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/*
* 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 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 = Utils.D;
private Context mContext;
private final List<CachedBluetoothDevice> mCachedDevices =
new ArrayList<CachedBluetoothDevice>();
private final LocalBluetoothManager mBtManager;
CachedBluetoothDeviceManager(Context context, LocalBluetoothManager localBtManager) {
mContext = context;
mBtManager = localBtManager;
}
public synchronized Collection<CachedBluetoothDevice> getCachedDevicesCopy() {
return new ArrayList<CachedBluetoothDevice>(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 CachedBluetoothDevice findDevice(BluetoothDevice device) {
for (CachedBluetoothDevice cachedDevice : mCachedDevices) {
if (cachedDevice.getDevice().equals(device)) {
return cachedDevice;
}
}
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(LocalBluetoothAdapter adapter,
LocalBluetoothProfileManager profileManager,
BluetoothDevice device) {
CachedBluetoothDevice newDevice = new CachedBluetoothDevice(mContext, adapter,
profileManager, device);
synchronized (mCachedDevices) {
mCachedDevices.add(newDevice);
mBtManager.getEventManager().dispatchDeviceAdded(newDevice);
}
return newDevice;
}
/**
* 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.getAliasName();
if (name != null) {
return name;
}
return device.getAddress();
}
public synchronized void clearNonBondedDevices() {
for (int i = mCachedDevices.size() - 1; i >= 0; i--) {
CachedBluetoothDevice cachedDevice = mCachedDevices.get(i);
if (cachedDevice.getBondState() == BluetoothDevice.BOND_NONE) {
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);
}
}
public synchronized void onBtClassChanged(BluetoothDevice device) {
CachedBluetoothDevice cachedDevice = findDevice(device);
if (cachedDevice != null) {
cachedDevice.refreshBtClass();
}
}
public synchronized void onUuidChanged(BluetoothDevice device) {
CachedBluetoothDevice cachedDevice = findDevice(device);
if (cachedDevice != null) {
cachedDevice.onUuidChanged();
}
}
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);
if (cachedDevice.getBondState() != BluetoothDevice.BOND_BONDED) {
cachedDevice.setJustDiscovered(false);
mCachedDevices.remove(i);
} else {
// For bonded devices, we need to clear the connection status so that
// when BT is enabled next time, device connection status shall be retrieved
// by making a binder call.
cachedDevice.clearProfileConnectionState();
}
}
}
}
private void log(String msg) {
if (DEBUG) {
Log.d(TAG, msg);
}
}
}
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