text: """
  Module for the base Tabs
  
  The root class Tab defines the generic interface and attributes of a
  tab. A tab organizes various Windows around the screen depending
  of the tab specificity. If the tab shows messages, it will also
  reference a buffer containing the messages.
  
  Each subclass should redefine its own refresh() and resize() method
  according to its windows.
  
  This module also defines ChatTabs, the parent class for all tabs
  revolving around chats.
  """
  
  import logging
  import string
  import time
  from datetime import datetime
  from xml.etree import cElementTree as ET
  from typing import Any, Callable, Dict, List, Optional
  
  from slixmpp import JID, Message
  
  from poezio.core.structs import Command, Completion, Status
  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
  from poezio.logger import logger
  from poezio.text_buffer import TextBuffer
  from poezio.theming import get_theme, dump_tuple
  from poezio.decorators import command_args_parser
  
  log = logging.getLogger(__name__)
  
  # getters for tab colors (lambdas, so that they are dynamic)
  STATE_COLORS = {
      'disconnected': lambda: get_theme().COLOR_TAB_DISCONNECTED,
      'scrolled': lambda: get_theme().COLOR_TAB_SCROLLED,
      'nonempty': lambda: get_theme().COLOR_TAB_NONEMPTY,
      'joined': lambda: get_theme().COLOR_TAB_JOINED,
      'message': lambda: get_theme().COLOR_TAB_NEW_MESSAGE,
      'composing': lambda: get_theme().COLOR_TAB_COMPOSING,
      'highlight': lambda: get_theme().COLOR_TAB_HIGHLIGHT,
      'private': lambda: get_theme().COLOR_TAB_PRIVATE,
      'normal': lambda: get_theme().COLOR_TAB_NORMAL,
      'current': lambda: get_theme().COLOR_TAB_CURRENT,
      'attention': lambda: get_theme().COLOR_TAB_ATTENTION,
  }
  VERTICAL_STATE_COLORS = {
      'disconnected': lambda: get_theme().COLOR_VERTICAL_TAB_DISCONNECTED,
      'scrolled': lambda: get_theme().COLOR_VERTICAL_TAB_SCROLLED,
      'nonempty': lambda: get_theme().COLOR_VERTICAL_TAB_NONEMPTY,
      'joined': lambda: get_theme().COLOR_VERTICAL_TAB_JOINED,
      'message': lambda: get_theme().COLOR_VERTICAL_TAB_NEW_MESSAGE,
      'composing': lambda: get_theme().COLOR_VERTICAL_TAB_COMPOSING,
      'highlight': lambda: get_theme().COLOR_VERTICAL_TAB_HIGHLIGHT,
      'private': lambda: get_theme().COLOR_VERTICAL_TAB_PRIVATE,
      'normal': lambda: get_theme().COLOR_VERTICAL_TAB_NORMAL,
      'current': lambda: get_theme().COLOR_VERTICAL_TAB_CURRENT,
      'attention': lambda: get_theme().COLOR_VERTICAL_TAB_ATTENTION,
  }
  
  # priority of the different tab states when using Alt+e
  # higher means more priority, < 0 means not selectable
  STATE_PRIORITY = {
      'normal': -1,
      'current': -1,
      'disconnected': 0,
      'nonempty': 0.1,
      'scrolled': 0.5,
      'joined': 0.8,
      'composing': 0.9,
      'message': 1,
      'highlight': 2,
      'private': 2,
      'attention': 3
  }
  
  SHOW_NAME = {
      'dnd': 'busy',
      'away': 'away',
      'xa': 'not available',
      'chat': 'chatty',
      '': 'available'
  }
  
  
  class Tab:
      plugin_commands = {}  # type: Dict[str, Command]
      plugin_keys = {}  # type: Dict[str, Callable]
      # Placeholder values, set on resize
      height = 1
      width = 1
  
      def __init__(self, core):
          self.core = core
          self.nb = 0
          if not hasattr(self, 'name'):
              self.name = self.__class__.__name__
          self.input = None
          self.closed = False
          self._state = 'normal'
          self._prev_state = None
  
          self.need_resize = False
          self.key_func = {}  # each tab should add their keys in there
          # and use them in on_input
          self.commands = {}  # and their own commands
  
      @property
      def size(self) -> int:
          return self.core.size
  
      @staticmethod
      def tab_win_height() -> int:
          """
          Returns 1 or 0, depending on if we are using the vertical tab list
          or not.
          """
          if config.get('enable_vertical_tab_list'):
              return 0
          return 1
  
      @property
      def info_win(self):
          return self.core.information_win
  
      @property
      def color(self):
          return STATE_COLORS[self._state]()
  
      @property
      def vertical_color(self):
          return VERTICAL_STATE_COLORS[self._state]()
  
      @property
      def state(self) -> str:
          return self._state
  
      @state.setter
      def state(self, value: str):
          if value not in STATE_COLORS:
              log.debug("Invalid value for tab state: %s", value)
          elif STATE_PRIORITY[value] < STATE_PRIORITY[self._state] and \
                  value not in ('current', 'disconnected') and \
                  not (self._state == 'scrolled' and value == 'disconnected'):
              log.debug(
                  "Did not set state because of lower priority, asked: %s, kept: %s",
                  value, self._state)
          elif self._state == 'disconnected' and value not in ('joined',
                                                               'current'):
              log.debug(
                  'Did not set state because disconnected tabs remain visible')
          else:
              self._state = value
              if self._state == 'current':
                  self._prev_state = None
  
      def set_state(self, value: str):
          self._state = value
  
      def save_state(self):
          if self._state != 'composing':
              self._prev_state = self._state
  
      def restore_state(self):
          if self.state == 'composing' and self._prev_state:
              self._state = self._prev_state
              self._prev_state = None
          elif not self._prev_state:
              self._state = 'normal'
  
      @staticmethod
      def resize(scr):
          Tab.height, Tab.width = scr.getmaxyx()
          windows.base_wins.TAB_WIN = scr
  
      def missing_command_callback(self, command_name):
          """
          Callback executed when a command is not found.
          Returns True if the callback took care of displaying
          the error message, False otherwise.
          """
          return False
  
      def register_commands_batch(self, commands: List[Dict[str, Any]]):
          """
          Add several commands in a row, using a list of dictionaries
          """
          for command in commands:
              name = command['name']
              func = command['func']
              desc = command.get('desc', '')
              shortdesc = command.get('shortdesc', '')
              completion = command.get('completion')
              usage = command.get('usage', '')
              self.register_command(
                  name,
                  func,
                  desc=desc,
                  shortdesc=shortdesc,
                  completion=completion,
                  usage=usage)
  
      def register_command(self,
                           name: str,
                           func: Callable,
                           *,
                           desc='',
                           shortdesc='',
                           completion: Optional[Callable] = None,
                           usage=''):
          """
          Add a command
          """
          if name in self.commands:
              return
          if not desc and shortdesc:
              desc = shortdesc
          self.commands[name] = Command(func, desc, completion, shortdesc, usage)
  
      def complete_commands(self, the_input: windows.Input) -> bool:
          """
          Does command completion on the specified input for both global and tab-specific
          commands.
          This should be called from the completion method (on tab, for example), passing
          the input where completion is to be made.
          It can completion the command name itself or an argument of the command.
          Returns True if a completion was made, False else.
          """
          txt = the_input.get_text()
          # check if this is a command
          if txt.startswith('/') and not txt.startswith('//'):
              position = the_input.get_argument_position(quoted=False)
              if position == 0:
                  words = ['/%s'% (name) for name in sorted(self.core.commands)] +\
                      ['/%s' % (name) for name in sorted(self.commands)]
                  the_input.new_completion(words, 0)
                  # Do not try to cycle command completion if there was only
                  # one possibily. The next tab will complete the argument.
                  # Otherwise we would need to add a useless space before being
                  # able to complete the arguments.
                  hit_copy = set(the_input.hit_list)
                  if len(hit_copy) == 1:
                      the_input.do_command(' ')
                      the_input.reset_completion()
                  return True
              # check if we are in the middle of the command name
              elif len(txt.split()) > 1 or\
                      (txt.endswith(' ') and not the_input.last_completion):
                  command_name = txt.split()[0][1:]
                  if command_name in self.commands:
                      command = self.commands[command_name]
                  elif command_name in self.core.commands:
                      command = self.core.commands[command_name]
                  else:  # Unknown command, cannot complete
                      return False
                  if command.comp is None:
                      return False  # There's no completion function
                  comp = command.comp(the_input)
                  if comp:
                      return comp.run()
                  return comp
          return False
  
      def execute_command(self, provided_text: str) -> bool:
          """
          Execute the command in the input and return False if
          the input didn't contain a command
          """
          txt = provided_text or self.input.key_enter()
          if txt.startswith('/') and not txt.startswith('//') and\
                  not txt.startswith('/me '):
              command = txt.strip().split()[0][1:]
              arg = txt[2 + len(command):]  # jump the '/' and the ' '
              func = None
              if command in self.commands:  # check tab-specific commands
                  func = self.commands[command].func
              elif command in self.core.commands:  # check global commands
                  func = self.core.commands[command].func
              else:
                  low = command.lower()
                  if low in self.commands:
                      func = self.commands[low].func
                  elif low in self.core.commands:
                      func = self.core.commands[low].func
                  else:
                      if self.missing_command_callback is not None:
                          error_handled = self.missing_command_callback(low)
                      if not error_handled:
                          self.core.information(
                              "Unknown command (%s)" % (command), 'Error')
              if command in ('correct', 'say'):  # hack
                  arg = xhtml.convert_simple_to_full_colors(arg)
              else:
                  arg = xhtml.clean_text_simple(arg)
              if func:
                  if hasattr(self.input, "reset_completion"):
                      self.input.reset_completion()
                  func(arg)
              return True
          else:
              return False
  
      def refresh_tab_win(self):
          if config.get('enable_vertical_tab_list'):
              left_tab_win = self.core.left_tab_win
              if left_tab_win and not self.size.core_degrade_x:
                  left_tab_win.refresh()
          elif not self.size.core_degrade_y:
              self.core.tab_win.refresh()
  
      def refresh_input(self):
          """Refresh the current input if any"""
          if self.input is not None:
              self.input.refresh()
              self.core.doupdate()
  
      def refresh(self):
          """
          Called on each screen refresh (when something has changed)
          """
          pass
  
      def get_name(self):
          """
          get the name of the tab
          """
          return self.name
  
      def get_nick(self) -> str:
          """
          Get the nick of the tab (defaults to its name)
          """
          return self.name
  
      def get_text_window(self) -> Optional[windows.TextWin]:
          """
          Returns the principal TextWin window, if there's one
          """
          return None
  
      def on_input(self, key: str, raw: bool):
          """
          raw indicates if the key should activate the associated command or not.
          """
          pass
  
      def update_commands(self):
          for c in self.plugin_commands:
              if c not in self.commands:
                  self.commands[c] = self.plugin_commands[c]
  
      def update_keys(self):
          for k in self.plugin_keys:
              if k not in self.key_func:
                  self.key_func[k] = self.plugin_keys[k]
  
      def on_lose_focus(self):
          """
          called when this tab loses the focus.
          """
          self.state = 'normal'
  
      def on_gain_focus(self):
          """
          called when this tab gains the focus.
          """
          self.state = 'current'
  
      def on_scroll_down(self):
          """
          Defines what happens when we scroll down
          """
          pass
  
      def on_scroll_up(self):
          """
          Defines what happens when we scroll up
          """
          pass
  
      def on_line_up(self):
          """
          Defines what happens when we scroll one line up
          """
          pass
  
      def on_line_down(self):
          """
          Defines what happens when we scroll one line up
          """
          pass
  
      def on_half_scroll_down(self):
          """
          Defines what happens when we scroll half a screen down
          """
          pass
  
      def on_half_scroll_up(self):
          """
          Defines what happens when we scroll half a screen up
          """
          pass
  
      def on_info_win_size_changed(self):
          """
          Called when the window with the information is resized
          """
          pass
  
      def on_close(self):
          """
          Called when the tab is to be closed
          """
          if self.input:
              self.input.on_delete()
          self.closed = True
  
      def matching_names(self) -> List[str]:
          """
          Returns a list of strings that are used to name a tab with the /win
          command.  For example you could switch to a tab that returns
          ['hello', 'coucou'] using /win hel, or /win coucou
          If not implemented in the tab, it just doesn’t match with anything.
          """
          return []
  
      def __del__(self):
          log.debug('------ Closing tab %s', self.__class__.__name__)
  
  
  class GapTab(Tab):
      def __bool__(self):
          return False
  
      def __len__(self):
          return 0
  
      @property
      def name(self):
          return ''
  
      def refresh(self):
          log.debug(
              'WARNING: refresh() called on a gap tab, this should not happen')
  
  
  class ChatTab(Tab):
      """
      A tab containing a chat of any type.
      Just use this class instead of Tab if the tab needs a recent-words completion
      Also, ^M is already bound to on_enter
      And also, add the /say command
      """
      plugin_commands = {}  # type: Dict[str, Command]
      plugin_keys = {}  # type: Dict[str, Callable]
      message_type = 'chat'
  
      def __init__(self, core, jid=''):
          Tab.__init__(self, core)
          self.name = jid
          self.text_win = None
          self.directed_presence = None
          self._text_buffer = TextBuffer()
          self.chatstate = None  # can be "active", "composing", "paused", "gone", "inactive"
          # We keep a reference of the event that will set our chatstate to "paused", so that
          # we can delete it or change it if we need to
          self.timed_event_paused = None
          self.timed_event_not_paused = None
          # Keeps the last sent message to complete it easily in completion_correct, and to replace it.
          self.last_sent_message = {}
          self.key_func['M-v'] = self.move_separator
          self.key_func['M-h'] = self.scroll_separator
          self.key_func['M-/'] = self.last_words_completion
          self.key_func['^M'] = self.on_enter
          self.register_command(
              'say',
              self.command_say,
              usage='<message>',
              shortdesc='Send the message.')
          self.register_command(
              'xhtml',
              self.command_xhtml,
              usage='<custom xhtml>',
              shortdesc='Send custom XHTML.')
          self.register_command(
              'clear', self.command_clear, shortdesc='Clear the current buffer.')
          self.register_command(
              'correct',
              self.command_correct,
              desc='Fix the last message with whatever you want.',
              shortdesc='Correct the last message.',
              completion=self.completion_correct)
          self.chat_state = None
          self.update_commands()
          self.update_keys()
  
          # Get the logs
          log_nb = config.get('load_log')
          logs = self.load_logs(log_nb)
  
          if logs:
              for message in logs:
                  self._text_buffer.add_message(**message)
  
      @property
      def general_jid(self) -> JID:
          return NotImplementedError
  
      def load_logs(self, log_nb: int) -> Optional[List[Dict[str, Any]]]:
          logs = logger.get_logs(safeJID(self.name).bare, log_nb)
          return logs
  
      def log_message(self,
                      txt: str,
                      nickname: str,
                      time: Optional[datetime] = None,
                      typ=1):
          """
          Log the messages in the archives.
          """
          name = safeJID(self.name).bare
          if not logger.log_message(name, nickname, txt, date=time, typ=typ):
              self.core.information('Unable to write in the log file', 'Error')
  
      def add_message(self,
                      txt,
                      time=None,
                      nickname=None,
                      forced_user=None,
                      nick_color=None,
                      identifier=None,
                      jid=None,
                      history=None,
                      typ=1,
                      highlight=False):
          self.log_message(txt, nickname, time=time, typ=typ)
          self._text_buffer.add_message(
              txt,
              time=time,
              nickname=nickname,
              highlight=highlight,
              nick_color=nick_color,
              history=history,
              user=forced_user,
              identifier=identifier,
              jid=jid)
  
      def modify_message(self,
                         txt,
                         old_id,
                         new_id,
                         user=None,
                         jid=None,
                         nickname=None):
          self.log_message(txt, nickname, typ=1)
          message = self._text_buffer.modify_message(
              txt, old_id, new_id, time=time, user=user, jid=jid)
          if message:
              self.text_win.modify_message(old_id, message)
              self.core.refresh_window()
              return True
          return False
  
      def last_words_completion(self):
          """
          Complete the input with words recently said
          """
          # build the list of the recent words
          char_we_dont_want = string.punctuation + ' ’„“”…«»'
          words = []
          for msg in self._text_buffer.messages[:-40:-1]:
              if not msg:
                  continue
              txt = xhtml.clean_text(msg.txt)
              for char in char_we_dont_want:
                  txt = txt.replace(char, ' ')
              for word in txt.split():
                  if len(word) >= 4 and word not in words:
                      words.append(word)
          words.extend([word for word in config.get('words').split(':') if word])
          self.input.auto_completion(words, ' ', quotify=False)
  
      def on_enter(self):
          txt = self.input.key_enter()
          if txt:
              if not self.execute_command(txt):
                  if txt.startswith('//'):
                      txt = txt[1:]
                  self.command_say(xhtml.convert_simple_to_full_colors(txt))
          self.cancel_paused_delay()
  
      @command_args_parser.raw
      def command_xhtml(self, xhtml):
          """"
          /xhtml <custom xhtml>
          """
          message = self.generate_xhtml_message(xhtml)
          if message:
              message.send()
  
      def generate_xhtml_message(self, arg: str) -> Message:
          if not arg:
              return
          try:
              body = xhtml.clean_text(
                  xhtml.xhtml_to_poezio_colors(arg, force=True))
              ET.fromstring(arg)
          except:
              self.core.information('Could not send custom xhtml', 'Error')
              log.error('/xhtml: Unable to send custom xhtml', exc_info=True)
              return
  
          msg = self.core.xmpp.make_message(self.get_dest_jid())
          msg['body'] = body
          msg.enable('html')
          msg['html']['body'] = arg
          return msg
  
      def get_dest_jid(self) -> JID:
          return self.name
  
      @refresh_wrapper.always
      def command_clear(self, ignored):
          """
          /clear
          """
          self._text_buffer.messages = []
          self.text_win.rebuild_everything(self._text_buffer)
  
      def check_send_chat_state(self):
          "If we should send a chat state"
          return True
  
      def send_chat_state(self, state, always_send=False):
          """
          Send an empty chatstate message
          """
          if self.check_send_chat_state():
              if state in ('active', 'inactive',
                           'gone') and self.inactive and not always_send:
                  return
              if config.get_by_tabname('send_chat_states', self.general_jid):
                  msg = self.core.xmpp.make_message(self.get_dest_jid())
                  msg['type'] = self.message_type
                  msg['chat_state'] = state
                  self.chat_state = state
                  msg.send()
                  return True
  
      def send_composing_chat_state(self, empty_after):
          """
          Send the "active" or "composing" chatstate, depending
          on the the current status of the input
          """
          name = self.general_jid
          if config.get_by_tabname('send_chat_states', name):
              needed = 'inactive' if self.inactive else 'active'
              self.cancel_paused_delay()
              if not empty_after:
                  if self.chat_state != "composing":
                      self.send_chat_state("composing")
                  self.set_paused_delay(True)
              elif empty_after and self.chat_state != needed:
                  self.send_chat_state(needed, True)
  
      def set_paused_delay(self, composing):
          """
          we create a timed event that will put us to paused
          in a few seconds
          """
          if not config.get_by_tabname('send_chat_states', self.general_jid):
              return
          # First, cancel the delay if it already exists, before rescheduling
          # it at a new date
          self.cancel_paused_delay()
          new_event = timed_events.DelayedEvent(4, self.send_chat_state,
                                                'paused')
          self.core.add_timed_event(new_event)
          self.timed_event_paused = new_event
          new_event = timed_events.DelayedEvent(
              30, self.send_chat_state, 'inactive'
              if self.inactive else 'active')
          self.core.add_timed_event(new_event)
          self.timed_event_not_paused = new_event
  
      def cancel_paused_delay(self):
          """
          Remove that event from the list and set it to None.
          Called for example when the input is emptied, or when the message
          is sent
          """
          if self.timed_event_paused is not None:
              self.core.remove_timed_event(self.timed_event_paused)
              self.timed_event_paused = None
              self.core.remove_timed_event(self.timed_event_not_paused)
              self.timed_event_not_paused = None
  
      @command_args_parser.raw
      def command_correct(self, line):
          """
          /correct <fixed message>
          """
          if not line:
              self.core.command.help('correct')
              return
          if not self.last_sent_message:
              self.core.information('There is no message to correct.', 'Error')
              return
          self.command_say(line, correct=True)
  
      def completion_correct(self, the_input):
          if self.last_sent_message and the_input.get_argument_position() == 1:
              return Completion(
                  the_input.auto_completion, [self.last_sent_message['body']],
                  '',
                  quotify=False)
          return True
  
      @property
      def inactive(self) -> bool:
          """Whether we should send inactive or active as a chatstate"""
          return self.core.status.show in ('xa', 'away') or\
                  (hasattr(self, 'directed_presence') and not self.directed_presence)
  
      def move_separator(self):
          self.text_win.remove_line_separator()
          self.text_win.add_line_separator(self._text_buffer)
          self.text_win.refresh()
          self.input.refresh()
  
      def get_conversation_messages(self):
          return self._text_buffer.messages
  
      def check_scrolled(self):
          if self.text_win.pos != 0:
              self.state = 'scrolled'
  
      @command_args_parser.raw
      def command_say(self, line, correct=False):
          pass
  
      def on_line_up(self):
          return self.text_win.scroll_up(1)
  
      def on_line_down(self):
          return self.text_win.scroll_down(1)
  
      def on_scroll_up(self):
          return self.text_win.scroll_up(self.text_win.height - 1)
  
      def on_scroll_down(self):
          return self.text_win.scroll_down(self.text_win.height - 1)
  
      def on_half_scroll_up(self):
          return self.text_win.scroll_up((self.text_win.height - 1) // 2)
  
      def on_half_scroll_down(self):
          return self.text_win.scroll_down((self.text_win.height - 1) // 2)
  
      @refresh_wrapper.always
      def scroll_separator(self):
          self.text_win.scroll_to_separator()
  
  
  class OneToOneTab(ChatTab):
      def __init__(self, core, jid=''):
          ChatTab.__init__(self, core, jid)
  
          self.__status = Status("", "")
          self.last_remote_message = datetime.now()
  
          # Set to true once the first disco is done
          self.__initial_disco = False
          self.check_features()
          self.register_command(
              'unquery', self.command_unquery, shortdesc='Close the tab.')
          self.register_command(
              'close', self.command_unquery, shortdesc='Close the tab.')
          self.register_command(
              'attention',
              self.command_attention,
              usage='[message]',
              shortdesc='Request the attention.',
              desc='Attention: Request the attention of the contact.  Can also '
              'send a message along with the attention.')
  
      def remote_user_color(self):
          return dump_tuple(get_theme().COLOR_REMOTE_USER)
  
      def update_status(self, status):
          old_status = self.__status
          if not (old_status.show != status.show
                  or old_status.message != status.message):
              return
          self.__status = status
          hide_status_change = config.get_by_tabname('hide_status_change',
                                                     safeJID(self.name).bare)
          now = datetime.now()
          dff = now - self.last_remote_message
          if hide_status_change > -1 and dff.total_seconds() > hide_status_change:
              return
  
          info_c = dump_tuple(get_theme().COLOR_INFORMATION_TEXT)
          nick = self.get_nick()
          remote = self.remote_user_color()
          msg = '\x19%(color)s}%(nick)s\x19%(info)s} changed: '
          msg %= {'color': remote, 'nick': nick, 'info': info_c}
          if status.message != old_status.message and status.message:
              msg += 'status: %s, ' % status.message
          if status.show in SHOW_NAME:
              msg += 'show: %s, ' % SHOW_NAME[status.show]
          self.add_message(msg[:-2], typ=2)
  
      def ack_message(self, msg_id, msg_jid):
          """
          Ack a message
          """
          new_msg = self._text_buffer.ack_message(msg_id, msg_jid)
          if new_msg:
              self.text_win.modify_message(msg_id, new_msg)
              self.core.refresh_window()
  
      def nack_message(self, error, msg_id, msg_jid):
          """
          Ack a message
          """
          new_msg = self._text_buffer.nack_message(error, msg_id, msg_jid)
          if new_msg:
              self.text_win.modify_message(msg_id, new_msg)
              self.core.refresh_window()
              return True
          return False
  
      @command_args_parser.raw
      def command_xhtml(self, xhtml_data):
          message = self.generate_xhtml_message(xhtml_data)
          if message:
              message['type'] = 'chat'
              message._add_receipt = True
              message['chat_sate'] = 'active'
              message.send()
              body = xhtml.xhtml_to_poezio_colors(xhtml_data, force=True)
              self._text_buffer.add_message(
                  body,
                  nickname=self.core.own_nick,
                  nick_color=get_theme().COLOR_OWN_NICK,
                  identifier=message['id'],
                  jid=self.core.xmpp.boundjid)
              self.refresh()
  
      def check_features(self):
          "check the features supported by the other party"
          if safeJID(self.get_dest_jid()).resource:
              self.core.xmpp.plugin['xep_0030'].get_info(
                  jid=self.get_dest_jid(),
                  timeout=5,
                  callback=self.features_checked)
  
      @command_args_parser.raw
      def command_attention(self, message):
          """/attention [message]"""
          if message is not '':
              self.command_say(message, attention=True)
          else:
              msg = self.core.xmpp.make_message(self.get_dest_jid())
              msg['type'] = 'chat'
              msg['attention'] = True
              msg.send()
  
      @command_args_parser.raw
      def command_say(self, line, correct=False, attention=False):
          pass
  
      @command_args_parser.ignored
      def command_unquery(self):
          """
          /unquery
          """
          self.send_chat_state('gone', always_send=True)
          self.core.close_tab(self)
  
      def missing_command_callback(self, command_name):
          if command_name not in ('correct', 'attention'):
              return False
  
          if command_name == 'correct':
              feature = 'message correction'
          elif command_name == 'attention':
              feature = 'attention requests'
          msg = ('%s does not support %s, therefore the /%s '
                 'command is currently disabled in this tab.')
          msg = msg % (self.name, feature, command_name)
          self.core.information(msg, 'Info')
          return True
  
      def features_checked(self, iq):
          "Features check callback"
          features = iq['disco_info'].get_features() or []
  