/base/services/core/java/com/android/server/policy/PhoneWindowManager.java

模擬

在PhoneWindowManager中註冊廣播，收到廣播後執行事件

需要注意 SystemClock.uptimeMillis()去取時間，因為底層也是這樣取，不然底層有個時間校驗

 private BroadcastReceiver mKeyReceiver=new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
		int action= intent.getIntExtra("action",0);
		switch(action){
			case 0:{
				//預設保留
				/**
				long eventTime=System.currentTimeMillis();
				Log.e("currentTimeMillis",eventTime+"");
				boolean interactive=false;
				int count=1;
				wfypowerPress(eventTime,interactive,count);
				*/
				//wakeUpFromPowerKey(0);
				break;
			}
			case 1:{
				//電源鍵短按
				
				long eventTime=SystemClock.uptimeMillis();
				Log.e("currentTimeMillis",eventTime+"");
				boolean interactive=true;
				int count=1;
				wfypowerPress(eventTime,interactive,1);
				
				//long eventTime=SystemClock.uptimeMillis();
				//mPowerManager.goToSleep(eventTime,
                //            PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 1);
				break;
			}
			case 2://電源鍵長按
				wfypowerLongPress();
				break;
			case 3://home鍵短按
				wfyhandleShortPressOnHome();
				break;
		}
		
	}
   };
 

禁用

persist.fnf.powerShortDisable 

    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:
		   if(SystemProperties.getBoolean("persist.fnf.powerShortDisable", false)){
			return;
		   }
                    mPowerManager.goToSleep(eventTime,
                            PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON, 0);
                    break;
                case SHORT_PRESS_POWER_REALLY_GO_TO_SLEEP:
		
		   if(SystemProperties.getBoolean("persist.fnf.powerShortDisable", false)){
			return;
		   }

                    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:
		  if(SystemProperties.getBoolean("persist.fnf.powerShortDisable", false)){
			return;
		   }
                    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;
            }
        }
    }
 

void showGlobalActionsInternal() {
        sendCloseSystemWindows(SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS);
        if (mGlobalActions == null) {
            mGlobalActions = new GlobalActions(mContext, mWindowManagerFuncs);
        }

	final boolean keyguardShowing = isKeyguardShowingAndNotOccluded();

	if(SystemProperties.getBoolean("persist.fnf.powerLongDisable", false)){

	}else{  
          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);
        }
    }
 

音量鍵

/** {@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, "android.policy:KEY");
            }
            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(SystemProperties.getBoolean("persist.fnf.volumeDisable", false)){
                    return 0;
                }

                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, "android.policy:KEY");
        }

        return result;
    }

完整的例項

/*
 * 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.Binder;
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.PowerManagerInternal;
import android.os.Process;
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.logging.MetricsLogger;
import com.android.internal.policy.PhoneWindow;
import android.view.Surface;
import android.view.View;
import android.view.ViewConfiguration;
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.am.ActivityStackSupervisor;
import com.android.server.GestureLauncherService;
import com.android.server.LocalServices;
import com.android.server.policy.keyguard.KeyguardServiceDelegate;
import com.android.server.policy.keyguard.KeyguardServiceDelegate.DrawnListener;

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;

import android.app.DeviceManager;
/**
 * 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 = 1000;

    /**
     * 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;
    ActivityManager mActivityManager;
    ActivityManagerInternal mActivityManagerInternal;
    DreamManagerInternal mDreamManagerInternal;
    PowerManagerInternal mPowerManagerInternal;
    IStatusBarService mStatusBarService;
    boolean mPreloadedRecentApps;
    final Object mServiceAquireLock = new Object();
    Vibrator mVibrator; // Vibrator for giving feedback of orientation changes
    SearchManager mSearchManager;
    AccessibilityManager mAccessibilityManager;
    BurnInProtectionHelper mBurnInProtectionHelper;
    AppOpsManager mAppOpsManager;

    // 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 DrawnListener mKeyguardDrawnCallback = new DrawnListener() {
        @Override
        public void onDrawn() {
            if (DEBUG_WAKEUP) Slog.d(TAG, "mKeyguardDelegate.ShowListener.onDrawn.");
            mHandler.sendEmptyMessage(MSG_KEYGUARD_DRAWN_COMPLETE);
        }
    };

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

    // FIXME This state is shared between the input reader and handler thread.
    // Technically it's broken and buggy but it has been like this for many years
    // and we have not yet seen any problems.  Someday we'll rewrite this logic
    // so that only one thread is involved in handling input policy.  Unfortunately
    // it's on a critical path for power management so we can't just post the work to the
    // handler thread.  We'll need to resolve this someday by teaching the input dispatcher
    // to hold wakelocks during dispatch and eliminating the critical path.
    volatile boolean mPowerKeyHandled;
    volatile boolean 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;
    private boolean mDeferBindKeyguard;
    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;

    private int mDisplayRotation;

    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,
                            "android.policy:GESTURE");
                }
            }
        }
    }

    class MyOrientationListener extends WindowOrientationListener {
        private final Runnable mUpdateRotationRunnable = new Runnable() {
            @Override
            public void run() {
                // send interaction hint to improve redraw performance
                mPowerManagerInternal.powerHint(PowerManagerInternal.POWER_HINT_INTERACTION, 0);
                updateRotation(false);
            }
        };

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

        @Override
        public void onProposedRotationChanged(int rotation) {
            if (localLOGV) Slog.v(TAG, "onProposedRotationChanged, rotation=" + rotation);
            mHandler.post(mUpdateRotationRunnable);
        }
    }
    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();
            }
        }

        GestureLauncherService gestureService = LocalServices.getService(
                GestureLauncherService.class);
        boolean gesturedServiceIntercepted = false;
        if (gestureService != null) {
            gesturedServiceIntercepted = gestureService.interceptPowerKeyDown(event, interactive);
        }

        // 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 || gesturedServiceIntercepted;
        if (!mPowerKeyHandled) {
            if (interactive) {
                // When interactive, we're already awake.
                // Wait for a long press or for the button to be released to decide what to do.
                if (hasLongPressOnPowerBehavior()) {
                    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;