examples.chat
Class ChatAgent

java.lang.Object
  examples.chat.ChatAgent

All Implemented Interfaces:

ActionListener, EventListener, Resumable, Runnable, Serializable, WindowListener

public class ChatAgent

extends Object

implements Resumable, Serializable, ActionListener, WindowListener

This class is mobile code, which will migrate through the peer-network and enables user to exchange textmassages with each other.

Version:

"$Id: ChatAgent.java 1913 2007-08-08 02:41:53Z jpeters $"

Author:

Andreas Reuter

See Also:

Serialized Form

Field Summary

private JTextArea	convHist_
private JTextField	convInput_
private LinkedList	convList_
private int	convListIndex_
(package private) static boolean	DEBUG
private String	dest_
private JButton	destButton_
private JButton	exitButton_
private JButton	goButton_
private String	home_
private JFrame	initFrame_
private Object	lock_
private MobilityContext	mob_
private AgentCard	myCard_
private JComboBox	serverChoiceBox_
private String	source_
private JFrame	talkFrame_
private ArrayList	urls_

Constructor Summary

ChatAgent()
Creates an object of the class ChatAgent

Method Summary

void	actionPerformed(ActionEvent aEvent) Defines the specific action sequence of all buttons of this class
private ArrayList	findTargets() Get a list of all peers found in the VICINITY-network
private void	initGUI() Method enables the user to choose a chat-partner in the VICINITY-network
private boolean	isHome() Get a list of all peers found in the VICINITY-network
void	resume(ErrorCode err) After an agent was suspended on a peer, he will migrate to >null< and terminate.
void	run() This method will be executed after an agent has reached a peer.
private void	talkGUI() Method enables the user to create and read textmessages with th choosen chat-partner.
void	windowActivated(WindowEvent wEvent) Is not spezified in this program
void	windowClosed(WindowEvent wEvent) When window closed the agent will leave his locked state
void	windowClosing(WindowEvent wEvent) Dispose all windows and terminate agent
void	windowDeactivated(WindowEvent wEvent) Is not spezified in this program
void	windowDeiconified(WindowEvent wEvent) Is not spezified in this program
void	windowIconified(WindowEvent wEvent) Is not spezified in this program
void	windowOpened(WindowEvent wEvent) Is not spezified in this program

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

static final boolean DEBUG

See Also:

Constant Field Values

initFrame_

private transient JFrame initFrame_

talkFrame_

private transient JFrame talkFrame_

serverChoiceBox_

private transient JComboBox serverChoiceBox_

mob_

private transient MobilityContext mob_

destButton_

private transient JButton destButton_

goButton_

private transient JButton goButton_

exitButton_

private transient JButton exitButton_

convHist_

private transient JTextArea convHist_

convInput_

private transient JTextField convInput_

convList_

private LinkedList convList_

urls_

private ArrayList urls_

convListIndex_

private int convListIndex_

home_

private String home_

source_

private String source_

dest_

private String dest_

lock_

private Object lock_

myCard_

private AgentCard myCard_

Constructor Detail

ChatAgent

public ChatAgent()

Creates an object of the class ChatAgent

Method Detail

resume

public void resume(ErrorCode err)

After an agent was suspended on a peer, he will migrate to >null< and terminate.

Specified by:

resume in interface Resumable

Parameters:

err - ErrorCode Error, which is appeared during the program execution

run

public void run()

This method will be executed after an agent has reached a peer. The agents behaviour depends on some variable values

Specified by:

run in interface Runnable

Throws:

InterruptedException - Interrupts the wait-state of the agent

initGUI

private void initGUI()

Method enables the user to choose a chat-partner in the VICINITY-network

talkGUI

private void talkGUI()

Method enables the user to create and read textmessages with th choosen chat-partner.

Throws:

Exception - If a problem with the inet-addresses happens

actionPerformed

public void actionPerformed(ActionEvent aEvent)

Defines the specific action sequence of all buttons of this class

Specified by:

actionPerformed in interface ActionListener

Parameters:

aEvent - ActionEvent An event from one of the GUI components.

Throws:

Exception - If there are migration problems

windowClosed

public void windowClosed(WindowEvent wEvent)

When window closed the agent will leave his locked state

Specified by:

windowClosed in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

windowClosing

public void windowClosing(WindowEvent wEvent)

Dispose all windows and terminate agent

Specified by:

windowClosing in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

windowActivated

public void windowActivated(WindowEvent wEvent)

Is not spezified in this program

Specified by:

windowActivated in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

windowDeactivated

public void windowDeactivated(WindowEvent wEvent)

Is not spezified in this program

Specified by:

windowDeactivated in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

windowDeiconified

public void windowDeiconified(WindowEvent wEvent)

Is not spezified in this program

Specified by:

windowDeiconified in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

windowIconified

public void windowIconified(WindowEvent wEvent)

Is not spezified in this program

Specified by:

windowIconified in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

windowOpened

public void windowOpened(WindowEvent wEvent)

Is not spezified in this program

Specified by:

windowOpened in interface WindowListener

Parameters:

wEvent - WindowEvent An event from one of the windows.

isHome

private boolean isHome()

Get a list of all peers found in the VICINITY-network

Returns:

List of all peers which were found in the VICINITY network

findTargets

private ArrayList findTargets()

Get a list of all peers found in the VICINITY-network

Returns:

List of all peers which were found in the VICINITY network