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Squeamish: An AOL Instant Messenger Client

July 29, 2001

Squeamish:

Squeamish is an AOL Instant Messaneger Clone in Squeak written by Dustin Holmes and Ryan Champney as a extra credit project. Squeamish uses the open AIM/TOC server to gain access to AOL Instant Messenger commands. Any user on any client can be contacted. Although all basic IMing and BuddyList features are supported Squeamish is still a work in progress.

Authors

Ryan Champney ( SqueamishMadeMeABetterPerson@champney.com )

Dustin Holmes ( SqueamishIsMyHero@champney.com )

How To Use

Any user that has an AOL/AIM account can sign on using Squeamish ( a name can be registerered for free here). Download the changeset here, unzip it where you have your image and file it in. To run Squeamish open a workspace and type "SignonWindow new" and do-it. Enter your name and password in the appropiate spaces and click Sign On. A buddy list window should pop up with all buddy's that are online. To add a buddy "menu-click" on the buddy list and choose "Add Buddy...". To send a message click on a users name in the buddy list and a message window will appear. Type your message in the lower box and click send.

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DESIGN

OOA CRC Cards

AIMProtocol

Responsibility	Collaborator
Decodes input client connection	IMUser
Encodes ouput	IMUser

BuddyList

Responsibility	Collaborator
Receives List of Buddies from TOC Server	AIMProtocol
opens a message windows	MesgWindow
opens when signon completes	SignonWindow

IMClientConnection

Responsibility	Collaborator
Connects to AOL Toc Server
Acts as a buffer between Server and User	IMUser

IMUser

Responsibility	Collaborator
Holds all of the data a user session would require
Reads data from Connection Buffer	IMClientConnection
sends and receives data to protocol class	AIMProtocol
Acts as a Model to the Buddy List	BuddyList
Acts as a model to the MesgWindow	MesgWindow
maintains activw windows	MesgWindow

MesgWindow

Responsibility	Collaborator
Displays messages history
displays messages when received	IMUser
sends messages	IMUser

SignonWindow

Responsibility	Collaborator
Makes an IM user	IMUser
calls user method connect	IMUser

OOD

AIMProtocol
Receives Messages From: IMUser Sends Messages To: IMUser
Attributes (decoding blocks) (encoding blocks)
Services command: constant: decode: encode: roast: server:

AIMProtocol

Receives Messages From: IMUser

Sends Messages To: IMUser

Attributes

(decoding blocks)
(encoding blocks)

Services

command:
constant:
decode:
encode:
roast:
server:

BuddyList
Receives Messages From: IMUser Sends Messages To: IMUser
Attributes list user win
Services addUser buddyListMenu: getContactList logout openWithUser: perform:orSendTo: targetGetUser: windowIsClosing

BuddyList

Receives Messages From: IMUser

Sends Messages To: IMUser

Attributes

list
user
win

Services

addUser
buddyListMenu:
getContactList
logout
openWithUser:
perform:orSendTo:
targetGetUser:
windowIsClosing

IMClientConnection
Receives Messages From: IMUser Sends Messages To: IMUser
Attributes alive done host keppalive lastTime port receiveBuffer receiver sendBuffer serverThread sock
Services addToSendBuffer: connect:port delayForSeconds: destroy iniitialize isConnected receiveData: sendIfData

IMClientConnection

Receives Messages From: IMUser

Sends Messages To: IMUser

Attributes

alive
done
host
keppalive
lastTime
port
receiveBuffer
receiver
sendBuffer
serverThread
sock

Services

addToSendBuffer:
connect:port
delayForSeconds:
destroy
iniitialize
isConnected
receiveData:
sendIfData

IMUser
Part of: SignonWindow Receives Messages From: AIMProtocol, BuddyList, IMClientConnection, MesgWindow Sends Messages To: AIMProtocol, BuddyList, IMClientConnection, MesgWindow
Attributes activeChats aimName aimpassword alive awayMessage contactList errorCode evil group hasUI idleTime message name observers port sendingAimName sendingMessage signOnTime status targetIdentifier targetScreenName
Services addBuddy:atGroup: alive doStatus: errorCode: errorMessage:level: errorWith: extractConfig: formatMsg: hasUI iniitialize logout

IMUser

Part of: SignonWindow

Receives Messages From: AIMProtocol, BuddyList, IMClientConnection, MesgWindow

Sends Messages To: AIMProtocol, BuddyList, IMClientConnection, MesgWindow

Attributes

activeChats
aimName
aimpassword
alive
awayMessage
contactList
errorCode
evil
group
hasUI
idleTime
message
name
observers
port
sendingAimName
sendingMessage
signOnTime
status
targetIdentifier
targetScreenName

Services

addBuddy:atGroup:
alive
doStatus:
errorCode:
errorMessage:level:
errorWith:
extractConfig:
formatMsg:
hasUI
iniitialize
logout

MesgWindow
Receives Messages From: IMUser Sends Messages To: IMUser
Attributes buddy curText history output user win
Services addMsg: delete initialExtent sendMsg to:from:

MesgWindow

Receives Messages From: IMUser

Sends Messages To: IMUser

Attributes

buddy
curText
history
output
user
win

Services

addMsg:
delete
initialExtent
sendMsg
to:from:

SignonWindow
Has Parts: IMUser
Attributes pass un user win
Services destroy getPicture openAsMorph signOn

SignonWindow

Has Parts: IMUser

Attributes

pass
un
user
win

Services

destroy
getPicture
openAsMorph
signOn

OOD Diagram

Links to this Page

Cases last edited on 30 July 2011 at 2:33 am by r59h132.res.gatech.edu
Collaboration Tools last edited on 12 September 2005 at 12:47 pm by r36h51.res.gatech.edu
Ryan Champney last edited on 27 September 2001 at 1:21 pm by client16201.atl.mediaone.net