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# Copyright (C) 2011-2012 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
"""
Widgets specific to thread mode
"""
import logging
import re
import urwid
from .globals import TagWidget
from .globals import AttachmentWidget
from ..settings.const import settings
from ..db.utils import X_SIGNATURE_MESSAGE_HEADER
from ..helper import string_sanitize
class MessageSummaryWidget(urwid.WidgetWrap):
"""
one line summary of a :class:`~alot.db.message.Message`.
"""
def __init__(self, message, odd):
"""
:param message: a message
:type message: alot.db.Message
:param odd: odd entry in a pile of messages? Used for theming.
:type odd: bool
"""
self.message = message
self.odd = odd
if odd:
attr = settings.get_theming_attribute('thread', 'summary', 'odd')
else:
attr = settings.get_theming_attribute('thread', 'summary', 'even')
focus_att = settings.get_theming_attribute('thread', 'summary',
'focus')
cols = []
sumstr = self.__str__()
txt = urwid.Text(sumstr)
cols.append(txt)
if settings.get('msg_summary_hides_threadwide_tags'):
thread_tags = message.thread.get_tags(intersection=True)
outstanding_tags = set(message.get_tags()).difference(thread_tags)
tag_widgets = sorted(TagWidget(t, attr, focus_att)
for t in outstanding_tags)
else:
tag_widgets = sorted(TagWidget(t, attr, focus_att)
for t in message.get_tags())
for tag_widget in tag_widgets:
if not tag_widget.hidden:
cols.append(('fixed', tag_widget.width(), tag_widget))
line = urwid.AttrMap(urwid.Columns(cols, dividechars=1), attr,
focus_att)
super().__init__(line)
def __str__(self):
mail = self.message.get_email()
subj = mail.get_all('subject', [''])
subj = re.sub(r'\n\s+', r' ', ','.join(subj))
author, address = self.message.get_author()
date = self.message.get_datestring()
rep = '%s: %s' % (author if author != '' else address, subj)
if date is not None:
rep += " (%s)" % date
return rep
def selectable(self):
return True
def keypress(self, size, key):
return key
class FocusableText(urwid.WidgetWrap):
"""Selectable Text used for nodes in our example"""
def __init__(self, txt, att, att_focus):
t = urwid.Text(txt)
w = urwid.AttrMap(t, att, att_focus)
super().__init__(w)
def selectable(self):
return True
def keypress(self, size, key):
return key
class HeadersWidget(urwid.WidgetWrap):
"""
A flow widget displaying message headers.
"""
_key_attr = None
_value_attr = None
_gaps_attr = None
def __init__(self, key_attr, value_attr, gaps_attr):
"""
:param headerslist: list of key/value pairs to display
:type headerslist: list of (str, str)
:param key_attr: theming attribute to use for keys
:type key_attr: urwid.AttrSpec
:param value_attr: theming attribute to use for values
:type value_attr: urwid.AttrSpec
:param gaps_attr: theming attribute to wrap lines in
:type gaps_attr: urwid.AttrSpec
"""
self._key_attr = key_attr
self._value_attr = value_attr
self._gaps_attr = gaps_attr
super().__init__(urwid.Pile([]))
def set_headers(self, headers):
if len(headers) == 0:
self._w.contents.clear()
return
max_key_len = max(map(lambda x: len(x[0]), headers))
widgets = []
for key, value in headers:
# TODO even/odd
keyw = ('fixed', max_key_len + 1,
urwid.Text((self._key_attr, key)))
valuew = urwid.Text((self._value_attr, value))
linew = urwid.AttrMap(urwid.Columns([keyw, valuew]), self._gaps_attr)
widgets.append(linew)
self._w.contents = [(w, ('pack', None)) for w in widgets]
class MessageWidget(urwid.WidgetWrap):
"""
A flow widget displaying the contents of a single :class:`alot.db.Message`.
Collapsing this message corresponds to showing the summary only.
"""
_display_all_headers = None
_display_source = None
_headers_wgt = None
_source_wgt = None
_body_wgt = None
_attach_wgt = None
_QUOTE_CHARS = '>|:}#'
_QUOTE_REGEX = '(([ \t]*[{quote_chars}])+)'.format(quote_chars = _QUOTE_CHARS)
def __init__(self, message):
"""
:param message: Message to display
:type message: alot.db.Message
"""
self._message = message
self._headers_wgt = self._get_headers()
self._source_wgt = self._get_source()
self._body_wgt = self._get_body()
self._attach_wgt = self._get_attachments()
super().__init__(urwid.ListBox(urwid.SimpleListWalker([])))
self.display_all_headers = False
self.display_source = False
def get_message(self):
return self._message
def _reassemble(self, display_source):
widgets = []
if display_source:
widgets.append(self._source_wgt)
else:
widgets.append(self._headers_wgt)
if self._attach_wgt is not None:
widgets.append(self._attach_wgt)
widgets.append(self._body_wgt)
self._w.body[:] = widgets
def _get_source(self):
sourcetxt = self._message.get_email().as_string()
sourcetxt = string_sanitize(sourcetxt)
att = settings.get_theming_attribute('thread', 'body')
att_focus = settings.get_theming_attribute('thread', 'body_focus')
return FocusableText(sourcetxt, att, att_focus)
def _get_body(self):
attr_body = settings.get_theming_attribute('thread', 'body')
attrs_quote = settings.get_quote_theming()
body_lines = self._message.get_body_text().splitlines()
quote_levels = []
for line in body_lines:
level = 0
m = re.match(self._QUOTE_REGEX, line)
if m is not None:
g = m.group(0)
for c in self._QUOTE_CHARS:
level += g.count(c)
quote_levels.append(level)
line_widgets = []
for level, line in zip(quote_levels, body_lines):
if level == 0 or len(attrs_quote) < 1:
attr = attr_body
else:
attr = attrs_quote[(level - 1) % len(attrs_quote)]
line_widgets.append(urwid.Text((attr, line)))
return urwid.Pile(line_widgets)
def _get_headers(self):
key_attr = settings.get_theming_attribute('thread', 'header_key')
value_attr = settings.get_theming_attribute('thread', 'header_value')
gaps_attr = settings.get_theming_attribute('thread', 'header')
return HeadersWidget(key_attr, value_attr, gaps_attr)
def _get_attachments(self):
alist = []
for a in self._message.get_attachments():
alist.append(AttachmentWidget(a))
if alist:
return urwid.Pile(alist)
return None
@property
def display_all_headers(self):
return self._display_all_headers
@display_all_headers.setter
def display_all_headers(self, val):
val = bool(val)
if val == self._display_all_headers:
return
mail = self._message.get_email()
lines = []
if val:
# collect all header/value pairs in the order they appear
lines = list(mail.items())
else:
# only a selection of headers should be displayed.
# use order of the `headers` parameter
for key in settings.get('displayed_headers'):
if key in mail:
if key.lower() in ['cc', 'bcc', 'to']:
lines.append((key, ', '.join(mail.get_all(key))))
else:
for value in mail.get_all(key):
lines.append((key, value))
elif key.lower() == 'tags':
# TODO this should be in a separate widget
logging.debug('want tags header')
values = []
for t in self._message.get_tags():
tagrep = settings.get_tagstring_representation(t)
if t is not tagrep['translated']:
t = '%s (%s)' % (tagrep['translated'], t)
values.append(t)
lines.append((key, ', '.join(values)))
# OpenPGP pseudo headers
# TODO this should be in a separate widget
if mail[X_SIGNATURE_MESSAGE_HEADER]:
lines.append(('PGP-Signature', mail[X_SIGNATURE_MESSAGE_HEADER]))
self._headers_wgt.set_headers(lines)
self._display_all_headers = val
@property
def display_source(self):
return self._display_source
@display_source.setter
def display_source(self, val):
val = bool(val)
if val == self._display_source:
return
self._reassemble(val)
self._display_source = val
def get_selected_attachment(self):
"""
If an AttachmentWidget is currently focused, return it. Otherwise return
None.
"""
if self._w.focus is self._attach_wgt:
return self._attach_wgt.focus.attachment
return None
class ThreadNode(urwid.WidgetWrap):
_ARROW = '➤'
_HBAR = '─'
_VBAR = '│'
_TNODE = '├'
_CORNER = '└'
_decor_text = None
_have_next_sibling = None
def __init__(self, msg, thread, pos, indent):
msg_summary = MessageSummaryWidget(msg, pos & 1)
if msg.depth == 0:
wgt = msg_summary
else:
self._decor_text = urwid.Text('')
wgt = urwid.Columns([('pack', self._decor_text), msg_summary])
ancestor_chain = [msg]
for p in msg.parents():
ancestor_chain.insert(0, p)
have_sibling = []
for d, m in enumerate(ancestor_chain):
if d == 0:
have_sibling.append(m != thread.toplevel_messages[-1])
else:
have_sibling.append(m != ancestor_chain[d - 1].replies[-1])
self._have_next_sibling = have_sibling
super().__init__(wgt)
self.set_indent(indent)
def set_indent(self, indent):
if self._decor_text is None:
return
seg_text = []
if indent > 0:
depth = len(self._have_next_sibling) - 1
for d in range(depth):
if d == depth - 1:
corner = self._TNODE if self._have_next_sibling[d + 1] else self._CORNER
seg_text.append(corner + self._ARROW)
else:
bar = self._VBAR if self._have_next_sibling[d + 1] else ' '
seg_text.append(bar + ' ')
self._decor_text.set_text(''.join(seg_text))
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