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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.List;
import android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.support.v4.content.LocalBroadcastManager;
import org.libreoffice.impressremote.util.Intents;
public class CommunicationService extends Service implements Runnable, MessagesListener {
public static enum State {
DISCONNECTED, SEARCHING, CONNECTING, CONNECTED
}
/**
* Used to protect all writes to mState, mStateDesired, and mServerDesired.
*/
private final Object mConnectionVariableMutex = new Object();
private State mState;
private State mStateDesired;
private Server mServerDesired;
private IBinder mBinder;
private ServersManager mServersManager;
private ServerConnection mServerConnection;
private MessagesReceiver mMessagesReceiver;
private CommandsTransmitter mCommandsTransmitter;
private SlideShow mSlideShow;
private Thread mThread;
@Override
public void onCreate() {
mState = State.DISCONNECTED;
mStateDesired = State.DISCONNECTED;
mServerDesired = null;
mBinder = new CBinder();
mServersManager = new ServersManager(this);
mSlideShow = new SlideShow();
mThread = new Thread(this);
mThread.start();
}
public class CBinder extends Binder {
public CommunicationService getService() {
return CommunicationService.this;
}
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
@Override
public void run() {
synchronized (this) {
while (true) {
// Condition
try {
wait();
} catch (InterruptedException e) {
// We have finished
return;
}
// Work
synchronized (mConnectionVariableMutex) {
if ((mStateDesired == State.CONNECTED) && (mState == State.CONNECTED)) {
closeConnection();
}
if ((mStateDesired == State.DISCONNECTED) && (mState == State.CONNECTED)) {
closeConnection();
}
if (mStateDesired == State.CONNECTED) {
mState = State.CONNECTING;
try {
openConnection();
}
catch (RuntimeException e) {
connectionFailed();
}
}
}
}
}
}
private void closeConnection() {
mServerConnection.close();
mState = State.DISCONNECTED;
}
private void openConnection() {
mServerConnection = buildServerConnection();
mMessagesReceiver = new MessagesReceiver(mServerConnection, this);
mCommandsTransmitter = new CommandsTransmitter(mServerConnection);
if (PairingProvider.isPairingNecessary(mServerDesired)) {
pair();
}
mState = State.CONNECTED;
}
private ServerConnection buildServerConnection() {
switch (mServerDesired.getProtocol()) {
case TCP:
return new TcpServerConnection(mServerDesired);
case BLUETOOTH:
return new BluetoothServerConnection(mServerDesired);
default:
throw new RuntimeException("Unknown desired protocol.");
}
}
private void pair() {
String aPairingDeviceName = PairingProvider.getPairingDeviceName(this);
String aPairingPin = PairingProvider.getPairingPin(this, mServerDesired);
mCommandsTransmitter.pair(aPairingDeviceName, aPairingPin);
}
private void connectionFailed() {
mState = State.DISCONNECTED;
Intent aIntent = Intents.buildConnectionFailedIntent();
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
public void startSearch() {
mState = State.SEARCHING;
if (BluetoothAdapter.getDefaultAdapter() != null) {
BluetoothAdapter.getDefaultAdapter().enable();
}
mServersManager.startServersSearch();
}
public void stopSearch() {
mServersManager.stopServersSearch();
if (BluetoothAdapter.getDefaultAdapter() != null) {
BluetoothAdapter.getDefaultAdapter().disable();
}
}
public List<Server> getServers() {
return mServersManager.getServers();
}
public void connectTo(Server aServer) {
synchronized (mConnectionVariableMutex) {
if (mState == State.SEARCHING) {
mServersManager.stopServersSearch();
mState = State.DISCONNECTED;
}
mServerDesired = aServer;
mStateDesired = State.CONNECTED;
synchronized (this) {
notify();
}
}
// TODO: connect
}
public void disconnect() {
synchronized (mConnectionVariableMutex) {
mStateDesired = State.DISCONNECTED;
synchronized (this) {
notify();
}
}
}
public CommandsTransmitter getTransmitter() {
return mCommandsTransmitter;
}
public SlideShow getSlideShow() {
return mSlideShow;
}
@Deprecated
public void addServer(String aAddress, String aName, boolean aRemember) {
mServersManager.addTcpServer(aAddress, aName);
}
public void addServer(String aAddress, String aName) {
mServersManager.addTcpServer(aAddress, aName);
}
public void removeServer(Server aServer) {
mServersManager.removeServer(aServer);
}
@Override
public void onPinValidation() {
String aPin = PairingProvider.getPairingPin(this, mServerDesired);
Intent aIntent = Intents.buildPairingValidationIntent(aPin);
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
@Override
public void onSuccessfulPairing() {
Intent aIntent = Intents.buildPairingSuccessfulIntent();
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
@Override
public void onSlideShowStart(int aSlidesCount, int aCurrentSlideIndex) {
mSlideShow.cleanUp();
mSlideShow.setSlidesCount(aSlidesCount);
Intent aIntent = Intents.buildSlideShowRunningIntent();
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
onSlideChanged(aCurrentSlideIndex);
}
@Override
public void onSlideShowFinish() {
mSlideShow.cleanUp();
Intent aIntent = Intents.buildSlideShowStoppedIntent();
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
@Override
public void onSlideChanged(int aCurrentSlideIndex) {
mSlideShow.setCurrentSlideIndex(aCurrentSlideIndex);
Intent aIntent = Intents.buildSlideChangedIntent(aCurrentSlideIndex);
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
@Override
public void onSlidePreview(int aSlideIndex, byte[] aPreview) {
mSlideShow.setSlidePreview(aSlideIndex, aPreview);
Intent aIntent = Intents.buildSlidePreviewIntent(aSlideIndex);
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
@Override
public void onSlideNotes(int aSlideIndex, String aNotes) {
mSlideShow.setSlideNotes(aSlideIndex, aNotes);
Intent aIntent = Intents.buildSlideNotesIntent(aSlideIndex);
LocalBroadcastManager.getInstance(this).sendBroadcast(aIntent);
}
@Override
public void onDestroy() {
stopSearch();
mThread.interrupt();
mThread = null;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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