muctab.py

"""
Module for the MucTab

A MucTab is a tab for multi-user chats as defined in XEP-0045.

It keeps track of many things such as part/joins, maintains an
user list, and updates private tabs when necessary.
"""

import logging
log = logging.getLogger(__name__)

import bisect
import curses
import os
import random
import re
from datetime import datetime

from poezio.tabs import ChatTab, Tab

from poezio import common
from poezio import fixes
from poezio import multiuserchat as muc
from poezio import timed_events
from poezio import windows
from poezio import xhtml
from poezio.common import safeJID
from poezio.config import config
from poezio.decorators import refresh_wrapper, command_args_parser
from poezio.logger import logger
from poezio.roster import roster
from poezio.theming import get_theme, dump_tuple
from poezio.user import User


SHOW_NAME = {
    'dnd': 'busy',
    'away': 'away',
    'xa': 'not available',
    'chat': 'chatty',
    '': 'available'
    }

NS_MUC_USER = 'http://jabber.org/protocol/muc#user'


class MucTab(ChatTab):
    """
    The tab containing a multi-user-chat room.
    It contains an userlist, an input, a topic, an information and a chat zone
    """
    message_type = 'groupchat'
    plugin_commands = {}
    plugin_keys = {}
    def __init__(self, core, jid, nick, password=None):
        self.joined = False
        ChatTab.__init__(self, core, jid)
        if self.joined == False:
            self._state = 'disconnected'
        self.own_nick = nick
        self.own_user = None
        self.name = jid
        self.password = password
        self.users = []
        self.privates = [] # private conversations
        self.topic = ''
        self.topic_from = ''
        self.remote_wants_chatstates = True
        # Self ping event, so we can cancel it when we leave the room
        self.self_ping_event = None
        # We send active, composing and paused states to the MUC because
        # the chatstate may or may not be filtered by the MUC,
        # that’s not our problem.
        self.topic_win = windows.Topic()
        self.text_win = windows.TextWin()
        self._text_buffer.add_window(self.text_win)
        self.v_separator = windows.VerticalSeparator()
        self.user_win = windows.UserList()
        self.info_header = windows.MucInfoWin()
        self.input = windows.MessageInput()
        self.ignores = []       # set of Users
        # keys
        self.key_func['^I'] = self.completion
        self.key_func['M-u'] = self.scroll_user_list_down
        self.key_func['M-y'] = self.scroll_user_list_up
        self.key_func['M-n'] = self.go_to_next_hl
        self.key_func['M-p'] = self.go_to_prev_hl
        # commands
        self.register_command('ignore', self.command_ignore,
                usage='<nickname>',
                desc='Ignore a specified nickname.',
                shortdesc='Ignore someone',
                completion=self.completion_ignore)
        self.register_command('unignore', self.command_unignore,
                usage='<nickname>',
                desc='Remove the specified nickname from the ignore list.',
                shortdesc='Unignore someone.',
                completion=self.completion_unignore)
        self.register_command('kick', self.command_kick,
                usage='<nick> [reason]',
                desc='Kick the user with the specified nickname.'
                     ' You also can give an optional reason.',
                shortdesc='Kick someone.',
                completion=self.completion_quoted)
        self.register_command('ban', self.command_ban,
                usage='<nick> [reason]',
                desc='Ban the user with the specified nickname.'
                     ' You also can give an optional reason.',
                shortdesc='Ban someone',
                completion=self.completion_quoted)
        self.register_command('role', self.command_role,
                usage='<nick> <role> [reason]',
                desc='Set the role of an user. Roles can be:'
                     ' none, visitor, participant, moderator.'
                     ' You also can give an optional reason.',
                shortdesc='Set the role of an user.',
                completion=self.completion_role)
        self.register_command('affiliation', self.command_affiliation,
                usage='<nick or jid> <affiliation>',
                desc='Set the affiliation of an user. Affiliations can be:'
                     ' outcast, none, member, admin, owner.',
                shortdesc='Set the affiliation of an user.',
                completion=self.completion_affiliation)
        self.register_command('topic', self.command_topic,
                usage='<subject>',
                desc='Change the subject of the room.',
                shortdesc='Change the subject.',
                completion=self.completion_topic)
        self.register_command('query', self.command_query,
                usage='<nick> [message]',
                desc='Open a private conversation with <nick>. This nick'
                     ' has to be present in the room you\'re currently in.'
                     ' If you specified a message after the nickname, it '
                     'will immediately be sent to this user.',
                shortdesc='Query an user.',
                completion=self.completion_quoted)
        self.register_command('part', self.command_part,
                usage='[message]',
                desc='Disconnect from a room. You can'
                     ' specify an optional message.',
                shortdesc='Leave the room.')
        self.register_command('close', self.command_close,
                usage='[message]',
                desc='Disconnect from a room and close the tab.'
                     ' You can specify an optional message if '
                     'you are still connected.',
                shortdesc='Close the tab.')
        self.register_command('nick', self.command_nick,
                usage='<nickname>',
                desc='Change your nickname in the current room.',
                shortdesc='Change your nickname.',
                completion=self.completion_nick)
        self.register_command('recolor', self.command_recolor,
                usage='[random]',
                desc='Re-assign a color to all participants of the'
                     ' current room, based on the last time they talked.'
                     ' Use this if the participants currently talking '
                     'have too many identical colors. Use /recolor random'
                     ' for a non-deterministic result.',
                shortdesc='Change the nicks colors.',
                completion=self.completion_recolor)
        self.register_command('color', self.command_color,
                usage='<nick> <color>',
                desc='Fix a color for a nick. Use "unset" instead of a color'
                     ' to remove the attribution',
                shortdesc='Fix a color for a nick.',
                completion=self.completion_color)
        self.register_command('cycle', self.command_cycle,
                usage='[message]',
                desc='Leave the current room and rejoin it immediately.',
                shortdesc='Leave and re-join the room.')
        self.register_command('info', self.command_info,
                usage='<nickname>',
                desc='Display some information about the user '
                     'in the MUC: its/his/her role, affiliation,'
                     ' status and status message.',
                shortdesc='Show an user\'s infos.',
                completion=self.completion_info)
        self.register_command('configure', self.command_configure,
                desc='Configure the current room, through a form.',
                shortdesc='Configure the room.')
        self.register_command('version', self.command_version,
                usage='<jid or nick>',
                desc='Get the software version of the given JID'
                     ' or nick in room (usually its XMPP client'
                     ' and Operating System).',
                shortdesc='Get the software version of a jid.',
                completion=self.completion_version)
        self.register_command('names', self.command_names,
                desc='Get the users in the room with their roles.',
                shortdesc='List the users.')
        self.register_command('invite', self.command_invite,
                desc='Invite a contact to this room',
                usage='<jid> [reason]',
                shortdesc='Invite a contact to this room',
                completion=self.completion_invite)

        self.resize()
        self.update_commands()
        self.update_keys()

    @property
    def general_jid(self):
        return self.name

    @property
    def is_muc(self):
        return True

    @property
    def last_connection(self):
        last_message = self._text_buffer.last_message
        if last_message:
            return last_message.time
        return None

    @refresh_wrapper.always
    def go_to_next_hl(self):
        """
        Go to the next HL in the room, or the last
        """
        self.text_win.next_highlight()

    @refresh_wrapper.always
    def go_to_prev_hl(self):
        """
        Go to the previous HL in the room, or the first
        """
        self.text_win.previous_highlight()

    def completion_version(self, the_input):
        """Completion for /version"""
        compare_users = lambda x: x.last_talked
        userlist = []
        for user in sorted(self.users, key=compare_users, reverse=True):
            if user.nick != self.own_nick:
                userlist.append(user.nick)
        comp = []
        for jid in (jid for jid in roster.jids() if len(roster[jid])):
            for resource in roster[jid].resources:
                comp.append(resource.jid)
        comp.sort()
        userlist.extend(comp)

        return the_input.auto_completion(userlist, quotify=False)

    def completion_info(self, the_input):
        """Completion for /info"""
        compare_users = lambda x: x.last_talked
        userlist = []
        for user in sorted(self.users, key=compare_users, reverse=True):
            userlist.append(user.nick)
        return the_input.auto_completion(userlist, quotify=False)

    def completion_nick(self, the_input):
        """Completion for /nick"""
        nicks = [os.environ.get('USER'),
                 config.get('default_nick'),
                 self.core.get_bookmark_nickname(self.name)]
        nicks = [i for i in nicks if i]
        return the_input.auto_completion(nicks, '', quotify=False)

    def completion_recolor(self, the_input):
        if the_input.get_argument_position() == 1:
            return the_input.new_completion(['random'], 1, '', quotify=False)
        return True

    def completion_color(self, the_input):
        """Completion for /color"""
        n = the_input.get_argument_position(quoted=True)
        if n == 1:
            userlist = [user.nick for user in self.users]
            if self.own_nick in userlist:
                userlist.remove(self.own_nick)
            return the_input.new_completion(userlist, 1, '', quotify=True)
        elif n == 2:
            colors = [i for i in xhtml.colors if i]
            colors.sort()
            colors.append('unset')
            colors.append('random')
            return the_input.new_completion(colors, 2, '', quotify=False)

    def completion_ignore(self, the_input):
        """Completion for /ignore"""
        userlist = [user.nick for user in self.users]
        if self.own_nick in userlist:
            userlist.remove(self.own_nick)
        userlist.sort()
        return the_input.auto_completion(userlist, quotify=False)

    def completion_role(self, the_input):
        """Completion for /role"""
        n = the_input.get_argument_position(quoted=True)
        if n == 1:
            userlist = [user.nick for user in self.users]
            if self.own_nick in userlist:
                userlist.remove(self.own_nick)
            return the_input.new_completion(userlist, 1, '', quotify=True)
        elif n == 2:
            possible_roles = ['none', 'visitor', 'participant', 'moderator']
            return the_input.new_completion(possible_roles, 2, '',
                                            quotify=True)

    def completion_affiliation(self, the_input):
        """Completion for /affiliation"""
        n = the_input.get_argument_position(quoted=True)
        if n == 1:
            userlist = [user.nick for user in self.users]
            if self.own_nick in userlist:
                userlist.remove(self.own_nick)
            jidlist = [user.jid.bare for user in self.users]
            if self.core.xmpp.boundjid.bare in jidlist:
                jidlist.remove(self.core.xmpp.boundjid.bare)
            userlist.extend(jidlist)
            return the_input.new_completion(userlist, 1, '', quotify=True)
        elif n == 2:
            possible_affiliations = ['none', 'member', 'admin',
                                     'owner', 'outcast']
            return the_input.new_completion(possible_affiliations, 2, '',
                                            quotify=True)

    @command_args_parser.quoted(1, 1, [''])
    def command_invite(self, args):
        """/invite <jid> [reason]"""
        if args is None:
            return self.core.command.help('invite')
        jid, reason = args
        self.core.command.invite('%s %s "%s"' % (jid, self.name, reason))

    def completion_invite(self, the_input):
        """Completion for /invite"""
        n = the_input.get_argument_position(quoted=True)
        if n == 1:
            return the_input.new_completion(roster.jids(), 1, quotify=True)

    def scroll_user_list_up(self):
        self.user_win.scroll_up()
        self.user_win.refresh(self.users)
        self.input.refresh()

    def scroll_user_list_down(self):
        self.user_win.scroll_down()
        self.user_win.refresh(self.users)
        self.input.refresh()

    @command_args_parser.quoted(1)
    def command_info(self, args):
        """
        /info <nick>
        """
        if args is None:
            return self.core.command.help('info')
        nick = args[0]
        user = self.get_user_by_name(nick)
        if not user:
            return self.core.information("Unknown user: %s" % nick, "Error")
        theme = get_theme()
        inf = '\x19' + dump_tuple(theme.COLOR_INFORMATION_TEXT) + '}'
        if user.jid:
            user_jid = '%s (\x19%s}%s\x19o%s)' % (
                            inf,
                            dump_tuple(theme.COLOR_MUC_JID),
                            user.jid,
                            inf)
        else:
            user_jid = ''
        info = ('\x19%s}%s\x19o%s%s: show: \x19%s}%s\x19o%s, affiliation:'
                ' \x19%s}%s\x19o%s, role: \x19%s}%s\x19o%s') % (
                        dump_tuple(user.color),
                        nick,
                        user_jid,
                        inf,
                        dump_tuple(theme.color_show(user.show)),
                        user.show or 'Available',
                        inf,
                        dump_tuple(theme.color_role(user.role)),
                        user.affiliation or 'None',
                        inf,
                        dump_tuple(theme.color_role(user.role)),
                        user.role or 'None',
                        '\n%s' % user.status if user.status else '')
        self.add_message(info, typ=0)
        self.core.refresh_window()

    @command_args_parser.quoted(0)
    def command_configure(self, ignored):
        """
        /configure
        """
        def on_form_received(form):
            if not form:
                self.core.information(
                    'Could not retrieve the configuration form',
                    'Error')
                return
            self.core.open_new_form(form, self.cancel_config, self.send_config)

        fixes.get_room_form(self.core.xmpp, self.name, on_form_received)

    def cancel_config(self, form):
        """
        The user do not want to send his/her config, send an iq cancel
        """
        muc.cancel_config(self.core.xmpp, self.name)
        self.core.close_tab()

    def send_config(self, form):
        """
        The user sends his/her config to the server
        """
        muc.configure_room(self.core.xmpp, self.name, form)
        self.core.close_tab()

    @command_args_parser.raw
    def command_cycle(self, msg):
        """/cycle [reason]"""
        self.command_part(msg)
        self.disconnect()
        self.user_win.pos = 0
        self.core.disable_private_tabs(self.name)
        self.join()

    def join(self):
        """
        Join the room
        """
        status = self.core.get_status()
        if self.last_connection:
            delta = datetime.now() - self.last_connection
            seconds = delta.seconds + delta.days * 24 * 3600
        else:
            seconds = 0
        muc.join_groupchat(self.core, self.name, self.own_nick,
                           self.password,
                           status=status.message,
                           show=status.show,
                           seconds=seconds)

    @command_args_parser.quoted(0, 1, [''])
    def command_recolor(self, args):
        """
        /recolor [random]
        Re-assign color to the participants of the room
        """
        deterministic = config.get_by_tabname('deterministic_nick_colors', self.name)
        if deterministic:
            for user in self.users:
                if user.nick == self.own_nick:
                    continue
                color = self.search_for_color(user.nick)
                if color != '':
                    continue
                user.set_deterministic_color()
            if args[0] == 'random':
                self.core.information('"random" was provided, but poezio is '
                                      'configured to use deterministic colors',
                                      'Warning')
            self.user_win.refresh(self.users)
            self.input.refresh()
            return
        compare_users = lambda x: x.last_talked
        users = list(self.users)
        sorted_users = sorted(users, key=compare_users, reverse=True)
        full_sorted_users = sorted_users[:]
        # search our own user, to remove it from the list
        # Also remove users whose color is fixed
        for user in full_sorted_users:
            color = self.search_for_color(user.nick)
            if user.nick == self.own_nick:
                sorted_users.remove(user)
                user.color = get_theme().COLOR_OWN_NICK
            elif color != '':
                sorted_users.remove(user)
                user.change_color(color, deterministic)
        colors = list(get_theme().LIST_COLOR_NICKNAMES)
        if args[0] == 'random':
            random.shuffle(colors)
        for i, user in enumerate(sorted_users):
            user.color = colors[i % len(colors)]
        self.text_win.rebuild_everything(self._text_buffer)
        self.user_win.refresh(self.users)
        self.text_win.refresh()
        self.input.refresh()

    @command_args_parser.quoted(2, 2, [''])
    def command_color(self, args):
        """
        /color <nick> <color>
        Fix a color for a nick.
        Use "unset" instead of a color to remove the attribution.
        User "random" to attribute a random color.
        """
        if args is None:
            return self.core.command.help('color')
        nick = args[0]
        color = args[1].lower()
        user = self.get_user_by_name(nick)
        if not color in xhtml.colors and color not in ('unset', 'random'):
            return self.core.information("Unknown color: %s" % color, 'Error')
        if user and user.nick == self.own_nick:
            return self.core.information("You cannot change the color of your"
                                         " own nick.", 'Error')
        if color == 'unset':
            if config.remove_and_save(nick, 'muc_colors'):
                self.core.information('Color for nick %s unset' % (nick))
        else:
            if color == 'random':
                color = random.choice(list(xhtml.colors))
            if user:
                user.change_color(color)
            config.set_and_save(nick, color, 'muc_colors')
            nick_color_aliases = config.get_by_tabname('nick_color_aliases', self.name)
            if nick_color_aliases:
                # if any user in the room has a nick which is an alias of the
                # nick, update its color
                for tab in self.core.get_tabs(MucTab):
                    for u in tab.users:
                        nick_alias = re.sub('^_*', '', u.nick)
                        nick_alias = re.sub('_*$', '', nick_alias)
                        if nick_alias == nick:
                            u.change_color(color)
            self.text_win.rebuild_everything(self._text_buffer)
            self.user_win.refresh(self.users)
            self.text_win.refresh()
            self.input.refresh()

    @command_args_parser.quoted(1)
    def command_version(self, args):
        """
        /version <jid or nick>
        """
        def callback(res):
            if not res:
                return self.core.information('Could not get the software '
                                             'version from %s' % (jid,),
                                             'Warning')
            version = '%s is running %s version %s on %s' % (
                         jid,
                         res.get('name') or 'an unknown software',
                         res.get('version') or 'unknown',
                         res.get('os') or 'an unknown platform')
            self.core.information(version, 'Info')
        if args is None:
            return self.core.command.help('version')
        nick = args[0]
        if nick in [user.nick for user in self.users]:
            jid = safeJID(self.name).bare
            jid = safeJID(jid + '/' + nick)
        else:
            jid = safeJID(nick)
        fixes.get_version(self.core.xmpp, jid,
                          callback=callback)

    @command_args_parser.quoted(1)
    def command_nick(self, args):
        """
        /nick <nickname>
        """
        if args is None:
            return self.core.command.help('nick')
        nick = args[0]
        if not self.joined:
            return self.core.information('/nick only works in joined rooms',
                                         'Info')
        current_status = self.core.get_status()
        if not safeJID(self.name + '/' + nick):
            return self.core.information('Invalid nick', 'Info')
        muc.change_nick(self.core, self.name, nick,
                        current_status.message,
                        current_status.show)

    @command_args_parser.quoted(0, 1, [''])
    def command_part(self, args):
        """
        /part [msg]
        """
        arg = args[0]
        msg = None
        if self.joined:
            info_col = dump_tuple(get_theme().COLOR_INFORMATION_TEXT)
            char_quit = get_theme().CHAR_QUIT
            spec_col = dump_tuple(get_theme().COLOR_QUIT_CHAR)

            if config.get_by_tabname('display_user_color_in_join_part',
                                     self.general_jid):
                color = dump_tuple(get_theme().COLOR_OWN_NICK)
            else:
                color = 3

            if arg:
                msg = ('\x19%(color_spec)s}%(spec)s\x19%(info_col)s} '
                       'You (\x19%(color)s}%(nick)s\x19%(info_col)s})'
                       ' left the chatroom'
                       ' (\x19o%(reason)s\x19%(info_col)s})') % {
                           'info_col': info_col, 'reason': arg,
                           'spec': char_quit, 'color': color,
                           'color_spec': spec_col,
                           'nick': self.own_nick,
                       }
            else:
                msg = ('\x19%(color_spec)s}%(spec)s\x19%(info_col)s} '
                       'You (\x19%(color)s}%(nick)s\x19%(info_col)s})'
                       ' left the chatroom') % {
                           'info_col': info_col,
                           'spec': char_quit, 'color': color,
                           'color_spec': spec_col,
                           'nick': self.own_nick,
                       }

            self.add_message(msg, typ=2)
            self.disconnect()
            muc.leave_groupchat(self.core.xmpp, self.name, self.own_nick, arg)
            self.core.disable_private_tabs(self.name, reason=msg)
            if self == self.core.current_tab():
                self.refresh()
            self.core.doupdate()
        else:
            muc.leave_groupchat(self.core.xmpp, self.name, self.own_nick, arg)

    @command_args_parser.raw
    def command_close(self, msg):
        """
        /close [msg]
        """
        self.command_part(msg)
        self.core.close_tab(self)

    def on_close(self):
        super().on_close()
        self.command_part('')

    @command_args_parser.quoted(1, 1)
    def command_query(self, args):
        """
        /query <nick> [message]
        """
        if args is None:
            return  self.core.command.help('query')
        nick = args[0]
        r = None
        for user in self.users:
            if user.nick == nick:
                r = self.core.open_private_window(self.name, user.nick)
        if r and len(args) == 2:
            msg = args[1]
            self.core.current_tab().command_say(
                    xhtml.convert_simple_to_full_colors(msg))
        if not r:
            self.core.information("Cannot find user: %s" % nick, 'Error')

    @command_args_parser.raw
    def command_topic(self, subject):
        """
        /topic [new topic]
        """
        if not subject:
            info_text = dump_tuple(get_theme().COLOR_INFORMATION_TEXT)
            norm_text = dump_tuple(get_theme().COLOR_NORMAL_TEXT)
            if self.topic_from:
                user = self.get_user_by_name(self.topic_from)
                if user:
                    user_text = dump_tuple(user.color)
                    user_string = '\x19%s}(set by \x19%s}%s\x19%s})' % (
                            info_text, user_text, user.nick, info_text)
                else:
                    user_string = self.topic_from
            else:
                user_string = ''

            self._text_buffer.add_message(
                    "\x19%s}The subject of the room is: \x19%s}%s %s" %
                        (info_text, norm_text, self.topic, user_string))
            self.refresh()
            return

        muc.change_subject(self.core.xmpp, self.name, subject)

    @command_args_parser.quoted(0)
    def command_names(self, args):
        """
        /names
        """
        if not self.joined:
            return

        aff = {
                'owner': get_theme().CHAR_AFFILIATION_OWNER,
                'admin': get_theme().CHAR_AFFILIATION_ADMIN,
                'member': get_theme().CHAR_AFFILIATION_MEMBER,
                'none': get_theme().CHAR_AFFILIATION_NONE,
                }

        colors = {}
        colors["visitor"] = dump_tuple(get_theme().COLOR_USER_VISITOR)
        colors["moderator"] = dump_tuple(get_theme().COLOR_USER_MODERATOR)
        colors["participant"] = dump_tuple(get_theme().COLOR_USER_PARTICIPANT)
        color_other = dump_tuple(get_theme().COLOR_USER_NONE)

        buff = ['Users: %s \n' % len(self.users)]
        for user in self.users:
            affiliation = aff.get(user.affiliation,
                                  get_theme().CHAR_AFFILIATION_NONE)
            color = colors.get(user.role, color_other)
            buff.append('\x19%s}%s\x19o\x19%s}%s\x19o' % (
                color, affiliation, dump_tuple(user.color), user.nick))

        buff.append('\n')
        message = ' '.join(buff)

        self._text_buffer.add_message(message)
        self.text_win.refresh()
        self.input.refresh()

    def completion_topic(self, the_input):
        if the_input.get_argument_position() == 1:
            return the_input.auto_completion([self.topic], '', quotify=False)

    def completion_quoted(self, the_input):
        """Nick completion, but with quotes"""
        if the_input.get_argument_position(quoted=True) == 1:
            compare_users = lambda x: x.last_talked
            word_list = []
            for user in sorted(self.users, key=compare_users, reverse=True):
                if user.nick != self.own_nick:
                    word_list.append(user.nick)

            return the_input.new_completion(word_list, 1, quotify=True)

    @command_args_parser.quoted(1, 1)
    def command_kick(self, args):
        """
        /kick <nick> [reason]
        """
        if args is None:
            return self.core.command.help('kick')
        if len(args) == 2:
            msg = ' "%s"' % args[1]
        else:
            msg = ''
        self.command_role('"'+args[0]+ '" none'+msg)

    @command_args_parser.quoted(1, 1)
    def command_ban(self, args):
        """
        /ban <nick> [reason]
        """
        def callback(iq):
            if iq['type'] == 'error':
                self.core.room_error(iq, self.name)
        if args is None:
            return self.core.command.help('ban')
        if len(args) > 1:
            msg = args[1]
        else:
            msg = ''
        nick = args[0]

        if nick in [user.nick for user in self.users]:
            res = muc.set_user_affiliation(self.core.xmpp, self.name,
                                           'outcast', nick=nick,
                                           callback=callback, reason=msg)
        else:
            res = muc.set_user_affiliation(self.core.xmpp, self.name,
                                           'outcast', jid=safeJID(nick),
                                           callback=callback, reason=msg)
        if not res:
            self.core.information('Could not ban user', 'Error')

    @command_args_parser.quoted(2, 1, [''])
    def command_role(self, args):
        """
        /role <nick> <role> [reason]
        Changes the role of an user
        roles can be: none, visitor, participant, moderator
        """
        def callback(iq):
            if iq['type'] == 'error':
                self.core.room_error(iq, self.name)

        if args is None:
            return self.core.command.help('role')

        nick, role, reason = args[0], args[1].lower(), args[2]

        valid_roles = ('none', 'visitor', 'participant', 'moderator')

        if not self.joined or role not in valid_roles:
            return self.core.information('The role must be one of ' + ', '.join(valid_roles),
                                         'Error')

        if not safeJID(self.name + '/' + nick):
            return self.core.information('Invalid nick', 'Info')
        muc.set_user_role(self.core.xmpp, self.name, nick, reason, role,
                          callback=callback)

    @command_args_parser.quoted(2)
    def command_affiliation(self, args):
        """
        /affiliation <nick> <role>
        Changes the affiliation of an user
        affiliations can be: outcast, none, member, admin, owner
        """
        def callback(iq):
            if iq['type'] == 'error':
                self.core.room_error(iq, self.name)

        if args is None:
            return self.core.command.help('affiliation')

        nick, affiliation = args[0], args[1].lower()

        if not self.joined:
            return

        valid_affiliations = ('outcast', 'none', 'member', 'admin', 'owner')
        if affiliation not in valid_affiliations:
            return self.core.information('The affiliation must be one of ' + ', '.join(valid_affiliations),
                                         'Error')

        if nick in [user.nick for user in self.users]:
            res = muc.set_user_affiliation(self.core.xmpp, self.name,
                                           affiliation, nick=nick,
                                           callback=callback)
        else:
            res = muc.set_user_affiliation(self.core.xmpp, self.name,
                                           affiliation, jid=safeJID(nick),
                                           callback=callback)
        if not res:
            self.core.information('Could not set affiliation', 'Error')

    @command_args_parser.raw
    def command_say(self, line, correct=False):
        """
        /say <message>
        Or normal input + enter
        """
        needed = 'inactive' if self.inactive else 'active'
        msg = self.core.xmpp.make_message(self.name)
        msg['type'] = 'groupchat'
        msg['body'] = line
        # trigger the event BEFORE looking for colors.
        # This lets a plugin insert \x19xxx} colors, that will
        # be converted in xhtml.
        self.core.events.trigger('muc_say', msg, self)
        if not msg['body']:
            self.cancel_paused_delay()
            self.text_win.refresh()
            self.input.refresh()
            return
        if msg['body'].find('\x19') != -1:
            msg.enable('html')
            msg['html']['body'] = xhtml.poezio_colors_to_html(msg['body'])
            msg['body'] = xhtml.clean_text(msg['body'])
        if (config.get_by_tabname('send_chat_states', self.general_jid)
                and self.remote_wants_chatstates is not False):
            msg['chat_state'] = needed
        if correct:
            msg['replace']['id'] = self.last_sent_message['id']
        self.cancel_paused_delay()
        self.core.events.trigger('muc_say_after', msg, self)
        if not msg['body']:
            self.cancel_paused_delay()
            self.text_win.refresh()
            self.input.refresh()
            return
        self.last_sent_message = msg
        msg.send()
        self.chat_state = needed

    @command_args_parser.raw
    def command_xhtml(self, msg):
        message = self.generate_xhtml_message(msg)
        if message:
            message['type'] = 'groupchat'
            message.send()

    @command_args_parser.quoted(1)
    def command_ignore(self, args):
        """
        /ignore <nick>
        """
        if args is None:
            return self.core.command.help('ignore')

        nick = args[0]
        user = self.get_user_by_name(nick)
        if not user:
            self.core.information('%s is not in the room' % nick)
        elif user in self.ignores:
            self.core.information('%s is already ignored' % nick)
        else:
            self.ignores.append(user)
            self.core.information("%s is now ignored" % nick, 'info')

    @command_args_parser.quoted(1)
    def command_unignore(self, args):
        """
        /unignore <nick>
        """
        if args is None:
            return self.core.command.help('unignore')

        nick = args[0]
        user = self.get_user_by_name(nick)
        if not user:
            self.core.information('%s is not in the room' % nick)
        elif user not in self.ignores:
            self.core.information('%s is not ignored' % nick)
        else:
            self.ignores.remove(user)
            self.core.information('%s is now unignored' % nick)

    def completion_unignore(self, the_input):
        if the_input.get_argument_position() == 1:
            users = [user.nick for user in self.ignores]
            return the_input.auto_completion(users, quotify=False)

    def resize(self):
        """
        Resize the whole window. i.e. all its sub-windows
        """
        self.need_resize = False
        if config.get('hide_user_list') or self.size.tab_degrade_x:
            display_user_list = False
            text_width = self.width
        else:
            display_user_list = True
            text_width = (self.width // 10) * 9

        if self.size.tab_degrade_y:
            display_info_win = False
            tab_win_height = 0
            info_win_height = 0
        else:
            display_info_win = True
            tab_win_height = Tab.tab_win_height()
            info_win_height = self.core.information_win_size


        self.user_win.resize(self.height - 3 - info_win_height
                                - tab_win_height,
                             self.width - (self.width // 10) * 9 - 1,
                             1,
                             (self.width // 10) * 9 + 1)
        self.v_separator.resize(self.height - 3 - info_win_height - tab_win_height,
                                1, 1, 9 * (self.width // 10))

        self.topic_win.resize(1, self.width, 0, 0)

        self.text_win.resize(self.height - 3 - info_win_height
                                - tab_win_height,
                             text_width, 1, 0)
        self.text_win.rebuild_everything(self._text_buffer)
        self.info_header.resize(1, self.width,
                                self.height - 2 - info_win_height
                                    - tab_win_height,
                                0)
        self.input.resize(1, self.width, self.height-1, 0)

    def refresh(self):
        if self.need_resize:
            self.resize()
        log.debug('  TAB   Refresh: %s', self.__class__.__name__)
        if config.get('hide_user_list') or self.size.tab_degrade_x:
            display_user_list = False
        else:
            display_user_list = True
        display_info_win = not self.size.tab_degrade_y

        self.topic_win.refresh(self.get_single_line_topic())
        self.text_win.refresh()
        if display_user_list:
            self.v_separator.refresh()
            self.user_win.refresh(self.users)
        self.info_header.refresh(self, self.text_win, user=self.own_user)
        self.refresh_tab_win()
        if display_info_win:
            self.info_win.refresh()
        self.input.refresh()

    def on_input(self, key, raw):
        if not raw and key in self.key_func:
            self.key_func[key]()
            return False
        self.input.do_command(key, raw=raw)
        empty_after = self.input.get_text() == ''
        empty_after = empty_after or (self.input.get_text().startswith('/')
                                      and not
                                      self.input.get_text().startswith('//'))
        self.send_composing_chat_state(empty_after)
        return False

    def completion(self):
        """
        Called when Tab is pressed, complete the nickname in the input
        """
        if self.complete_commands(self.input):
            return