Tobias Haamel a712dcec1c Init car mode when phone is booted in a dock.
When the device is booted in a car dock the car mode needs to be set
as well, so that the status bar notification shows up and the system
is initialized the same way as if the phone is placed into a car dock
when it's booted already.
2010-02-25 11:14:21 +01:00

694 lines
29 KiB
Java

/*
* 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.KeyguardManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.StatusBarManager;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Configuration;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.os.Binder;
import android.media.AudioManager;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.os.UEventObserver;
import android.provider.Settings;
import android.server.BluetoothService;
import android.text.format.DateUtils;
import android.text.format.Time;
import android.util.Log;
import com.android.internal.R;
import com.android.internal.app.DisableCarModeActivity;
import com.android.internal.widget.LockPatternUtils;
import java.io.FileNotFoundException;
import java.io.FileReader;
/**
* <p>DockObserver monitors for a docking station.
*/
class DockObserver extends UEventObserver {
private static final String TAG = DockObserver.class.getSimpleName();
private static final boolean LOG = false;
private static final String DOCK_UEVENT_MATCH = "DEVPATH=/devices/virtual/switch/dock";
private static final String DOCK_STATE_PATH = "/sys/class/switch/dock/state";
private static final String KEY_LAST_UPDATE_INTERVAL = "LAST_UPDATE_INTERVAL";
private static final int MSG_DOCK_STATE = 0;
private static final int MSG_UPDATE_TWILIGHT = 1;
private static final int MSG_ENABLE_LOCATION_UPDATES = 2;
public static final int MODE_NIGHT_AUTO = Configuration.UI_MODE_NIGHT_MASK >> 4;
public static final int MODE_NIGHT_NO = Configuration.UI_MODE_NIGHT_NO >> 4;
public static final int MODE_NIGHT_YES = Configuration.UI_MODE_NIGHT_YES >> 4;
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;
// velocity for estimating a potential movement: 150km/h
private static final float MAX_VELOCITY_M_MS = 150 / 3600;
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 int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
private int mPreviousDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
private int mNightMode = MODE_NIGHT_NO;
private boolean mCarModeEnabled = false;
private boolean mSystemReady;
private final Context mContext;
private PowerManagerService mPowerManager;
private NotificationManager mNotificationManager;
private KeyguardManager.KeyguardLock mKeyguardLock;
private boolean mKeyguardDisabled;
private LockPatternUtils mLockPatternUtils;
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 (mCarModeEnabled) {
// Only launch car home when car mode is enabled.
category = Intent.CATEGORY_CAR_DOCK;
} else if (mDockState == Intent.EXTRA_DOCK_STATE_DESK) {
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) {
Log.w(TAG, e.getCause());
}
}
}
};
private final BroadcastReceiver mTwilightUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (mCarModeEnabled && mNightMode == MODE_NIGHT_AUTO) {
mHandler.sendEmptyMessage(MSG_UPDATE_TWILIGHT);
}
}
};
private final LocationListener mLocationListener = new LocationListener() {
public void onLocationChanged(Location location) {
updateLocation(location);
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// If the network location is no longer available check for a GPS fix
// and try to update the location.
if (provider == LocationManager.NETWORK_PROVIDER &&
status != LocationProvider.AVAILABLE) {
updateLocation(mLocation);
}
}
private void updateLocation(Location location) {
location = DockObserver.chooseBestLocation(location,
mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER));
if (hasMoved(location)) {
synchronized (this) {
mLocation = location;
}
if (mCarModeEnabled && mNightMode == MODE_NIGHT_AUTO) {
mHandler.sendEmptyMessage(MSG_UPDATE_TWILIGHT);
}
}
}
/*
* 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 DockObserver(Context context, PowerManagerService pm) {
mContext = context;
mPowerManager = pm;
mLockPatternUtils = new LockPatternUtils(context);
init(); // set initial status
ServiceManager.addService("uimode", mBinder);
mAlarmManager =
(AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
mLocationManager =
(LocationManager)mContext.getSystemService(Context.LOCATION_SERVICE);
mContext.registerReceiver(mTwilightUpdateReceiver,
new IntentFilter(ACTION_UPDATE_NIGHT_MODE));
startObserving(DOCK_UEVENT_MATCH);
}
@Override
public void onUEvent(UEventObserver.UEvent event) {
if (Log.isLoggable(TAG, Log.VERBOSE)) {
Log.v(TAG, "Dock UEVENT: " + event.toString());
}
synchronized (this) {
try {
int newState = Integer.parseInt(event.get("SWITCH_STATE"));
if (newState != mDockState) {
mPreviousDockState = mDockState;
mDockState = newState;
boolean carModeEnabled = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
if (mCarModeEnabled != carModeEnabled) {
try {
setCarMode(carModeEnabled);
} catch (RemoteException e1) {
Log.w(TAG, "Unable to change car mode.", e1);
}
}
if (mSystemReady) {
// Don't force screen on when undocking from the desk dock.
// The change in power state will do this anyway.
// FIXME - we should be configurable.
if (mPreviousDockState != Intent.EXTRA_DOCK_STATE_DESK ||
mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
mPowerManager.userActivityWithForce(SystemClock.uptimeMillis(),
false, true);
}
update();
}
}
} catch (NumberFormatException e) {
Log.e(TAG, "Could not parse switch state from event " + event);
}
}
}
private final void init() {
char[] buffer = new char[1024];
try {
FileReader file = new FileReader(DOCK_STATE_PATH);
int len = file.read(buffer, 0, 1024);
mPreviousDockState = mDockState = Integer.valueOf((new String(buffer, 0, len)).trim());
} catch (FileNotFoundException e) {
Log.w(TAG, "This kernel does not have dock station support");
} catch (Exception e) {
Log.e(TAG, "" , e);
}
}
void systemReady() {
synchronized (this) {
KeyguardManager keyguardManager =
(KeyguardManager)mContext.getSystemService(Context.KEYGUARD_SERVICE);
mKeyguardLock = keyguardManager.newKeyguardLock(TAG);
final boolean enableCarMode = mDockState == Intent.EXTRA_DOCK_STATE_CAR;
if (enableCarMode) {
try {
setCarMode(enableCarMode);
} catch (RemoteException e) {
Log.w(TAG, "Unable to change car mode.", e);
}
}
// don't bother broadcasting undocked here
if (mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
update();
}
mSystemReady = true;
mHandler.sendEmptyMessage(MSG_ENABLE_LOCATION_UPDATES);
}
}
private final void update() {
mHandler.sendEmptyMessage(MSG_DOCK_STATE);
}
private final Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_DOCK_STATE:
synchronized (this) {
Log.i(TAG, "Dock state changed: " + mDockState);
final ContentResolver cr = mContext.getContentResolver();
if (Settings.Secure.getInt(cr,
Settings.Secure.DEVICE_PROVISIONED, 0) == 0) {
Log.i(TAG, "Device not provisioned, skipping dock broadcast");
return;
}
// Pack up the values and broadcast them to everyone
Intent intent = new Intent(Intent.ACTION_DOCK_EVENT);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
if (mCarModeEnabled && mDockState != Intent.EXTRA_DOCK_STATE_CAR) {
// Pretend to be in DOCK_STATE_CAR.
intent.putExtra(Intent.EXTRA_DOCK_STATE, Intent.EXTRA_DOCK_STATE_CAR);
} else if (!mCarModeEnabled && mDockState == Intent.EXTRA_DOCK_STATE_CAR) {
// Pretend to be in DOCK_STATE_UNDOCKED.
intent.putExtra(Intent.EXTRA_DOCK_STATE, Intent.EXTRA_DOCK_STATE_UNDOCKED);
} else {
intent.putExtra(Intent.EXTRA_DOCK_STATE, mDockState);
}
intent.putExtra(Intent.EXTRA_PHYSICAL_DOCK_STATE, mDockState);
intent.putExtra(Intent.EXTRA_CAR_MODE_ENABLED, mCarModeEnabled);
// Check if this is Bluetooth Dock
String address = BluetoothService.readDockBluetoothAddress();
if (address != null)
intent.putExtra(BluetoothDevice.EXTRA_DEVICE,
BluetoothAdapter.getDefaultAdapter().getRemoteDevice(address));
// User feedback to confirm dock connection. Particularly
// useful for flaky contact pins...
if (Settings.System.getInt(cr,
Settings.System.DOCK_SOUNDS_ENABLED, 1) == 1)
{
String whichSound = null;
if (mDockState == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
if (mPreviousDockState == Intent.EXTRA_DOCK_STATE_DESK) {
whichSound = Settings.System.DESK_UNDOCK_SOUND;
} else if (mPreviousDockState == Intent.EXTRA_DOCK_STATE_CAR) {
whichSound = Settings.System.CAR_UNDOCK_SOUND;
}
} else {
if (mDockState == Intent.EXTRA_DOCK_STATE_DESK) {
whichSound = Settings.System.DESK_DOCK_SOUND;
} else if (mDockState == Intent.EXTRA_DOCK_STATE_CAR) {
whichSound = Settings.System.CAR_DOCK_SOUND;
}
}
if (whichSound != null) {
final String soundPath = Settings.System.getString(cr, whichSound);
if (soundPath != null) {
final Uri soundUri = Uri.parse("file://" + soundPath);
if (soundUri != null) {
final Ringtone sfx = RingtoneManager.getRingtone(mContext, soundUri);
if (sfx != null) {
sfx.setStreamType(AudioManager.STREAM_SYSTEM);
sfx.play();
}
}
}
}
}
// 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.sendStickyOrderedBroadcast(
intent, mResultReceiver, null, Activity.RESULT_OK, null, null);
}
break;
case MSG_UPDATE_TWILIGHT:
synchronized (this) {
if (mCarModeEnabled && mLocation != null && mNightMode == MODE_NIGHT_AUTO) {
try {
DockObserver.this.updateTwilight();
} catch (RemoteException e) {
Log.w(TAG, "Unable to change night mode.", e);
}
}
}
break;
case MSG_ENABLE_LOCATION_UPDATES:
if (mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
LOCATION_UPDATE_MS, LOCATION_UPDATE_DISTANCE_METER, mLocationListener);
retrieveLocation();
if (mCarModeEnabled && mLocation != null && mNightMode == MODE_NIGHT_AUTO) {
try {
DockObserver.this.updateTwilight();
} catch (RemoteException e) {
Log.w(TAG, "Unable to change night mode.", e);
}
}
} else {
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() {
final Location gpsLocation =
mLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Location location;
Criteria criteria = new Criteria();
criteria.setSpeedRequired(false);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
final String bestProvider = mLocationManager.getBestProvider(criteria, true);
if (LocationManager.GPS_PROVIDER.equals(bestProvider)) {
location = gpsLocation;
} else {
location = DockObserver.chooseBestLocation(gpsLocation,
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(59.95);
location.setAccuracy(417000.0f);
location.setTime(System.currentTimeMillis());
}
synchronized (this) {
mLocation = location;
}
}
};
private void adjustStatusBarCarMode() {
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) {
long ident = Binder.clearCallingIdentity();
mStatusBarManager.disable(mCarModeEnabled
? StatusBarManager.DISABLE_NOTIFICATION_TICKER
: StatusBarManager.DISABLE_NONE);
Binder.restoreCallingIdentity(ident);
}
if (mNotificationManager == null) {
mNotificationManager = (NotificationManager)
mContext.getSystemService(Context.NOTIFICATION_SERVICE);
}
if (mNotificationManager != null) {
long ident = Binder.clearCallingIdentity();
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);
}
Binder.restoreCallingIdentity(ident);
}
}
private void setCarMode(boolean enabled) throws RemoteException {
mCarModeEnabled = enabled;
if (enabled) {
if (mNightMode == MODE_NIGHT_AUTO) {
updateTwilight();
} else {
setMode(Configuration.UI_MODE_TYPE_CAR, mNightMode << 4);
}
} else {
// Disabling the car mode clears the night mode.
setMode(Configuration.UI_MODE_TYPE_NORMAL,
Configuration.UI_MODE_NIGHT_UNDEFINED);
}
adjustStatusBarCarMode();
}
private void setMode(int modeType, int modeNight) throws RemoteException {
long ident = Binder.clearCallingIdentity();
final IActivityManager am = ActivityManagerNative.getDefault();
Configuration config = am.getConfiguration();
if (config.uiMode != (modeType | modeNight)) {
config.uiMode = modeType | modeNight;
am.updateConfiguration(config);
}
Binder.restoreCallingIdentity(ident);
}
private void setNightMode(int mode) throws RemoteException {
if (mNightMode != mode) {
mNightMode = mode;
switch (mode) {
case MODE_NIGHT_NO:
case MODE_NIGHT_YES:
setMode(Configuration.UI_MODE_TYPE_CAR, mode << 4);
break;
case MODE_NIGHT_AUTO:
long ident = Binder.clearCallingIdentity();
updateTwilight();
Binder.restoreCallingIdentity(ident);
break;
default:
setMode(Configuration.UI_MODE_TYPE_CAR, MODE_NIGHT_NO << 4);
break;
}
}
}
private void updateTwilight() throws RemoteException {
synchronized (this) {
if (mLocation == null) {
return;
}
final long currentTime = System.currentTimeMillis();
int nightMode;
// calculate current twilight
TwilightCalculator tw = new TwilightCalculator();
tw.calculateTwilight(currentTime,
mLocation.getLatitude(), mLocation.getLongitude());
if (tw.mState == TwilightCalculator.DAY) {
nightMode = MODE_NIGHT_NO;
} else {
nightMode = MODE_NIGHT_YES;
}
// 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);
// Make sure that we really set the new mode only if we're in car mode and
// automatic switching is enables.
if (mCarModeEnabled && mNightMode == MODE_NIGHT_AUTO) {
setMode(Configuration.UI_MODE_TYPE_CAR, nightMode << 4);
}
}
}
/**
* Check which of two locations is better by comparing the distance a device
* could have cover since the last timestamp of the location.
*
* @param location first location
* @param otherLocation second location
* @return one of the two locations
*/
protected static Location chooseBestLocation(Location location, Location otherLocation) {
if (location == null) {
return otherLocation;
}
if (otherLocation == null) {
return location;
}
final long currentTime = System.currentTimeMillis();
float gpsPotentialMove = MAX_VELOCITY_M_MS * (currentTime - location.getTime())
+ location.getAccuracy();
float otherPotentialMove = MAX_VELOCITY_M_MS * (currentTime - otherLocation.getTime())
+ otherLocation.getAccuracy();
if (gpsPotentialMove < otherPotentialMove) {
return location;
} else {
return otherLocation;
}
}
/**
* Wrapper class implementing the IUiModeManager interface.
*/
private final IUiModeManager.Stub mBinder = new IUiModeManager.Stub() {
public void disableCarMode() throws RemoteException {
if (mCarModeEnabled) {
setCarMode(false);
update();
}
}
public void enableCarMode() throws RemoteException {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.ENABLE_CAR_MODE,
"Need ENABLE_CAR_MODE permission");
if (!mCarModeEnabled) {
setCarMode(true);
update();
}
}
public void setNightMode(int mode) throws RemoteException {
if (mCarModeEnabled) {
DockObserver.this.setNightMode(mode);
}
}
public int getNightMode() throws RemoteException {
return mNightMode;
}
};
}