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import urwid
from notmuch import NotmuchError
import widgets
from settings import settings
import commands
from walker import PipeWalker
from helper import shorten_author_string
from db.errors import NonexistantObjectError
class Buffer(object):
"""Abstract base class for buffers."""
modename = None # mode identifier for subclasses
def __init__(self, ui, widget):
self.ui = ui
self.body = widget
def __str__(self):
return '[%s]' % self.modename
def render(self, size, focus=False):
return self.body.render(size, focus)
def selectable(self):
return self.body.selectable()
def rebuild(self):
"""tells the buffer to (re)construct its visible content."""
pass
def keypress(self, size, key):
return self.body.keypress(size, key)
def cleanup(self):
"""called before buffer is dismissed"""
pass
class BufferlistBuffer(Buffer):
"""lists all active buffers"""
modename = 'bufferlist'
def __init__(self, ui, filtfun=None):
self.filtfun = filtfun
self.ui = ui
self.isinitialized = False
self.rebuild()
Buffer.__init__(self, ui, self.body)
def index_of(self, b):
"""
returns the index of :class:`Buffer` `b` in the global list of active
buffers.
"""
return self.ui.buffers.index(b)
def rebuild(self):
if self.isinitialized:
focusposition = self.bufferlist.get_focus()[1]
else:
focusposition = 0
self.isinitialized = True
lines = list()
displayedbuffers = filter(self.filtfun, self.ui.buffers)
for (num, b) in enumerate(displayedbuffers):
line = widgets.BufferlineWidget(b)
if (num % 2) == 0:
attr = settings.get_theming_attribute('bufferlist',
'results_even')
else:
attr = settings.get_theming_attribute('bufferlist',
'results_odd')
focus_att = settings.get_theming_attribute('bufferlist', 'focus')
buf = urwid.AttrMap(line, attr, focus_att)
num = urwid.Text('%3d:' % self.index_of(b))
lines.append(urwid.Columns([('fixed', 4, num), buf]))
self.bufferlist = urwid.ListBox(urwid.SimpleListWalker(lines))
self.bufferlist.set_focus(focusposition % len(displayedbuffers))
self.body = self.bufferlist
def get_selected_buffer(self):
"""returns currently selected :class:`Buffer` element from list"""
(linewidget, pos) = self.bufferlist.get_focus()
bufferlinewidget = linewidget.get_focus().original_widget
return bufferlinewidget.get_buffer()
class EnvelopeBuffer(Buffer):
"""message composition mode"""
modename = 'envelope'
def __init__(self, ui, envelope):
self.ui = ui
self.envelope = envelope
self.all_headers = False
self.rebuild()
Buffer.__init__(self, ui, self.body)
def __str__(self):
to = self.envelope.get('To', fallback='unset')
return '[envelope] to: %s' % (shorten_author_string(to, 400))
def rebuild(self):
displayed_widgets = []
hidden = settings.get('envelope_headers_blacklist')
#build lines
lines = []
for (k, vlist) in self.envelope.headers.items():
if (k not in hidden) or self.all_headers:
for value in vlist:
lines.append((k, value))
# add header list widget iff header values exists
if lines:
self.header_wgt = widgets.HeadersList(lines)
displayed_widgets.append(self.header_wgt)
#display attachments
lines = []
for a in self.envelope.attachments:
lines.append(widgets.AttachmentWidget(a, selectable=False))
if lines:
self.attachment_wgt = urwid.Pile(lines)
displayed_widgets.append(self.attachment_wgt)
self.body_wgt = urwid.Text(self.envelope.body)
displayed_widgets.append(self.body_wgt)
self.body = urwid.ListBox(displayed_widgets)
def toggle_all_headers(self):
"""toggles visibility of all envelope headers"""
self.all_headers = not self.all_headers
self.rebuild()
class SearchBuffer(Buffer):
"""shows a result list of threads for a query"""
modename = 'search'
threads = []
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.result_count = 0
self.isinitialized = False
self.proc = None # process that fills our pipe
self.rebuild()
Buffer.__init__(self, ui, self.body)
def __str__(self):
formatstring = '[search] for "%s" (%d message%s)'
return formatstring % (self.querystring, self.result_count,
's' * (not (self.result_count == 1)))
def cleanup(self):
self.kill_filler_process()
def kill_filler_process(self):
"""
terminates the process that fills this buffers
:class:`~alot.walker.PipeWalker`.
"""
if self.proc:
if self.proc.is_alive():
self.proc.terminate()
def rebuild(self):
if self.isinitialized:
pass
#focusposition = self.threadlist.get_focus()[1]
else:
#focusposition = 0
self.isinitialized = True
self.kill_filler_process()
self.result_count = self.dbman.count_messages(self.querystring)
try:
self.pipe, self.proc = self.dbman.get_threads(self.querystring,
self.sort_order)
except NotmuchError:
self.ui.notify('malformed query string: %s' % self.querystring,
'error')
self.listbox = urwid.ListBox(self.threadlist)
self.body = self.listbox
return
self.threadlist = PipeWalker(self.pipe, widgets.ThreadlineWidget,
dbman=self.dbman)
self.listbox = urwid.ListBox(self.threadlist)
#self.threadlist.set_focus(focusposition)
self.body = self.listbox
def get_selected_threadline(self):
"""
returns curently focussed :class:`alot.widgets.ThreadlineWidget`
from the result list.
"""
(threadlinewidget, size) = self.threadlist.get_focus()
return threadlinewidget
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
class ThreadBuffer(Buffer):
"""displays a thread as a tree of messages"""
modename = 'thread'
def __init__(self, ui, thread):
self.message_count = thread.get_total_messages()
self.thread = thread
self.rebuild()
Buffer.__init__(self, ui, self.body)
def __str__(self):
return '[thread] %s (%d message%s)' % (self.thread.get_subject(),
self.message_count,
's' * (self.message_count > 1))
def get_selected_thread(self):
"""returns the displayed :class:`~alot.db.Thread`"""
return self.thread
def _build_pile(self, acc, msg, parent, depth):
acc.append((parent, depth, msg))
for reply in self.thread.get_replies_to(msg):
self._build_pile(acc, reply, msg, depth + 1)
def rebuild(self):
try:
self.thread.refresh()
except NonexistantObjectError:
self.body = urwid.SolidFill()
self.message_count = 0
return
# depth-first traversing the thread-tree, thereby
# 1) build a list of tuples (parentmsg, depth, message) in DF order
# 2) create a dict that counts no. of direct replies per message
messages = list() # accumulator for 1,
childcount = {None: 0} # accumulator for 2)
for msg, replies in self.thread.get_messages().items():
childcount[msg] = len(replies)
# start with all toplevel msgs, then recursively call _build_pile
for msg in self.thread.get_toplevel_messages():
self._build_pile(messages, msg, None, 0)
childcount[None] += 1
# go through list from 1) and pile up message widgets for all msgs.
# each one will be given its depth, if siblings follow and where to
# draw bars (siblings follow at lower depths)
msglines = list()
bars = []
for (num, (p, depth, m)) in enumerate(messages):
bars = bars[:depth]
childcount[p] -= 1
bars.append(childcount[p] > 0)
mwidget = widgets.MessageWidget(m, even=(num % 2 == 0),
depth=depth,
bars_at=bars)
msglines.append(mwidget)
self.body = urwid.ListBox(msglines)
self.message_count = self.thread.get_total_messages()
def get_selection(self):
"""returns focussed :class:`~alot.widgets.MessageWidget`"""
(messagewidget, size) = self.body.get_focus()
return messagewidget
def get_messagewidgets(self):
"""returns all message widgets contained in this list"""
return self.body.body.contents
def get_selected_message(self):
"""returns focussed :class:`~alot.db.message.Message`"""
messagewidget = self.get_selection()
return messagewidget.get_message()
def get_message_widgets(self):
"""
returns all :class:`MessageWidgets <alot.widgets.MessageWidget>`
displayed in this thread-tree.
"""
return self.body.body.contents
def get_focus(self):
return self.body.get_focus()
def unfold_matching(self, querystring):
"""
unfolds those :class:`MessageWidgets <alot.widgets.MessageWidget>`
that represent :class:`Messages <alot.db.message.Message>` matching
`querystring`.
"""
for mw in self.get_message_widgets():
msg = mw.get_message()
if msg.matches(querystring):
mw.folded = False
if 'unread' in msg.get_tags():
msg.remove_tags(['unread'])
self.ui.apply_command(commands.globals.FlushCommand())
mw.rebuild()
class TagListBuffer(Buffer):
"""lists all tagstrings present in the notmuch database"""
modename = 'taglist'
def __init__(self, ui, alltags=[], filtfun=None):
self.filtfun = filtfun
self.ui = ui
self.tags = alltags
self.isinitialized = False
self.rebuild()
Buffer.__init__(self, ui, self.body)
def rebuild(self):
if self.isinitialized:
focusposition = self.taglist.get_focus()[1]
else:
focusposition = 0
self.isinitialized = True
lines = list()
displayedtags = sorted(filter(self.filtfun, self.tags),
key=unicode.lower)
for (num, b) in enumerate(displayedtags):
tw = widgets.TagWidget(b)
rows = [('fixed', tw.width(), tw)]
if tw.hidden:
rows.append(urwid.Text('[hidden]'))
elif tw.translated is not b:
rows.append(urwid.Text('(%s)' % b))
lines.append(urwid.Columns(rows, dividechars=1))
self.taglist = urwid.ListBox(urwid.SimpleListWalker(lines))
self.body = self.taglist
self.taglist.set_focus(focusposition % len(displayedtags))
def get_selected_tag(self):
"""returns selected tagstring"""
(cols, pos) = self.taglist.get_focus()
tagwidget = cols.get_focus()
return tagwidget.get_tag()
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