Client_UML.puml

@startuml

class analysis_unit{
+analysis_confirms_msg(type_code:str, msg:str)
+analysis_updates_msg(type_code:str, msg:str)
+analysis_errors_msg(type_code:str, msg:str)
+analysis_msg_main(msg:str)
}


logic --* analysis_unit
class logic{
+download_over_tcp_handler(sock:socket, filename:str)
+download_over_udp_handler(sock:socket, filename:str)
+files_list_handler(sock:socket)
+users_list_handler(sock:socket)
+send_msg_handler(sock:socket, msg_to_user, tar_username:str)
+send_msg_broadcast_handler(sock:socket, msg_to_everyone:str)
+disconnect_handler(sock:socket)
+logic(option:int, sock:socket, message=None, target=None, filename=None)
}

class RDT_Receiver{
 +KB:int
 +PORT
 + FILENAME: str
 + file:File
 + ADDRESS: str, int
 + sock:socket
 + WINDOW_SIZE:int
 + last_is_order:bool
 + files_textbox:Text
 + chat_window
 + per_lbl:Label
 + prog_bar: ProgressBar
 + FILE_SIZE:int
--
 + analysis_data(data:str)
 + calc_ack(seq:int)
 + build_ack_packet(ack:int)
 + main()
 + update_progress_bar(curr_bytes:int, total:int)
}



GUI --* RDT_Receiver
GUI --* logic

class GUI{
+set_entrance_layout()
+set_chat_layout()
+leave_chat()
+send_button(client_message: Text, to)
+send_message(client_message: Text, to)
+connect_to_chat(SERVER_IP: str, SERVER_PORT: str, USERNAME: str)
+exit()
+download_file(server_files_combobox: Combobox, protocol)
+receive_file_by_TCP(PORT:int, FILENAME:str, FILE_SIZE: int)
+update_progress_bar(curr_bytes:int, total:int)
+log_in_to_chat(sock:socket, username:str)
+listen_to_server(port:int, SERVER_IP:str)
+protocol_message_textbox(choice: int)
+center_label(textbox:Text, **kwargs)
+update_online_user_list()
+update_option_menu()
+update_server_files(files_combobox: Combobox)
+set_server_sock(sock:int)
+set_chat_textBox(text: Text)
+set_users_menu(users_menu)
+set_users_var(users_var)
+set_online_users_list(users_list: list)
+set_server_ip(server_ip)
+set_server_files(server_files)
+set_files_textBox(textBox: Text)
+set_username(username)
+set_progress_bar(progress_bar)
}

@enduml