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# Copyright 2010 Le Coz Florent <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 GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# Poezio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Poezio. If not, see <http://www.gnu.org/licenses/>.
"""
Define the TextBuffer class
"""
from message import Message
from datetime import datetime
import theme
class TextBuffer(object):
"""
This class just keep trace of messages, in a list with various
informations and attributes.
"""
def __init__(self):
self.messages = [] # Message objects
self.pos = 0
def add_message(self, txt, time=None, nickname=None, colorized=False):
color = theme.COLOR_NORMAL_TEXT
user = None
time = time or datetime.now()
if self.pos: # avoid scrolling of one line when one line is received
self.pos += 1
self.messages.append(Message(txt, time, nickname, user, color, colorized))
def remove_line_separator(self):
"""
Remove the line separator
"""
if None in self.messages:
self.messages.remove(None)
def add_line_separator(self):
"""
add a line separator at the end of messages list
"""
if None not in self.messages:
self.messages.append(None)
def scroll_up(self, dist=14):
# The pos can grow a lot over the top of the number of
# available lines, it will be fixed on the next refresh of the
# screen anyway
self.pos += dist
def scroll_down(self, dist=14):
self.pos -= dist
if self.pos <= 0:
self.pos = 0
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