| /* |
| * 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.settingslib.bluetooth; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothDevice; |
| import android.content.Context; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * CachedBluetoothDeviceManager manages the set of remote Bluetooth devices. |
| */ |
| public class CachedBluetoothDeviceManager { |
| private static final String TAG = "CachedBluetoothDeviceManager"; |
| private static final boolean DEBUG = BluetoothUtils.D; |
| |
| private Context mContext; |
| private final LocalBluetoothManager mBtManager; |
| |
| @VisibleForTesting |
| final List<CachedBluetoothDevice> mCachedDevices = new ArrayList<CachedBluetoothDevice>(); |
| @VisibleForTesting |
| HearingAidDeviceManager mHearingAidDeviceManager; |
| |
| CachedBluetoothDeviceManager(Context context, LocalBluetoothManager localBtManager) { |
| mContext = context; |
| mBtManager = localBtManager; |
| mHearingAidDeviceManager = new HearingAidDeviceManager(localBtManager, mCachedDevices); |
| } |
| |
| public synchronized Collection<CachedBluetoothDevice> getCachedDevicesCopy() { |
| return new ArrayList<>(mCachedDevices); |
| } |
| |
| public static boolean onDeviceDisappeared(CachedBluetoothDevice cachedDevice) { |
| cachedDevice.setJustDiscovered(false); |
| return cachedDevice.getBondState() == BluetoothDevice.BOND_NONE; |
| } |
| |
| public void onDeviceNameUpdated(BluetoothDevice device) { |
| CachedBluetoothDevice cachedDevice = findDevice(device); |
| if (cachedDevice != null) { |
| cachedDevice.refreshName(); |
| } |
| } |
| |
| /** |
| * Search for existing {@link CachedBluetoothDevice} or return null |
| * if this device isn't in the cache. Use {@link #addDevice} |
| * to create and return a new {@link CachedBluetoothDevice} for |
| * a newly discovered {@link BluetoothDevice}. |
| * |
| * @param device the address of the Bluetooth device |
| * @return the cached device object for this device, or null if it has |
| * not been previously seen |
| */ |
| public synchronized CachedBluetoothDevice findDevice(BluetoothDevice device) { |
| for (CachedBluetoothDevice cachedDevice : mCachedDevices) { |
| if (cachedDevice.getDevice().equals(device)) { |
| return cachedDevice; |
| } |
| // Check sub devices if it exists |
| CachedBluetoothDevice subDevice = cachedDevice.getSubDevice(); |
| if (subDevice != null && subDevice.getDevice().equals(device)) { |
| return subDevice; |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Create and return a new {@link CachedBluetoothDevice}. This assumes |
| * that {@link #findDevice} has already been called and returned null. |
| * @param device the address of the new Bluetooth device |
| * @return the newly created CachedBluetoothDevice object |
| */ |
| public CachedBluetoothDevice addDevice(BluetoothDevice device) { |
| CachedBluetoothDevice newDevice; |
| final LocalBluetoothProfileManager profileManager = mBtManager.getProfileManager(); |
| synchronized (this) { |
| newDevice = findDevice(device); |
| if (newDevice == null) { |
| newDevice = new CachedBluetoothDevice(mContext, profileManager, device); |
| mHearingAidDeviceManager.initHearingAidDeviceIfNeeded(newDevice); |
| if (!mHearingAidDeviceManager.setSubDeviceIfNeeded(newDevice)) { |
| mCachedDevices.add(newDevice); |
| mBtManager.getEventManager().dispatchDeviceAdded(newDevice); |
| } |
| } |
| } |
| |
| return newDevice; |
| } |
| |
| /** |
| * Returns device summary of the pair of the hearing aid passed as the parameter. |
| * |
| * @param CachedBluetoothDevice device |
| * @return Device summary, or if the pair does not exist or if it is not a hearing aid, |
| * then {@code null}. |
| */ |
| public synchronized String getSubDeviceSummary(CachedBluetoothDevice device) { |
| CachedBluetoothDevice subDevice = device.getSubDevice(); |
| if (subDevice != null && subDevice.isConnected()) { |
| return subDevice.getConnectionSummary(); |
| } |
| return null; |
| } |
| |
| /** |
| * Search for existing sub device {@link CachedBluetoothDevice}. |
| * |
| * @param device the address of the Bluetooth device |
| * @return true for found sub device or false. |
| */ |
| public synchronized boolean isSubDevice(BluetoothDevice device) { |
| for (CachedBluetoothDevice cachedDevice : mCachedDevices) { |
| if (!cachedDevice.getDevice().equals(device)) { |
| // Check sub devices if it exists |
| CachedBluetoothDevice subDevice = cachedDevice.getSubDevice(); |
| if (subDevice != null && subDevice.getDevice().equals(device)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Updates the Hearing Aid devices; specifically the HiSyncId's. This routine is called when the |
| * Hearing Aid Service is connected and the HiSyncId's are now available. |
| * @param LocalBluetoothProfileManager profileManager |
| */ |
| public synchronized void updateHearingAidsDevices() { |
| mHearingAidDeviceManager.updateHearingAidsDevices(); |
| } |
| |
| /** |
| * Attempts to get the name of a remote device, otherwise returns the address. |
| * |
| * @param device The remote device. |
| * @return The name, or if unavailable, the address. |
| */ |
| public String getName(BluetoothDevice device) { |
| CachedBluetoothDevice cachedDevice = findDevice(device); |
| if (cachedDevice != null && cachedDevice.getName() != null) { |
| return cachedDevice.getName(); |
| } |
| |
| String name = device.getAlias(); |
| if (name != null) { |
| return name; |
| } |
| |
| return device.getAddress(); |
| } |
| |
| public synchronized void clearNonBondedDevices() { |
| clearNonBondedSubDevices(); |
| mCachedDevices.removeIf(cachedDevice |
| -> cachedDevice.getBondState() == BluetoothDevice.BOND_NONE); |
| } |
| |
| private void clearNonBondedSubDevices() { |
| for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| CachedBluetoothDevice subDevice = cachedDevice.getSubDevice(); |
| if (subDevice != null |
| && subDevice.getDevice().getBondState() == BluetoothDevice.BOND_NONE) { |
| // Sub device exists and it is not bonded |
| cachedDevice.setSubDevice(null); |
| } |
| } |
| } |
| |
| public synchronized void clearAllDevices() { |
| for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| mCachedDevices.remove(i); |
| } |
| } |
| |
| public synchronized void onScanningStateChanged(boolean started) { |
| if (!started) return; |
| // If starting a new scan, clear old visibility |
| // Iterate in reverse order since devices may be removed. |
| for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| cachedDevice.setJustDiscovered(false); |
| final CachedBluetoothDevice subDevice = cachedDevice.getSubDevice(); |
| if (subDevice != null) { |
| subDevice.setJustDiscovered(false); |
| } |
| } |
| } |
| |
| public synchronized void onBluetoothStateChanged(int bluetoothState) { |
| // When Bluetooth is turning off, we need to clear the non-bonded devices |
| // Otherwise, they end up showing up on the next BT enable |
| if (bluetoothState == BluetoothAdapter.STATE_TURNING_OFF) { |
| for (int i = mCachedDevices.size() - 1; i >= 0; i--) { |
| CachedBluetoothDevice cachedDevice = mCachedDevices.get(i); |
| CachedBluetoothDevice subDevice = cachedDevice.getSubDevice(); |
| if (subDevice != null) { |
| if (subDevice.getBondState() != BluetoothDevice.BOND_BONDED) { |
| cachedDevice.setSubDevice(null); |
| } |
| } |
| if (cachedDevice.getBondState() != BluetoothDevice.BOND_BONDED) { |
| cachedDevice.setJustDiscovered(false); |
| mCachedDevices.remove(i); |
| } |
| //Clear if there any Tws battery info on BT turning OFF |
| cachedDevice.mTwspBatteryState = -1; |
| cachedDevice.mTwspBatteryLevel = -1; |
| } |
| } |
| } |
| |
| public synchronized boolean onProfileConnectionStateChangedIfProcessed(CachedBluetoothDevice |
| cachedDevice, int state) { |
| return mHearingAidDeviceManager.onProfileConnectionStateChangedIfProcessed(cachedDevice, |
| state); |
| } |
| |
| public synchronized void onDeviceUnpaired(CachedBluetoothDevice device) { |
| CachedBluetoothDevice mainDevice = mHearingAidDeviceManager.findMainDevice(device); |
| CachedBluetoothDevice subDevice = device.getSubDevice(); |
| if (subDevice != null) { |
| // Main device is unpaired, to unpair sub device |
| subDevice.unpair(); |
| device.setSubDevice(null); |
| } else if (mainDevice != null) { |
| // Sub device unpaired, to unpair main device |
| mainDevice.unpair(); |
| mainDevice.setSubDevice(null); |
| } |
| } |
| |
| private void log(String msg) { |
| if (DEBUG) { |
| Log.d(TAG, msg); |
| } |
| } |
| } |