Jason Monk | 7ce96b9 | 2015-02-02 11:27:58 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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.settingslib.bluetooth; |
| 18 | |
| 19 | import android.bluetooth.BluetoothAdapter; |
| 20 | import android.bluetooth.BluetoothDevice; |
| 21 | import android.content.Context; |
| 22 | import android.util.Log; |
| 23 | |
| 24 | import java.util.ArrayList; |
| 25 | import java.util.Collection; |
| 26 | import java.util.List; |
| 27 | |
| 28 | /** |
| 29 | * CachedBluetoothDeviceManager manages the set of remote Bluetooth devices. |
| 30 | */ |
| 31 | public final class CachedBluetoothDeviceManager { |
| 32 | private static final String TAG = "CachedBluetoothDeviceManager"; |
| 33 | private static final boolean DEBUG = Utils.D; |
| 34 | |
| 35 | private Context mContext; |
| 36 | private final List<CachedBluetoothDevice> mCachedDevices = |
| 37 | new ArrayList<CachedBluetoothDevice>(); |
Jason Monk | be3c5db | 2015-02-04 13:00:55 -0500 | [diff] [blame] | 38 | private final LocalBluetoothManager mBtManager; |
Jason Monk | 7ce96b9 | 2015-02-02 11:27:58 -0500 | [diff] [blame] | 39 | |
Jason Monk | be3c5db | 2015-02-04 13:00:55 -0500 | [diff] [blame] | 40 | CachedBluetoothDeviceManager(Context context, LocalBluetoothManager localBtManager) { |
Jason Monk | 7ce96b9 | 2015-02-02 11:27:58 -0500 | [diff] [blame] | 41 | mContext = context; |
Jason Monk | be3c5db | 2015-02-04 13:00:55 -0500 | [diff] [blame] | 42 | mBtManager = localBtManager; |
Jason Monk | 7ce96b9 | 2015-02-02 11:27:58 -0500 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | public synchronized Collection<CachedBluetoothDevice> getCachedDevicesCopy() { |
| 46 | return new ArrayList<CachedBluetoothDevice>(mCachedDevices); |
| 47 | } |
| 48 | |
| 49 | public static boolean onDeviceDisappeared(CachedBluetoothDevice cachedDevice) { |
| 50 | cachedDevice.setVisible(false); |
| 51 | return cachedDevice.getBondState() == BluetoothDevice.BOND_NONE; |
| 52 | } |
| 53 | |
| 54 | public void onDeviceNameUpdated(BluetoothDevice device) { |
| 55 | CachedBluetoothDevice cachedDevice = findDevice(device); |
| 56 | if (cachedDevice != null) { |
| 57 | cachedDevice.refreshName(); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Search for existing {@link CachedBluetoothDevice} or return null |
| 63 | * if this device isn't in the cache. Use {@link #addDevice} |
| 64 | * to create and return a new {@link CachedBluetoothDevice} for |
| 65 | * a newly discovered {@link BluetoothDevice}. |
| 66 | * |
| 67 | * @param device the address of the Bluetooth device |
| 68 | * @return the cached device object for this device, or null if it has |
| 69 | * not been previously seen |
| 70 | */ |
| 71 | public CachedBluetoothDevice findDevice(BluetoothDevice device) { |
| 72 | for (CachedBluetoothDevice cachedDevice : mCachedDevices) { |
| 73 | if (cachedDevice.getDevice().equals(device)) { |
| 74 | return cachedDevice; |
| 75 | } |
| 76 | } |
| 77 | return null; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Create and return a new {@link CachedBluetoothDevice}. This assumes |
| 82 | * that {@link #findDevice} has already been called and returned null. |
| 83 | * @param device the address of the new Bluetooth device |
| 84 | * @return the newly created CachedBluetoothDevice object |
| 85 | */ |
| 86 | public CachedBluetoothDevice addDevice(LocalBluetoothAdapter adapter, |
| 87 | LocalBluetoothProfileManager profileManager, |
| 88 | BluetoothDevice device) { |
| 89 | CachedBluetoothDevice newDevice = new CachedBluetoothDevice(mContext, adapter, |
| 90 | profileManager, device); |
| 91 | synchronized (mCachedDevices) { |
| 92 | mCachedDevices.add(newDevice); |
Jason Monk | be3c5db | 2015-02-04 13:00:55 -0500 | [diff] [blame] | 93 | mBtManager.getEventManager().dispatchDeviceAdded(newDevice); |
Jason Monk | 7ce96b9 | 2015-02-02 11:27:58 -0500 | [diff] [blame] | 94 | } |
| 95 | return newDevice; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Attempts to get the name of a remote device, otherwise returns the address. |
| 100 | * |
| 101 | * @param device The remote device. |
| 102 | * @return The name, or if unavailable, the address. |
| 103 | */ |
| 104 | public String getName(BluetoothDevice device) { |
| 105 | CachedBluetoothDevice cachedDevice = findDevice(device); |
| 106 | if (cachedDevice != null) { |
| 107 | return cachedDevice.getName(); |
| 108 | } |
| 109 | |
| 110 | String name = device.getAliasName(); |
| 111 | if (name != null) { |
| 112 | return name; |
| 113 | } |
| 114 | |
| 115 | return device.getAddress(); |
| 116 | } |
| 117 | |
| 118 | public synchronized void clearNonBondedDevices() { |
| 119 | for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| 120 | CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| 121 | if (cachedDevice.getBondState() != BluetoothDevice.BOND_BONDED) { |
| 122 | mCachedDevices.remove(i); |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | public synchronized void onScanningStateChanged(boolean started) { |
| 128 | if (!started) return; |
| 129 | |
| 130 | // If starting a new scan, clear old visibility |
| 131 | // Iterate in reverse order since devices may be removed. |
| 132 | for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| 133 | CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| 134 | cachedDevice.setVisible(false); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | public synchronized void onBtClassChanged(BluetoothDevice device) { |
| 139 | CachedBluetoothDevice cachedDevice = findDevice(device); |
| 140 | if (cachedDevice != null) { |
| 141 | cachedDevice.refreshBtClass(); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | public synchronized void onUuidChanged(BluetoothDevice device) { |
| 146 | CachedBluetoothDevice cachedDevice = findDevice(device); |
| 147 | if (cachedDevice != null) { |
| 148 | cachedDevice.onUuidChanged(); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | public synchronized void onBluetoothStateChanged(int bluetoothState) { |
| 153 | // When Bluetooth is turning off, we need to clear the non-bonded devices |
| 154 | // Otherwise, they end up showing up on the next BT enable |
| 155 | if (bluetoothState == BluetoothAdapter.STATE_TURNING_OFF) { |
| 156 | for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| 157 | CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| 158 | if (cachedDevice.getBondState() != BluetoothDevice.BOND_BONDED) { |
| 159 | cachedDevice.setVisible(false); |
| 160 | mCachedDevices.remove(i); |
| 161 | } else { |
| 162 | // For bonded devices, we need to clear the connection status so that |
| 163 | // when BT is enabled next time, device connection status shall be retrieved |
| 164 | // by making a binder call. |
| 165 | cachedDevice.clearProfileConnectionState(); |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | private void log(String msg) { |
| 171 | if (DEBUG) { |
| 172 | Log.d(TAG, msg); |
| 173 | } |
| 174 | } |
| 175 | } |