core.py 52.7 KB
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# Copyright 2010-2011 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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from gettext import (bindtextdomain, textdomain, bind_textdomain_codeset,
                     gettext as _)
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from os.path import isfile
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from time import sleep

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import os
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import re
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import sys
import shlex
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import curses
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import threading
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import traceback
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from datetime import datetime
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import common
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import theme
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import logging

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from sleekxmpp.xmlstream.stanzabase import JID

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log = logging.getLogger(__name__)
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import multiuserchat as muc
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import tabs
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import windows
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from connection import connection
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from config import config
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from logger import logger
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from user import User
from room import Room
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from roster import Roster, RosterGroup, roster
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from contact import Contact, Resource
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from text_buffer import TextBuffer
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from keyboard import read_char
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# http://xmpp.org/extensions/xep-0045.html#errorstatus
ERROR_AND_STATUS_CODES = {
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    '401': _('A password is required'),
    '403': _('You are banned from the room'),
    '404': _('The room does\'nt exist'),
    '405': _('Your are not allowed to create a new room'),
    '406': _('A reserved nick must be used'),
    '407': _('You are not in the member list'),
    '409': _('This nickname is already in use or has been reserved'),
    '503': _('The maximum number of users has been reached'),
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    }

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SHOW_NAME = {
    'dnd': _('busy'),
    'away': _('away'),
    'xa': _('not available'),
    'chat': _('chatty'),
    '': _('available')
    }
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resize_lock = threading.Lock()

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class Core(object):
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    """
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    User interface using ncurses
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    """
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    def __init__(self, xmpp):
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        # All uncaught exception are given to this callback, instead
        # of being displayed on the screen and exiting the program.
        sys.excepthook = self.on_exception
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        self.running = True
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        self.stdscr = curses.initscr()
        self.init_curses(self.stdscr)
        self.xmpp = xmpp
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        # a unique buffer used to store global informations
        # that are displayed in almost all tabs, in an
        # information window.
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        self.information_buffer = TextBuffer()
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        self.information_win_size = config.get('info_win_height', 2, 'var')
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        default_tab = tabs.InfoTab(self) if self.xmpp.anon\
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            else tabs.RosterInfoTab(self)
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        default_tab.on_gain_focus()
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        self.tabs = [default_tab]
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        self.resize_timer = None
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        self.previous_tab_nb = 0
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        self.own_nick = config.get('own_nick', '') or self.xmpp.boundjid.user
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        # global commands, available from all tabs
        # a command is tuple of the form:
        # (the function executing the command. Takes a string as argument,
        #  a string representing the help message,
        #  a completion function, taking a Input as argument. Can be None)
        #  The completion function should return True if a completion was
        #  made ; False otherwise
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        self.commands = {
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            'help': (self.command_help, '\_o< KOIN KOIN KOIN', None),
            'join': (self.command_join, _("Usage: /join [room_name][@server][/nick] [password]\nJoin: Join the specified room. You can specify a nickname after a slash (/). If no nickname is specified, you will use the default_nick in the configuration file. You can omit the room name: you will then join the room you\'re looking at (useful if you were kicked). You can also provide a room_name without specifying a server, the server of the room you're currently in will be used. You can also provide a password to join the room.\nExamples:\n/join room@server.tld\n/join room@server.tld/John\n/join room2\n/join /me_again\n/join\n/join room@server.tld/my_nick password\n/join / password"), self.completion_join),
            'exit': (self.command_quit, _("Usage: /exit\nExit: Just disconnect from the server and exit poezio."), None),
            'next': (self.rotate_rooms_right, _("Usage: /next\nNext: Go to the next room."), None),
            'n': (self.rotate_rooms_right, _("Usage: /n\nN: Go to the next room."), None),
            'prev': (self.rotate_rooms_left, _("Usage: /prev\nPrev: Go to the previous room."), None),
            'p': (self.rotate_rooms_left, _("Usage: /p\nP: Go to the previous room."), None),
            'win': (self.command_win, _("Usage: /win <number>\nWin: Go to the specified room."), None),
            'w': (self.command_win, _("Usage: /w <number>\nW: Go to the specified room."), None),
            'show': (self.command_show, _("Usage: /show <availability> [status]\nShow: Change your availability and (optionaly) your status. The <availability> argument is one of \"avail, available, ok, here, chat, away, afk, dnd, busy, xa\" and the optional [status] argument will be your status message"), None),
            'away': (self.command_away, _("Usage: /away [message]\nAway: Sets your availability to away and (optional) sets your status message. This is equivalent to '/show away [message]'"), None),
            'busy': (self.command_busy, _("Usage: /busy [message]\nBusy: Sets your availability to busy and (optional) sets your status message. This is equivalent to '/show busy [message]'"), None),
            'avail': (self.command_avail, _("Usage: /avail [message]\nAvail: Sets your availability to available and (optional) sets your status message. This is equivalent to '/show available [message]'"), None),
            'available': (self.command_avail, _("Usage: /available [message]\nAvailable: Sets your availability to available and (optional) sets your status message. This is equivalent to '/show available [message]'"), None),
           'bookmark': (self.command_bookmark, _("Usage: /bookmark [roomname][/nick]\nBookmark: Bookmark the specified room (you will then auto-join it on each poezio start). This commands uses the same syntaxe as /join. Type /help join for syntaxe examples. Note that when typing \"/bookmark\" on its own, the room will be bookmarked with the nickname you\'re currently using in this room (instead of default_nick)"), None),
            'set': (self.command_set, _("Usage: /set <option> [value]\nSet: Sets the value to the option in your configuration file. You can, for example, change your default nickname by doing `/set default_nick toto` or your resource with `/set resource blabla`. You can also set an empty value (nothing) by providing no [value] after <option>."), None),
            'whois': (self.command_whois, _('Usage: /whois <nickname>\nWhois: Request many informations about the user.'), None),
            'theme': (self.command_theme, _('Usage: /theme\nTheme: Reload the theme defined in the config file.'), None),
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            'list': (self.command_list, _('Usage: /list\n/List: get the list of public chatrooms on the specified server'), self.completion_list),
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            }

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        self.key_func = {
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            "KEY_PPAGE": self.scroll_page_up,
            "KEY_NPAGE": self.scroll_page_down,
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            "KEY_F(5)": self.rotate_rooms_left,
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            "^P": self.rotate_rooms_left,
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            'kLFT3': self.rotate_rooms_left,
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            "KEY_F(6)": self.rotate_rooms_right,
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            "^N": self.rotate_rooms_right,
            'kRIT3': self.rotate_rooms_right,
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            "KEY_F(7)": self.shrink_information_win,
            "KEY_F(8)": self.grow_information_win,
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            "KEY_RESIZE": self.call_for_resize,
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            'M-e': self.go_to_important_room,
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            'M-r': self.go_to_roster,
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            'M-z': self.go_to_previous_tab,
            'M-v': self.move_separator,
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            '^L': self.full_screen_redraw,
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            }

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        # Add handlers
        self.xmpp.add_event_handler("session_start", self.on_connected)
        self.xmpp.add_event_handler("groupchat_presence", self.on_groupchat_presence)
        self.xmpp.add_event_handler("groupchat_message", self.on_groupchat_message)
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        self.xmpp.add_event_handler("groupchat_subject", self.on_groupchat_subject)
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        self.xmpp.add_event_handler("message", self.on_message)
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        self.xmpp.add_event_handler("got_online" , self.on_got_online)
        self.xmpp.add_event_handler("got_offline" , self.on_got_offline)
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        self.xmpp.add_event_handler("roster_update", self.on_roster_update)
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        self.xmpp.add_event_handler("changed_status", self.on_presence)
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    def on_exception(self, typ, value, trace):
        """
        When an exception in raised, open a special tab
        displaying the traceback and some instructions to
        make a bug report.
        """
        try:
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            tb_tab = tabs.SimpleTextTab(self, "/!\ Oups, an error occured (this may not be fatal). /!\\\nPlease report this bug (by copying the present error message and explaining what you were doing) on the page http://codingteam.net/project/poezio/bugs/add\n\n%s\n\nIf Poezio does not respond anymore, kill it with Ctrl+\\, and sorry about that :(" % ''.join(traceback.format_exception(typ, value, trace)))
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            self.add_tab(tb_tab, focus=True)
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        except Exception:       # If an exception is raised in this code,
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                                # this is fatal, so we exit cleanly and display the traceback
            curses.endwin()
            raise

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    def grow_information_win(self):
        """
        """
        if self.information_win_size == 14:
            return
        self.information_win_size += 1
        for tab in self.tabs:
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            tab.on_info_win_size_changed()
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        self.refresh_window()

    def shrink_information_win(self):
        """
        """
        if self.information_win_size == 0:
            return
        self.information_win_size -= 1
        for tab in self.tabs:
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            tab.on_info_win_size_changed()
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        self.refresh_window()
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    def on_got_offline(self, presence):
        jid = presence['from']
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        contact = roster.get_contact_by_jid(jid.bare)
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        if not contact:
            return
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        resource = contact.get_resource_by_fulljid(jid.full)
        assert resource
        self.information('%s is offline' % (resource.get_jid()), "Roster")
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        # If a resource got offline, display the message in the conversation with this
        # precise resource.
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        self.add_information_message_to_conversation_tab(jid.full, '%s is offline' % (resource.get_jid().full))
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        contact.remove_resource(resource)
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        # Display the message in the conversation with the bare JID only if that was
        # the only resource online (i.e. now the contact is completely disconnected)
        if not contact.get_highest_priority_resource(): # No resource left: that was the last one
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            self.add_information_message_to_conversation_tab(jid.bare, '%s is offline' % (jid.bare))
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        self.refresh_window()
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    def on_got_online(self, presence):
        jid = presence['from']
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        contact = roster.get_contact_by_jid(jid.bare)
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        if not contact:
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            # Todo, handle presence comming from contacts not in roster
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            return
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        resource = contact.get_resource_by_fulljid(jid.full)
        assert not resource
        resource = Resource(jid.full)
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        status = presence['type']
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        status_message = presence['status']
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        priority = presence.getPriority() or 0
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        resource.set_status(status_message)
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        resource.set_presence(status)
        resource.set_priority(priority)
        self.information("%s is online (%s)" % (resource.get_jid().full, status), "Roster")
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        self.add_information_message_to_conversation_tab(jid.full, '%s is online' % (jid.full))
        if not contact.get_highest_priority_resource():
            # No connected resource yet: the user's just connecting
            self.add_information_message_to_conversation_tab(jid.bare, '%s is online' % (jid.bare))
        contact.add_resource(resource)
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    def add_information_message_to_conversation_tab(self, jid, msg):
        """
        Search for a ConversationTab with the given jid (full or bare), if yes, add
        the given message to it
        """
        tab = self.get_tab_by_name(jid)
        if tab and isinstance(tab, tabs.ConversationTab):
            self.add_message_to_text_buffer(tab.get_room(), msg)

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    def on_connected(self, event):
        """
        Called when we are connected and authenticated
        """
        self.information(_("Welcome on Poezio \o/!"))
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        self.information(_("Your JID is %s") % self.xmpp.boundjid.full)
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        if not self.xmpp.anon:
            # request the roster
            self.xmpp.getRoster()
            # send initial presence
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            self.xmpp.makePresence().send()
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        rooms = config.get('rooms', '')
        if rooms == '' or not isinstance(rooms, str):
            return
        rooms = rooms.split(':')
        for room in rooms:
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            jid = JID(room)
            if jid.bare == '':
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                return
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            if jid.resource != '':
                nick = jid.resource
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            else:
                default = os.environ.get('USER') if os.environ.get('USER') else 'poezio'
                nick = config.get('default_nick', '')
                if nick == '':
                    nick = default
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            self.open_new_room(jid.bare, nick, False)
            muc.join_groupchat(self.xmpp, jid.bare, nick)
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        # if not self.xmpp.anon:
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        # Todo: SEND VCARD
        return
        if config.get('jid', '') == '': # Don't send the vcard if we're not anonymous
            self.vcard_sender.start()   # because the user ALREADY has one on the server

    def on_groupchat_presence(self, presence):
        """
        Triggered whenever a presence stanza is received from a user in a multi-user chat room.
        Display the presence on the room window and update the
        presence information of the concerned user
        """
        from_nick = presence['from'].resource
        from_room = presence['from'].bare
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        room = self.get_room_by_name(from_room)
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        code = presence.find('{jabber:client}status')
        status_codes = set([s.attrib['code'] for s in presence.findall('{http://jabber.org/protocol/muc#user}x/{http://jabber.org/protocol/muc#user}status')])
        # Check if it's not an error presence.
        if presence['type'] == 'error':
            return self.room_error(presence, from_room)
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        if not room:
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            return
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        msg = None
        affiliation = presence['muc']['affiliation']
        show = presence['show']
        status = presence['status']
        role = presence['muc']['role']
        jid = presence['muc']['jid']
        typ = presence['type']
        if not room.joined:     # user in the room BEFORE us.
            # ignore redondant presence message, see bug #1509
            if from_nick not in [user.nick for user in room.users]:
                new_user = User(from_nick, affiliation, show, status, role)
                room.users.append(new_user)
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                if from_nick == room.own_nick:
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                    room.joined = True
                    new_user.color = theme.COLOR_OWN_NICK
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                    self.add_message_to_text_buffer(room, _("Your nickname is %s") % (from_nick))
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                    if '170' in status_codes:
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                        self.add_message_to_text_buffer(room, 'Warning: this room is publicly logged')
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        else:
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            change_nick = '303' in status_codes
            kick = '307' in status_codes and typ == 'unavailable'
            user = room.get_user_by_name(from_nick)
            # New user
            if not user:
                self.on_user_join(room, from_nick, affiliation, show, status, role, jid)
            # nick change
            elif change_nick:
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                self.on_user_nick_change(room, presence, user, from_nick, from_room)
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            # kick
            elif kick:
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                self.on_user_kicked(room, presence, user, from_nick)
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            # user quit
            elif typ == 'unavailable':
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                self.on_user_leave_groupchat(room, user, jid, status, from_nick, from_room)
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            # status change
            else:
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                self.on_user_change_status(room, user, from_nick, from_room, affiliation, role, show, status)
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        self.refresh_window()
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        self.doupdate()
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    def on_user_join(self, room, from_nick, affiliation, show, status, role, jid):
        """
        When a new user joins a groupchat
        """
        room.users.append(User(from_nick, affiliation,
                               show, status, role))
        hide_exit_join = config.get('hide_exit_join', -1)
        if hide_exit_join != 0:
            if not jid.full:
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                self.add_message_to_text_buffer(room, _('%(spec)s "[%(nick)s]" joined the room') % {'nick':from_nick.replace('"', '\\"'), 'spec':theme.CHAR_JOIN.replace('"', '\\"')}, colorized=True)
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            else:
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                self.add_message_to_text_buffer(room, _('%(spec)s "[%(nick)s]" "(%(jid)s)" joined the room') % {'spec':theme.CHAR_JOIN.replace('"', '\\"'), 'nick':from_nick.replace('"', '\\"'), 'jid':jid.full}, colorized=True)
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    def on_user_nick_change(self, room, presence, user, from_nick, from_room):
        new_nick = presence.find('{http://jabber.org/protocol/muc#user}x/{http://jabber.org/protocol/muc#user}item').attrib['nick']
        if user.nick == room.own_nick:
            room.own_nick = new_nick
            # also change our nick in all private discussion of this room
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            for _tab in self.tabs:
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                if isinstance(_tab, tabs.PrivateTab) and JID(_tab.get_name()).bare == room.name:
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                    _tab.get_room().own_nick = new_nick
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        user.change_nick(new_nick)
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        self.add_message_to_text_buffer(room, _('"[%(old)s]" is now known as "[%(new)s]"') % {'old':from_nick.replace('"', '\\"'), 'new':new_nick.replace('"', '\\"')}, colorized=True)
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        # rename the private tabs if needed
        private_room = self.get_room_by_name('%s/%s' % (from_room, from_nick))
        if private_room:
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            self.add_message_to_text_buffer(private_room, _('"[%(old_nick)s]" is now known as "[%(new_nick)s]"') % {'old_nick':from_nick.replace('"', '\\"'), 'new_nick':new_nick.replace('"', '\\"')}, colorized=True)
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            new_jid = JID(private_room.name).bare+'/'+new_nick
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            private_room.name = new_jid
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    def on_user_kicked(self, room, presence, user, from_nick):
        """
        When someone is kicked
        """
        room.users.remove(user)
        by = presence.find('{http://jabber.org/protocol/muc#user}x/{http://jabber.org/protocol/muc#user}item/{http://jabber.org/protocol/muc#user}actor')
        reason = presence.find('{http://jabber.org/protocol/muc#user}x/{http://jabber.org/protocol/muc#user}item/{http://jabber.org/protocol/muc#user}reason')
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        by = by.attrib['jid'] if by is not None else None
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        reason = reason.text if reason else ''
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        if from_nick == room.own_nick: # we are kicked
            room.disconnect()
            if by:
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                kick_msg = _('%(spec)s [You] have been kicked by "[%(by)s]"') % {'spec': theme.CHAR_KICK.replace('"', '\\"'), 'by':by}
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            else:
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                kick_msg = _('%(spec)s [You] have been kicked.') % {'spec':theme.CHAR_KICK.replace('"', '\\"')}
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            # try to auto-rejoin
            if config.get('autorejoin', 'false') == 'true':
                muc.join_groupchat(self.xmpp, room.name, room.own_nick)
        else:
            if by:
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                kick_msg = _('%(spec)s "[%(nick)s]" has been kicked by "[%(by)s]"') % {'spec':theme.CHAR_KICK.replace('"', '\\"'), 'nick':from_nick.replace('"', '\\"'), 'by':by.replace('"', '\\"')}
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            else:
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                kick_msg = _('%(spec)s "[%(nick)s]" has been kicked') % {'spec':theme.CHAR_KICK, 'nick':from_nick.replace('"', '\\"')}
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        if reason:
            kick_msg += _(' Reason: %(reason)s') % {'reason': reason}
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        self.add_message_to_text_buffer(room, kick_msg, colorized=True)
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    def on_user_leave_groupchat(self, room, user, jid, status, from_nick, from_room):
        """
        When an user leaves a groupchat
        """
        room.users.remove(user)
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        if room.own_nick == user.nick:
            # We are now out of the room. Happens with some buggy (? not sure) servers
            room.disconnect()
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        hide_exit_join = config.get('hide_exit_join', -1) if config.get('hide_exit_join', -1) >= -1 else -1
        if hide_exit_join == -1 or user.has_talked_since(hide_exit_join):
            if not jid.full:
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                leave_msg = _('%(spec)s "[%(nick)s]" has left the room') % {'nick':from_nick.replace('"', '\\"'), 'spec':theme.CHAR_QUIT.replace('"', '\\"')}
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            else:
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                leave_msg = _('%(spec)s "[%(nick)s]" "(%(jid)s)" has left the room') % {'spec':theme.CHAR_QUIT.replace('"', '\\"'), 'nick':from_nick.replace('"', '\\"'), 'jid':jid.full.replace('"', '\\"')}
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            if status:
                leave_msg += ' (%s)' % status
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            self.add_message_to_text_buffer(room, leave_msg, colorized=True)
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        private_room = self.get_room_by_name('%s/%s' % (from_room, from_nick))
        if private_room:
            if not status:
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                self.add_message_to_text_buffer(private_room, _('%(spec)s "[%(nick)s]" has left the room') % {'nick':from_nick.replace('"', '\\"'), 'spec':theme.CHAR_QUIT.replace('"', '\\"')}, colorized=True)
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            else:
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                self.add_message_to_text_buffer(private_room, _('%(spec)s "[%(nick)s]" has left the room "(%(status)s)"') % {'nick':from_nick.replace('"', '\\"'), 'spec':theme.CHAR_QUIT, 'status': status.replace('"', '\\"')}, colorized=True)
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    def on_user_change_status(self, room, user, from_nick, from_room, affiliation, role, show, status):
        """
        When an user changes her status
        """
        # build the message
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        display_message = False # flag to know if something significant enough
        # to be displayed has changed
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        msg = _('"%s" changed: ')% from_nick.replace('"', '\\"')
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        if affiliation != user.affiliation:
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            msg += _('affiliation: %s, ') % affiliation
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            display_message = True
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        if role != user.role:
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            msg += _('role: %s, ') % role
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            display_message = True
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        if show != user.show and show in list(SHOW_NAME.keys()):
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            msg += _('show: %s, ') % SHOW_NAME[show]
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            display_message = True
        if status and status != user.status:
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            msg += _('status: %s, ') % status
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            display_message = True
        if not display_message:
            return
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        msg = msg[:-2] # remove the last ", "
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        hide_status_change = config.get('hide_status_change', -1) if config.get('hide_status_change', -1) >= -1 else -1
        if (hide_status_change == -1 or \
                user.has_talked_since(hide_status_change) or\
                user.nick == room.own_nick)\
                and\
                (affiliation != user.affiliation or\
                    role != user.role or\
                    show != user.show or\
                    status != user.status):
            # display the message in the room
449
            self.add_message_to_text_buffer(room, msg, colorized=True)
450 451
        private_room = self.get_room_by_name('%s/%s' % (from_room, from_nick))
        if private_room: # display the message in private
452
            self.add_message_to_text_buffer(private_room, msg, colorized=True)
453 454 455
        # finally, effectively change the user status
        user.update(affiliation, show, status, role)

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    def on_message(self, message):
        """
        When receiving private message from a muc OR a normal message
        (from one of our contacts)
        """
        if message['type'] == 'groupchat':
462
            return
463 464
        # Differentiate both type of messages, and call the appropriate handler.
        jid_from = message['from']
465
        for tab in self.tabs:
466
            if tab.get_name() == jid_from.bare and isinstance(tab, tabs.MucTab):
467
                if message['type'] == 'error':
468
                    return self.room_error(message, tab.get_room().name)
469 470
                else:
                    return self.on_groupchat_private_message(message)
471 472 473 474 475 476 477
        return self.on_normal_message(message)

    def on_groupchat_private_message(self, message):
        """
        We received a Private Message (from someone in a Muc)
        """
        jid = message['from']
478
        nick_from = jid.resource
479
        room_from = jid.bare
480 481
        room = self.get_room_by_name(jid.full) # get the tab with the private conversation
        if not room: # It's the first message we receive: create the tab
482
            room = self.open_private_window(room_from, nick_from, False)
483 484 485
            if not room:
                return
        body = message['body']
486 487 488
        room.add_message(body, time=None, nickname=nick_from,
                         colorized=False,
                         forced_user=self.get_room_by_name(room_from).get_user_by_name(nick_from))
489
        self.refresh_window()
490
        self.doupdate()
491

492 493 494 495 496
    def focus_tab_named(self, tab_name):
        for tab in self.tabs:
            if tab.get_name() == tab_name:
                self.command_win('%s' % (tab.nb,))

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    def on_normal_message(self, message):
        """
        When receiving "normal" messages (from someone in our roster)
        """
501
        jid = message['from']
502 503 504
        body = message['body']
        if not body:
            return
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        # We first check if we have a conversation opened with this precise resource
        conversation = self.get_tab_by_name(jid.full)
        if not conversation:
            # If not, we search for a conversation with the bare jid
            conversation = self.get_tab_by_name(jid.bare)
            if not conversation:
                # We create the conversation with the bare Jid if nothing was found
                conversation = self.open_conversation_window(jid.bare, False)
513
        if roster.get_contact_by_jid(jid.bare):
514
            remote_nick = roster.get_contact_by_jid(jid.bare).get_name() or jid.user
515
        else:
516
            remote_nick = jid.user
517
        conversation.get_room().add_message(body, None, remote_nick, False, theme.COLOR_REMOTE_USER)
518 519
        if self.current_tab() is not conversation:
            conversation.set_color_state(theme.COLOR_TAB_PRIVATE)
520
        self.refresh_window()
521 522

    def on_presence(self, presence):
523
        jid = presence['from']
524
        contact = roster.get_contact_by_jid(jid.bare)
525 526 527 528 529 530
        if not contact:
            return
        resource = contact.get_resource_by_fulljid(jid.full)
        if not resource:
            return
        status = presence['type']
531
        status_message = presence['status']
532 533 534
        priority = presence.getPriority() or 0
        resource.set_presence(status)
        resource.set_priority(priority)
535
        resource.set_status(status_message)
536
        self.refresh_window()
537

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    def on_roster_update(self, iq):
        """
        A subscription changed, or we received a roster item
        after a roster request, etc
        """
543 544
        for item in iq.findall('{jabber:iq:roster}query/{jabber:iq:roster}item'):
            jid = item.attrib['jid']
545
            contact = roster.get_contact_by_jid(jid)
546 547
            if not contact:
                contact = Contact(jid)
548
                roster.add_contact(contact, jid)
549 550 551 552
            if 'ask' in item.attrib:
                contact.set_ask(item.attrib['ask'])
            else:
                contact.set_ask(None)
553 554 555 556
            if 'name' in item.attrib:
                contact.set_name(item.attrib['name'])
            else:
                contact.set_name(None)
557 558 559
            if item.attrib['subscription']:
                contact.set_subscription(item.attrib['subscription'])
            groups = item.findall('{jabber:iq:roster}group')
560
            roster.edit_groups_of_contact(contact, [group.text for group in groups])
561
        if isinstance(self.current_tab(), tabs.RosterInfoTab):
562
            self.refresh_window()
563

564 565 566 567 568 569 570
    def full_screen_redraw(self):
        """
        Completely erase and redraw the screen
        """
        self.stdscr.clear()
        self.call_for_resize()

571 572 573 574 575 576 577
    def call_for_resize(self):
        """
        Starts a very short timer. If no other terminal resize
        occured in this delay then poezio is REALLY resize.
        This is to avoid multiple unnecessary software resizes (this
        can be heavy on resource on slow computers or networks)
        """
578 579 580 581 582 583 584 585 586
        with resize_lock:
            if self.resize_timer:
                # a recent terminal resize occured.
                # Cancel the programmed software resize
                self.resize_timer.cancel()
            # add the new timer
            self.resize_timer = threading.Timer(0.1, self.resize_window)
            self.resize_timer.start()
        # self.resize_window()
587

588 589 590 591
    def resize_window(self):
        """
        Resize the whole screen
        """
592 593
        with resize_lock:
            for tab in self.tabs:
594
                tab.resize()
595
            self.refresh_window()
596

597
    def main_loop(self):
598 599 600
        """
        main loop waiting for the user to press a key
        """
601
        self.refresh_window()
602
        while self.running:
603
            self.doupdate()
604
            char=read_char(self.stdscr)
605
            # search for keyboard shortcut
606
            if char in list(self.key_func.keys()):
607
                self.key_func[char]()
608
            else:
609
                self.do_command(char)
610

611
    def current_tab(self):
612 613 614
        """
        returns the current room, the one we are viewing
        """
615
        return self.tabs[0]
616

617 618 619 620 621
    def get_conversation_by_jid(self, jid):
        """
        Return the room of the ConversationTab with the given jid
        """
        for tab in self.tabs:
622
            if isinstance(tab, tabs.ConversationTab):
623 624 625 626
                if tab.get_name() == jid:
                    return tab.get_room()
        return None

627 628 629 630 631 632 633 634 635
    def get_tab_by_name(self, name):
        """
        Get the tab with the given name.
        """
        for tab in self.tabs:
            if tab.get_name() == name:
                return tab
        return None

636
    def get_room_by_name(self, name):
637 638 639
        """
        returns the room that has this name
        """
640
        for tab in self.tabs:
641
            if (isinstance(tab, tabs.MucTab) or
642
                isinstance(tab, tabs.PrivateTab)) and tab.get_name() == name:
643
                return tab.get_room()
644
        return None
645

646
    def init_curses(self, stdscr):
647 648 649
        """
        ncurses initialization
        """
650
        curses.curs_set(1)
651
        curses.noecho()
652 653
        # curses.raw()
        theme.init_colors()
654
        stdscr.keypad(True)
655

656
    def reset_curses(self):
657 658 659 660 661
        """
        Reset terminal capabilities to what they were before ncurses
        init
        """
        curses.echo()
662
        curses.nocbreak()
663
        curses.endwin()
664

665 666 667 668
    def refresh_window(self):
        """
        Refresh everything
        """
669
        self.current_tab().set_color_state(theme.COLOR_TAB_CURRENT)
670
        self.current_tab().refresh(self.tabs, self.information_buffer, roster)
671
        self.doupdate()
672

673
    def add_tab(self, new_tab, focus=False):
674
        """
675 676
        Appends the new_tab in the tab list and
        focus it if focus==True
677
        """
678 679
        if self.current_tab().nb == 0:
            self.tabs.append(new_tab)
680
        else:
681 682 683
            for ta in self.tabs:
                if ta.nb == 0:
                    self.tabs.insert(self.tabs.index(ta), new_tab)
684
                    break
685
        if focus:
686
            self.command_win("%s" % new_tab.nb)
687 688 689 690 691 692 693 694

    def open_new_room(self, room, nick, focus=True):
        """
        Open a new tab.MucTab containing a muc Room, using the specified nick
        """
        r = Room(room, nick)
        new_tab = tabs.MucTab(self, r)
        self.add_tab(new_tab, focus)
695
        self.refresh_window()
696

697 698 699 700 701 702
    def go_to_roster(self):
        self.command_win('0')

    def go_to_previous_tab(self):
        self.command_win('%s' % (self.previous_tab_nb,))

703 704 705 706 707 708 709
    def go_to_important_room(self):
        """
        Go to the next room with activity, in this order:
        - A personal conversation with a new message
        - A Muc with an highlight
        - A Muc with any new message
        """
710 711 712
        for tab in self.tabs:
            if tab.get_color_state() == theme.COLOR_TAB_PRIVATE:
                self.command_win('%s' % tab.nb)
713
                return
714 715 716
        for tab in self.tabs:
            if tab.get_color_state() == theme.COLOR_TAB_HIGHLIGHT:
                self.command_win('%s' % tab.nb)
717
                return
718 719 720
        for tab in self.tabs:
            if tab.get_color_state() == theme.COLOR_TAB_NEW_MESSAGE:
                self.command_win('%s' % tab.nb)
721
                return
722 723 724 725
        for tab in self.tabs:
            if isinstance(tab, tabs.ChatTab) and not tab.input.is_empty():
                self.command_win('%s' % tab.nb)
                return
726

727
    def rotate_rooms_right(self, args=None):
728 729 730
        """
        rotate the rooms list to the right
        """
731 732 733
        self.current_tab().on_lose_focus()
        self.tabs.append(self.tabs.pop(0))
        self.current_tab().on_gain_focus()
734
        self.refresh_window()
735

736
    def rotate_rooms_left(self, args=None):
737 738 739
        """
        rotate the rooms list to the right
        """
740 741 742
        self.current_tab().on_lose_focus()
        self.tabs.insert(0, self.tabs.pop())
        self.current_tab().on_gain_focus()
743
        self.refresh_window()
744

745
    def scroll_page_down(self, args=None):
746
        self.current_tab().on_scroll_down()
747
        self.refresh_window()
748 749

    def scroll_page_up(self, args=None):
750
        self.current_tab().on_scroll_up()
751
        self.refresh_window()
752

753
    def room_error(self, error, room_name):
754 755 756
        """
        Display the error on the room window
        """
757 758 759 760 761 762
        room = self.get_room_by_name(room_name)
        msg = error['error']['type']
        condition = error['error']['condition']
        code = error['error']['code']
        body = error['error']['text']
        if not body:
763
            if code in list(ERROR_AND_STATUS_CODES.keys()):
764 765
                body = ERROR_AND_STATUS_CODES[code]
            else:
766 767
                body = condition or _('Unknown error')
        if code:
768 769
            msg = _('Error: %(code)s - %(msg)s: %(body)s') % {'msg':msg, 'body':body, 'code':code}
            self.add_message_to_text_buffer(room, msg)
770
        else:
771 772
            msg = _('Error: %(msg)s: %(body)s') % {'msg':msg, 'body':body}
            self.add_message_to_text_buffer(room, msg)
773
        if code == '401':
774 775
            msg = _('To provide a password in order to join the room, type "/join / password" (replace "password" by the real password)')
            self.add_message_to_text_buffer(room, msg)
776
        if code == '409':
777 778 779
            if config.get('alternative_nickname', '') != '':
                self.command_join('%s/%s'% (room.name, room.own_nick+config.get('alternative_nickname', '')))
            else:
780
                self.add_message_to_text_buffer(room, _('You can join the room with an other nick, by typing "/join /other_nick"'))
781
        self.refresh_window()
782

783
    def open_conversation_window(self, jid, focus=True):
784 785 786
        """
        open a new conversation tab and focus it if needed
        """
787
        new_tab = tabs.ConversationTab(self, jid)
788
        # insert it in the rooms
789
        self.add_tab(new_tab, focus)
790
        self.refresh_window()
791
        return new_tab
792

793
    def open_private_window(self, room_name, user_nick, focus=True):
794
        complete_jid = room_name+'/'+user_nick
795
        for tab in self.tabs: # if the room exists, focus it and return
796
            if isinstance(tab, tabs.PrivateTab):
797 798
                if tab.get_name() == complete_jid:
<