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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
package org.libreoffice.impressremote.communication;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import org.libreoffice.impressremote.util.Intents;
class BluetoothServersFinder extends BroadcastReceiver implements ServersFinder {
private static final BluetoothAdapter btAdapter = BluetoothAdapter.getDefaultAdapter();
private final Context mContext;
private final Map<String, Server> mServers;
public BluetoothServersFinder(Context aContext) {
mContext = aContext;
mServers = new HashMap<String, Server>();
}
@Override
public void startSearch() {
if (btAdapter == null) {
return;
}
IntentFilter aBluetoothActionsFilter = new IntentFilter();
aBluetoothActionsFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
aBluetoothActionsFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
aBluetoothActionsFilter.addAction(BluetoothDevice.ACTION_FOUND);
mContext.registerReceiver(this, aBluetoothActionsFilter);
Set<BluetoothDevice> pairedDevices = btAdapter.getBondedDevices();
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
addServer(device);
}
} else {
if (btAdapter.isDiscovering()) {
return;
}
btAdapter.startDiscovery();
}
}
@Override
public void onReceive(Context aContext, Intent aIntent) {
if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(aIntent.getAction())) {
switch (aIntent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 0)) {
case BluetoothAdapter.STATE_ON:
startSearch();
return;
default:
return;
}
}
if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(aIntent.getAction())) {
LocalBroadcastManager.getInstance(mContext)
.sendBroadcast(new Intent(Intents.Actions.BT_DISCOVERY_CHANGED));
return;
}
if (BluetoothDevice.ACTION_FOUND.equals(aIntent.getAction())) {
BluetoothDevice aBluetoothDevice = aIntent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
addServer(aBluetoothDevice);
}
}
private void addServer(BluetoothDevice aBluetoothDevice) {
Server.Type aServerType = buildServerType(aBluetoothDevice);
String aServerAddress = aBluetoothDevice.getAddress();
String aServerName = aBluetoothDevice.getName();
Server aServer = Server.newBluetoothInstance(aServerType, aServerAddress, aServerName);
mServers.put(aServer.getAddress(), aServer);
Intent bIntent = Intents.buildServersListChangedIntent();
LocalBroadcastManager.getInstance(mContext).sendBroadcast(bIntent);
}
private Server.Type buildServerType(BluetoothDevice aBluetoothDevice) {
BluetoothClass btClass = aBluetoothDevice.getBluetoothClass();
if (null == btClass) {
return Server.Type.UNDEFINED;
}
switch (btClass.getMajorDeviceClass()) {
case BluetoothClass.Device.Major.COMPUTER:
return Server.Type.COMPUTER;
case BluetoothClass.Device.Major.PHONE:
return Server.Type.PHONE;
default:
return Server.Type.UNDEFINED;
}
}
@Override
public void stopSearch() {
if (btAdapter == null) {
return;
}
try {
mContext.unregisterReceiver(this);
} catch (IllegalArgumentException e) {
// Receiver not registered.
// Fixed in Honeycomb: Android’s issue #6191.
}
btAdapter.cancelDiscovery();
}
@Override
public List<Server> getServers() {
return new ArrayList<Server>(mServers.values());
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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