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# Copyright (C) 2011-2018 Patrick Totzke <patricktotzke@gmail.com>
# This file is released under the GNU GPL, version 3 or a later revision.
# For further details see the COPYING file
import urwid
from notmuch2 import NotmuchError
from .buffer import Buffer
from ..settings.const import settings
from ..widgets.search import ThreadlineWidget
class IterWalker(urwid.ListWalker):
"""
urwid.ListWalker that reads next items from a generator and wraps them in
ThreadlineWidget widgets for displaying
"""
_pipe = None
_dbman = None
_iter_done = False
# list of the thread IDs
_tids = None
# a dictionary of threadline widgets, indexed by position
_wgts = None
_focus = None
def __init__(self, threads, dbman):
self._threads = threads
self._dbman = dbman
self._tids = []
self._wgts = {}
self._focus = 0
super().__init__()
def __len__(self):
while not self._iter_done:
self._get_next_item()
return len(self._tids)
def __getitem__(self, pos):
self._check_pos(pos)
if not pos in self._wgts:
# make sure an exception while constructing the widget does not get
# swallowed by urwid
try:
self._wgts[pos] = ThreadlineWidget(self._tids[pos], self._dbman)
except (KeyError, IndexError, TypeError) as e:
raise ValueError('Exception while constructing threadline widget') from e
return self._wgts[pos]
def _check_pos(self, pos):
if pos < 0:
raise IndexError
while not self._iter_done and pos >= len(self._tids):
self._get_next_item()
if pos >= len(self._tids):
raise IndexError
return pos
def next_position(self, pos):
return self._check_pos(pos + 1)
def prev_position(self, pos):
return self._check_pos(pos - 1)
@property
def focus(self):
return self._focus
def set_focus(self, pos):
self._check_pos(pos)
self._focus = pos
self._modified()
def _get_next_item(self):
if self._iter_done:
return None
try:
self._tids.append(next(self._threads))
except StopIteration:
self._iter_done = True
class SearchBuffer(Buffer):
"""shows a result list of threads for a query"""
modename = 'search'
_result_count_val = None
_thread_count_val = None
def __init__(self, ui, initialquery='', sort_order=None):
self.dbman = ui.dbman
self.ui = ui
self.querystring = initialquery
default_order = settings.get('search_threads_sort_order')
self.sort_order = sort_order or default_order
self.rebuild()
super().__init__()
def __str__(self):
formatstring = '[search] for "%s" (%d message%s in %d thread%s)'
return formatstring % (self.querystring,
self._result_count, 's' if self._result_count > 1 else '',
self._thread_count, 's' if self._thread_count > 1 else '')
@property
def _result_count(self):
if self._result_count_val is None:
self._result_count_val = self.dbman.count_messages(self.querystring)
return self._result_count_val
@property
def _thread_count(self):
if self._thread_count_val is None:
self._thread_count_val = self.dbman.count_threads(self.querystring)
return self._thread_count_val
def get_info(self):
info = {}
info['querystring'] = self.querystring
info['result_count'] = self._result_count
info['thread_count'] = self._thread_count
info['result_count_positive'] = 's' if info['result_count'] > 1 else ''
return info
def rebuild(self):
exclude_tags = settings.get_notmuch_setting('search', 'exclude_tags')
if exclude_tags:
exclude_tags = frozenset([t for t in exclude_tags.split(';') if t])
else:
exclude_tags = frozenset()
self._result_count_val = None
self._thread_count_val = None
try:
threads = self.dbman.get_threads(self.querystring, self.sort_order,
exclude_tags)
except NotmuchError:
self.ui.notify('malformed query string: %s' % self.querystring,
'error')
self.listbox = urwid.ListBox([])
self.body = self.listbox
return
self.threadlist = IterWalker(threads, self.dbman)
self.listbox = urwid.ListBox(self.threadlist)
self.body = self.listbox
def get_selected_threadline(self):
"""
returns curently focussed :class:`alot.widgets.ThreadlineWidget`
from the result list.
"""
return self.threadlist[self.threadlist.focus]
def get_selected_thread(self):
"""returns currently selected :class:`~alot.db.Thread`"""
threadlinewidget = self.get_selected_threadline()
thread = None
if threadlinewidget:
thread = threadlinewidget.get_thread()
return thread
def focus_first(self):
self.body.set_focus(0)
def focus_last(self):
self.body.set_focus(len(self.threadlist) - 1)
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