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/*
* Copyright (C) 2009 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.settings.bluetooth;
import android.app.Service;
import android.bluetooth.BluetoothA2dp;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothHeadset;
import android.bluetooth.BluetoothProfile;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.util.Log;
public final class DockEventReceiver extends BroadcastReceiver {
private static final boolean DEBUG = DockService.DEBUG;
private static final String TAG = "DockEventReceiver";
public static final String ACTION_DOCK_SHOW_UI =
"com.android.settings.bluetooth.action.DOCK_SHOW_UI";
private static final int EXTRA_INVALID = -1234;
private static final Object sStartingServiceSync = new Object();
private static PowerManager.WakeLock sStartingService;
@Override
public void onReceive(Context context, Intent intent) {
if (intent == null)
return;
int state = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, intent.getIntExtra(
BluetoothAdapter.EXTRA_STATE, EXTRA_INVALID));
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (DEBUG) {
Log.d(TAG, "Action: " + intent.getAction() + " State:" + state + " Device: "
+ (device == null ? "null" : device.getName()));
}
if (Intent.ACTION_DOCK_EVENT.equals(intent.getAction())
|| ACTION_DOCK_SHOW_UI.endsWith(intent.getAction())) {
if (device == null) {
if (DEBUG) Log.d(TAG, "Device is missing");
return;
}
switch (state) {
case Intent.EXTRA_DOCK_STATE_UNDOCKED:
case Intent.EXTRA_DOCK_STATE_CAR:
case Intent.EXTRA_DOCK_STATE_DESK:
Intent i = new Intent(intent);
i.setClass(context, DockService.class);
beginStartingService(context, i);
break;
default:
Log.e(TAG, "Unknown state: " + state);
break;
}
} else if (BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED.equals(intent.getAction()) ||
BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED.equals(intent.getAction())) {
int newState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE,
BluetoothProfile.STATE_CONNECTED);
int oldState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, 0);
/*
* Reconnect to the dock if:
* 1) it is a dock
* 2) it is disconnected
* 3) the disconnect is initiated remotely
* 4) the dock is still docked (check can only be done in the Service)
*/
if (device == null) {
if (DEBUG) Log.d(TAG, "Device is missing");
return;
}
if (newState == BluetoothProfile.STATE_DISCONNECTED &&
oldState != BluetoothProfile.STATE_DISCONNECTING) {
// Too bad, the dock state can't be checked from a BroadcastReceiver.
Intent i = new Intent(intent);
i.setClass(context, DockService.class);
beginStartingService(context, i);
}
} else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(intent.getAction())) {
int btState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
if (btState != BluetoothAdapter.STATE_TURNING_ON) {
Intent i = new Intent(intent);
i.setClass(context, DockService.class);
beginStartingService(context, i);
}
}
}
/**
* Start the service to process the current event notifications, acquiring
* the wake lock before returning to ensure that the service will run.
*/
private static void beginStartingService(Context context, Intent intent) {
synchronized (sStartingServiceSync) {
if (sStartingService == null) {
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
sStartingService = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"StartingDockService");
}
sStartingService.acquire();
if (context.startService(intent) == null) {
Log.e(TAG, "Can't start DockService");
}
}
}
/**
* Called back by the service when it has finished processing notifications,
* releasing the wake lock if the service is now stopping.
*/
public static void finishStartingService(Service service, int startId) {
synchronized (sStartingServiceSync) {
if (sStartingService != null) {
if (DEBUG) Log.d(TAG, "stopSelf id = " + startId);
if (service.stopSelfResult(startId)) {
Log.d(TAG, "finishStartingService: stopping service");
sStartingService.release();
}
}
}
}
}
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