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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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import org.libreoffice.impressremote.Globals;
import org.libreoffice.impressremote.communication.CommunicationService.State;
import android.content.Intent;
import android.util.Log;
/**
* Generic Client for the remote control. To implement a Client for a specific
* transport medium you must provide input and output streams (
* <code>mInputStream</code> and <code>mOutputStream</code> before calling any
* methods.
*/
public abstract class Client {
protected static final String CHARSET = "UTF-8";
protected InputStream mInputStream;
protected BufferedReader mReader;
protected OutputStream mOutputStream;
protected String mPin = "";
protected String mName = "";
private static Client latestInstance = null;
public abstract void closeConnection();
public abstract void validating() throws IOException;
private Receiver mReceiver;
protected Server mServer;
protected CommunicationService mCommunicationService;
protected Client(Server aServer,
CommunicationService aCommunicationService,
Receiver aReceiver) {
mServer = aServer;
mName = aServer.getName();
mCommunicationService = aCommunicationService;
mReceiver = aReceiver;
latestInstance = this;
}
protected void startListening() {
Thread t = new Thread() {
public void run() {
listen();
}
};
t.start();
}
private final void listen() {
try {
while (true) {
ArrayList<String> aList = new ArrayList<String>();
String aTemp;
// read until empty line
while ((aTemp = mReader.readLine()) != null
&& aTemp.length() != 0) {
aList.add(aTemp);
}
if (aTemp == null) {
Intent aIntent = new Intent(
mCommunicationService
.getApplicationContext(),
ReconnectionActivity.class);
aIntent.putExtra("server", mServer);
aIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mCommunicationService.getApplicationContext()
.startActivity(aIntent);
return;
}
mReceiver.parseCommand(aList);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e1) {
// TODO stream couldn't be opened.
e1.printStackTrace();
} finally {
onDisconnect();
}
}
public static String getPin() {
if (latestInstance != null) {
return latestInstance.mPin;
} else {
return "";
}
}
public static String getName() {
if (latestInstance != null) {
return latestInstance.mName;
} else {
return "";
}
}
/**
* Send a valid command to the Server.
*/
public void sendCommand(String command) {
try {
mOutputStream.write(command.getBytes(CHARSET));
} catch (UnsupportedEncodingException e) {
throw new Error("Specified network encoding [" + CHARSET
+ " not available.");
} catch (IOException e) {
// I.e. connection closed. This will be dealt with by the listening
// loop.
}
}
/**
* Called after the Client disconnects. Can be extended to allow for
* cleaning up bluetooth properties etc.
*/
protected void onDisconnect() {
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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