Refactor car mode.
Extract all UI behavior from dock observer and ACTION_DOCK_EVENT.
Also introduce a desk type to go along with the car type all through
the resource system, since we now need to have corresponding high-level
broadcasts for desk dock mode. As part of that I also reworked some
of the logic for switching modes to all funnel through a single
update() call that looks all of the current state to decide what to
do next, and fixed various locking issues.
In addition I found there were bugs in the configuration change
handling causing us to only switch into the car mode config and
then never get out of it. Unfortunately now that we are actually
changing the configuration for each mode change, the transitions
between them are really crummy as we restart all kinds of
activities. :(
diff --git a/services/java/com/android/server/UiModeManagerService.java b/services/java/com/android/server/UiModeManagerService.java
new file mode 100644
index 0000000..e225edb
--- /dev/null
+++ b/services/java/com/android/server/UiModeManagerService.java
@@ -0,0 +1,629 @@
+/*
+ * 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.ActivityManagerNative;
+import android.app.AlarmManager;
+import android.app.IActivityManager;
+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.ActivityNotFoundException;
+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.location.Criteria;
+import android.location.Location;
+import android.location.LocationListener;
+import android.location.LocationManager;
+import android.os.Binder;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.text.format.DateUtils;
+import android.text.format.Time;
+import android.util.Slog;
+
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
+
+import com.android.internal.R;
+import com.android.internal.app.DisableCarModeActivity;
+
+class UiModeManagerService extends IUiModeManager.Stub {
+ private static final String TAG = UiModeManager.class.getSimpleName();
+ private static final boolean LOG = false;
+
+ private static final String KEY_LAST_UPDATE_INTERVAL = "LAST_UPDATE_INTERVAL";
+
+ private static final int MSG_UPDATE_TWILIGHT = 0;
+ private static final int MSG_ENABLE_LOCATION_UPDATES = 1;
+
+ private static final long LOCATION_UPDATE_MS = 30 * DateUtils.MINUTE_IN_MILLIS;
+ private static final float LOCATION_UPDATE_DISTANCE_METER = 1000 * 20;
+ private static final long LOCATION_UPDATE_ENABLE_INTERVAL_MIN = 5000;
+ private static final long LOCATION_UPDATE_ENABLE_INTERVAL_MAX = 5 * DateUtils.MINUTE_IN_MILLIS;
+ private static final double FACTOR_GMT_OFFSET_LONGITUDE = 1000.0 * 360.0 / DateUtils.DAY_IN_MILLIS;
+
+ private static final String ACTION_UPDATE_NIGHT_MODE = "com.android.server.action.UPDATE_NIGHT_MODE";
+
+ private final Context mContext;
+
+ final Object mLock = new Object();
+
+ private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
+ private int mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
+
+ private int mNightMode = UiModeManager.MODE_NIGHT_NO;
+ private boolean mCarModeEnabled = false;
+
+ private boolean mComputedNightMode;
+ private int mCurUiMode = 0;
+
+ private Configuration mConfiguration = new Configuration();
+
+ private boolean mSystemReady;
+
+ private NotificationManager mNotificationManager;
+
+ private AlarmManager mAlarmManager;
+
+ private LocationManager mLocationManager;
+ private Location mLocation;
+ private StatusBarManager mStatusBarManager;
+
+ // 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) {
+ return;
+ }
+
+ // Launch a dock activity
+ String category;
+ if (UiModeManager.ACTION_ENTER_CAR_MODE.equals(intent.getAction())) {
+ // Only launch car home when car mode is enabled.
+ category = Intent.CATEGORY_CAR_DOCK;
+ } else if (UiModeManager.ACTION_ENTER_DESK_MODE.equals(intent.getAction())) {
+ category = Intent.CATEGORY_DESK_DOCK;
+ } else {
+ category = null;
+ }
+ if (category != null) {
+ intent = new Intent(Intent.ACTION_MAIN);
+ intent.addCategory(category);
+ intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
+ | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
+ try {
+ mContext.startActivity(intent);
+ } catch (ActivityNotFoundException e) {
+ Slog.w(TAG, e.getCause());
+ }
+ }
+ }
+ };
+
+ private final BroadcastReceiver mTwilightUpdateReceiver = new BroadcastReceiver() {
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ if (isDoingNightMode() && mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+ mHandler.sendEmptyMessage(MSG_UPDATE_TWILIGHT);
+ }
+ }
+ };
+
+ 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);
+ }
+ };
+
+ // A LocationListener to initialize the network location provider. The location updates
+ // are handled through the passive location provider.
+ private final LocationListener mEmptyLocationListener = new LocationListener() {
+ public void onLocationChanged(Location location) {
+ }
+
+ public void onProviderDisabled(String provider) {
+ }
+
+ public void onProviderEnabled(String provider) {
+ }
+
+ public void onStatusChanged(String provider, int status, Bundle extras) {
+ }
+ };
+
+ private final LocationListener mLocationListener = new LocationListener() {
+
+ public void onLocationChanged(Location location) {
+ final boolean hasMoved = hasMoved(location);
+ final boolean hasBetterAccuracy = mLocation == null
+ || location.getAccuracy() < mLocation.getAccuracy();
+ if (hasMoved || hasBetterAccuracy) {
+ synchronized (mLock) {
+ mLocation = location;
+ if (hasMoved && isDoingNightMode()
+ && mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+ mHandler.sendEmptyMessage(MSG_UPDATE_TWILIGHT);
+ }
+ }
+ }
+ }
+
+ public void onProviderDisabled(String provider) {
+ }
+
+ public void onProviderEnabled(String provider) {
+ }
+
+ public void onStatusChanged(String provider, int status, Bundle extras) {
+ }
+
+ /*
+ * The user has moved if the accuracy circles of the two locations
+ * don't overlap.
+ */
+ private boolean hasMoved(Location location) {
+ if (location == null) {
+ return false;
+ }
+ if (mLocation == null) {
+ return true;
+ }
+
+ /* if new location is older than the current one, the devices hasn't
+ * moved.
+ */
+ if (location.getTime() < mLocation.getTime()) {
+ return false;
+ }
+
+ /* Get the distance between the two points */
+ float distance = mLocation.distanceTo(location);
+
+ /* Get the total accuracy radius for both locations */
+ float totalAccuracy = mLocation.getAccuracy() + location.getAccuracy();
+
+ /* If the distance is greater than the combined accuracy of the two
+ * points then they can't overlap and hence the user has moved.
+ */
+ return distance >= totalAccuracy;
+ }
+ };
+
+ public UiModeManagerService(Context context) {
+ mContext = context;
+
+ ServiceManager.addService(Context.UI_MODE_SERVICE, this);
+
+ mAlarmManager =
+ (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
+ mLocationManager =
+ (LocationManager)mContext.getSystemService(Context.LOCATION_SERVICE);
+ mContext.registerReceiver(mTwilightUpdateReceiver,
+ new IntentFilter(ACTION_UPDATE_NIGHT_MODE));
+ mContext.registerReceiver(mDockModeReceiver,
+ new IntentFilter(Intent.ACTION_DOCK_EVENT));
+
+ mConfiguration.setToDefaults();
+ }
+
+ public void disableCarMode() {
+ synchronized (mLock) {
+ setCarModeLocked(false);
+ }
+ }
+
+ public void enableCarMode() {
+ mContext.enforceCallingOrSelfPermission(
+ android.Manifest.permission.ENABLE_CAR_MODE,
+ "Need ENABLE_CAR_MODE permission");
+ synchronized (mLock) {
+ setCarModeLocked(true);
+ }
+ }
+
+ public int getCurrentModeType() {
+ synchronized (mLock) {
+ return mCurUiMode & Configuration.UI_MODE_TYPE_MASK;
+ }
+ }
+
+ public void setNightMode(int mode) throws RemoteException {
+ synchronized (mLock) {
+ 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);
+ }
+ if (!isDoingNightMode()) {
+ return;
+ }
+
+ if (mNightMode != mode) {
+ mNightMode = mode;
+ updateLocked();
+ }
+ }
+ }
+
+ public int getNightMode() throws RemoteException {
+ return mNightMode;
+ }
+
+ void systemReady() {
+ synchronized (mLock) {
+ mSystemReady = true;
+ mCarModeEnabled = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
+ updateLocked();
+ mHandler.sendEmptyMessage(MSG_ENABLE_LOCATION_UPDATES);
+ }
+ }
+
+ boolean isDoingNightMode() {
+ return mCarModeEnabled || mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED;
+ }
+
+ void setCarModeLocked(boolean enabled) {
+ if (mCarModeEnabled != enabled) {
+ mCarModeEnabled = enabled;
+ updateLocked();
+ }
+ }
+
+ void updateDockState(int newState) {
+ synchronized (mLock) {
+ if (newState != mDockState) {
+ mDockState = newState;
+ mCarModeEnabled = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
+ if (mSystemReady) {
+ updateLocked();
+ }
+ }
+ }
+ }
+
+ final void updateLocked() {
+ long ident = Binder.clearCallingIdentity();
+
+ try {
+ int uiMode = 0;
+ if (mCarModeEnabled) {
+ uiMode = Configuration.UI_MODE_TYPE_CAR;
+ } else if (mDockState == Intent.EXTRA_DOCK_STATE_DESK) {
+ uiMode = Configuration.UI_MODE_TYPE_DESK;
+ }
+ if (uiMode != 0) {
+ if (mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+ updateTwilightLocked();
+ 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 = Configuration.UI_MODE_TYPE_NORMAL |
+ Configuration.UI_MODE_NIGHT_NO;
+ }
+
+ if (uiMode != mCurUiMode) {
+ mCurUiMode = uiMode;
+
+ try {
+ final IActivityManager am = ActivityManagerNative.getDefault();
+ mConfiguration.uiMode = uiMode;
+ am.updateConfiguration(mConfiguration);
+ } catch (RemoteException e) {
+ Slog.w(TAG, "Failure communicating with activity manager", e);
+ }
+ }
+
+ String action = null;
+ String oldAction = null;
+ if (mLastBroadcastState == Intent.EXTRA_DOCK_STATE_CAR) {
+ oldAction = UiModeManager.ACTION_EXIT_CAR_MODE;
+ } else if (mLastBroadcastState == Intent.EXTRA_DOCK_STATE_DESK) {
+ oldAction = UiModeManager.ACTION_EXIT_DESK_MODE;
+ }
+
+ if (mCarModeEnabled) {
+ if (mLastBroadcastState != Intent.EXTRA_DOCK_STATE_CAR) {
+ adjustStatusBarCarModeLocked();
+
+ if (oldAction != null) {
+ mContext.sendBroadcast(new Intent(oldAction));
+ }
+ mLastBroadcastState = Intent.EXTRA_DOCK_STATE_CAR;
+ action = UiModeManager.ACTION_ENTER_CAR_MODE;
+ }
+ } else if (mDockState == Intent.EXTRA_DOCK_STATE_DESK) {
+ if (mLastBroadcastState != Intent.EXTRA_DOCK_STATE_DESK) {
+ if (oldAction != null) {
+ mContext.sendBroadcast(new Intent(oldAction));
+ }
+ mLastBroadcastState = Intent.EXTRA_DOCK_STATE_DESK;
+ action = UiModeManager.ACTION_ENTER_DESK_MODE;
+ }
+ } else {
+ if (mLastBroadcastState == Intent.EXTRA_DOCK_STATE_CAR) {
+ adjustStatusBarCarModeLocked();
+ }
+
+ mLastBroadcastState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
+ action = oldAction;
+ }
+
+ if (action != null) {
+ // 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.
+ mContext.sendOrderedBroadcast(new Intent(action), null,
+ mResultReceiver, null, Activity.RESULT_OK, null, null);
+ }
+ } finally {
+ Binder.restoreCallingIdentity(ident);
+ }
+ }
+
+ private void adjustStatusBarCarModeLocked() {
+ if (mStatusBarManager == null) {
+ mStatusBarManager = (StatusBarManager) mContext.getSystemService(Context.STATUS_BAR_SERVICE);
+ }
+
+ // Fear not: StatusBarService 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)
+ mContext.getSystemService(Context.NOTIFICATION_SERVICE);
+ }
+
+ if (mNotificationManager != null) {
+ if (mCarModeEnabled) {
+ Intent carModeOffIntent = new Intent(mContext, 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.setLatestEventInfo(
+ mContext,
+ mContext.getString(R.string.car_mode_disable_notification_title),
+ mContext.getString(R.string.car_mode_disable_notification_message),
+ PendingIntent.getActivity(mContext, 0, carModeOffIntent, 0));
+ mNotificationManager.notify(0, n);
+ } else {
+ mNotificationManager.cancel(0);
+ }
+ }
+ }
+
+ private final Handler mHandler = new Handler() {
+
+ boolean mPassiveListenerEnabled;
+ boolean mNetworkListenerEnabled;
+
+ @Override
+ public void handleMessage(Message msg) {
+ switch (msg.what) {
+ case MSG_UPDATE_TWILIGHT:
+ synchronized (mLock) {
+ if (isDoingNightMode() && mLocation != null
+ && mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+ updateTwilightLocked();
+ updateLocked();
+ }
+ }
+ break;
+ case MSG_ENABLE_LOCATION_UPDATES:
+ // enable network provider to receive at least location updates for a given
+ // distance.
+ boolean networkLocationEnabled;
+ try {
+ networkLocationEnabled =
+ mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
+ } catch (Exception e) {
+ // we may get IllegalArgumentException if network location provider
+ // does not exist or is not yet installed.
+ networkLocationEnabled = false;
+ }
+ if (!mNetworkListenerEnabled && networkLocationEnabled) {
+ mNetworkListenerEnabled = true;
+ mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
+ LOCATION_UPDATE_MS, 0, mEmptyLocationListener);
+
+ if (mLocation == null) {
+ retrieveLocation();
+ }
+ synchronized (mLock) {
+ if (isDoingNightMode() && mLocation != null
+ && mNightMode == UiModeManager.MODE_NIGHT_AUTO) {
+ updateTwilightLocked();
+ updateLocked();
+ }
+ }
+ }
+ // enable passive provider to receive updates from location fixes (gps
+ // and network).
+ boolean passiveLocationEnabled;
+ try {
+ passiveLocationEnabled =
+ mLocationManager.isProviderEnabled(LocationManager.PASSIVE_PROVIDER);
+ } catch (Exception e) {
+ // we may get IllegalArgumentException if passive location provider
+ // does not exist or is not yet installed.
+ passiveLocationEnabled = false;
+ }
+ if (!mPassiveListenerEnabled && passiveLocationEnabled) {
+ mPassiveListenerEnabled = true;
+ mLocationManager.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER,
+ 0, LOCATION_UPDATE_DISTANCE_METER , mLocationListener);
+ }
+ if (!(mNetworkListenerEnabled && mPassiveListenerEnabled)) {
+ long interval = msg.getData().getLong(KEY_LAST_UPDATE_INTERVAL);
+ interval *= 1.5;
+ if (interval == 0) {
+ interval = LOCATION_UPDATE_ENABLE_INTERVAL_MIN;
+ } else if (interval > LOCATION_UPDATE_ENABLE_INTERVAL_MAX) {
+ interval = LOCATION_UPDATE_ENABLE_INTERVAL_MAX;
+ }
+ Bundle bundle = new Bundle();
+ bundle.putLong(KEY_LAST_UPDATE_INTERVAL, interval);
+ Message newMsg = mHandler.obtainMessage(MSG_ENABLE_LOCATION_UPDATES);
+ newMsg.setData(bundle);
+ mHandler.sendMessageDelayed(newMsg, interval);
+ }
+ break;
+ }
+ }
+
+ private void retrieveLocation() {
+ Location location;
+ Criteria criteria = new Criteria();
+ criteria.setSpeedRequired(false);
+ criteria.setAltitudeRequired(false);
+ criteria.setBearingRequired(false);
+ criteria.setAccuracy(Criteria.ACCURACY_FINE);
+ final String bestProvider = mLocationManager.getBestProvider(criteria, true);
+ location = mLocationManager.getLastKnownLocation(bestProvider);
+ // In the case there is no location available (e.g. GPS fix or network location
+ // is not available yet), the longitude of the location is estimated using the timezone,
+ // latitude and accuracy are set to get a good average.
+ if (location == null) {
+ Time currentTime = new Time();
+ currentTime.set(System.currentTimeMillis());
+ double lngOffset = FACTOR_GMT_OFFSET_LONGITUDE *
+ (currentTime.gmtoff - (currentTime.isDst > 0 ? 3600 : 0));
+ location = new Location("fake");
+ location.setLongitude(lngOffset);
+ location.setLatitude(0);
+ location.setAccuracy(417000.0f);
+ location.setTime(System.currentTimeMillis());
+ }
+ synchronized (mLock) {
+ mLocation = location;
+ }
+ }
+ };
+
+ void updateTwilightLocked() {
+ if (mLocation == null) {
+ return;
+ }
+ final long currentTime = System.currentTimeMillis();
+ boolean nightMode;
+ // calculate current twilight
+ TwilightCalculator tw = new TwilightCalculator();
+ tw.calculateTwilight(currentTime,
+ mLocation.getLatitude(), mLocation.getLongitude());
+ if (tw.mState == TwilightCalculator.DAY) {
+ nightMode = false;
+ } else {
+ nightMode = true;
+ }
+
+ // schedule next update
+ long nextUpdate = 0;
+ if (tw.mSunrise == -1 || tw.mSunset == -1) {
+ // In the case the day or night never ends the update is scheduled 12 hours later.
+ nextUpdate = currentTime + 12 * DateUtils.HOUR_IN_MILLIS;
+ } else {
+ final int mLastTwilightState = tw.mState;
+ // add some extra time to be on the save side.
+ nextUpdate += DateUtils.MINUTE_IN_MILLIS;
+ if (currentTime > tw.mSunset) {
+ // next update should be on the following day
+ tw.calculateTwilight(currentTime
+ + DateUtils.DAY_IN_MILLIS, mLocation.getLatitude(),
+ mLocation.getLongitude());
+ }
+
+ if (mLastTwilightState == TwilightCalculator.NIGHT) {
+ nextUpdate += tw.mSunrise;
+ } else {
+ nextUpdate += tw.mSunset;
+ }
+ }
+
+ Intent updateIntent = new Intent(ACTION_UPDATE_NIGHT_MODE);
+ PendingIntent pendingIntent =
+ PendingIntent.getBroadcast(mContext, 0, updateIntent, 0);
+ mAlarmManager.cancel(pendingIntent);
+ mAlarmManager.set(AlarmManager.RTC_WAKEUP, nextUpdate, pendingIntent);
+
+ mComputedNightMode = nightMode;
+ }
+
+ @Override
+ protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+ if (mContext.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;
+ }
+
+ 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.println(mComputedNightMode);
+ pw.print(" mCurUiMode=0x"); pw.print(Integer.toHexString(mCurUiMode));
+ pw.print(" mSystemReady="); pw.println(mSystemReady);
+ if (mLocation != null) {
+ pw.print(" mLocation="); pw.println(mLocation);
+ }
+ }
+ }
+}