# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org> # # This file is part of Poezio. # # Poezio is free software: you can redistribute it and/or modify # it under the terms of the zlib license. See the COPYING file. """ Define the TextBuffer class """ import logging log = logging.getLogger(__name__) import collections from datetime import datetime from config import config Message = collections.namedtuple('Message', 'txt nick_color time str_time nickname user') class TextBuffer(object): """ This class just keep trace of messages, in a list with various informations and attributes. """ def __init__(self, messages_nb_limit=config.get('max_messages_in_memory', 2048)): self.messages_nb_limit = messages_nb_limit self.messages = [] # Message objects self.windows = [] # we keep track of one or more windows # so we can pass the new messages to them, as they are added, so # they (the windows) can build the lines from the new message def add_window(self, win): self.windows.append(win) def add_message(self, txt, time=None, nickname=None, nick_color=None, history=None): time = time or datetime.now() msg = Message(txt='%s\x19o'%(txt.replace('\t', ' '),), nick_color=nick_color, time=time, str_time=time.strftime("%Y-%m-%d %H:%M:%S")\ if history else time.strftime("%H:%M:%S"),\ nickname=nickname, user=None) self.messages.append(msg) while len(self.messages) > self.messages_nb_limit: self.messages.pop(0) ret_val = None for window in self.windows: # make the associated windows # build the lines from the new message nb = window.build_new_message(msg) if ret_val is None: ret_val = nb if window.pos != 0: window.scroll_up(nb) return ret_val or 1 def del_window(self, win): self.windows.remove(win) def __del__(self): log.debug('** Deleting %s messages from textbuffer' % (len(self.messages)))