services/core/java/com/android/server/UiModeManagerService.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2008 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;

 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.ActivityManagerNative;
 import android.app.IUiModeManager;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.StatusBarManager;
 import android.app.UiModeManager;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.os.BatteryManager;
 import android.os.Binder;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.PowerManager;
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.provider.Settings;
 import android.service.dreams.Sandman;
 import android.util.Slog;

 import java.io.FileDescriptor;
 import java.io.PrintWriter;

 import com.android.internal.R;
 import com.android.internal.app.DisableCarModeActivity;
 import com.android.server.twilight.TwilightListener;
 import com.android.server.twilight.TwilightManager;
 import com.android.server.twilight.TwilightState;

 final class UiModeManagerService extends SystemService {
     private static final String TAG = UiModeManager.class.getSimpleName();
     private static final boolean LOG = false;

     // Enable launching of applications when entering the dock.
     private static final boolean ENABLE_LAUNCH_CAR_DOCK_APP = true;
     private static final boolean ENABLE_LAUNCH_DESK_DOCK_APP = true;

     final Object mLock = new Object();
     private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED;

     private int mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
     int mNightMode = UiModeManager.MODE_NIGHT_NO;

     private boolean mCarModeEnabled = false;
     private boolean mCharging = false;
     private int mDefaultUiModeType;
     private boolean mCarModeKeepsScreenOn;
     private boolean mDeskModeKeepsScreenOn;
     private boolean mTelevision;
     private boolean mWatch;
     private boolean mComputedNightMode;
     private int mCarModeEnableFlags;

     int mCurUiMode = 0;
     private int mSetUiMode = 0;
     private boolean mHoldingConfiguration = false;

     private Configuration mConfiguration = new Configuration();
     boolean mSystemReady;

     private final Handler mHandler = new Handler();

     private TwilightManager mTwilightManager;
     private NotificationManager mNotificationManager;
     private StatusBarManager mStatusBarManager;

     private PowerManager.WakeLock mWakeLock;

     public UiModeManagerService(Context context) {
         super(context);
     }

     private static Intent buildHomeIntent(String category) {
         Intent intent = new Intent(Intent.ACTION_MAIN);
         intent.addCategory(category);
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                 | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
         return intent;
     }

     // The broadcast receiver which receives the result of the ordered broadcast sent when
     // the dock state changes. The original ordered broadcast is sent with an initial result
     // code of RESULT_OK. If any of the registered broadcast receivers changes this value, e.g.,
     // to RESULT_CANCELED, then the intent to start a dock app will not be sent.
     private final BroadcastReceiver mResultReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             if (getResultCode() != Activity.RESULT_OK) {
                 if (LOG) {
                     Slog.v(TAG, "Handling broadcast result for action " + intent.getAction()
                             + ": canceled: " + getResultCode());
                 }
                 return;
             }

             final int enableFlags = intent.getIntExtra("enableFlags", 0);
             final int disableFlags = intent.getIntExtra("disableFlags", 0);
             synchronized (mLock) {
                 updateAfterBroadcastLocked(intent.getAction(), enableFlags, disableFlags);
             }
         }
     };

     private final BroadcastReceiver mDockModeReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             int state = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
                     Intent.EXTRA_DOCK_STATE_UNDOCKED);
             updateDockState(state);
         }
     };

     private final BroadcastReceiver mBatteryReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             mCharging = (intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0);
             synchronized (mLock) {
                 if (mSystemReady) {
                     updateLocked(0, 0);
                 }
             }
         }
     };

     private final TwilightListener mTwilightListener = new TwilightListener() {
         @Override
         public void onTwilightStateChanged() {
             updateTwilight();
         }
     };

     @Override
     public void onStart() {
         final Context context = getContext();
         mTwilightManager = getLocalService(TwilightManager.class);
         final PowerManager powerManager =
                 (PowerManager) context.getSystemService(Context.POWER_SERVICE);
         mWakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, TAG);

         context.registerReceiver(mDockModeReceiver,
                 new IntentFilter(Intent.ACTION_DOCK_EVENT));
         context.registerReceiver(mBatteryReceiver,
                 new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

         mConfiguration.setToDefaults();

         mDefaultUiModeType = context.getResources().getInteger(
                 com.android.internal.R.integer.config_defaultUiModeType);
         mCarModeKeepsScreenOn = (context.getResources().getInteger(
                 com.android.internal.R.integer.config_carDockKeepsScreenOn) == 1);
         mDeskModeKeepsScreenOn = (context.getResources().getInteger(
                 com.android.internal.R.integer.config_deskDockKeepsScreenOn) == 1);
         mTelevision = context.getPackageManager().hasSystemFeature(
                 PackageManager.FEATURE_TELEVISION) ||
             context.getPackageManager().hasSystemFeature(
                     PackageManager.FEATURE_LEANBACK);
         mWatch = context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH);

         mNightMode = Settings.Secure.getInt(context.getContentResolver(),
                 Settings.Secure.UI_NIGHT_MODE, UiModeManager.MODE_NIGHT_AUTO);

         mTwilightManager.registerListener(mTwilightListener, mHandler);

         publishBinderService(Context.UI_MODE_SERVICE, mService);
     }

     private final IBinder mService = new IUiModeManager.Stub() {
         @Override
         public void enableCarMode(int flags) {
             final long ident = Binder.clearCallingIdentity();
             try {
                 synchronized (mLock) {
                     setCarModeLocked(true, flags);
                     if (mSystemReady) {
                         updateLocked(flags, 0);
                     }
                 }
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public void disableCarMode(int flags) {
             final long ident = Binder.clearCallingIdentity();
             try {
                 synchronized (mLock) {
                     setCarModeLocked(false, 0);
                     if (mSystemReady) {
                         updateLocked(0, flags);
                     }
                 }
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public int getCurrentModeType() {
             final long ident = Binder.clearCallingIdentity();
             try {
                 synchronized (mLock) {
                     return mCurUiMode & Configuration.UI_MODE_TYPE_MASK;
                 }
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public void setNightMode(int mode) {
             switch (mode) {
                 case UiModeManager.MODE_NIGHT_NO:
                 case UiModeManager.MODE_NIGHT_YES:
                 case UiModeManager.MODE_NIGHT_AUTO:
                     break;
                 default:
                     throw new IllegalArgumentException("Unknown mode: " + mode);
             }

             final long ident = Binder.clearCallingIdentity();
             try {
                 synchronized (mLock) {
                     if (isDoingNightModeLocked() && mNightMode != mode) {
                         Settings.Secure.putInt(getContext().getContentResolver(),
                                 Settings.Secure.UI_NIGHT_MODE, mode);
                         mNightMode = mode;
                         updateLocked(0, 0);
                     }
                 }
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public int getNightMode() {
             synchronized (mLock) {
                 return mNightMode;
             }
         }

         @Override
         protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
             if (getContext().checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
                     != PackageManager.PERMISSION_GRANTED) {

                 pw.println("Permission Denial: can't dump uimode service from from pid="
                         + Binder.getCallingPid()
                         + ", uid=" + Binder.getCallingUid());
                 return;
             }

             dumpImpl(pw);
         }
     };

     void dumpImpl(PrintWriter pw) {
         synchronized (mLock) {
             pw.println("Current UI Mode Service state:");
             pw.print("  mDockState="); pw.print(mDockState);
                     pw.print(" mLastBroadcastState="); pw.println(mLastBroadcastState);
             pw.print("  mNightMode="); pw.print(mNightMode);
                     pw.print(" mCarModeEnabled="); pw.print(mCarModeEnabled);
                     pw.print(" mComputedNightMode="); pw.print(mComputedNightMode);
                     pw.print(" mCarModeEnableFlags="); pw.println(mCarModeEnableFlags);
             pw.print("  mCurUiMode=0x"); pw.print(Integer.toHexString(mCurUiMode));
                     pw.print(" mSetUiMode=0x"); pw.println(Integer.toHexString(mSetUiMode));
             pw.print("  mHoldingConfiguration="); pw.print(mHoldingConfiguration);
                     pw.print(" mSystemReady="); pw.println(mSystemReady);
             pw.print("  mTwilightService.getCurrentState()=");
                     pw.println(mTwilightManager.getCurrentState());
         }
     }

     @Override
     public void onBootPhase(int phase) {
         if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
             synchronized (mLock) {
                 mSystemReady = true;
                 mCarModeEnabled = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
                 updateComputedNightModeLocked();
                 updateLocked(0, 0);
             }
         }
     }

     boolean isDoingNightModeLocked() {
         return mCarModeEnabled || mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED;
     }

     void setCarModeLocked(boolean enabled, int flags) {
         if (mCarModeEnabled != enabled) {
             mCarModeEnabled = enabled;
         }
         mCarModeEnableFlags = flags;
     }

     private void updateDockState(int newState) {
         synchronized (mLock) {
             if (newState != mDockState) {
                 mDockState = newState;
                 setCarModeLocked(mDockState == Intent.EXTRA_DOCK_STATE_CAR, 0);
                 if (mSystemReady) {
                     updateLocked(UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME, 0);
                 }
             }
         }
     }

     private static boolean isDeskDockState(int state) {
         switch (state) {
             case Intent.EXTRA_DOCK_STATE_DESK:
             case Intent.EXTRA_DOCK_STATE_LE_DESK:
             case Intent.EXTRA_DOCK_STATE_HE_DESK:
                 return true;
             default:
                 return false;
         }
     }

     private void updateConfigurationLocked() {
         int uiMode = mDefaultUiModeType;
         if (mTelevision) {
             uiMode = Configuration.UI_MODE_TYPE_TELEVISION;
         } else if (mWatch) {
             uiMode = Configuration.UI_MODE_TYPE_WATCH;
         } else if (mCarModeEnabled) {
             uiMode = Configuration.UI_MODE_TYPE_CAR;
         } else if (isDeskDockState(mDockState)) {
             uiMode = Configuration.UI_MODE_TYPE_DESK;
         }
         if (mCarModeEnabled) {
             if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
                 updateComputedNightModeLocked();
                 uiMode |= mComputedNightMode ? Configuration.UI_MODE_NIGHT_YES
                         : Configuration.UI_MODE_NIGHT_NO;
             } else {
                 uiMode |= mNightMode << 4;
             }
         } else {
             // Disabling the car mode clears the night mode.
             uiMode = (uiMode & ~Configuration.UI_MODE_NIGHT_MASK) | Configuration.UI_MODE_NIGHT_NO;
         }

         if (LOG) {
             Slog.d(TAG,
                 "updateConfigurationLocked: mDockState=" + mDockState
                 + "; mCarMode=" + mCarModeEnabled
                 + "; mNightMode=" + mNightMode
                 + "; uiMode=" + uiMode);
         }

         mCurUiMode = uiMode;
         if (!mHoldingConfiguration) {
             mConfiguration.uiMode = uiMode;
         }
     }

     private void sendConfigurationLocked() {
         if (mSetUiMode != mConfiguration.uiMode) {
             mSetUiMode = mConfiguration.uiMode;

             try {
                 ActivityManagerNative.getDefault().updateConfiguration(mConfiguration);
             } catch (RemoteException e) {
                 Slog.w(TAG, "Failure communicating with activity manager", e);
             }
         }
     }

     void updateLocked(int enableFlags, int disableFlags) {
         String action = null;
         String oldAction = null;
         if (mLastBroadcastState == Intent.EXTRA_DOCK_STATE_CAR) {
             adjustStatusBarCarModeLocked();
             oldAction = UiModeManager.ACTION_EXIT_CAR_MODE;
         } else if (isDeskDockState(mLastBroadcastState)) {
             oldAction = UiModeManager.ACTION_EXIT_DESK_MODE;
         }

         if (mCarModeEnabled) {
             if (mLastBroadcastState != Intent.EXTRA_DOCK_STATE_CAR) {
                 adjustStatusBarCarModeLocked();

                 if (oldAction != null) {
                     getContext().sendBroadcastAsUser(new Intent(oldAction), UserHandle.ALL);
                 }
                 mLastBroadcastState = Intent.EXTRA_DOCK_STATE_CAR;
                 action = UiModeManager.ACTION_ENTER_CAR_MODE;
             }
         } else if (isDeskDockState(mDockState)) {
             if (!isDeskDockState(mLastBroadcastState)) {
                 if (oldAction != null) {
                     getContext().sendBroadcastAsUser(new Intent(oldAction), UserHandle.ALL);
                 }
                 mLastBroadcastState = mDockState;
                 action = UiModeManager.ACTION_ENTER_DESK_MODE;
             }
         } else {
             mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
             action = oldAction;
         }

         if (action != null) {
             if (LOG) {
                 Slog.v(TAG, String.format(
                     "updateLocked: preparing broadcast: action=%s enable=0x%08x disable=0x%08x",
                     action, enableFlags, disableFlags));
             }

             // Send the ordered broadcast; the result receiver will receive after all
             // broadcasts have been sent. If any broadcast receiver changes the result
             // code from the initial value of RESULT_OK, then the result receiver will
             // not launch the corresponding dock application. This gives apps a chance
             // to override the behavior and stay in their app even when the device is
             // placed into a dock.
             Intent intent = new Intent(action);
             intent.putExtra("enableFlags", enableFlags);
             intent.putExtra("disableFlags", disableFlags);
             getContext().sendOrderedBroadcastAsUser(intent, UserHandle.CURRENT, null,
                     mResultReceiver, null, Activity.RESULT_OK, null, null);

             // Attempting to make this transition a little more clean, we are going
             // to hold off on doing a configuration change until we have finished
             // the broadcast and started the home activity.
             mHoldingConfiguration = true;
             updateConfigurationLocked();
         } else {
             String category = null;
             if (mCarModeEnabled) {
                 if (ENABLE_LAUNCH_CAR_DOCK_APP
                         && (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
                     category = Intent.CATEGORY_CAR_DOCK;
                 }
             } else if (isDeskDockState(mDockState)) {
                 if (ENABLE_LAUNCH_DESK_DOCK_APP
                         && (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
                     category = Intent.CATEGORY_DESK_DOCK;
                 }
             } else {
                 if ((disableFlags & UiModeManager.DISABLE_CAR_MODE_GO_HOME) != 0) {
                     category = Intent.CATEGORY_HOME;
                 }
             }

             if (LOG) {
                 Slog.v(TAG, "updateLocked: null action, mDockState="
                         + mDockState +", category=" + category);
             }

             sendConfigurationAndStartDreamOrDockAppLocked(category);
         }

         // keep screen on when charging and in car mode
         boolean keepScreenOn = mCharging &&
                 ((mCarModeEnabled && mCarModeKeepsScreenOn &&
                   (mCarModeEnableFlags & UiModeManager.ENABLE_CAR_MODE_ALLOW_SLEEP) == 0) ||
                  (mCurUiMode == Configuration.UI_MODE_TYPE_DESK && mDeskModeKeepsScreenOn));
         if (keepScreenOn != mWakeLock.isHeld()) {
             if (keepScreenOn) {
                 mWakeLock.acquire();
             } else {
                 mWakeLock.release();
             }
         }
     }

     private void updateAfterBroadcastLocked(String action, int enableFlags, int disableFlags) {
         // Launch a dock activity
         String category = null;
         if (UiModeManager.ACTION_ENTER_CAR_MODE.equals(action)) {
             // Only launch car home when car mode is enabled and the caller
             // has asked us to switch to it.
             if (ENABLE_LAUNCH_CAR_DOCK_APP
                     && (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
                 category = Intent.CATEGORY_CAR_DOCK;
             }
         } else if (UiModeManager.ACTION_ENTER_DESK_MODE.equals(action)) {
             // Only launch car home when desk mode is enabled and the caller
             // has asked us to switch to it.  Currently re-using the car
             // mode flag since we don't have a formal API for "desk mode".
             if (ENABLE_LAUNCH_DESK_DOCK_APP
                     && (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
                 category = Intent.CATEGORY_DESK_DOCK;
             }
         } else {
             // Launch the standard home app if requested.
             if ((disableFlags & UiModeManager.DISABLE_CAR_MODE_GO_HOME) != 0) {
                 category = Intent.CATEGORY_HOME;
             }
         }

         if (LOG) {
             Slog.v(TAG, String.format(
                 "Handling broadcast result for action %s: enable=0x%08x, disable=0x%08x, "
                     + "category=%s",
                 action, enableFlags, disableFlags, category));
         }

         sendConfigurationAndStartDreamOrDockAppLocked(category);
     }

     private void sendConfigurationAndStartDreamOrDockAppLocked(String category) {
         // Update the configuration but don't send it yet.
         mHoldingConfiguration = false;
         updateConfigurationLocked();

         // Start the dock app, if there is one.
         boolean dockAppStarted = false;
         if (category != null) {
             // Now we are going to be careful about switching the
             // configuration and starting the activity -- we need to
             // do this in a specific order under control of the
             // activity manager, to do it cleanly.  So compute the
             // new config, but don't set it yet, and let the
             // activity manager take care of both the start and config
             // change.
             Intent homeIntent = buildHomeIntent(category);
             if (Sandman.shouldStartDockApp(getContext(), homeIntent)) {
                 try {
                     int result = ActivityManagerNative.getDefault().startActivityWithConfig(
                             null, null, homeIntent, null, null, null, 0, 0,
                             mConfiguration, null, UserHandle.USER_CURRENT);
                     if (result >= ActivityManager.START_SUCCESS) {
                         dockAppStarted = true;
                     } else if (result != ActivityManager.START_INTENT_NOT_RESOLVED) {
                         Slog.e(TAG, "Could not start dock app: " + homeIntent
                                 + ", startActivityWithConfig result " + result);
                     }
                 } catch (RemoteException ex) {
                     Slog.e(TAG, "Could not start dock app: " + homeIntent, ex);
                 }
             }
         }

         // Send the new configuration.
         sendConfigurationLocked();

         // If we did not start a dock app, then start dreaming if supported.
         if (category != null && !dockAppStarted) {
             Sandman.startDreamWhenDockedIfAppropriate(getContext());
         }
     }

     private void adjustStatusBarCarModeLocked() {
         final Context context = getContext();
         if (mStatusBarManager == null) {
             mStatusBarManager = (StatusBarManager)
                     context.getSystemService(Context.STATUS_BAR_SERVICE);
         }

         // Fear not: StatusBarManagerService manages a list of requests to disable
         // features of the status bar; these are ORed together to form the
         // active disabled list. So if (for example) the device is locked and
         // the status bar should be totally disabled, the calls below will
         // have no effect until the device is unlocked.
         if (mStatusBarManager != null) {
             mStatusBarManager.disable(mCarModeEnabled
                 ? StatusBarManager.DISABLE_NOTIFICATION_TICKER
                 : StatusBarManager.DISABLE_NONE);
         }

         if (mNotificationManager == null) {
             mNotificationManager = (NotificationManager)
                     context.getSystemService(Context.NOTIFICATION_SERVICE);
         }

         if (mNotificationManager != null) {
             if (mCarModeEnabled) {
                 Intent carModeOffIntent = new Intent(context, DisableCarModeActivity.class);

                 Notification n = new Notification();
                 n.icon = R.drawable.stat_notify_car_mode;
                 n.defaults = Notification.DEFAULT_LIGHTS;
                 n.flags = Notification.FLAG_ONGOING_EVENT;
                 n.when = 0;
                 n.color = context.getResources().getColor(
                         com.android.internal.R.color.system_notification_accent_color);
                 n.setLatestEventInfo(
                         context,
                         context.getString(R.string.car_mode_disable_notification_title),
                         context.getString(R.string.car_mode_disable_notification_message),
                         PendingIntent.getActivityAsUser(context, 0, carModeOffIntent, 0,
                                 null, UserHandle.CURRENT));
                 mNotificationManager.notifyAsUser(null,
                         R.string.car_mode_disable_notification_title, n, UserHandle.ALL);
             } else {
                 mNotificationManager.cancelAsUser(null,
                         R.string.car_mode_disable_notification_title, UserHandle.ALL);
             }
         }
     }

     void updateTwilight() {
         synchronized (mLock) {
             if (isDoingNightModeLocked() && mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
                 updateComputedNightModeLocked();
                 updateLocked(0, 0);
             }
         }
     }

     private void updateComputedNightModeLocked() {
         TwilightState state = mTwilightManager.getCurrentState();
         if (state != null) {
             mComputedNightMode = state.isNight();
         }
     }


 }
	/*
	* Copyright (C) 2008 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;

	import android.app.Activity;
	import android.app.ActivityManager;
	import android.app.ActivityManagerNative;
	import android.app.IUiModeManager;
	import android.app.Notification;
	import android.app.NotificationManager;
	import android.app.PendingIntent;
	import android.app.StatusBarManager;
	import android.app.UiModeManager;
	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.pm.PackageManager;
	import android.content.res.Configuration;
	import android.os.BatteryManager;
	import android.os.Binder;
	import android.os.Handler;
	import android.os.IBinder;
	import android.os.PowerManager;
	import android.os.RemoteException;
	import android.os.UserHandle;
	import android.provider.Settings;
	import android.service.dreams.Sandman;
	import android.util.Slog;

	import java.io.FileDescriptor;
	import java.io.PrintWriter;

	import com.android.internal.R;
	import com.android.internal.app.DisableCarModeActivity;
	import com.android.server.twilight.TwilightListener;
	import com.android.server.twilight.TwilightManager;
	import com.android.server.twilight.TwilightState;

	final class UiModeManagerService extends SystemService {
	private static final String TAG = UiModeManager.class.getSimpleName();
	private static final boolean LOG = false;

	// Enable launching of applications when entering the dock.
	private static final boolean ENABLE_LAUNCH_CAR_DOCK_APP = true;
	private static final boolean ENABLE_LAUNCH_DESK_DOCK_APP = true;

	final Object mLock = new Object();
	private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED;

	private int mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
	int mNightMode = UiModeManager.MODE_NIGHT_NO;

	private boolean mCarModeEnabled = false;
	private boolean mCharging = false;
	private int mDefaultUiModeType;
	private boolean mCarModeKeepsScreenOn;
	private boolean mDeskModeKeepsScreenOn;
	private boolean mTelevision;
	private boolean mWatch;
	private boolean mComputedNightMode;
	private int mCarModeEnableFlags;

	int mCurUiMode = 0;
	private int mSetUiMode = 0;
	private boolean mHoldingConfiguration = false;

	private Configuration mConfiguration = new Configuration();
	boolean mSystemReady;

	private final Handler mHandler = new Handler();

	private TwilightManager mTwilightManager;
	private NotificationManager mNotificationManager;
	private StatusBarManager mStatusBarManager;

	private PowerManager.WakeLock mWakeLock;

	public UiModeManagerService(Context context) {
	super(context);
	}

	private static Intent buildHomeIntent(String category) {
	Intent intent = new Intent(Intent.ACTION_MAIN);
	intent.addCategory(category);
	intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
	\| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
	return intent;
	}

	// The broadcast receiver which receives the result of the ordered broadcast sent when
	// the dock state changes. The original ordered broadcast is sent with an initial result
	// code of RESULT_OK. If any of the registered broadcast receivers changes this value, e.g.,
	// to RESULT_CANCELED, then the intent to start a dock app will not be sent.
	private final BroadcastReceiver mResultReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	if (getResultCode() != Activity.RESULT_OK) {
	if (LOG) {
	Slog.v(TAG, "Handling broadcast result for action " + intent.getAction()
	+ ": canceled: " + getResultCode());
	}
	return;
	}

	final int enableFlags = intent.getIntExtra("enableFlags", 0);
	final int disableFlags = intent.getIntExtra("disableFlags", 0);
	synchronized (mLock) {
	updateAfterBroadcastLocked(intent.getAction(), enableFlags, disableFlags);
	}
	}
	};

	private final BroadcastReceiver mDockModeReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	int state = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
	Intent.EXTRA_DOCK_STATE_UNDOCKED);
	updateDockState(state);
	}
	};

	private final BroadcastReceiver mBatteryReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	mCharging = (intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0);
	synchronized (mLock) {
	if (mSystemReady) {
	updateLocked(0, 0);
	}
	}
	}
	};

	private final TwilightListener mTwilightListener = new TwilightListener() {
	@Override
	public void onTwilightStateChanged() {
	updateTwilight();
	}
	};

	@Override
	public void onStart() {
	final Context context = getContext();
	mTwilightManager = getLocalService(TwilightManager.class);
	final PowerManager powerManager =
	(PowerManager) context.getSystemService(Context.POWER_SERVICE);
	mWakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, TAG);

	context.registerReceiver(mDockModeReceiver,
	new IntentFilter(Intent.ACTION_DOCK_EVENT));
	context.registerReceiver(mBatteryReceiver,
	new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

	mConfiguration.setToDefaults();

	mDefaultUiModeType = context.getResources().getInteger(
	com.android.internal.R.integer.config_defaultUiModeType);
	mCarModeKeepsScreenOn = (context.getResources().getInteger(
	com.android.internal.R.integer.config_carDockKeepsScreenOn) == 1);
	mDeskModeKeepsScreenOn = (context.getResources().getInteger(
	com.android.internal.R.integer.config_deskDockKeepsScreenOn) == 1);
	mTelevision = context.getPackageManager().hasSystemFeature(
	PackageManager.FEATURE_TELEVISION) \|\|
	context.getPackageManager().hasSystemFeature(
	PackageManager.FEATURE_LEANBACK);
	mWatch = context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH);

	mNightMode = Settings.Secure.getInt(context.getContentResolver(),
	Settings.Secure.UI_NIGHT_MODE, UiModeManager.MODE_NIGHT_AUTO);

	mTwilightManager.registerListener(mTwilightListener, mHandler);

	publishBinderService(Context.UI_MODE_SERVICE, mService);
	}

	private final IBinder mService = new IUiModeManager.Stub() {
	@Override
	public void enableCarMode(int flags) {
	final long ident = Binder.clearCallingIdentity();
	try {
	synchronized (mLock) {
	setCarModeLocked(true, flags);
	if (mSystemReady) {
	updateLocked(flags, 0);
	}
	}
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public void disableCarMode(int flags) {
	final long ident = Binder.clearCallingIdentity();
	try {
	synchronized (mLock) {
	setCarModeLocked(false, 0);
	if (mSystemReady) {
	updateLocked(0, flags);
	}
	}
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public int getCurrentModeType() {
	final long ident = Binder.clearCallingIdentity();
	try {
	synchronized (mLock) {
	return mCurUiMode & Configuration.UI_MODE_TYPE_MASK;
	}
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public void setNightMode(int mode) {
	switch (mode) {
	case UiModeManager.MODE_NIGHT_NO:
	case UiModeManager.MODE_NIGHT_YES:
	case UiModeManager.MODE_NIGHT_AUTO:
	break;
	default:
	throw new IllegalArgumentException("Unknown mode: " + mode);
	}

	final long ident = Binder.clearCallingIdentity();
	try {
	synchronized (mLock) {
	if (isDoingNightModeLocked() && mNightMode != mode) {
	Settings.Secure.putInt(getContext().getContentResolver(),
	Settings.Secure.UI_NIGHT_MODE, mode);
	mNightMode = mode;
	updateLocked(0, 0);
	}
	}
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public int getNightMode() {
	synchronized (mLock) {
	return mNightMode;
	}
	}

	@Override
	protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
	if (getContext().checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
	!= PackageManager.PERMISSION_GRANTED) {

	pw.println("Permission Denial: can't dump uimode service from from pid="
	+ Binder.getCallingPid()
	+ ", uid=" + Binder.getCallingUid());
	return;
	}

	dumpImpl(pw);
	}
	};

	void dumpImpl(PrintWriter pw) {
	synchronized (mLock) {
	pw.println("Current UI Mode Service state:");
	pw.print(" mDockState="); pw.print(mDockState);
	pw.print(" mLastBroadcastState="); pw.println(mLastBroadcastState);
	pw.print(" mNightMode="); pw.print(mNightMode);
	pw.print(" mCarModeEnabled="); pw.print(mCarModeEnabled);
	pw.print(" mComputedNightMode="); pw.print(mComputedNightMode);
	pw.print(" mCarModeEnableFlags="); pw.println(mCarModeEnableFlags);
	pw.print(" mCurUiMode=0x"); pw.print(Integer.toHexString(mCurUiMode));
	pw.print(" mSetUiMode=0x"); pw.println(Integer.toHexString(mSetUiMode));
	pw.print(" mHoldingConfiguration="); pw.print(mHoldingConfiguration);
	pw.print(" mSystemReady="); pw.println(mSystemReady);
	pw.print(" mTwilightService.getCurrentState()=");
	pw.println(mTwilightManager.getCurrentState());
	}
	}

	@Override
	public void onBootPhase(int phase) {
	if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
	synchronized (mLock) {
	mSystemReady = true;
	mCarModeEnabled = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
	updateComputedNightModeLocked();
	updateLocked(0, 0);
	}
	}
	}

	boolean isDoingNightModeLocked() {
	return mCarModeEnabled \|\| mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED;
	}

	void setCarModeLocked(boolean enabled, int flags) {
	if (mCarModeEnabled != enabled) {
	mCarModeEnabled = enabled;
	}
	mCarModeEnableFlags = flags;
	}

	private void updateDockState(int newState) {
	synchronized (mLock) {
	if (newState != mDockState) {
	mDockState = newState;
	setCarModeLocked(mDockState == Intent.EXTRA_DOCK_STATE_CAR, 0);
	if (mSystemReady) {
	updateLocked(UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME, 0);
	}
	}
	}
	}

	private static boolean isDeskDockState(int state) {
	switch (state) {
	case Intent.EXTRA_DOCK_STATE_DESK:
	case Intent.EXTRA_DOCK_STATE_LE_DESK:
	case Intent.EXTRA_DOCK_STATE_HE_DESK:
	return true;
	default:
	return false;
	}
	}

	private void updateConfigurationLocked() {
	int uiMode = mDefaultUiModeType;
	if (mTelevision) {
	uiMode = Configuration.UI_MODE_TYPE_TELEVISION;
	} else if (mWatch) {
	uiMode = Configuration.UI_MODE_TYPE_WATCH;
	} else if (mCarModeEnabled) {
	uiMode = Configuration.UI_MODE_TYPE_CAR;
	} else if (isDeskDockState(mDockState)) {
	uiMode = Configuration.UI_MODE_TYPE_DESK;
	}
	if (mCarModeEnabled) {
	if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
	updateComputedNightModeLocked();
	uiMode \|= mComputedNightMode ? Configuration.UI_MODE_NIGHT_YES
	: Configuration.UI_MODE_NIGHT_NO;
	} else {
	uiMode \|= mNightMode << 4;
	}
	} else {
	// Disabling the car mode clears the night mode.
	uiMode = (uiMode & ~Configuration.UI_MODE_NIGHT_MASK) \| Configuration.UI_MODE_NIGHT_NO;
	}

	if (LOG) {
	Slog.d(TAG,
	"updateConfigurationLocked: mDockState=" + mDockState
	+ "; mCarMode=" + mCarModeEnabled
	+ "; mNightMode=" + mNightMode
	+ "; uiMode=" + uiMode);
	}

	mCurUiMode = uiMode;
	if (!mHoldingConfiguration) {
	mConfiguration.uiMode = uiMode;
	}
	}

	private void sendConfigurationLocked() {
	if (mSetUiMode != mConfiguration.uiMode) {
	mSetUiMode = mConfiguration.uiMode;

	try {
	ActivityManagerNative.getDefault().updateConfiguration(mConfiguration);
	} catch (RemoteException e) {
	Slog.w(TAG, "Failure communicating with activity manager", e);
	}
	}
	}

	void updateLocked(int enableFlags, int disableFlags) {
	String action = null;
	String oldAction = null;
	if (mLastBroadcastState == Intent.EXTRA_DOCK_STATE_CAR) {
	adjustStatusBarCarModeLocked();
	oldAction = UiModeManager.ACTION_EXIT_CAR_MODE;
	} else if (isDeskDockState(mLastBroadcastState)) {
	oldAction = UiModeManager.ACTION_EXIT_DESK_MODE;
	}

	if (mCarModeEnabled) {
	if (mLastBroadcastState != Intent.EXTRA_DOCK_STATE_CAR) {
	adjustStatusBarCarModeLocked();

	if (oldAction != null) {
	getContext().sendBroadcastAsUser(new Intent(oldAction), UserHandle.ALL);
	}
	mLastBroadcastState = Intent.EXTRA_DOCK_STATE_CAR;
	action = UiModeManager.ACTION_ENTER_CAR_MODE;
	}
	} else if (isDeskDockState(mDockState)) {
	if (!isDeskDockState(mLastBroadcastState)) {
	if (oldAction != null) {
	getContext().sendBroadcastAsUser(new Intent(oldAction), UserHandle.ALL);
	}
	mLastBroadcastState = mDockState;
	action = UiModeManager.ACTION_ENTER_DESK_MODE;
	}
	} else {
	mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
	action = oldAction;
	}

	if (action != null) {
	if (LOG) {
	Slog.v(TAG, String.format(
	"updateLocked: preparing broadcast: action=%s enable=0x%08x disable=0x%08x",
	action, enableFlags, disableFlags));
	}

	// Send the ordered broadcast; the result receiver will receive after all
	// broadcasts have been sent. If any broadcast receiver changes the result
	// code from the initial value of RESULT_OK, then the result receiver will
	// not launch the corresponding dock application. This gives apps a chance
	// to override the behavior and stay in their app even when the device is
	// placed into a dock.
	Intent intent = new Intent(action);
	intent.putExtra("enableFlags", enableFlags);
	intent.putExtra("disableFlags", disableFlags);
	getContext().sendOrderedBroadcastAsUser(intent, UserHandle.CURRENT, null,
	mResultReceiver, null, Activity.RESULT_OK, null, null);

	// Attempting to make this transition a little more clean, we are going
	// to hold off on doing a configuration change until we have finished
	// the broadcast and started the home activity.
	mHoldingConfiguration = true;
	updateConfigurationLocked();
	} else {
	String category = null;
	if (mCarModeEnabled) {
	if (ENABLE_LAUNCH_CAR_DOCK_APP
	&& (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
	category = Intent.CATEGORY_CAR_DOCK;
	}
	} else if (isDeskDockState(mDockState)) {
	if (ENABLE_LAUNCH_DESK_DOCK_APP
	&& (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
	category = Intent.CATEGORY_DESK_DOCK;
	}
	} else {
	if ((disableFlags & UiModeManager.DISABLE_CAR_MODE_GO_HOME) != 0) {
	category = Intent.CATEGORY_HOME;
	}
	}

	if (LOG) {
	Slog.v(TAG, "updateLocked: null action, mDockState="
	+ mDockState +", category=" + category);
	}

	sendConfigurationAndStartDreamOrDockAppLocked(category);
	}

	// keep screen on when charging and in car mode
	boolean keepScreenOn = mCharging &&
	((mCarModeEnabled && mCarModeKeepsScreenOn &&
	(mCarModeEnableFlags & UiModeManager.ENABLE_CAR_MODE_ALLOW_SLEEP) == 0) \|\|
	(mCurUiMode == Configuration.UI_MODE_TYPE_DESK && mDeskModeKeepsScreenOn));
	if (keepScreenOn != mWakeLock.isHeld()) {
	if (keepScreenOn) {
	mWakeLock.acquire();
	} else {
	mWakeLock.release();
	}
	}
	}

	private void updateAfterBroadcastLocked(String action, int enableFlags, int disableFlags) {
	// Launch a dock activity
	String category = null;
	if (UiModeManager.ACTION_ENTER_CAR_MODE.equals(action)) {
	// Only launch car home when car mode is enabled and the caller
	// has asked us to switch to it.
	if (ENABLE_LAUNCH_CAR_DOCK_APP
	&& (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
	category = Intent.CATEGORY_CAR_DOCK;
	}
	} else if (UiModeManager.ACTION_ENTER_DESK_MODE.equals(action)) {
	// Only launch car home when desk mode is enabled and the caller
	// has asked us to switch to it. Currently re-using the car
	// mode flag since we don't have a formal API for "desk mode".
	if (ENABLE_LAUNCH_DESK_DOCK_APP
	&& (enableFlags & UiModeManager.ENABLE_CAR_MODE_GO_CAR_HOME) != 0) {
	category = Intent.CATEGORY_DESK_DOCK;
	}
	} else {
	// Launch the standard home app if requested.
	if ((disableFlags & UiModeManager.DISABLE_CAR_MODE_GO_HOME) != 0) {
	category = Intent.CATEGORY_HOME;
	}
	}

	if (LOG) {
	Slog.v(TAG, String.format(
	"Handling broadcast result for action %s: enable=0x%08x, disable=0x%08x, "
	+ "category=%s",
	action, enableFlags, disableFlags, category));
	}

	sendConfigurationAndStartDreamOrDockAppLocked(category);
	}

	private void sendConfigurationAndStartDreamOrDockAppLocked(String category) {
	// Update the configuration but don't send it yet.
	mHoldingConfiguration = false;
	updateConfigurationLocked();

	// Start the dock app, if there is one.
	boolean dockAppStarted = false;
	if (category != null) {
	// Now we are going to be careful about switching the
	// configuration and starting the activity -- we need to
	// do this in a specific order under control of the
	// activity manager, to do it cleanly. So compute the
	// new config, but don't set it yet, and let the
	// activity manager take care of both the start and config
	// change.
	Intent homeIntent = buildHomeIntent(category);
	if (Sandman.shouldStartDockApp(getContext(), homeIntent)) {
	try {
	int result = ActivityManagerNative.getDefault().startActivityWithConfig(
	null, null, homeIntent, null, null, null, 0, 0,
	mConfiguration, null, UserHandle.USER_CURRENT);
	if (result >= ActivityManager.START_SUCCESS) {
	dockAppStarted = true;
	} else if (result != ActivityManager.START_INTENT_NOT_RESOLVED) {
	Slog.e(TAG, "Could not start dock app: " + homeIntent
	+ ", startActivityWithConfig result " + result);
	}
	} catch (RemoteException ex) {
	Slog.e(TAG, "Could not start dock app: " + homeIntent, ex);
	}
	}
	}

	// Send the new configuration.
	sendConfigurationLocked();

	// If we did not start a dock app, then start dreaming if supported.
	if (category != null && !dockAppStarted) {
	Sandman.startDreamWhenDockedIfAppropriate(getContext());
	}
	}

	private void adjustStatusBarCarModeLocked() {
	final Context context = getContext();
	if (mStatusBarManager == null) {
	mStatusBarManager = (StatusBarManager)
	context.getSystemService(Context.STATUS_BAR_SERVICE);
	}

	// Fear not: StatusBarManagerService manages a list of requests to disable
	// features of the status bar; these are ORed together to form the
	// active disabled list. So if (for example) the device is locked and
	// the status bar should be totally disabled, the calls below will
	// have no effect until the device is unlocked.
	if (mStatusBarManager != null) {
	mStatusBarManager.disable(mCarModeEnabled
	? StatusBarManager.DISABLE_NOTIFICATION_TICKER
	: StatusBarManager.DISABLE_NONE);
	}

	if (mNotificationManager == null) {
	mNotificationManager = (NotificationManager)
	context.getSystemService(Context.NOTIFICATION_SERVICE);
	}

	if (mNotificationManager != null) {
	if (mCarModeEnabled) {
	Intent carModeOffIntent = new Intent(context, DisableCarModeActivity.class);

	Notification n = new Notification();
	n.icon = R.drawable.stat_notify_car_mode;
	n.defaults = Notification.DEFAULT_LIGHTS;
	n.flags = Notification.FLAG_ONGOING_EVENT;
	n.when = 0;
	n.color = context.getResources().getColor(
	com.android.internal.R.color.system_notification_accent_color);
	n.setLatestEventInfo(
	context,
	context.getString(R.string.car_mode_disable_notification_title),
	context.getString(R.string.car_mode_disable_notification_message),
	PendingIntent.getActivityAsUser(context, 0, carModeOffIntent, 0,
	null, UserHandle.CURRENT));
	mNotificationManager.notifyAsUser(null,
	R.string.car_mode_disable_notification_title, n, UserHandle.ALL);
	} else {
	mNotificationManager.cancelAsUser(null,
	R.string.car_mode_disable_notification_title, UserHandle.ALL);
	}
	}
	}

	void updateTwilight() {
	synchronized (mLock) {
	if (isDoingNightModeLocked() && mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
	updateComputedNightModeLocked();
	updateLocked(0, 0);
	}
	}
	}

	private void updateComputedNightModeLocked() {
	TwilightState state = mTwilightManager.getCurrentState();
	if (state != null) {
	mComputedNightMode = state.isNight();
	}
	}


	}