ch.epfl.lpd.ids.client
Class ChatClient

java.lang.Object
  java.util.Observable
      ch.epfl.lpd.ids.client.ChatClient

All Implemented Interfaces:

IChatClient, Runnable

public class ChatClient
extends Observable
implements Runnable, IChatClient

This class represents a chat client. A chat client is responsible for creating its GUI as well as the two threads that will fetch new messages and the list of connected clients.

Author:

Sebastien Baehni

Field Summary

protected ClientListFetcher	clf The reference to the ClientListFetcher that is responsible for retrieving the list of the connected clients.
protected boolean	connected Boolean used to check is this client is connected to the server or not.
protected IWindowManager	iw The reference to the IWindowManager in order to correctly dispose the ressources when the client is closed.
protected IServer	server The reference to the IServer.
protected String	username The username of this chat client.

Constructor Summary

ChatClient(IServer server, IWindowManager iw)
Creates a new instance of ChatClient.

Method Summary

void	close() Method called by ClientGUI when the user close the chat GUI.
boolean	connect(String username) Method called by the ClientGUI when the user wants to connect to the server.
boolean	disconnect(String username) Method called by the ClientGUI when the user wants to disconnect from the IServer.
void	run() Method called when a new thread representing this client is started.
void	sendMessage(IMessage msg) Method called by the ClientGUI when the user wants to send a message to the other chat clients.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

server

protected IServer server

The reference to the IServer. This reference will be used to send and receive messages.

iw

protected IWindowManager iw

The reference to the IWindowManager in order to correctly dispose the ressources when the client is closed.

username

protected String username

The username of this chat client.

connected

protected boolean connected

Boolean used to check is this client is connected to the server or not.

clf

protected ClientListFetcher clf

The reference to the ClientListFetcher that is responsible for retrieving the list of the connected clients.

Constructor Detail

ChatClient

public ChatClient(IServer server,
                  IWindowManager iw)

Creates a new instance of ChatClient. This constructor basically creates the ClientGUI, the ClientListFetcher and initialize the MVC.

Parameters:

server - The IServer reference.

iw - The reference to the IWindowManager.

Method Detail

connect

public boolean connect(String username)

Method called by the ClientGUI when the user wants to connect to the server. This method calls the connect() method on the IServer

Specified by:

connect in interface IChatClient

Parameters:

username - The username of the client.

Returns:

True if the client was able to connect, false otherwise.

disconnect

public boolean disconnect(String username)

Method called by the ClientGUI when the user wants to disconnect from the IServer.

Specified by:

disconnect in interface IChatClient

Parameters:

username - The username of the client.

Returns:

True if the client was successfully disconnected, false otherwise.

sendMessage

public void sendMessage(IMessage msg)

Method called by the ClientGUI when the user wants to send a message to the other chat clients. This method creates a new IMessage and sends it to the server.

Specified by:

sendMessage in interface IChatClient

Parameters:

msg - The message as a IMessage.

close

public void close()

Method called by ClientGUI when the user close the chat GUI. This stops the different threads, disconnects from the server and calls the IWindowManager to inform it that it can release the ressources for this chat client.

Specified by:

close in interface IChatClient

run

public void run()

Method called when a new thread representing this client is started. This thread wait on its IBlockingQueue on the server until a new message is received. Once this message is received, it is put in the GUI.

Specified by:

run in interface Runnable