventTime, mAllowTheaterModeWakeFromPowerKey);
    }

    private boolean wakeUp(long wakeTime, boolean wakeInTheaterMode) {
        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);
        return true;
    }

    private void finishKeyguardDrawn() {
        synchronized (mLock) {
            if (!mAwake || 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);
            }
        }

        finishScreenTurningOn();
    }

    // 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;
            mWindowManagerDrawComplete = false;
            mScreenOnListener = null;
            updateOrientationListenerLp();
        }
    }

    // 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;
            mWindowManagerDrawComplete = false;
            mScreenOnListener = screenOnListener;
        }

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

    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() {
        return mScreenOnFully;
    }

    /** {@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);
        }
    }

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

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

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

    /** {@inheritDoc} */
    @Override
    public boolean isKeyguardShowingOrOccluded() {
        return mKeyguardDelegate == null ? false : mKeyguardDelegate.isShowing();
    }

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

    @Override
    public void dismissKeyguardLw() {
        if (mKeyguardDelegate != null && mKeyguardDelegate.isShowing()) {
            if (DEBUG_KEYGUARD) Slog.d(TAG, "PWM.dismissKeyguardLw");
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    // ask the keyguard to prompt the user to authenticate if necessary
                    mKeyguardDelegate.dismiss();
                }
            });
        }
    }

    public void notifyActivityDrawnForKeyguardLw() {
        if (mKeyguardDelegate != null) {
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    mKeyguardDelegate.onActivityDrawn();
                }
            });
        }
    }

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

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

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

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

    @Override
    public int rotationForOrientationLw(int orientation, int lastRotation) {
        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 (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 (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);
    }

    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;
        performHapticFeedbackLw(null, safeMode
                ? HapticFeedbackConstants.SAFE_MODE_ENABLED
                : HapticFeedbackConstants.SAFE_MODE_DISABLED, true);
    }

    static long[] getLongIntArray(Resources r, int resid) {
        int[] ar = r.getIntArray(resid);
        if (ar == null) {
            return null;
        }
        long[] out = new long[ar.length];
        for (int i=0; i<ar.length; i++) {
            out[i] = ar[i];
        }
        return out;
    }

    /** {@inheritDoc} */
    @Override
    public void systemReady() {
        mKeyguardDelegate = new KeyguardServiceDelegate(mContext);
        mKeyguardDelegate.onSystemReady();

        readCameraLensCoverState();
        updateUiMode();
        synchronized (mLock) {
            updateOrientationListenerLp();
            mSystemReady = true;
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    updateSettings();
                }
            });
        }
    }

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

    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(
                            PackageManager.FEATURE_WATCH)) {
                        theme = com.android.internal.R.style.Theme_Micro_Dialog_Alert;
                    } else if (mContext.getPackageManager().hasSystemFeature(
                            PackageManager.FEATURE_TELEVISION)) {
                        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);
    }

    /** {@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);
            }
        }
    }

    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());
            if (mLockScreenTimerActive != enable) {
                if (enable) {
                    if (localLOGV) Log.v(TAG, "setting lockscreen timer");
                    mHandler.postDelayed(mScreenLockTimeout, mLockScreenTimeout);
                } else {
                    if (localLOGV) Log.v(TAG, "clearing lockscreen timer");
                    mHandler.removeCallbacks(mScreenLockTimeout);
                }
                mLockScreenTimerActive = enable;
            }
        }
    }

    private void updateDreamingSleepToken(boolean acquire) {
        if (acquire) {
            if (mDreamingSleepToken == null) {
                mDreamingSleepToken = mActivityManagerInternal.acquireSleepToken("Dream");
            }
        } else {
            if (mDreamingSleepToken != null) {
                mDreamingSleepToken.release();
                mDreamingSleepToken = null;
            }
        }
    }

    private void updateScreenOffSleepToken(boolean acquire) {
        if (acquire) {
            if (mScreenOffSleepToken == null) {
                mScreenOffSleepToken = mActivityManagerInternal.acquireSleepToken("ScreenOff");
            }
        } 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) {
            mPowerManager.goToSleep(SystemClock.uptimeMillis(),
                    PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH,
                    PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE);
        }

        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 ENABLE_CAR_DOCK_HOME_CAPTURE 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 (ENABLE_CAR_DOCK_HOME_CAPTURE) {
                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;
        }

        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) {
        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.
            try {
                ActivityManagerNative.getDefault().stopAppSwitches();
            } catch (RemoteException e) {
            }
            sendCloseSystemWindows();
            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 {
                    ActivityManagerNative.getDefault().stopAppSwitches();
                    sendCloseSystemWindows();
                    Intent dock = createHomeDockIntent();
                    if (dock != null) {
                        int result = ActivityManagerNative.getDefault()
                                .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 = ActivityManagerNative.getDefault()
                        .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 void performAuditoryFeedbackForAccessibilityIfNeed() {
        if (!isGlobalAccessibilityGestureEnabled()) {
            return;
        }
        AudioManager audioManager = (AudioManager) mContext.getSystemService(
                Context.AUDIO_SERVICE);
        if (audioManager.isSilentMode()) {
            return;
        }
        Ringtone ringTone = RingtoneManager.getRingtone(mContext,
                Settings.System.DEFAULT_NOTIFICATION_URI);
        ringTone.setStreamType(AudioManager.STREAM_MUSIC);
        ringTone.play();
    }

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

    private boolean isGlobalAccessibilityGestureEnabled() {
        return Settings.Global.getInt(mContext.getContentResolver(),
                Settings.Global.ENABLE_ACCESSIBILITY_GLOBAL_GESTURE_ENABLED, 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;
        }
        long[] pattern = null;
        switch (effectId) {
            case HapticFeedbackConstants.LONG_PRESS:
                pattern = mLongPressVibePattern;
                break;
            case HapticFeedbackConstants.VIRTUAL_KEY:
                pattern = mVirtualKeyVibePattern;
                break;
            case HapticFeedbackConstants.KEYBOARD_TAP:
                pattern = mKeyboardTapVibePattern;
                break;
            case HapticFeedbackConstants.CLOCK_TICK:
                pattern = mClockTickVibePattern;
                break;
            case HapticFeedbackConstants.CALENDAR_DATE:
                pattern = mCalendarDateVibePattern;
                break;
            case HapticFeedbackConstants.SAFE_MODE_DISABLED:
                pattern = mSafeModeDisabledVibePattern;
                break;
            case HapticFeedbackConstants.SAFE_MODE_ENABLED:
                pattern = mSafeModeEnabledVibePattern;
                break;
            case HapticFeedbackConstants.CONTEXT_CLICK:
                pattern = mContextClickVibePattern;
                break;
            default:
                return false;
        }
        int owningUid;
        String owningPackage;
        if (win != null) {
            owningUid = win.getOwningUid();
            owningPackage = win.getOwningPackage();
        } else {
            owningUid = android.os.Process.myUid();
            owningPackage = mContext.getOpPackageName();
        }
        if (pattern.length == 1) {
            // One-shot vibration
            mVibrator.vibrate(owningUid, owningPackage, pattern[0], VIBRATION_ATTRIBUTES);
        } else {
            // Pattern vibration
            mVibrator.vibrate(owningUid, owningPackage, pattern, -1, VIBRATION_ATTRIBUTES);
        }
        return true;
    }

    @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.
        final WindowState win = mFocusedWindow != null ? mFocusedWindow
                : mTopFullscreenOpaqueWindowState;
        if (win == null) {
            return 0;
        }
        if ((win.getAttrs().privateFlags & PRIVATE_FLAG_KEYGUARD) != 0 && mHideLockScreen == true) {
            // 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);
        }
        tmpVisibility = updateLightStatusBarLw(tmpVisibility);
        final int visibility = updateSystemBarsLw(win, mLastSystemUiFlags, tmpVisibility);
        final int diff = visibility ^ mLastSystemUiFlags;
        final boolean needsMenu = win.getNeedsMenuLw(mTopFullscreenOpaqueWindowState);
        if (diff == 0 && mLastFocusNeedsMenu == needsMenu
                && mFocusedApp == win.getAppToken()) {
            return 0;
        }
        mLastSystemUiFlags = visibility;
        mLastFocusNeedsMenu = needsMenu;
        mFocusedApp = win.getAppToken();
        mHandler.post(new Runnable() {
                @Override
                public void run() {
                    try {
                        IStatusBarService statusbar = getStatusBarService();
                        if (statusbar != null) {
                            statusbar.setSystemUiVisibility(visibility, 0xffffffff, win.toString());
                            statusbar.topAppWindowChanged(needsMenu);
                        }
                    } catch (RemoteException e) {
                        // re-acquire status bar service next time it is needed.
                        mStatusBarService = null;
                    }
                }
            });
        return diff;
    }

    private int updateLightStatusBarLw(int vis) {
        WindowState statusColorWin = isStatusBarKeyguard() && !mHideLockScreen
                ? mStatusBar
                : mTopFullscreenOpaqueOrDimmingWindowState;

        if (statusColorWin != null) {
            if (statusColorWin == mTopFullscreenOpaqueWindowState) {
                // 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;
    }

    private int updateSystemBarsLw(WindowState win, int oldVis, int vis) {
        // apply translucent bar vis flags
        WindowState transWin = isStatusBarKeyguard() && !mHideLockScreen
                ? mStatusBar
                : mTopFullscreenOpaqueWindowState;
        vis = mStatusBarController.applyTranslucentFlagLw(transWin, vis, oldVis);
        vis = mNavigationBarController.applyTranslucentFlagLw(transWin, vis, oldVis);

        // 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 (mHideLockScreen) {
                flags |= View.STATUS_BAR_TRANSLUCENT | View.NAVIGATION_BAR_TRANSLUCENT;
            }
            vis = (vis & ~flags) | (oldVis & flags);
        }

        if (!areTranslucentBarsAllowed() && transWin != mStatusBar) {
            vis &= ~(View.NAVIGATION_BAR_TRANSLUCENT | View.STATUS_BAR_TRANSLUCENT
                    | View.SYSTEM_UI_TRANSPARENT);
        }

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

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

        boolean transientNavBarAllowed =
                mNavigationBar != null &&
                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();
            mNavigationBarController.showTransient();
        }

        boolean denyTransientStatus = mStatusBarController.isTransientShowRequested()
                && !transientStatusBarAllowed && hideStatusBarSysui;
        boolean denyTransientNav = mNavigationBarController.isTransientShowRequested()
                && !transientNavBarAllowed;
        if (denyTransientStatus || denyTransientNav) {
            // 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 && windowTypeToLayerLw(win.getBaseType())
                > windowTypeToLayerLw(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.immersiveModeChanged(pkg, newImmersiveMode,
                    isUserSetupComplete());
        }

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

        return vis;
    }

    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();
    }

    /**
     * @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
                && !mAccessibilityManager.isTouchExplorationEnabled();
    }

    // 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 int getInputMethodWindowVisibleHeightLw() {
        return mDockBottom - mCurBottom;
    }

    @Override
    public void setCurrentUserLw(int newUserId) {
        mCurrentUserId = newUserId;
        if (mKeyguardDelegate != null) {
            mKeyguardDelegate.setCurrentUser(newUserId);
        }
        if (mStatusBarService != null) {
            try {
                mStatusBarService.setCurrentUser(newUserId);
            } catch (RemoteException e) {
                // oh well
            }
        }
        setLastInputMethodWindowLw(null, null);
    }

    @Override
    public boolean canMagnifyWindow(int windowType) {
        switch (windowType) {
            case WindowManager.LayoutParams.TYPE_INPUT_METHOD:
            case WindowManager.LayoutParams.TYPE_INPUT_METHOD_DIALOG:
            case WindowManager.LayoutParams.TYPE_NAVIGATION_BAR:
            case WindowManager.LayoutParams.TYPE_MAGNIFICATION_OVERLAY: {
                return false;
            }
        }
        return true;
    }

    @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 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(mLidState);
                pw.print(" mLidOpenRotation="); pw.print(mLidOpenRotation);
                pw.print(" mCameraLensCoverState="); pw.print(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.println(mSupportAutoRotation);
        pw.print(prefix); pw.print("mUiMode="); pw.print(mUiMode);
                pw.print(" mDockMode="); pw.print(mDockMode);
                pw.print(" mCarDockRotation="); pw.print(mCarDockRotation);
                pw.print(" mDeskDockRotation="); pw.println(mDeskDockRotation);
        pw.print(prefix); pw.print("mUserRotationMode="); pw.print(mUserRotationMode);
                pw.print(" mUserRotation="); pw.print(mUserRotation);
                pw.print(" mAllowAllRotations="); pw.println(mAllowAllRotations);
        pw.print(prefix); pw.print("mCurrentAppOrientation="); pw.println(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(" mLidControlsSleep="); pw.println(mLidControlsSleep);
        pw.print(prefix);
                pw.print("mShortPressOnPowerBehavior="); pw.print(mShortPressOnPowerBehavior);
                pw.print(" mLongPressOnPowerBehavior="); pw.println(mLongPressOnPowerBehavior);
        pw.print(prefix);
                pw.print("mDoublePressOnPowerBehavior="); pw.print(mDoublePressOnPowerBehavior);
                pw.print(" mTriplePressOnPowerBehavior="); pw.println(mTriplePressOnPowerBehavior);
        pw.print(prefix); pw.print("mHasSoftInput="); pw.println(mHasSoftInput);
        pw.print(prefix); pw.print("mAwake="); pw.println(mAwake);
        pw.print(prefix); 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("mOrientationSensorEnabled=");
                pw.println(mOrientationSensorEnabled);
        pw.print(prefix); pw.print("mOverscanScreen=("); pw.print(mOverscanScreenLeft);
                pw.print(","); pw.print(mOverscanScreenTop);
                pw.print(") "); pw.print(mOverscanScreenWidth);
                pw.print("x"); pw.println(mOverscanScreenHeight);
        if (mOverscanLeft != 0 || mOverscanTop != 0
                || mOverscanRight != 0 || mOverscanBottom != 0) {
            pw.print(prefix); pw.print("mOverscan left="); pw.print(mOverscanLeft);
                    pw.print(" top="); pw.print(mOverscanTop);
                    pw.print(" right="); pw.print(mOverscanRight);
                    pw.print(" bottom="); pw.println(mOverscanBottom);
        }
        pw.print(prefix); pw.print("mRestrictedOverscanScreen=(");
                pw.print(mRestrictedOverscanScreenLeft);
                pw.print(","); pw.print(mRestrictedOverscanScreenTop);
                pw.print(") "); pw.print(mRestrictedOverscanScreenWidth);
                pw.print("x"); pw.println(mRestrictedOverscanScreenHeight);
        pw.print(prefix); pw.print("mUnrestrictedScreen=("); pw.print(mUnrestrictedScreenLeft);
                pw.print(","); pw.print(mUnrestrictedScreenTop);
                pw.print(") "); pw.print(mUnrestrictedScreenWidth);
                pw.print("x"); pw.println(mUnrestrictedScreenHeight);
        pw.print(prefix); pw.print("mRestrictedScreen=("); pw.print(mRestrictedScreenLeft);
                pw.print(","); pw.print(mRestrictedScreenTop);
                pw.print(") "); pw.print(mRestrictedScreenWidth);
                pw.print("x"); pw.println(mRestrictedScreenHeight);
        pw.print(prefix); pw.print("mStableFullscreen=("); pw.print(mStableFullscreenLeft);
                pw.print(","); pw.print(mStableFullscreenTop);
                pw.print(")-("); pw.print(mStableFullscreenRight);
                pw.print(","); pw.print(mStableFullscreenBottom); pw.println(")");
        pw.print(prefix); pw.print("mStable=("); pw.print(mStableLeft);
                pw.print(","); pw.print(mStableTop);
                pw.print(")-("); pw.print(mStableRight);
                pw.print(","); pw.print(mStableBottom); pw.println(")");
        pw.print(prefix); pw.print("mSystem=("); pw.print(mSystemLeft);
                pw.print(","); pw.print(mSystemTop);
                pw.print(")-("); pw.print(mSystemRight);
                pw.print(","); pw.print(mSystemBottom); pw.println(")");
        pw.print(prefix); pw.print("mCur=("); pw.print(mCurLeft);
                pw.print(","); pw.print(mCurTop);
                pw.print(")-("); pw.print(mCurRight);
                pw.print(","); pw.print(mCurBottom); pw.println(")");
        pw.print(prefix); pw.print("mContent=("); pw.print(mContentLeft);
                pw.print(","); pw.print(mContentTop);
                pw.print(")-("); pw.print(mContentRight);
                pw.print(","); pw.print(mContentBottom); pw.println(")");
        pw.print(prefix); pw.print("mVoiceContent=("); pw.print(mVoiceContentLeft);
                pw.print(","); pw.print(mVoiceContentTop);
                pw.print(")-("); pw.print(mVoiceContentRight);
                pw.print(","); pw.print(mVoiceContentBottom); pw.println(")");
        pw.print(prefix); pw.print("mDock=("); pw.print(mDockLeft);
                pw.print(","); pw.print(mDockTop);
                pw.print(")-("); pw.print(mDockRight);
                pw.print(","); pw.print(mDockBottom); pw.println(")");
        pw.print(prefix); pw.print("mDockLayer="); pw.print(mDockLayer);
                pw.print(" mStatusBarLayer="); pw.println(mStatusBarLayer);
        pw.print(prefix); pw.print("mShowingLockscreen="); pw.print(mShowingLockscreen);
                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 (mWinDismissingKeyguard != null) {
            pw.print(prefix); pw.print("mWinDismissingKeyguard=");
                    pw.println(mWinDismissingKeyguard);
        }
        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(" mHideLockScreen="); pw.println(mHideLockScreen);
        pw.print(prefix); pw.print("mForceStatusBar="); pw.print(mForceStatusBar);
                pw.print(" mForceStatusBarFromKeyguard=");
                pw.println(mForceStatusBarFromKeyguard);
        pw.print(prefix); pw.print("mDismissKeyguard="); pw.print(mDismissKeyguard);
                pw.print(" mWinDismissingKeyguard="); pw.print(mWinDismissingKeyguard);
                pw.print(" mHomePressed="); pw.println(mHomePressed);
        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("mEndcallBehavior="); pw.print(mEndcallBehavior);
                pw.print(" mIncallPowerBehavior="); pw.print(mIncallPowerBehavior);
                pw.print(" mLongPressOnHomeBehavior="); pw.println(mLongPressOnHomeBehavior);
        pw.print(prefix); pw.print("mLandscapeRotation="); pw.print(mLandscapeRotation);
                pw.print(" mSeascapeRotation="); pw.println(mSeascapeRotation);
        pw.print(prefix); pw.print("mPortraitRotation="); pw.print(mPortraitRotation);
                pw.print(" mUpsideDownRotation="); pw.println(mUpsideDownRotation);
        pw.print(prefix); pw.print("mDemoHdmiRotation="); pw.print(mDemoHdmiRotation);
                pw.print(" mDemoHdmiRotationLock="); pw.println(mDemoHdmiRotationLock);
        pw.print(prefix); pw.print("mUndockedHdmiRotation="); pw.println(mUndockedHdmiRotation);

        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);
        }
    }
}