class Controller(Observer):
"""
The :class:`Controller`.
"""
# Modes
INFO_MODE = 0
TIMELINE_MODE = 1
HELP_MODE = 2
EDITOR_MODE = 3
USER_INFO_MODE = 4
# -- Initialization -------------------------------------------------------
def __init__(self, ui, api, timelines):
# View
self.ui = ui
self.api = api
self.timelines = timelines
# Load session
self.session = Session(self.api)
self.session.populate(self.timelines)
self.editor = None
# Default Mode
self.mode = self.INFO_MODE
# Subscribe to model updates
self.timelines.subscribe(self)
signal.signal(signal.SIGCONT, self.handle_sigcont)
def start(self):
self.main_loop()
def handle_sigcont(self, signum, stack_frame):
self.loop.screen.stop()
self.loop.screen.start()
self.redraw_screen()
def authenticate_api(self):
self.info_message(_('Authenticating API'))
self.api.init_api(on_error=self.api_init_error,
on_success=self.init_timelines,)
@async
def init_timelines(self):
# API has to be authenticated
while (not self.api.is_authenticated):
pass
# fetch the authenticated user
self.user = self.api.verify_credentials()
# initialize the timelines
self.info_message(_('Fetching timelines'))
for timeline in self.timelines:
timeline.update()
timeline.activate_first()
self.timeline_mode()
self.clear_status()
# Main loop has to be running
while not getattr(self, 'loop'):
pass
# update alarm
seconds = configuration.twitter['update_frequency']
self.loop.set_alarm_in(seconds, self.update_alarm)
def main_loop(self):
"""
Launch the main loop of the program.
"""
if not hasattr(self, 'loop'):
# Creating the main loop for the first time
self.input_handler = InputHandler(self)
self.loop = urwid.MainLoop(
self.ui,
configuration.palette,
handle_mouse=True,
unhandled_input=self.input_handler.handle,
input_filter=self.input_handler.filter_input)
# Authenticate API just before starting main loop
self.authenticate_api()
try:
self.loop.run()
except TweepError, message:
logging.exception(message)
self.error_message(_('API error: %s' % message))
# recover from API errors
self.main_loop()
except KeyboardInterrupt:
# treat Ctrl-C as Escape
self.input_handler.handle('esc')
self.main_loop()
class Controller(Observer):
"""
The :class:`Controller`.
"""
# Modes
INFO_MODE = 0
TIMELINE_MODE = 1
HELP_MODE = 2
EDITOR_MODE = 3
USER_INFO_MODE = 4
# -- Initialization -------------------------------------------------------
def __init__(self, ui, api, timelines):
# View
self.ui = ui
self.api = api
self.timelines = timelines
# Load session
self.session = Session(self.api)
self.session.populate(self.timelines)
self.editor = None
# Default Mode
self.mode = self.INFO_MODE
# Subscribe to model updates
self.timelines.subscribe(self)
signal.signal(signal.SIGCONT, self.handle_sigcont)
def start(self):
self.main_loop()
def handle_sigcont(self, signum, stack_frame):
self.loop.screen.stop()
self.loop.screen.start()
self.redraw_screen()
def authenticate_api(self):
self.info_message(_('Authenticating API'))
self.api.init_api(
on_error=self.api_init_error,
on_success=self.init_timelines,
)
@async_thread
def init_timelines(self):
# API has to be authenticated
while (not self.api.is_authenticated):
pass
# fetch the authenticated user
self.user = self.api.verify_credentials()
# initialize the timelines
self.info_message(_('Fetching timelines'))
for timeline in self.timelines:
timeline.update()
timeline.activate_first()
self.timeline_mode()
self.clear_status()
# Main loop has to be running
while not getattr(self, 'loop'):
pass
# update alarm
seconds = configuration.twitter['update_frequency']
self.loop.set_alarm_in(seconds, self.update_alarm)
def main_loop(self):
"""
Launch the main loop of the program.
"""
if not hasattr(self, 'loop'):
# Creating the main loop for the first time
self.input_handler = InputHandler(self)
self.loop = urwid.MainLoop(
self.ui,
configuration.palette,
handle_mouse=True,
unhandled_input=self.input_handler.handle,
input_filter=self.input_handler.filter_input)
# Authenticate API just before starting main loop
self.authenticate_api()
try:
self.loop.run()
except TweepError as message:
logging.exception(message)
self.error_message(_('API error: %s' % message))
# recover from API errors
self.main_loop()
except KeyboardInterrupt:
# treat Ctrl-C as Escape
self.input_handler.handle('esc')
self.main_loop()
def exit(self):
"""Exit the program."""
raise urwid.ExitMainLoop()
# -- Observer -------------------------------------------------------------
def update(self):
"""
From :class:`~turses.meta.Observer`, gets called when the observed
subjects change.
"""
if self.is_in_info_mode():
self.timeline_mode()
self.draw_timelines()
# -- Callbacks ------------------------------------------------------------
def api_init_error(self):
# TODO retry
self.error_message(_('Couldn\'t initialize API'))
def update_alarm(self, *args, **kwargs):
self.update_all_timelines()
seconds = configuration.twitter['update_frequency']
self.loop.set_alarm_in(seconds, self.update_alarm)
# -- Modes ----------------------------------------------------------------
def timeline_mode(self):
"""
Activates the Timeline mode if there are Timelines.
If not, shows program info.
"""
if self.is_in_user_info_mode():
self.ui.hide_user_info()
if self.is_in_timeline_mode():
return
if self.is_in_help_mode():
self.clear_status()
if self.timelines.has_timelines():
self.mode = self.TIMELINE_MODE
self.draw_timelines()
else:
self.mode = self.INFO_MODE
self.ui.show_info()
self.redraw_screen()
def is_in_timeline_mode(self):
return self.mode == self.TIMELINE_MODE
def info_mode(self):
self.mode = self.INFO_MODE
self.ui.show_info()
self.redraw_screen()
def is_in_info_mode(self):
return self.mode == self.INFO_MODE
def help_mode(self):
"""Activate Help mode."""
if self.is_in_help_mode():
return
self.mode = self.HELP_MODE
self.ui.show_help()
self.redraw_screen()
def is_in_help_mode(self):
return self.mode == self.HELP_MODE
def editor_mode(self, editor):
"""Activate editor mode."""
self.editor = editor
self.mode = self.EDITOR_MODE
def is_in_editor_mode(self):
return self.mode == self.EDITOR_MODE
def user_info_mode(self, user):
"""Activate user info mode."""
self._user_info = user
self.mode = self.USER_INFO_MODE
def is_in_user_info_mode(self):
return self.mode == self.USER_INFO_MODE
# -- Timelines ------------------------------------------------------------
@wrap_exceptions
def append_timeline(self,
name,
update_function,
update_args=None,
update_kwargs=None):
"""
Given a name, function to update a timeline and optionally
arguments to the update function, it creates the timeline and
appends it to `timelines`.
"""
timeline = Timeline(name=name,
update_function=update_function,
update_function_args=update_args,
update_function_kwargs=update_kwargs)
timeline.update()
timeline.activate_first()
self.timelines.append_timeline(timeline)
def append_home_timeline(self):
timeline_fetched = partial(self.info_message,
_('Home timeline fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch home timeline'))
self.append_timeline(
name=_('tweets'),
update_function=self.api.get_home_timeline,
on_error=timeline_not_fetched,
on_success=timeline_fetched,
)
def append_user_timeline(self, username):
success_message = _('@%s\'s tweets fetched' % username)
timeline_fetched = partial(self.info_message, success_message)
error_message = _('Failed to fetch @%s\'s tweets' % username)
timeline_not_fetched = partial(self.error_message, error_message)
self.append_timeline(
name='@%s' % username,
update_function=self.api.get_user_timeline,
update_kwargs={'screen_name': username},
on_error=timeline_not_fetched,
on_success=timeline_fetched,
)
def append_own_tweets_timeline(self):
timeline_fetched = partial(self.info_message, _('Your tweets fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch your tweets'))
if not hasattr(self, 'user'):
self.user = self.api.verify_credentials()
self.append_timeline(
name='@%s' % self.user.screen_name,
update_function=self.api.get_own_timeline,
on_error=timeline_not_fetched,
on_success=timeline_fetched,
)
def append_mentions_timeline(self):
timeline_fetched = partial(self.info_message, _('Mentions fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch mentions'))
self.append_timeline(
name=_('mentions'),
update_function=self.api.get_mentions,
on_error=timeline_not_fetched,
on_success=timeline_fetched,
)
def append_favorites_timeline(self):
timeline_fetched = partial(self.info_message, _('Favorites fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch favorites'))
self.append_timeline(
name=_('favorites'),
update_function=self.api.get_favorites,
on_error=timeline_not_fetched,
on_success=timeline_fetched,
)
def append_direct_messages_timeline(self):
timeline_fetched = partial(self.info_message, _('Messages fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch messages'))
self.append_timeline(
name=_('messages'),
update_function=self.api.get_direct_messages,
on_error=timeline_not_fetched,
on_success=timeline_fetched,
)
@has_active_status
def append_thread_timeline(self):
status = self.timelines.active_status
timeline_fetched = partial(self.info_message, _('Thread fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch thread'))
if is_DM(status):
participants = [
status.sender_screen_name, status.recipient_screen_name
]
name = _('DM thread: %s' % ', '.join(participants))
update_function = self.api.get_message_thread
else:
participants = status.mentioned_usernames
author = status.authors_username
if author not in participants:
participants.insert(0, author)
name = _('thread: %s' % ', '.join(participants))
update_function = self.api.get_thread
self.append_timeline(name=name,
update_function=update_function,
update_args=status,
on_error=timeline_not_fetched,
on_success=timeline_fetched)
@async_thread
def append_search_timeline(self, query):
text = query.strip()
if not is_valid_search_text(text):
self.error_message(_('Invalid search'))
return
else:
self.info_message(_('Creating search timeline for "%s"' % text))
success_message = _('Search timeline for "%s" created' % text)
timeline_created = partial(self.info_message, success_message)
error_message = _('Error creating search timeline for "%s"' % text)
timeline_not_created = partial(self.info_message, error_message)
self.append_timeline(name=_('Search: %s' % text),
update_function=self.api.search,
update_args=text,
on_error=timeline_not_created,
on_success=timeline_created)
@async_thread
def append_retweets_of_me_timeline(self):
success_message = _('Your retweeted tweet timeline created')
timeline_created = partial(self.info_message, success_message)
error_message = _('Error creating timeline for your retweeted tweets')
timeline_not_created = partial(self.info_message, error_message)
self.append_timeline(name=_('Retweets of %s' % self.user.screen_name),
update_function=self.api.get_retweets_of_me,
on_error=timeline_not_created,
on_success=timeline_created)
@async_thread
def update_all_timelines(self):
for timeline in self.timelines:
timeline.update()
self.draw_timelines()
self.info_message(_('%s updated' % timeline.name))
self.redraw_screen()
self.clear_status()
# -- Timeline mode --------------------------------------------------------
def draw_timelines(self):
if not self.is_in_timeline_mode():
return
if self.timelines.has_timelines():
self.update_header()
# draw visible timelines
visible_timelines = self.timelines.visible_timelines
self.ui.draw_timelines(visible_timelines)
# focus active timeline
active_timeline = self.timelines.active
active_pos = self.timelines.active_index_relative_to_visible
# focus active status (if any)
if active_timeline.active_index >= 0:
self.ui.focus_timeline(active_pos)
self.ui.focus_status(active_timeline.active_index)
else:
self.ui.clear_header()
def update_header(self):
template = configuration.styles['tab_template']
name_and_unread = [(tl.name, tl.unread_count) for tl in self.timelines]
tabs = [
template.format(timeline_name=name, unread=unread)
for (name, unread) in name_and_unread
]
self.ui.set_tab_names(tabs)
# highlight the active
active_index = self.timelines.active_index
self.ui.activate_tab(active_index)
# colorize the visible tabs
visible_indexes = self.timelines.visible
self.ui.highlight_tabs(visible_indexes)
def mark_all_as_read(self):
"""Mark all statuses in active timeline as read."""
active_timeline = self.timelines.active
for tweet in active_timeline:
tweet.read = True
self.update_header()
@async_thread
def update_active_timeline(self):
"""Update the active timeline and draw the timeline buffers."""
if self.timelines.has_timelines():
active_timeline = self.timelines.active
try:
newest = active_timeline[0]
except IndexError:
return
active_timeline.update(since_id=newest.id)
if self.is_in_timeline_mode():
self.draw_timelines()
self.info_message('%s updated' % active_timeline.name)
@async_thread
def update_active_timeline_with_newer_statuses(self):
"""
Updates the active timeline with newer tweets than the active.
"""
active_timeline = self.timelines.active
active_status = active_timeline.active
if active_status:
active_timeline.update(since_id=active_status.id)
@async_thread
def update_active_timeline_with_older_statuses(self):
"""
Updates the active timeline with older tweets than the active.
"""
active_timeline = self.timelines.active
active_status = active_timeline.active
if active_status:
active_timeline.update(max_id=active_status.id)
# Center focus in order to make the fetched tweets visible
self.draw_timelines()
self.ui.center_focus()
self.redraw_screen()
@has_timelines
def previous_timeline(self):
self.timelines.activate_previous()
@has_timelines
def next_timeline(self):
self.timelines.activate_next()
@has_timelines
def shift_buffer_left(self):
self.timelines.shift_active_previous()
@has_timelines
def shift_buffer_right(self):
self.timelines.shift_active_next()
@has_timelines
def shift_buffer_beggining(self):
self.timelines.shift_active_beggining()
@has_timelines
def shift_buffer_end(self):
self.timelines.shift_active_end()
@has_timelines
def expand_buffer_left(self):
self.timelines.expand_visible_previous()
@has_timelines
def expand_buffer_right(self):
self.timelines.expand_visible_next()
@has_timelines
def shrink_buffer_left(self):
self.timelines.shrink_visible_beggining()
@has_timelines
def shrink_buffer_right(self):
self.timelines.shrink_visible_end()
@has_timelines
def activate_first_buffer(self):
self.timelines.activate_first()
@has_timelines
def activate_last_buffer(self):
self.timelines.activate_last()
def delete_buffer(self):
self.timelines.delete_active_timeline()
if not self.timelines.has_timelines():
self.info_mode()
# -- Motion ---------------------------------------------------------------
def scroll_up(self):
self.ui.focus_previous()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
# update with newer tweets when scrolling down being at the bottom
if active_timeline.active_index == 0:
self.update_active_timeline_with_newer_statuses()
active_timeline.activate_previous()
self.draw_timelines()
def scroll_down(self):
self.ui.focus_next()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
# update with older tweets when scrolling down being at the bottom
if active_timeline.active_index == len(active_timeline) - 1:
self.update_active_timeline_with_older_statuses()
active_timeline.activate_next()
self.draw_timelines()
def scroll_top(self):
self.ui.focus_first()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
active_timeline.activate_first()
self.draw_timelines()
def scroll_bottom(self):
self.ui.focus_last()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
active_timeline.activate_last()
self.draw_timelines()
# -- Footer ---------------------------------------------------------------
def error_message(self, message):
self.ui.status_error_message(message)
self.redraw_screen()
def info_message(self, message):
self.ui.status_info_message(message)
self.redraw_screen()
def clear_status(self):
"""Clear the status bar."""
self.ui.clear_status()
self.redraw_screen()
# -- UI -------------------------------------------------------------------
def redraw_screen(self):
if hasattr(self, "loop"):
try:
self.loop.draw_screen()
except AssertionError as message:
logging.critical(message)
# -- Editor ---------------------------------------------------------------
def forward_to_editor(self, key):
if self.editor:
# FIXME: `keypress` function needs a `size` parameter
size = 20,
self.editor.keypress(size, key)
@text_from_editor
def tweet_handler(self, text):
"""Handle the post as a tweet of the given `text`."""
self.info_message(_('Sending tweet'))
if not is_valid_status_text(text):
# tweet was explicitly cancelled or empty text
self.info_message(_('Tweet canceled'))
return
tweet_sent = partial(self.info_message, _('Tweet sent'))
tweet_not_sent = partial(self.error_message, _('Tweet not sent'))
# API call
self.api.update(
text=text,
on_success=tweet_sent,
on_error=tweet_not_sent,
)
@text_from_editor
@has_active_status
def reply_handler(self, text):
"""Handle the post as a tweet of the given `text` replying to the
current status."""
status = self.timelines.active_status
self.info_message(_('Sending reply'))
if not is_valid_status_text(text):
# reply was explicitly cancelled or empty text
self.info_message(_('Reply canceled'))
return
reply_sent = partial(self.info_message, _('Reply sent'))
reply_not_sent = partial(self.error_message, _('Reply not sent'))
# API call
self.api.reply(
status=status,
text=text,
on_success=reply_sent,
on_error=reply_not_sent,
)
@text_from_editor
def direct_message_handler(self, username, text):
"""Handle the post as a DM of the given `text` to `username`."""
self.info_message(_('Sending DM'))
if not is_valid_status_text(text):
# <Esc> was pressed
self.info_message(_('DM canceled'))
return
dm_info = _('Direct Message to @%s sent' % username)
dm_sent = partial(self.info_message, dm_info)
dm_error = _('Failed to send message to @%s' % username)
dm_not_sent = partial(self.error_message, dm_error)
self.api.direct_message(
screen_name=username,
text=text,
on_success=dm_sent,
on_error=dm_not_sent,
)
@text_from_editor
def follow_user_handler(self, username):
"""
Handles following the user given in `username`.
"""
if username is None:
self.info_message(_('Search cancelled'))
return
username = sanitize_username(username)
if username == self.user.screen_name:
self.error_message(_('You can\'t follow yourself'))
return
# TODO make sure that the user EXISTS and THEN follow
if not is_username(username):
self.info_message(_('Invalid username'))
return
else:
self.info_message(_('Following @%s' % username))
success_message = _('You are now following @%s' % username)
follow_done = partial(self.info_message, success_message)
error_template = _('We can not ensure that you are following @%s')
error_message = error_template % username
follow_error = partial(self.error_message, error_message)
self.api.create_friendship(screen_name=username,
on_error=follow_error,
on_success=follow_done)
@text_from_editor
def unfollow_user_handler(self, username):
"""
Handles unfollowing the user given in `username`.
"""
if username is None:
self.info_message(_('Search cancelled'))
return
username = sanitize_username(username)
if username == self.user.screen_name:
self.error_message(_('That doesn\'t make any sense'))
return
# TODO make sure that the user EXISTS and THEN follow
if not is_username(username):
self.info_message(_('Invalid username'))
return
else:
self.info_message(_('Unfollowing @%s' % username))
success_message = _('You are no longer following %s' % username)
unfollow_done = partial(self.info_message, success_message)
error_template = _('We can not ensure that you are not following %s')
error_message = error_template % username
unfollow_error = partial(self.error_message, error_message)
self.api.destroy_friendship(screen_name=username,
on_error=unfollow_error,
on_success=unfollow_done)
@text_from_editor
def search_handler(self, text):
"""
Handles creating a timeline tracking the search term given in
`text`.
"""
if text is None:
self.info_message(_('Search cancelled'))
return
self.append_search_timeline(text)
@text_from_editor
def search_user_handler(self, username):
"""
Handles creating a timeline tracking the searched user's tweets.
"""
if username is None:
self.info_message(_('Search cancelled'))
return
# TODO make sure that the user EXISTS and THEN fetch its tweets
username = sanitize_username(username)
if not is_username(username):
self.info_message(_('Invalid username'))
return
else:
self.info_message(_('Fetching latest tweets from @%s' % username))
success_message = _('@%s\'s timeline created' % username)
timeline_created = partial(self.info_message, success_message)
error_message = _('Unable to create @%s\'s timeline' % username)
timeline_not_created = partial(self.error_message, error_message)
self.append_timeline(name='@%s' % username,
update_function=self.api.get_user_timeline,
update_args=username,
on_success=timeline_created,
on_error=timeline_not_created)
# -- Twitter --------------------------------------------------------------
def search(self, text=None):
text = '' if text is None else text
handler = self.search_handler
editor = self.ui.show_text_editor(prompt='Search',
content=text,
done_signal_handler=handler)
self.editor_mode(editor)
def search_user(self):
prompt = _('Search user (no need to prepend it with "@"')
handler = self.search_user_handler
editor = self.ui.show_text_editor(prompt=prompt,
content='',
done_signal_handler=handler)
self.editor_mode(editor)
@has_active_status
def search_hashtags(self):
status = self.timelines.active_status
hashtags = ' '.join(status.hashtags)
self.search_handler(text=hashtags)
@has_active_status
def focused_status_author_timeline(self):
status = self.timelines.active_status
author = status.authors_username
self.append_user_timeline(author)
def tweet(self, prompt=_('Tweet'), content='', cursor_position=None):
handler = self.tweet_handler
editor = self.ui.show_tweet_editor(prompt=prompt,
content=content,
done_signal_handler=handler,
cursor_position=cursor_position)
self.editor_mode(editor)
@has_active_status
def retweet(self):
status = self.timelines.active_status
if is_DM(status):
self.error_message(_('You can\'t retweet direct messages'))
return
self._retweet(status)
def _retweet(self, status):
retweet_posted = partial(self.info_message, _('Retweet posted'))
retweet_post_failed = partial(self.error_message,
_('Failed to post retweet'))
self.api.retweet(
on_error=retweet_post_failed,
on_success=retweet_posted,
status=status,
)
@has_active_status
def manual_retweet(self):
status = self.timelines.active_status
rt_text = ''.join([' RT @%s: ' % status.authors_username, status.text])
if is_valid_status_text(rt_text):
self.tweet(content=rt_text, cursor_position=0)
else:
self.error_message(_('Tweet too long for manual retweet'))
@has_active_status
def retweet_and_favorite(self):
status = self.timelines.active_status
if is_DM(status):
self.error_message(
_('You can\'t retweet or favorite direct messages'))
return
self._retweet(status)
self._favorite(status)
@has_active_status
def reply(self):
status = self.timelines.active_status
if is_DM(status):
self.direct_message()
return
author = status.authors_username
mentioned = status.mentioned_for_reply
try:
mentioned.remove('@%s' % self.user.screen_name)
except ValueError:
pass
handler = self.reply_handler
editor = self.ui.show_tweet_editor(prompt=_('Reply to %s' % author),
content=' '.join(mentioned),
done_signal_handler=handler)
self.editor_mode(editor)
@has_active_status
def direct_message(self):
status = self.timelines.active_status
recipient = status.dm_recipients_username(self.user.screen_name)
if recipient:
handler = self.direct_message_handler
editor = self.ui.show_dm_editor(prompt=_('DM to %s' % recipient),
content='',
recipient=recipient,
done_signal_handler=handler)
self.editor_mode(editor)
else:
self.error_message(_('What do you mean?'))
@has_active_status
def tweet_with_hashtags(self):
status = self.timelines.active_status
hashtags = ' '.join(status.hashtags)
if hashtags:
handler = self.tweet_handler
content = ''.join([' ', hashtags])
editor = self.ui.show_tweet_editor(prompt=_('%s' % hashtags),
content=content,
done_signal_handler=handler,
cursor_position=0)
self.editor_mode(editor)
@has_active_status
def delete_tweet(self):
status = self.timelines.active_status
if is_DM(status):
self.delete_dm()
return
author = status.authors_username
if (author != self.user.screen_name
and status.user != self.user.screen_name):
self.error_message(_('You can only delete your own tweets'))
return
status_deleted = partial(self.info_message, _('Tweet deleted'))
status_not_deleted = partial(self.error_message,
_('Failed to delete tweet'))
self.api.destroy_status(status=status,
on_error=status_not_deleted,
on_success=status_deleted)
def delete_dm(self):
dm = self.timelines.active_status
if dm is None:
return
if dm.sender_screen_name != self.user.screen_name:
self.error_message(_('You can only delete messages sent by you'))
return
dm_deleted = partial(self.info_message, _('Message deleted'))
dm_not_deleted = partial(self.error_message,
_('Failed to delete message'))
self.api.destroy_direct_message(status=dm,
on_error=dm_not_deleted,
on_success=dm_deleted)
@has_active_status
def follow_selected(self):
status = self.timelines.active_status
username = status.authors_username
if username == self.user.screen_name:
self.error_message(_('You can\'t follow yourself'))
return
success_message = _('You are now following @%s' % username)
follow_done = partial(self.info_message, success_message)
error_template = _('We can not ensure that you are following @%s')
error_message = error_template % username
follow_error = partial(self.error_message, error_message)
self.api.create_friendship(screen_name=username,
on_error=follow_error,
on_success=follow_done)
def follow_user(self,
prompt=_('Follow user (no need to prepend it with "@"'),
content='',
cursor_position=None):
handler = self.follow_user_handler
editor = self.ui.show_text_editor(prompt=prompt,
content=content,
done_signal_handler=handler,
cursor_position=cursor_position)
self.editor_mode(editor)
def unfollow_user(self,
prompt=_('Unfollow user (no need to prepend it with'
' "@"'),
content='',
cursor_position=None):
handler = self.unfollow_user_handler
editor = self.ui.show_text_editor(prompt=prompt,
content=content,
done_signal_handler=handler,
cursor_position=cursor_position)
self.editor_mode(editor)
@has_active_status
def unfollow_selected(self):
status = self.timelines.active_status
username = status.authors_username
if username == self.user.screen_name:
self.error_message(_('That doesn\'t make any sense'))
return
success_message = _('You are no longer following %s' % username)
unfollow_done = partial(self.info_message, success_message)
error_template = _('We can not ensure that you are not following %s')
error_message = error_template % username
unfollow_error = partial(self.error_message, error_message)
self.api.destroy_friendship(screen_name=username,
on_error=unfollow_error,
on_success=unfollow_done)
@has_active_status
def favorite(self):
status = self.timelines.active_status
self._favorite(status)
def _favorite(self, status):
favorite_error = partial(self.error_message,
_('Failed to mark tweet as favorite'))
favorite_done = partial(self.info_message,
_('Tweet marked as favorite'))
self.api.create_favorite(
on_error=favorite_error,
on_success=favorite_done,
status=status,
)
@has_active_status
def unfavorite(self):
status = self.timelines.active_status
unfavorite_error = partial(self.error_message,
_('Failed to remove tweet from favorites'))
unfavorite_done = partial(self.info_message,
_('Tweet removed from favorites'))
self.api.destroy_favorite(
on_error=unfavorite_error,
on_success=unfavorite_done,
status=status,
)
@has_active_status
def user_info(self):
status = self.timelines.active_status
username = status.authors_username
user = self.api.get_user(username)
last_statuses = self.api.get_user_timeline(username)
self.ui.show_user_info(user, last_statuses)
self.user_info_mode(user)
# - Configuration ---------------------------------------------------------
def reload_configuration(self):
configuration.reload()
self.redraw_screen()
self.info_message(_('Configuration reloaded'))
# - Browser ---------------------------------------------------------------
@has_active_status
def open_urls(self):
"""
Open the URLs contained on the focused tweets in a browser.
"""
status = self.timelines.active_status
urls = get_urls(status.text)
if not urls:
self.info_message(_('No URLs found on this tweet'))
return
self.open_urls_in_browser(urls)
@has_active_status
def open_status_url(self):
"""
Open the focused tweet in a browser.
"""
status = self.timelines.active_status
if is_DM(status):
message = _('You only can open regular statuses in a browser')
self.info_message(message)
return
self.open_urls_in_browser([status.url])
def open_urls_in_browser(self, urls):
"""
Open `urls` in $BROWSER if the environment variable is set.
"""
# The webbrowser module respects the BROWSER environment variable,
# so if that's set, it'll use it, otherwise it will try to find
# something sensible
try:
# Firefox, w3m, etc can't handle multiple URLs at command line, so
# split the URLs up for them
for url in urls:
webbrowser.open(url)
except Exception as message:
logging.exception(message)
self.error_message(_('Unable to launch the browser'))
class Controller(Observer):
"""
The :class:`Controller`.
"""
# Modes
INFO_MODE = 0
TIMELINE_MODE = 1
HELP_MODE = 2
EDITOR_MODE = 3
USER_INFO_MODE = 4
# -- Initialization -------------------------------------------------------
def __init__(self, ui, api, timelines):
# View
self.ui = ui
self.api = api
self.timelines = timelines
# Load session
self.session = Session(self.api)
self.session.populate(self.timelines)
self.editor = None
# Default Mode
self.mode = self.INFO_MODE
# Subscribe to model updates
self.timelines.subscribe(self)
signal.signal(signal.SIGCONT, self.handle_sigcont)
def start(self):
self.main_loop()
def handle_sigcont(self, signum, stack_frame):
self.loop.screen.stop()
self.loop.screen.start()
self.redraw_screen()
def authenticate_api(self):
self.info_message(_('Authenticating API'))
self.api.init_api(on_error=self.api_init_error,
on_success=self.init_timelines,)
@async
def init_timelines(self):
# API has to be authenticated
while (not self.api.is_authenticated):
pass
# fetch the authenticated user
self.user = self.api.verify_credentials()
# initialize the timelines
self.info_message(_('Fetching timelines'))
for timeline in self.timelines:
timeline.update()
timeline.activate_first()
self.timeline_mode()
self.clear_status()
# Main loop has to be running
while not getattr(self, 'loop'):
pass
# update alarm
seconds = configuration.twitter['update_frequency']
self.loop.set_alarm_in(seconds, self.update_alarm)
def main_loop(self):
"""
Launch the main loop of the program.
"""
if not hasattr(self, 'loop'):
# Creating the main loop for the first time
self.input_handler = InputHandler(self)
self.loop = urwid.MainLoop(
self.ui,
configuration.palette,
handle_mouse=True,
unhandled_input=self.input_handler.handle,
input_filter=self.input_handler.filter_input)
# Authenticate API just before starting main loop
self.authenticate_api()
try:
self.loop.run()
except TweepError as message:
logging.exception(message)
self.error_message(_('API error: %s' % message))
# recover from API errors
self.main_loop()
except KeyboardInterrupt:
# treat Ctrl-C as Escape
self.input_handler.handle('esc')
self.main_loop()
def exit(self):
"""Exit the program."""
raise urwid.ExitMainLoop()
# -- Observer -------------------------------------------------------------
def update(self):
"""
From :class:`~turses.meta.Observer`, gets called when the observed
subjects change.
"""
if self.is_in_info_mode():
self.timeline_mode()
self.draw_timelines()
# -- Callbacks ------------------------------------------------------------
def api_init_error(self):
# TODO retry
self.error_message(_('Couldn\'t initialize API'))
def update_alarm(self, *args, **kwargs):
self.update_all_timelines()
seconds = configuration.twitter['update_frequency']
self.loop.set_alarm_in(seconds, self.update_alarm)
# -- Modes ----------------------------------------------------------------
def timeline_mode(self):
"""
Activates the Timeline mode if there are Timelines.
If not, shows program info.
"""
if self.is_in_user_info_mode():
self.ui.hide_user_info()
if self.is_in_timeline_mode():
return
if self.is_in_help_mode():
self.clear_status()
if self.timelines.has_timelines():
self.mode = self.TIMELINE_MODE
self.draw_timelines()
else:
self.mode = self.INFO_MODE
self.ui.show_info()
self.redraw_screen()
def is_in_timeline_mode(self):
return self.mode == self.TIMELINE_MODE
def info_mode(self):
self.mode = self.INFO_MODE
self.ui.show_info()
self.redraw_screen()
def is_in_info_mode(self):
return self.mode == self.INFO_MODE
def help_mode(self):
"""Activate Help mode."""
if self.is_in_help_mode():
return
self.mode = self.HELP_MODE
self.ui.show_help()
self.redraw_screen()
def is_in_help_mode(self):
return self.mode == self.HELP_MODE
def editor_mode(self, editor):
"""Activate editor mode."""
self.editor = editor
self.mode = self.EDITOR_MODE
def is_in_editor_mode(self):
return self.mode == self.EDITOR_MODE
def user_info_mode(self, user):
"""Activate user info mode."""
self._user_info = user
self.mode = self.USER_INFO_MODE
def is_in_user_info_mode(self):
return self.mode == self.USER_INFO_MODE
# -- Timelines ------------------------------------------------------------
@wrap_exceptions
def append_timeline(self,
name,
update_function,
update_args=None,
update_kwargs=None):
"""
Given a name, function to update a timeline and optionally
arguments to the update function, it creates the timeline and
appends it to `timelines`.
"""
timeline = Timeline(name=name,
update_function=update_function,
update_function_args=update_args,
update_function_kwargs=update_kwargs)
timeline.update()
timeline.activate_first()
self.timelines.append_timeline(timeline)
def append_home_timeline(self):
timeline_fetched = partial(self.info_message,
_('Home timeline fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch home timeline'))
self.append_timeline(name=_('tweets'),
update_function=self.api.get_home_timeline,
on_error=timeline_not_fetched,
on_success=timeline_fetched,)
def append_user_timeline(self, username):
success_message = _('@%s\'s tweets fetched' % username)
timeline_fetched = partial(self.info_message,
success_message)
error_message = _('Failed to fetch @%s\'s tweets' % username)
timeline_not_fetched = partial(self.error_message,
error_message)
self.append_timeline(name='@%s' % username,
update_function=self.api.get_user_timeline,
update_kwargs={'screen_name': username},
on_error=timeline_not_fetched,
on_success=timeline_fetched,)
def append_own_tweets_timeline(self):
timeline_fetched = partial(self.info_message,
_('Your tweets fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch your tweets'))
if not hasattr(self, 'user'):
self.user = self.api.verify_credentials()
self.append_timeline(name='@%s' % self.user.screen_name,
update_function=self.api.get_own_timeline,
on_error=timeline_not_fetched,
on_success=timeline_fetched,)
def append_mentions_timeline(self):
timeline_fetched = partial(self.info_message,
_('Mentions fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch mentions'))
self.append_timeline(name=_('mentions'),
update_function=self.api.get_mentions,
on_error=timeline_not_fetched,
on_success=timeline_fetched,)
def append_favorites_timeline(self):
timeline_fetched = partial(self.info_message,
_('Favorites fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch favorites'))
self.append_timeline(name=_('favorites'),
update_function=self.api.get_favorites,
on_error=timeline_not_fetched,
on_success=timeline_fetched,)
def append_direct_messages_timeline(self):
timeline_fetched = partial(self.info_message,
_('Messages fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch messages'))
self.append_timeline(name=_('messages'),
update_function=self.api.get_direct_messages,
on_error=timeline_not_fetched,
on_success=timeline_fetched,)
@has_active_status
def append_thread_timeline(self):
status = self.timelines.active_status
timeline_fetched = partial(self.info_message,
_('Thread fetched'))
timeline_not_fetched = partial(self.error_message,
_('Failed to fetch thread'))
if is_DM(status):
participants = [status.sender_screen_name,
status.recipient_screen_name]
name = _('DM thread: %s' % ', '.join(participants))
update_function = self.api.get_message_thread
else:
participants = status.mentioned_usernames
author = status.authors_username
if author not in participants:
participants.insert(0, author)
name = _('thread: %s' % ', '.join(participants))
update_function = self.api.get_thread
self.append_timeline(name=name,
update_function=update_function,
update_args=status,
on_error=timeline_not_fetched,
on_success=timeline_fetched)
@async
def append_search_timeline(self, query):
text = query.strip()
if not is_valid_search_text(text):
self.error_message(_('Invalid search'))
return
else:
self.info_message(_('Creating search timeline for "%s"' % text))
success_message = _('Search timeline for "%s" created' % text)
timeline_created = partial(self.info_message,
success_message)
error_message = _('Error creating search timeline for "%s"' % text)
timeline_not_created = partial(self.info_message,
error_message)
self.append_timeline(name=_('Search: %s' % text),
update_function=self.api.search,
update_args=text,
on_error=timeline_not_created,
on_success=timeline_created)
@async
def append_retweets_of_me_timeline(self):
success_message = _('Your retweeted tweet timeline created')
timeline_created = partial(self.info_message,
success_message)
error_message = _('Error creating timeline for your retweeted tweets')
timeline_not_created = partial(self.info_message,
error_message)
self.append_timeline(name=_('Retweets of %s' % self.user.screen_name),
update_function=self.api.get_retweets_of_me,
on_error=timeline_not_created,
on_success=timeline_created)
@async
def update_all_timelines(self):
for timeline in self.timelines:
timeline.update()
self.draw_timelines()
self.info_message(_('%s updated' % timeline.name))
self.redraw_screen()
self.clear_status()
# -- Timeline mode --------------------------------------------------------
def draw_timelines(self):
if not self.is_in_timeline_mode():
return
if self.timelines.has_timelines():
self.update_header()
# draw visible timelines
visible_timelines = self.timelines.visible_timelines
self.ui.draw_timelines(visible_timelines)
# focus active timeline
active_timeline = self.timelines.active
active_pos = self.timelines.active_index_relative_to_visible
# focus active status (if any)
if active_timeline.active_index >= 0:
self.ui.focus_timeline(active_pos)
self.ui.focus_status(active_timeline.active_index)
else:
self.ui.clear_header()
def update_header(self):
template = configuration.styles['tab_template']
name_and_unread = [(tl.name, tl.unread_count) for tl in self.timelines]
tabs = [template.format(timeline_name=name, unread=unread)
for (name, unread) in name_and_unread]
self.ui.set_tab_names(tabs)
# highlight the active
active_index = self.timelines.active_index
self.ui.activate_tab(active_index)
# colorize the visible tabs
visible_indexes = self.timelines.visible
self.ui.highlight_tabs(visible_indexes)
def mark_all_as_read(self):
"""Mark all statuses in active timeline as read."""
active_timeline = self.timelines.active
for tweet in active_timeline:
tweet.read = True
self.update_header()
@async
def update_active_timeline(self):
"""Update the active timeline and draw the timeline buffers."""
if self.timelines.has_timelines():
active_timeline = self.timelines.active
try:
newest = active_timeline[0]
except IndexError:
return
active_timeline.update(since_id=newest.id)
if self.is_in_timeline_mode():
self.draw_timelines()
self.info_message('%s updated' % active_timeline.name)
@async
def update_active_timeline_with_newer_statuses(self):
"""
Updates the active timeline with newer tweets than the active.
"""
active_timeline = self.timelines.active
active_status = active_timeline.active
if active_status:
active_timeline.update(since_id=active_status.id)
@async
def update_active_timeline_with_older_statuses(self):
"""
Updates the active timeline with older tweets than the active.
"""
active_timeline = self.timelines.active
active_status = active_timeline.active
if active_status:
active_timeline.update(max_id=active_status.id)
# Center focus in order to make the fetched tweets visible
self.draw_timelines()
self.ui.center_focus()
self.redraw_screen()
@has_timelines
def previous_timeline(self):
self.timelines.activate_previous()
@has_timelines
def next_timeline(self):
self.timelines.activate_next()
@has_timelines
def shift_buffer_left(self):
self.timelines.shift_active_previous()
@has_timelines
def shift_buffer_right(self):
self.timelines.shift_active_next()
@has_timelines
def shift_buffer_beggining(self):
self.timelines.shift_active_beggining()
@has_timelines
def shift_buffer_end(self):
self.timelines.shift_active_end()
@has_timelines
def expand_buffer_left(self):
self.timelines.expand_visible_previous()
@has_timelines
def expand_buffer_right(self):
self.timelines.expand_visible_next()
@has_timelines
def shrink_buffer_left(self):
self.timelines.shrink_visible_beggining()
@has_timelines
def shrink_buffer_right(self):
self.timelines.shrink_visible_end()
@has_timelines
def activate_first_buffer(self):
self.timelines.activate_first()
@has_timelines
def activate_last_buffer(self):
self.timelines.activate_last()
def delete_buffer(self):
self.timelines.delete_active_timeline()
if not self.timelines.has_timelines():
self.info_mode()
# -- Motion ---------------------------------------------------------------
def scroll_up(self):
self.ui.focus_previous()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
# update with newer tweets when scrolling down being at the bottom
if active_timeline.active_index == 0:
self.update_active_timeline_with_newer_statuses()
active_timeline.activate_previous()
self.draw_timelines()
def scroll_down(self):
self.ui.focus_next()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
# update with older tweets when scrolling down being at the bottom
if active_timeline.active_index == len(active_timeline) - 1:
self.update_active_timeline_with_older_statuses()
active_timeline.activate_next()
self.draw_timelines()
def scroll_top(self):
self.ui.focus_first()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
active_timeline.activate_first()
self.draw_timelines()
def scroll_bottom(self):
self.ui.focus_last()
if self.is_in_timeline_mode():
active_timeline = self.timelines.active
active_timeline.activate_last()
self.draw_timelines()
# -- Footer ---------------------------------------------------------------
def error_message(self, message):
self.ui.status_error_message(message)
self.redraw_screen()
def info_message(self, message):
self.ui.status_info_message(message)
self.redraw_screen()
def clear_status(self):
"""Clear the status bar."""
self.ui.clear_status()
self.redraw_screen()
# -- UI -------------------------------------------------------------------
def redraw_screen(self):
if hasattr(self, "loop"):
try:
self.loop.draw_screen()
except AssertionError as message:
logging.critical(message)
# -- Editor ---------------------------------------------------------------
def forward_to_editor(self, key):
if self.editor:
# FIXME: `keypress` function needs a `size` parameter
size = 20,
self.editor.keypress(size, key)
@text_from_editor
def tweet_handler(self, text):
"""Handle the post as a tweet of the given `text`."""
self.info_message(_('Sending tweet'))
if not is_valid_status_text(text):
# tweet was explicitly cancelled or empty text
self.info_message(_('Tweet canceled'))
return
tweet_sent = partial(self.info_message, _('Tweet sent'))
tweet_not_sent = partial(self.error_message, _('Tweet not sent'))
# API call
self.api.update(text=text,
on_success=tweet_sent,
on_error=tweet_not_sent,)
@text_from_editor
@has_active_status
def reply_handler(self, text):
"""Handle the post as a tweet of the given `text` replying to the
current status."""
status = self.timelines.active_status
self.info_message(_('Sending reply'))
if not is_valid_status_text(text):
# reply was explicitly cancelled or empty text
self.info_message(_('Reply canceled'))
return
reply_sent = partial(self.info_message, _('Reply sent'))
reply_not_sent = partial(self.error_message, _('Reply not sent'))
# API call
self.api.reply(status=status,
text=text,
on_success=reply_sent,
on_error=reply_not_sent,)
@text_from_editor
def direct_message_handler(self, username, text):
"""Handle the post as a DM of the given `text` to `username`."""
self.info_message(_('Sending DM'))
if not is_valid_status_text(text):
# <Esc> was pressed
self.info_message(_('DM canceled'))
return
dm_info = _('Direct Message to @%s sent' % username)
dm_sent = partial(self.info_message, dm_info)
dm_error = _('Failed to send message to @%s' % username)
dm_not_sent = partial(self.error_message, dm_error)
self.api.direct_message(screen_name=username,
text=text,
on_success=dm_sent,
on_error=dm_not_sent,)
@text_from_editor
def follow_user_handler(self, username):
"""
Handles following the user given in `username`.
"""
if username is None:
self.info_message(_('Search cancelled'))
return
username = sanitize_username(username)
if username == self.user.screen_name:
self.error_message(_('You can\'t follow yourself'))
return
# TODO make sure that the user EXISTS and THEN follow
if not is_username(username):
self.info_message(_('Invalid username'))
return
else:
self.info_message(_('Following @%s' % username))
success_message = _('You are now following @%s' % username)
follow_done = partial(self.info_message,
success_message)
error_template = _('We can not ensure that you are following @%s')
error_message = error_template % username
follow_error = partial(self.error_message,
error_message)
self.api.create_friendship(screen_name=username,
on_error=follow_error,
on_success=follow_done)
@text_from_editor
def unfollow_user_handler(self, username):
"""
Handles unfollowing the user given in `username`.
"""
if username is None:
self.info_message(_('Search cancelled'))
return
username = sanitize_username(username)
if username == self.user.screen_name:
self.error_message(_('That doesn\'t make any sense'))
return
# TODO make sure that the user EXISTS and THEN follow
if not is_username(username):
self.info_message(_('Invalid username'))
return
else:
self.info_message(_('Unfollowing @%s' % username))
success_message = _('You are no longer following %s' % username)
unfollow_done = partial(self.info_message,
success_message)
error_template = _('We can not ensure that you are not following %s')
error_message = error_template % username
unfollow_error = partial(self.error_message,
error_message)
self.api.destroy_friendship(screen_name=username,
on_error=unfollow_error,
on_success=unfollow_done)
@text_from_editor
def search_handler(self, text):
"""
Handles creating a timeline tracking the search term given in
`text`.
"""
if text is None:
self.info_message(_('Search cancelled'))
return
self.append_search_timeline(text)
@text_from_editor
def search_user_handler(self, username):
"""
Handles creating a timeline tracking the searched user's tweets.
"""
if username is None:
self.info_message(_('Search cancelled'))
return
# TODO make sure that the user EXISTS and THEN fetch its tweets
username = sanitize_username(username)
if not is_username(username):
self.info_message(_('Invalid username'))
return
else:
self.info_message(_('Fetching latest tweets from @%s' % username))
success_message = _('@%s\'s timeline created' % username)
timeline_created = partial(self.info_message,
success_message)
error_message = _('Unable to create @%s\'s timeline' % username)
timeline_not_created = partial(self.error_message,
error_message)
self.append_timeline(name='@%s' % username,
update_function=self.api.get_user_timeline,
update_args=username,
on_success=timeline_created,
on_error=timeline_not_created)
# -- Twitter --------------------------------------------------------------
def search(self, text=None):
text = '' if text is None else text
handler = self.search_handler
editor = self.ui.show_text_editor(prompt='Search',
content=text,
done_signal_handler=handler)
self.editor_mode(editor)
def search_user(self):
prompt = _('Search user (no need to prepend it with "@"')
handler = self.search_user_handler
editor = self.ui.show_text_editor(prompt=prompt,
content='',
done_signal_handler=handler)
self.editor_mode(editor)
@has_active_status
def search_hashtags(self):
status = self.timelines.active_status
hashtags = ' '.join(status.hashtags)
self.search_handler(text=hashtags)
@has_active_status
def focused_status_author_timeline(self):
status = self.timelines.active_status
author = status.authors_username
self.append_user_timeline(author)
def tweet(self,
prompt=_('Tweet'),
content='',
cursor_position=None):
handler = self.tweet_handler
editor = self.ui.show_tweet_editor(prompt=prompt,
content=content,
done_signal_handler=handler,
cursor_position=cursor_position)
self.editor_mode(editor)
@has_active_status
def retweet(self):
status = self.timelines.active_status
if is_DM(status):
self.error_message(_('You can\'t retweet direct messages'))
return
self._retweet(status)
def _retweet(self, status):
retweet_posted = partial(self.info_message,
_('Retweet posted'))
retweet_post_failed = partial(self.error_message,
_('Failed to post retweet'))
self.api.retweet(on_error=retweet_post_failed,
on_success=retweet_posted,
status=status,)
@has_active_status
def manual_retweet(self):
status = self.timelines.active_status
rt_text = ''.join([' RT @%s: ' % status.authors_username,
status.text])
if is_valid_status_text(rt_text):
self.tweet(content=rt_text,
cursor_position=0)
else:
self.error_message(_('Tweet too long for manual retweet'))
@has_active_status
def retweet_and_favorite(self):
status = self.timelines.active_status
if is_DM(status):
self.error_message(
_('You can\'t retweet or favorite direct messages'))
return
self._retweet(status)
self._favorite(status)
@has_active_status
def reply(self):
status = self.timelines.active_status
if is_DM(status):
self.direct_message()
return
author = status.authors_username
mentioned = status.mentioned_for_reply
try:
mentioned.remove('@%s' % self.user.screen_name)
except ValueError:
pass
handler = self.reply_handler
editor = self.ui.show_tweet_editor(prompt=_('Reply to %s' % author),
content=' '.join(mentioned),
done_signal_handler=handler)
self.editor_mode(editor)
@has_active_status
def direct_message(self):
status = self.timelines.active_status
recipient = status.dm_recipients_username(self.user.screen_name)
if recipient:
handler = self.direct_message_handler
editor = self.ui.show_dm_editor(prompt=_('DM to %s' % recipient),
content='',
recipient=recipient,
done_signal_handler=handler)
self.editor_mode(editor)
else:
self.error_message(_('What do you mean?'))
@has_active_status
def tweet_with_hashtags(self):
status = self.timelines.active_status
hashtags = ' '.join(status.hashtags)
if hashtags:
handler = self.tweet_handler
content = ''.join([' ', hashtags])
editor = self.ui.show_tweet_editor(prompt=_('%s' % hashtags),
content=content,
done_signal_handler=handler,
cursor_position=0)
self.editor_mode(editor)
@has_active_status
def delete_tweet(self):
status = self.timelines.active_status
if is_DM(status):
self.delete_dm()
return
author = status.authors_username
if (author != self.user.screen_name
and status.user != self.user.screen_name):
self.error_message(_('You can only delete your own tweets'))
return
status_deleted = partial(self.info_message,
_('Tweet deleted'))
status_not_deleted = partial(self.error_message,
_('Failed to delete tweet'))
self.api.destroy_status(status=status,
on_error=status_not_deleted,
on_success=status_deleted)
def delete_dm(self):
dm = self.timelines.active_status
if dm is None:
return
if dm.sender_screen_name != self.user.screen_name:
self.error_message(_('You can only delete messages sent by you'))
return
dm_deleted = partial(self.info_message,
_('Message deleted'))
dm_not_deleted = partial(self.error_message,
_('Failed to delete message'))
self.api.destroy_direct_message(status=dm,
on_error=dm_not_deleted,
on_success=dm_deleted)
@has_active_status
def follow_selected(self):
status = self.timelines.active_status
username = status.authors_username
if username == self.user.screen_name:
self.error_message(_('You can\'t follow yourself'))
return
success_message = _('You are now following @%s' % username)
follow_done = partial(self.info_message,
success_message)
error_template = _('We can not ensure that you are following @%s')
error_message = error_template % username
follow_error = partial(self.error_message,
error_message)
self.api.create_friendship(screen_name=username,
on_error=follow_error,
on_success=follow_done)
def follow_user(self,
prompt=_('Follow user (no need to prepend it with "@"'),
content='',
cursor_position=None):
handler = self.follow_user_handler
editor = self.ui.show_text_editor(prompt=prompt,
content=content,
done_signal_handler=handler,
cursor_position=cursor_position)
self.editor_mode(editor)
def unfollow_user(self,
prompt=_('Unfollow user (no need to prepend it with'
' "@"'),
content='',
cursor_position=None):
handler = self.unfollow_user_handler
editor = self.ui.show_text_editor(prompt=prompt,
content=content,
done_signal_handler=handler,
cursor_position=cursor_position)
self.editor_mode(editor)
@has_active_status
def unfollow_selected(self):
status = self.timelines.active_status
username = status.authors_username
if username == self.user.screen_name:
self.error_message(_('That doesn\'t make any sense'))
return
success_message = _('You are no longer following %s' % username)
unfollow_done = partial(self.info_message,
success_message)
error_template = _('We can not ensure that you are not following %s')
error_message = error_template % username
unfollow_error = partial(self.error_message,
error_message)
self.api.destroy_friendship(screen_name=username,
on_error=unfollow_error,
on_success=unfollow_done)
@has_active_status
def favorite(self):
status = self.timelines.active_status
self._favorite(status)
def _favorite(self, status):
favorite_error = partial(self.error_message,
_('Failed to mark tweet as favorite'))
favorite_done = partial(self.info_message,
_('Tweet marked as favorite'))
self.api.create_favorite(on_error=favorite_error,
on_success=favorite_done,
status=status,)
@has_active_status
def unfavorite(self):
status = self.timelines.active_status
unfavorite_error = partial(self.error_message,
_('Failed to remove tweet from favorites'))
unfavorite_done = partial(self.info_message,
_('Tweet removed from favorites'))
self.api.destroy_favorite(on_error=unfavorite_error,
on_success=unfavorite_done,
status=status,)
@has_active_status
def user_info(self):
status = self.timelines.active_status
username = status.authors_username
user = self.api.get_user(username)
last_statuses = self.api.get_user_timeline(username)
self.ui.show_user_info(user, last_statuses)
self.user_info_mode(user)
# - Configuration ---------------------------------------------------------
def reload_configuration(self):
configuration.reload()
self.redraw_screen()
self.info_message(_('Configuration reloaded'))
# - Browser ---------------------------------------------------------------
@has_active_status
def open_urls(self):
"""
Open the URLs contained on the focused tweets in a browser.
"""
status = self.timelines.active_status
urls = get_urls(status.text)
if not urls:
self.info_message(_('No URLs found on this tweet'))
return
self.open_urls_in_browser(urls)
@has_active_status
def open_status_url(self):
"""
Open the focused tweet in a browser.
"""
status = self.timelines.active_status
if is_DM(status):
message = _('You only can open regular statuses in a browser')
self.info_message(message)
return
self.open_urls_in_browser([status.url])
def open_urls_in_browser(self, urls):
"""
Open `urls` in $BROWSER if the environment variable is set.
"""
# The webbrowser module respects the BROWSER environment variable,
# so if that's set, it'll use it, otherwise it will try to find
# something sensible
savout = os.dup(1)
os.close(1)
os.open(os.devnull, os.O_RDWR)
try:
# Firefox, w3m, etc can't handle multiple URLs at command line, so
# split the URLs up for them
for url in urls:
webbrowser.open(url)
except Exception as message:
logging.exception(message)
self.error_message(_('Unable to launch the browser'))
finally:
os.dup2(savout, 1)
os.close(savout)
class Controller(Observer):
"""
The :class:`Controller`.
"""
# Modes
INFO_MODE = 0
TIMELINE_MODE = 1
HELP_MODE = 2
EDITOR_MODE = 3
USER_INFO_MODE = 4
# -- Initialization -------------------------------------------------------
def __init__(self, ui, api, timelines):
# View
self.ui = ui
self.api = api
self.timelines = timelines
# Load session
self.session = Session(self.api)
self.session.populate(self.timelines)
self.editor = None
# Default Mode
self.mode = self.INFO_MODE
# Subscribe to model updates
self.timelines.subscribe(self)
def start(self):
self.main_loop()
def authenticate_api(self):
self.info_message(_('Authenticating API'))
self.api.init_api(
on_error=self.api_init_error,
on_success=self.init_timelines,
)
@async
def init_timelines(self):
# API has to be authenticated
while (not self.api.is_authenticated):
pass
# fetch the authenticated user
self.user = self.api.verify_credentials()
# initialize the timelines
self.info_message(_('Initializing timelines'))
for timeline in self.timelines:
timeline.update()
timeline.activate_first()
self.timeline_mode()
self.clear_status()
# Main loop has to be running
while not getattr(self, 'loop'):
pass
# update alarm
seconds = configuration.twitter['update_frequency']
self.loop.set_alarm_in(seconds, self.update_alarm)
def main_loop(self):
"""
Launch the main loop of the program.
"""
if not hasattr(self, 'loop'):
# Creating the main loop for the first time
self.key_handler = KeyHandler(self)
handler = self.key_handler.handle
self.loop = urwid.MainLoop(self.ui,
configuration.palette,
handle_mouse=False,
unhandled_input=handler)
# Authenticate API just before starting main loop
self.authenticate_api()
try:
self.loop.run()
except TweepError, message:
logging.exception(message)
self.error_message(_('API error: %s' % message))
# recover from API errors
self.main_loop()