windows.py 47.1 KB
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# Copyright 2010 Le Coz Florent <louiz@louiz.org>
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#
# 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/>.

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"""
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Define all the windows.
A window is a little part of the screen, for example the input window,
the text window, the roster window, etc.
A Tab (see tab.py) is composed of multiple Windows
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"""

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from gettext import (bindtextdomain, textdomain, bind_textdomain_codeset,
                     gettext as _)
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from os.path import isfile
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import logging
log = logging.getLogger(__name__)

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import locale
locale.setlocale(locale.LC_ALL, '')

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import shlex
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import curses
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from config import config
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from threading import Lock

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from contact import Contact, Resource
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from roster import RosterGroup, roster
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from message import Line
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from tabs import MIN_WIDTH, MIN_HEIGHT
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from sleekxmpp.xmlstream.stanzabase import JID

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import theme
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g_lock = Lock()

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class Win(object):
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    def __init__(self):
        pass
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    def _resize(self, height, width, y, x, parent_win):
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        self.height, self.width, self.x, self.y = height, width, x, y
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        self._win = curses.newwin(height, width, y, x)

    def _refresh(self):
        self._win.noutrefresh()
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    def addnstr(self, *args):
        """
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        Safe call to addnstr
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        """
        try:
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            self._win.addnstr(*args)
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        except:
            pass

    def addstr(self, *args):
        """
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        Safe call to addstr
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        """
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        try:
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            self._win.addstr(*args)
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        except:
            pass
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    def finish_line(self, color):
        """
        Write colored spaces until the end of line
        """
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        (y, x) = self._win.getyx()
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        size = self.width-x
        self.addnstr(' '*size, size, curses.color_pair(color))

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class UserList(Win):
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    def __init__(self):
        Win.__init__(self)
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        self.color_role = {'moderator': theme.COLOR_USER_MODERATOR,
                           'participant':theme.COLOR_USER_PARTICIPANT,
                           'visitor':theme.COLOR_USER_VISITOR,
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                           'none':theme.COLOR_USER_NONE,
                           '':theme.COLOR_USER_NONE
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                           }
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        self.color_show = {'xa':theme.COLOR_STATUS_XA,
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                           'none':theme.COLOR_STATUS_NONE,
                           '':theme.COLOR_STATUS_NONE,
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                           'dnd':theme.COLOR_STATUS_DND,
                           'away':theme.COLOR_STATUS_AWAY,
                           'chat':theme.COLOR_STATUS_CHAT
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                           }
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    def refresh(self, users):
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        with g_lock:
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            self._win.erase()
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            y = 0
            for user in sorted(users):
                if not user.role in self.color_role:
                    role_col = theme.COLOR_USER_NONE
                else:
                    role_col = self.color_role[user.role]
                if not user.show in self.color_show:
                    show_col = theme.COLOR_STATUS_NONE
                else:
                    show_col = self.color_show[user.show]
                self.addstr(y, 0, theme.CHAR_STATUS, curses.color_pair(show_col))
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                self.addnstr(y, 1, user.nick, self.width-1, curses.color_pair(role_col))
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                y += 1
                if y == self.height:
                    break
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            self._refresh()
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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        self._win.attron(curses.color_pair(theme.COLOR_VERTICAL_SEPARATOR))
        self._win.vline(0, 0, curses.ACS_VLINE, self.height)
        self._win.attroff(curses.color_pair(theme.COLOR_VERTICAL_SEPARATOR))
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class Topic(Win):
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    def __init__(self):
        Win.__init__(self)
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self, topic):
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        with g_lock:
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            self._win.erase()
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            self.addstr(0, 0, topic[:self.width-1], curses.color_pair(theme.COLOR_TOPIC_BAR))
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            (y, x) = self._win.getyx()
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            remaining_size = self.width - x
            if remaining_size:
                self.addnstr(' '*remaining_size, remaining_size,
                             curses.color_pair(theme.COLOR_INFORMATION_BAR))
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            self._refresh()
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class GlobalInfoBar(Win):
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    def __init__(self):
        Win.__init__(self)
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self, tabs, current):
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        def compare_room(a):
            # return a.nb - b.nb
            return a.nb
        comp = lambda x: x.nb
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        with g_lock:
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            self._win.erase()
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            self.addstr(0, 0, "[", curses.color_pair(theme.COLOR_INFORMATION_BAR))
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            sorted_tabs = sorted(tabs, key=comp)
            for tab in sorted_tabs:
                color = tab.get_color_state()
                try:
                    self.addstr("%s" % str(tab.nb), curses.color_pair(color))
                    self.addstr("|", curses.color_pair(theme.COLOR_INFORMATION_BAR))
                except:             # end of line
                    break
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            (y, x) = self._win.getyx()
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            self.addstr(y, x-1, '] ', curses.color_pair(theme.COLOR_INFORMATION_BAR))
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            (y, x) = self._win.getyx()
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            remaining_size = self.width - x
            self.addnstr(' '*remaining_size, remaining_size,
                         curses.color_pair(theme.COLOR_INFORMATION_BAR))
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            self._refresh()
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class InfoWin(Win):
    """
    Base class for all the *InfoWin, used in various tabs. For example
    MucInfoWin, etc. Provides some useful methods.
    """
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    def __init__(self):
        Win.__init__(self)
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    def print_scroll_position(self, text_buffer):
        """
        Print, link in Weechat, a -PLUS(n)- where n
        is the number of available lines to scroll
        down
        """
        if text_buffer.pos > 0:
            plus = ' -PLUS(%s)-' % text_buffer.pos
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            self.addstr(plus, curses.color_pair(theme.COLOR_SCROLLABLE_NUMBER) | curses.A_BOLD)
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class PrivateInfoWin(InfoWin):
    """
    The live above the information window, displaying informations
    about the MUC user we are talking to
    """
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    def __init__(self):
        InfoWin.__init__(self)
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self, room):
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        with g_lock:
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            self._win.erase()
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            self.write_room_name(room)
            self.print_scroll_position(room)
            self.finish_line(theme.COLOR_INFORMATION_BAR)
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            self._refresh()
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    def write_room_name(self, room):
        (room_name, nick) = room.name.split('/', 1)
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        self.addstr(nick, curses.color_pair(13))
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        txt = ' from room %s' % room_name
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        self.addstr(txt, curses.color_pair(theme.COLOR_INFORMATION_BAR))
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class ConversationInfoWin(InfoWin):
    """
    The line above the information window, displaying informations
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    about the user we are talking to
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    """
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    color_show = {'xa':theme.COLOR_STATUS_XA,
                  'none':theme.COLOR_STATUS_ONLINE,
                  '':theme.COLOR_STATUS_ONLINE,
                  'available':theme.COLOR_STATUS_ONLINE,
                  'dnd':theme.COLOR_STATUS_DND,
                  'away':theme.COLOR_STATUS_AWAY,
                  'chat':theme.COLOR_STATUS_CHAT,
                  'unavailable':theme.COLOR_STATUS_UNAVAILABLE
                  }

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    def __init__(self):
        InfoWin.__init__(self)
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self, jid, contact, text_buffer):
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        # contact can be None, if we receive a message
        # from someone not in our roster. In this case, we display
        # only the maximum information from the message we can get.
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        jid = JID(jid)
        if contact:
            if jid.resource:
                resource = contact.get_resource_by_fulljid(jid.full)
            else:
                resource = contact.get_highest_priority_resource()
        else:
            resource = None
        # if contact is None, then resource is None too: user is not in the roster
        # so we don't know almost anything about it
        # If contact is a Contact, then
        # resource can now be a Resource: user is in the roster and online
        # or resource is None: user is in the roster but offline
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        with g_lock:
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            self._win.erase()
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            self.write_contact_jid(jid)
            self.write_contact_informations(contact)
            self.write_resource_information(resource)
            self.print_scroll_position(text_buffer)
            self.finish_line(theme.COLOR_INFORMATION_BAR)
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            self._refresh()
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    def write_resource_information(self, resource):
        """
        Write the informations about the resource
        """
        if not resource:
            presence = "unavailable"
        else:
            presence = resource.get_presence()
        color = RosterWin.color_show[presence]
        self.addstr('[', curses.color_pair(theme.COLOR_INFORMATION_BAR))
        self.addstr(" ", curses.color_pair(color))
        self.addstr(']', curses.color_pair(theme.COLOR_INFORMATION_BAR))

    def write_contact_informations(self, contact):
        """
        Write the informations about the contact
        """
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        if not contact:
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            self.addstr("(contact not in roster)", curses.color_pair(theme.COLOR_INFORMATION_BAR))
            return
        display_name = contact.get_name() or contact.get_bare_jid()
        self.addstr('%s '%(display_name), curses.color_pair(theme.COLOR_INFORMATION_BAR))

    def write_contact_jid(self, jid):
        """
        Just write the jid that we are talking to
        """
        self.addstr('[', curses.color_pair(theme.COLOR_INFORMATION_BAR))
        self.addstr(jid.full, curses.color_pair(10))
        self.addstr('] ', curses.color_pair(theme.COLOR_INFORMATION_BAR))

class ConversationStatusMessageWin(InfoWin):
    """
    The upper bar displaying the status message of the contact
    """
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    def __init__(self):
        InfoWin.__init__(self)
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self, jid, contact):
        jid = JID(jid)
        if contact:
            if jid.resource:
                resource = contact.get_resource_by_fulljid(jid.full)
            else:
                resource = contact.get_highest_priority_resource()
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        else:
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            resource = None
        with g_lock:
            self._win.erase()
            if resource:
                self.write_status_message(resource)
            self.finish_line(theme.COLOR_INFORMATION_BAR)
            self._refresh()

    def write_status_message(self, resource):
        self.addstr(resource.get_status(), curses.color_pair(theme.COLOR_INFORMATION_BAR))
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class MucInfoWin(InfoWin):
    """
    The line just above the information window, displaying informations
    about the MUC we are viewing
    """
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    def __init__(self):
        InfoWin.__init__(self)
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self, room):
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        with g_lock:
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            self._win.erase()
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            self.write_room_name(room)
            self.write_own_nick(room)
            self.write_disconnected(room)
            self.write_role(room)
            self.print_scroll_position(room)
            self.finish_line(theme.COLOR_INFORMATION_BAR)
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            self._refresh()
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    def write_room_name(self, room):
        """
        """
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        self.addstr('[', curses.color_pair(theme.COLOR_INFORMATION_BAR))
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        self.addnstr(room.name, len(room.name), curses.color_pair(13))
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        self.addstr('] ', curses.color_pair(theme.COLOR_INFORMATION_BAR))
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    def write_disconnected(self, room):
        """
        Shows a message if the room is not joined
        """
        if not room.joined:
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            self.addstr(' -!- Not connected ', curses.color_pair(theme.COLOR_INFORMATION_BAR))

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    def write_own_nick(self, room):
        """
        Write our own nick in the info bar
        """
        nick = room.own_nick
        if not nick:
            return
        if len(nick) > 13:
            nick = nick[:13]+'…'
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        self.addstr(nick, curses.color_pair(theme.COLOR_INFORMATION_BAR))
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    def write_role(self, room):
        """
        Write our own role and affiliation
        """
        own_user = None
        for user in room.users:
            if user.nick == room.own_nick:
                own_user = user
                break
        if not own_user:
            return
        txt = ' ('
        if own_user.affiliation != 'none':
            txt += own_user.affiliation+', '
        txt += own_user.role+')'
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        self.addstr(txt, curses.color_pair(theme.COLOR_INFORMATION_BAR))
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class TextWin(Win):
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    def __init__(self):
        Win.__init__(self)
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    def build_lines_from_messages(self, messages):
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        """
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        From all the existing messages in the window, create the that will
        be displayed on the screen
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        """
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        lines = []
        for message in messages:
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            if message == None:  # line separator
                lines.append(None)
                continue
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            txt = message.txt
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            if not txt:
                continue
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            # length of the time
            offset = 9+len(theme.CHAR_TIME_LEFT[:1])+len(theme.CHAR_TIME_RIGHT[:1])
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            if message.nickname and len(message.nickname) >= 30:
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                nick = message.nickname[:30]+'…'
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            else:
                nick = message.nickname
            if nick:
                offset += len(nick) + 2 # + nick + spaces length
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            first = True
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            this_line_was_broken_by_space = False
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            while txt != '':
                if txt[:self.width-offset].find('\n') != -1:
                    limit = txt[:self.width-offset].find('\n')
                else:
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                    # break between words if possible
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                    if len(txt) >= self.width-offset:
                        limit = txt[:self.width-offset].rfind(' ')
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                        this_line_was_broken_by_space = True
                        if limit <= 0:
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                            limit = self.width-offset
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                            this_line_was_broken_by_space = False
                    else:
                        limit = self.width-offset-1
                        this_line_was_broken_by_space = False
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                color = message.user.color if message.user else None
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                if not first:
                    nick = None
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                    time = None
                else:
                    time = message.time
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                l = Line(nick, color,
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                         time,
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                         txt[:limit], message.color,
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                         offset,
                         message.colorized)
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                lines.append(l)
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                if this_line_was_broken_by_space:
                    txt = txt[limit+1:] # jump the space at the start of the line
                else:
                    txt = txt[limit:]
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                if txt.startswith('\n'):
                    txt = txt[1:]
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                first = False
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        return lines
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    def refresh(self, room):
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        """
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        Build the Line objects from the messages, and then write
        them in the text area
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        """
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        if self.height <= 0:
            return
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        with g_lock:
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            self._win.erase()
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            lines = self.build_lines_from_messages(room.messages)
            if room.pos + self.height > len(lines):
                room.pos = len(lines) - self.height
                if room.pos < 0:
                    room.pos = 0
            if room.pos != 0:
                lines = lines[-self.height-room.pos:-room.pos]
            else:
                lines = lines[-self.height:]
            y = 0
            for line in lines:
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                self._win.move(y, 0)
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                if line == None:
                    self.write_line_separator()
                    y += 1
                    continue
                if line.time is not None:
                    self.write_time(line.time)
                if line.nickname is not None:
                    self.write_nickname(line.nickname, line.nickname_color)
                self.write_text(y, line.text_offset, line.text, line.text_color, line.colorized)
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                y += 1
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            self._refresh()
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    def write_line_separator(self):
        """
        """
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        self._win.attron(curses.color_pair(theme.COLOR_NEW_TEXT_SEPARATOR))
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        self.addnstr('- '*(self.width//2), self.width)
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        self._win.attroff(curses.color_pair(theme.COLOR_NEW_TEXT_SEPARATOR))
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    def write_text(self, y, x, txt, color, colorized):
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        """
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        write the text of a line.
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        """
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        txt = txt
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        if not colorized:
            if color:
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                self._win.attron(curses.color_pair(color))
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            self.addstr(y, x, txt)
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            if color:
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                self._win.attroff(curses.color_pair(color))
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        else:                   # Special messages like join or quit
            special_words = {
                theme.CHAR_JOIN: theme.COLOR_JOIN_CHAR,
                theme.CHAR_QUIT: theme.COLOR_QUIT_CHAR,
                theme.CHAR_KICK: theme.COLOR_KICK_CHAR,
                }
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            try:
                splitted = shlex.split(txt)
            except ValueError:
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                # FIXME colors are disabled on too long words
                txt = txt.replace('"[', '').replace(']"', '')\
                    .replace('"{', '').replace('}"', '')\
                    .replace('"(', '').replace(')"', '')
                splitted = txt.split()
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            for word in splitted:
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                if word in list(special_words.keys()):
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                    self.addstr(word, curses.color_pair(special_words[word]))
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                elif word.startswith('(') and word.endswith(')'):
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                    self.addstr('(', curses.color_pair(color))
                    self.addstr(word[1:-1], curses.color_pair(theme.COLOR_CURLYBRACKETED_WORD))
                    self.addstr(')', curses.color_pair(color))
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                elif word.startswith('{') and word.endswith('}'):
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                    self.addstr(word[1:-1], curses.color_pair(theme.COLOR_ACCOLADE_WORD))
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                elif word.startswith('[') and word.endswith(']'):
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                    self.addstr(word[1:-1], curses.color_pair(theme.COLOR_BRACKETED_WORD))
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                else:
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                    self.addstr(word, curses.color_pair(color))
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                self._win.addch(' ')
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    def write_nickname(self, nickname, color):
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        """
        Write the nickname, using the user's color
        and return the number of written characters
        """
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        if color:
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            self._win.attron(curses.color_pair(color))
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        self.addstr(nickname)
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        if color:
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            self._win.attroff(curses.color_pair(color))
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        self.addstr("> ")
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    def write_time(self, time):
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        """
        Write the date on the yth line of the window
        """
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        self.addstr(theme.CHAR_TIME_LEFT, curses.color_pair(theme.COLOR_TIME_LIMITER))
        self.addstr(time.strftime("%H"), curses.color_pair(theme.COLOR_TIME_NUMBERS))
        self.addstr(':', curses.color_pair(theme.COLOR_TIME_SEPARATOR))
        self.addstr(time.strftime("%M"), curses.color_pair(theme.COLOR_TIME_NUMBERS))
        self.addstr(':', curses.color_pair(theme.COLOR_TIME_SEPARATOR))
        self.addstr(time.strftime('%S'), curses.color_pair(theme.COLOR_TIME_NUMBERS))
        self.addnstr(theme.CHAR_TIME_RIGHT, curses.color_pair(theme.COLOR_TIME_LIMITER))
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        self.addstr(' ')
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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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class HelpText(Win):
    """
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    A Window just displaying a read-only message.
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    Usually used to replace an Input when the tab is in
    command mode.
    """
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    def __init__(self, text=''):
        Win.__init__(self)
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        self.txt = text

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    def resize(self, height, width, y, x, stdscr):
        self._resize(height, width, y, x, stdscr)
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    def refresh(self):
        with g_lock:
            self._win.erase()
            self.addstr(0, 0, self.txt[:self.width-1], curses.color_pair(theme.COLOR_INFORMATION_BAR))
            self.finish_line(theme.COLOR_INFORMATION_BAR)
            self._refresh()

    def do_command(self, key):
        return False

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class Input(Win):
    """
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    The simplest Input possible, provides just a way to edit a single line
    of text. It also has a clipboard, common to all Inputs.
    Doesn't have any history.
    It doesn't do anything when enter is pressed either.
    This should be herited for all kinds of Inputs, for example MessageInput
    or the little inputs in dataforms, etc, adding specific features (completion etc)
    It features two kinds of completion, but they have to be called from outside (the Tab),
    passing the list of items that can be used to complete. The completion can be used
    in a very flexible way.
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    """
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    clipboard = '' # A common clipboard for all the inputs, this makes
    # it easy cut and paste text between various input
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    def __init__(self):
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        self.key_func = {
            "KEY_LEFT": self.key_left,
            "M-D": self.key_left,
            "KEY_RIGHT": self.key_right,
            "M-C": self.key_right,
            "KEY_END": self.key_end,
            "KEY_HOME": self.key_home,
            "KEY_DC": self.key_dc,
            '^D': self.key_dc,
            'M-b': self.jump_word_left,
            '^W': self.delete_word,
            '^K': self.delete_end_of_line,
            '^U': self.delete_begining_of_line,
            '^Y': self.paste_clipboard,
            '^A': self.key_home,
            '^E': self.key_end,
            'M-f': self.jump_word_right,
            "KEY_BACKSPACE": self.key_backspace,
            '^?': self.key_backspace,
            }

626
        Win.__init__(self)
627
        self.text = ''
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        self.pos = 0            # cursor position
        self.line_pos = 0 # position (in self.text) of
630

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    def is_empty(self):
        return len(self.text) == 0

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    def resize(self, height, width, y, x, stdscr):

        self._resize(height, width, y, x, stdscr)
637
        self._win.erase()
638
        self.addnstr(0, 0, self.text, self.width-1)
639

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    def jump_word_left(self):
        """
        Move the cursor one word to the left
        """
        if not len(self.text) or self.pos == 0:
            return
        previous_space = self.text[:self.pos+self.line_pos].rfind(' ')
        if previous_space == -1:
            previous_space = 0
        diff = self.pos+self.line_pos-previous_space
650
        for i in range(diff):
651
            self.key_left()
652
        return True
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    def jump_word_right(self):
        """
        Move the cursor one word to the right
        """
        if len(self.text) == self.pos+self.line_pos or not len(self.text):
            return
        next_space = self.text.find(' ', self.pos+self.line_pos+1)
        if next_space == -1:
            next_space = len(self.text)
        diff = next_space - (self.pos+self.line_pos)
664
        for i in range(diff):
665
            self.key_right()
666
        return True
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    def delete_word(self):
        """
        Delete the word just before the cursor
        """
        if not len(self.text) or self.pos == 0:
            return
        previous_space = self.text[:self.pos+self.line_pos].rfind(' ')
        if previous_space == -1:
            previous_space = 0
        diff = self.pos+self.line_pos-previous_space
678
        for i in range(diff):
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            self.key_backspace(False)
        self.rewrite_text()
681
        return True
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    def delete_end_of_line(self):
        """
        Cut the text from cursor to the end of line
        """
        if len(self.text) == self.pos+self.line_pos:
            return              # nothing to cut
689
        Input.clipboard = self.text[self.pos+self.line_pos:]
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        self.text = self.text[:self.pos+self.line_pos]
        self.key_end()
692
        return True
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    def delete_begining_of_line(self):
        """
        Cut the text from cursor to the begining of line
        """
        if self.pos+self.line_pos == 0:
            return
700
        Input.clipboard = self.text[:self.pos+self.line_pos]
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        self.text = self.text[self.pos+self.line_pos:]
        self.key_home()
703
        return True
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    def paste_clipboard(self):
        """
        Insert what is in the clipboard at the cursor position
        """
709
        if not Input.clipboard or len(Input.clipboard) == 0:
710
            return
711
        for letter in Input.clipboard:
712
            self.do_command(letter)
713
        return True
714

715
    def key_dc(self):
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        """
        delete char just after the cursor
        """
719
        self.reset_completion()
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        if self.pos + self.line_pos == len(self.text):
            return              # end of line, nothing to delete
        self.text = self.text[:self.pos+self.line_pos]+self.text[self.pos+self.line_pos+1:]
        self.rewrite_text()
724
        return True
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    def key_home(self):
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        """
        Go to the begining of line
        """
730
        self.reset_completion()
731
        self.pos = 0
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        self.line_pos = 0
        self.rewrite_text()
734
        return True
735

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    def key_end(self, reset=False):
        """
        Go to the end of line
        """
        if reset:
            self.reset_completion()
742
        if len(self.text) >= self.width-1:
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            self.pos = self.width-1
            self.line_pos = len(self.text)-self.pos
745
        else:
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            self.pos = len(self.text)
            self.line_pos = 0
        self.rewrite_text()
749
        return True
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    def key_left(self):
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        """
        Move the cursor one char to the left
        """
755
        self.reset_completion()
756
        (y, x) = self._win.getyx()
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        if self.pos == self.width-1 and self.line_pos > 0:
            self.line_pos -= 1
        elif self.pos >= 1:
760
            self.pos -= 1
761
        self.rewrite_text()
762
        return True
763 764

    def key_right(self):
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        """
        Move the cursor one char to the right
        """
768
        self.reset_completion()
769
        (y, x) = self._win.getyx()
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        if self.pos == self.width-1:
            if self.line_pos + self.width-1 < len(self.text):
                self.line_pos += 1
        elif self.pos < len(self.text):
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            self.pos += 1
775
        self.rewrite_text()
776
        return True
777

778
    def key_backspace(self, reset=True):
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        """
        Delete the char just before the cursor
        """
782
        self.reset_completion()
783
        (y, x) = self._win.getyx()
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        if self.pos == 0:
            return
        self.text = self.text[:self.pos+self.line_pos-1]+self.text[self.pos+self.line_pos:]
        self.key_left()
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        if reset:
            self.rewrite_text()
790
        return True
791

792
    def auto_completion(self, word_list, add_after):
793
        """
794 795 796 797
        Complete the input, from a list of words
        if add_after is None, we use the value defined in completion
        plus a space, after the completion. If it's a string, we use it after the
        completion (with no additional space)
798
        """
799
        if self.pos+self.line_pos != len(self.text): # or len(self.text) == 0
800
            return # we don't complete if cursor is not at the end of line
801
        completion_type = config.get('completion', 'normal')
802
        if completion_type == 'shell' and self.text != '':
803
            self.shell_completion(word_list, add_after)
804
        else:
805
            self.normal_completion(word_list, add_after)
806
        return True
807 808

    def reset_completion(self):
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        """
        Reset the completion list (called on ALL keys except tab)
        """
812
        self.hit_list = []
813
        self.last_completion = None
814

815
    def normal_completion(self, word_list, after):
816 817 818
        """
        Normal completion
        """
819
        (y, x) = self._win.getyx()
820
        if not self.last_completion:
821 822
            # begin is the begining of the word we want to complete
            if self.text.strip() and not self.text.endswith(' '):
823
                begin = self.text.split()[-1].lower()
824 825
            else:
                begin = ''
826
            log.debug('BEGIN: [%s]\n' % begin)
827
            hit_list = []       # list of matching nicks
828 829 830
            for word in word_list:
                if word.lower().startswith(begin):
                    hit_list.append(word)
831 832 833
            if len(hit_list) == 0:
                return
            self.hit_list = hit_list
834
            end = len(begin)
835
        else:
836 837 838 839
            if after:
                begin = self.text[-len(after)-len(self.last_completion):-len(after)]
            else:
                begin = self.last_completion
840
            self.hit_list.append(self.hit_list.pop(0)) # rotate list
841
            end = len(begin) + len(after)