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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
"""
This contains alot-specific :ref:`urwid.Widgets` used in more than one mode.
"""
import urwid
from alot.helper import string_decode
from alot.settings import settings
from alot.db.attachment import Attachment
class AttachmentWidget(urwid.WidgetWrap):
"""
one-line summary of an :class:`~alot.db.attachment.Attachment`.
"""
def __init__(self, attachment, selectable=True):
self._selectable = selectable
self.attachment = attachment
if not isinstance(attachment, Attachment):
self.attachment = Attachment(self.attachment)
att = settings.get_theming_attribute('thread', 'attachment')
focus_att = settings.get_theming_attribute('thread',
'attachment_focus')
widget = urwid.AttrMap(urwid.Text(self.attachment.__str__()),
att, focus_att)
urwid.WidgetWrap.__init__(self, widget)
def get_attachment(self):
return self.attachment
def selectable(self):
return self._selectable
def keypress(self, size, key):
return key
class ChoiceWidget(urwid.Text):
def __init__(self, choices, callback, cancel=None, select=None):
self.choices = choices
self.callback = callback
self.cancel = cancel
self.select = select
items = []
for k, v in choices.items():
if v == select and select is not None:
items.append('[%s]:%s' % (k, v))
else:
items.append('(%s):%s' % (k, v))
urwid.Text.__init__(self, ' '.join(items))
def selectable(self):
return True
def keypress(self, size, key):
if key == 'select' and self.select is not None:
self.callback(self.select)
elif key == 'cancel' and self.cancel is not None:
self.callback(self.cancel)
elif key in self.choices:
self.callback(self.choices[key])
else:
return key
class CompleteEdit(urwid.Edit):
def __init__(self, completer, on_exit, edit_text=u'',
history=None, **kwargs):
self.completer = completer
self.on_exit = on_exit
self.history = list(history) # we temporarily add stuff here
self.historypos = None
if not isinstance(edit_text, unicode):
edit_text = string_decode(edit_text)
self.start_completion_pos = len(edit_text)
self.completions = None
urwid.Edit.__init__(self, edit_text=edit_text, **kwargs)
def keypress(self, size, key):
# if we tabcomplete
if key in ['tab', 'shift tab'] and self.completer:
# if not already in completion mode
if not self.completions:
self.completions = [(self.edit_text, self.edit_pos)] + \
self.completer.complete(self.edit_text, self.edit_pos)
self.focus_in_clist = 1
else: # otherwise tab through results
if key == 'tab':
self.focus_in_clist += 1
else:
self.focus_in_clist -= 1
if len(self.completions) > 1:
ctext, cpos = self.completions[self.focus_in_clist %
len(self.completions)]
self.set_edit_text(ctext)
self.set_edit_pos(cpos)
else:
self.edit_pos += 1
if self.edit_pos >= len(self.edit_text):
self.edit_text += ' '
self.completions = None
elif key in ['up', 'down']:
if self.history:
if self.historypos is None:
self.history.append(self.edit_text)
self.historypos = len(self.history) - 1
if key == 'cursor up':
self.historypos = (self.historypos + 1) % len(self.history)
else:
self.historypos = (self.historypos - 1) % len(self.history)
self.set_edit_text(self.history[self.historypos])
elif key == 'select':
self.on_exit(self.edit_text)
elif key == 'cancel':
self.on_exit(None)
elif key == 'ctrl a':
self.set_edit_pos(0)
elif key == 'ctrl e':
self.set_edit_pos(len(self.edit_text))
else:
result = urwid.Edit.keypress(self, size, key)
self.completions = None
return result
class HeadersList(urwid.WidgetWrap):
""" renders a pile of header values as key/value list """
def __init__(self, headerslist, key_attr, value_attr):
self.headers = headerslist
self.key_attr = key_attr
self.value_attr = value_attr
pile = urwid.Pile(self._build_lines(headerslist))
att = settings.get_theming_attribute('thread', 'header')
pile = urwid.AttrMap(pile, att)
urwid.WidgetWrap.__init__(self, pile)
def __str__(self):
return str(self.headers)
def _build_lines(self, lines):
max_key_len = 1
headerlines = []
#calc max length of key-string
for key, value in lines:
if len(key) > max_key_len:
max_key_len = len(key)
for key, value in lines:
##todo : even/odd
keyw = ('fixed', max_key_len + 1,
urwid.Text((self.key_attr, key)))
valuew = urwid.Text((self.value_attr, value))
line = urwid.Columns([keyw, valuew])
headerlines.append(line)
return headerlines
class TagWidget(urwid.AttrMap):
"""
text widget that renders a tagstring.
It looks up the string it displays in the `tags` section
of the config as well as custom theme settings for its tag.
"""
def __init__(self, tag, fallback_normal=None, fallback_focus=None):
self.tag = tag
representation = settings.get_tagstring_representation(tag,
fallback_normal,
fallback_focus)
self.translated = representation['translated']
self.hidden = self.translated == ''
self.txt = urwid.Text(self.translated, wrap='clip')
normal_att = representation['normal']
focus_att = representation['focussed']
self.attmaps = {'normal': normal_att, 'focus': focus_att}
urwid.AttrMap.__init__(self, self.txt, normal_att, focus_att)
def set_map(self, attrstring):
self.set_attr_map({None: self.attmaps[attrstring]})
def width(self):
# evil voodoo hotfix for double width chars that may
# lead e.g. to strings with length 1 that need width 2
return self.txt.pack()[0]
def selectable(self):
return True
def keypress(self, size, key):
return key
def get_tag(self):
return self.tag
def set_focussed(self):
self.set_attr_map(self.attmap['focus'])
def set_unfocussed(self):
self.set_attr_map(self.attmap['normal'])
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