1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.bluetooth; 18 19 import android.app.Service; 20 import android.bluetooth.BluetoothA2dp; 21 import android.bluetooth.BluetoothAdapter; 22 import android.bluetooth.BluetoothDevice; 23 import android.bluetooth.BluetoothHeadset; 24 import android.bluetooth.BluetoothProfile; 25 import android.content.BroadcastReceiver; 26 import android.content.Context; 27 import android.content.Intent; 28 import android.os.PowerManager; 29 import android.util.Log; 30 31 public final class DockEventReceiver extends BroadcastReceiver { 32 33 private static final boolean DEBUG = DockService.DEBUG; 34 35 private static final String TAG = "DockEventReceiver"; 36 37 public static final String ACTION_DOCK_SHOW_UI = 38 "com.android.settings.bluetooth.action.DOCK_SHOW_UI"; 39 40 private static final int EXTRA_INVALID = -1234; 41 42 private static final Object sStartingServiceSync = new Object(); 43 44 private static PowerManager.WakeLock sStartingService; 45 46 @Override onReceive(Context context, Intent intent)47 public void onReceive(Context context, Intent intent) { 48 if (intent == null) 49 return; 50 51 int state = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, intent.getIntExtra( 52 BluetoothAdapter.EXTRA_STATE, EXTRA_INVALID)); 53 BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 54 55 if (DEBUG) { 56 Log.d(TAG, "Action: " + intent.getAction() + " State:" + state + " Device: " 57 + (device == null ? "null" : device.getAliasName())); 58 } 59 60 if (Intent.ACTION_DOCK_EVENT.equals(intent.getAction()) 61 || ACTION_DOCK_SHOW_UI.endsWith(intent.getAction())) { 62 if (device == null) { 63 if (DEBUG) Log.d(TAG, "Device is missing"); 64 return; 65 } 66 67 switch (state) { 68 case Intent.EXTRA_DOCK_STATE_UNDOCKED: 69 case Intent.EXTRA_DOCK_STATE_CAR: 70 case Intent.EXTRA_DOCK_STATE_DESK: 71 case Intent.EXTRA_DOCK_STATE_LE_DESK: 72 case Intent.EXTRA_DOCK_STATE_HE_DESK: 73 Intent i = new Intent(intent); 74 i.setClass(context, DockService.class); 75 beginStartingService(context, i); 76 break; 77 default: 78 Log.e(TAG, "Unknown state: " + state); 79 break; 80 } 81 } else if (BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED.equals(intent.getAction()) || 82 BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED.equals(intent.getAction())) { 83 int newState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, 84 BluetoothProfile.STATE_CONNECTED); 85 int oldState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, 0); 86 87 /* 88 * Reconnect to the dock if: 89 * 1) it is a dock 90 * 2) it is disconnected 91 * 3) the disconnect is initiated remotely 92 * 4) the dock is still docked (check can only be done in the Service) 93 */ 94 if (device == null) { 95 if (DEBUG) Log.d(TAG, "Device is missing"); 96 return; 97 } 98 99 if (newState == BluetoothProfile.STATE_DISCONNECTED && 100 oldState != BluetoothProfile.STATE_DISCONNECTING) { 101 // Too bad, the dock state can't be checked from a BroadcastReceiver. 102 Intent i = new Intent(intent); 103 i.setClass(context, DockService.class); 104 beginStartingService(context, i); 105 } 106 107 } else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(intent.getAction())) { 108 int btState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR); 109 if (btState != BluetoothAdapter.STATE_TURNING_ON) { 110 Intent i = new Intent(intent); 111 i.setClass(context, DockService.class); 112 beginStartingService(context, i); 113 } 114 } 115 } 116 117 /** 118 * Start the service to process the current event notifications, acquiring 119 * the wake lock before returning to ensure that the service will run. 120 */ beginStartingService(Context context, Intent intent)121 private static void beginStartingService(Context context, Intent intent) { 122 synchronized (sStartingServiceSync) { 123 if (sStartingService == null) { 124 PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 125 sStartingService = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 126 "StartingDockService"); 127 } 128 129 sStartingService.acquire(); 130 131 if (context.startService(intent) == null) { 132 Log.e(TAG, "Can't start DockService"); 133 } 134 } 135 } 136 137 /** 138 * Called back by the service when it has finished processing notifications, 139 * releasing the wake lock if the service is now stopping. 140 */ finishStartingService(Service service, int startId)141 public static void finishStartingService(Service service, int startId) { 142 synchronized (sStartingServiceSync) { 143 if (sStartingService != null) { 144 if (DEBUG) Log.d(TAG, "stopSelf id = " + startId); 145 if (service.stopSelfResult(startId)) { 146 Log.d(TAG, "finishStartingService: stopping service"); 147 sStartingService.release(); 148 } 149 } 150 } 151 } 152 } 153