NomadNet/nomadnet/ui/textui/Conversations.py
2021-09-16 19:54:32 +02:00

740 lines
30 KiB
Python

import RNS
import os
import time
import nomadnet
import LXMF
import urwid
from datetime import datetime
from nomadnet.Directory import DirectoryEntry
from nomadnet.vendor.additional_urwid_widgets import IndicativeListBox
class ConversationListDisplayShortcuts():
def __init__(self, app):
self.app = app
self.widget = urwid.AttrMap(urwid.Text("[Enter] Open [C-e] Peer Info [C-x] Delete [C-n] New"), "shortcutbar")
class ConversationDisplayShortcuts():
def __init__(self, app):
self.app = app
self.widget = urwid.AttrMap(urwid.Text("[C-d] Send [C-k] Clear Editor [C-w] Close [C-t] Editor Type [C-p] Purge [C-x] Clear History"), "shortcutbar")
class ConversationsArea(urwid.LineBox):
def keypress(self, size, key):
if key == "ctrl e":
self.delegate.edit_selected_in_directory()
elif key == "ctrl x":
self.delegate.delete_selected_conversation()
elif key == "ctrl n":
self.delegate.new_conversation()
elif key == "tab":
self.delegate.app.ui.main_display.frame.set_focus("header")
elif key == "up" and (self.delegate.ilb.first_item_is_selected() or self.delegate.ilb.body_is_empty()):
self.delegate.app.ui.main_display.frame.set_focus("header")
else:
return super(ConversationsArea, self).keypress(size, key)
class DialogLineBox(urwid.LineBox):
def keypress(self, size, key):
if key == "esc":
self.delegate.update_conversation_list()
else:
return super(DialogLineBox, self).keypress(size, key)
class ConversationsDisplay():
list_width = 0.33
cached_conversation_widgets = {}
def __init__(self, app):
self.app = app
self.dialog_open = False
self.currently_displayed_conversation = None
def disp_list_shortcuts(sender, arg1, arg2):
self.shortcuts_display = self.list_shortcuts
self.app.ui.main_display.update_active_shortcuts()
self.update_listbox()
self.columns_widget = urwid.Columns(
[
("weight", ConversationsDisplay.list_width, self.listbox),
("weight", 1-ConversationsDisplay.list_width, self.make_conversation_widget(None))
],
dividechars=0, focus_column=0, box_columns=[0]
)
self.list_shortcuts = ConversationListDisplayShortcuts(self.app)
self.editor_shortcuts = ConversationDisplayShortcuts(self.app)
self.shortcuts_display = self.list_shortcuts
self.widget = self.columns_widget
nomadnet.Conversation.created_callback = self.update_conversation_list
def focus_change_event(self):
# This hack corrects buggy styling behaviour in IndicativeListBox
if not self.dialog_open:
ilb_position = self.ilb.get_selected_position()
self.update_conversation_list()
if ilb_position != None:
self.ilb.select_item(ilb_position)
def update_listbox(self):
conversation_list_widgets = []
for conversation in self.app.conversations():
conversation_list_widgets.append(self.conversation_list_widget(conversation))
self.list_widgets = conversation_list_widgets
self.ilb = IndicativeListBox(
self.list_widgets,
on_selection_change=self.conversation_list_selection,
initialization_is_selection_change=False,
highlight_offFocus="list_off_focus"
)
self.listbox = ConversationsArea(urwid.Filler(self.ilb, height=("relative", 100)))
self.listbox.delegate = self
def delete_selected_conversation(self):
self.dialog_open = True
source_hash = self.ilb.get_selected_item().source_hash
def dismiss_dialog(sender):
self.update_conversation_list()
self.dialog_open = False
def confirmed(sender):
self.dialog_open = False
self.delete_conversation(source_hash)
nomadnet.Conversation.delete_conversation(source_hash, self.app)
self.update_conversation_list()
dialog = DialogLineBox(
urwid.Pile([
urwid.Text("Delete conversation with\n"+self.app.directory.simplest_display_str(bytes.fromhex(source_hash))+"\n", align="center"),
urwid.Columns([("weight", 0.45, urwid.Button("Yes", on_press=confirmed)), ("weight", 0.1, urwid.Text("")), ("weight", 0.45, urwid.Button("No", on_press=dismiss_dialog))])
]), title="?"
)
dialog.delegate = self
bottom = self.listbox
overlay = urwid.Overlay(dialog, bottom, align="center", width=("relative", 100), valign="middle", height="pack", left=2, right=2)
options = self.columns_widget.options("weight", ConversationsDisplay.list_width)
self.columns_widget.contents[0] = (overlay, options)
def edit_selected_in_directory(self):
g = self.app.ui.glyphs
self.dialog_open = True
source_hash_text = self.ilb.get_selected_item().source_hash
display_name = self.ilb.get_selected_item().display_name
if display_name == None:
display_name = ""
e_id = urwid.Edit(caption="Addr : ",edit_text=source_hash_text)
t_id = urwid.Text("Addr : "+source_hash_text)
e_name = urwid.Edit(caption="Name : ",edit_text=display_name)
selected_id_widget = t_id
untrusted_selected = False
unknown_selected = True
trusted_selected = False
try:
if self.app.directory.find(bytes.fromhex(source_hash_text)):
trust_level = self.app.directory.trust_level(bytes.fromhex(source_hash_text))
if trust_level == DirectoryEntry.UNTRUSTED:
untrusted_selected = True
unknown_selected = False
trusted_selected = False
elif trust_level == DirectoryEntry.UNKNOWN:
untrusted_selected = False
unknown_selected = True
trusted_selected = False
elif trust_level == DirectoryEntry.TRUSTED:
untrusted_selected = False
unknown_selected = False
trusted_selected = True
except Exception as e:
pass
trust_button_group = []
r_untrusted = urwid.RadioButton(trust_button_group, "Untrusted", state=untrusted_selected)
r_unknown = urwid.RadioButton(trust_button_group, "Unknown", state=unknown_selected)
r_trusted = urwid.RadioButton(trust_button_group, "Trusted", state=trusted_selected)
def dismiss_dialog(sender):
self.update_conversation_list()
self.dialog_open = False
def confirmed(sender):
try:
display_name = e_name.get_edit_text()
source_hash = bytes.fromhex(e_id.get_edit_text())
trust_level = DirectoryEntry.UNTRUSTED
if r_unknown.state == True:
trust_level = DirectoryEntry.UNKNOWN
elif r_trusted.state == True:
trust_level = DirectoryEntry.TRUSTED
entry = DirectoryEntry(source_hash, display_name, trust_level)
self.app.directory.remember(entry)
self.update_conversation_list()
self.dialog_open = False
self.app.ui.main_display.sub_displays.network_display.directory_change_callback()
except Exception as e:
RNS.log("Could not save directory entry. The contained exception was: "+str(e), RNS.LOG_VERBOSE)
if not dialog_pile.error_display:
dialog_pile.error_display = True
options = dialog_pile.options(height_type="pack")
dialog_pile.contents.append((urwid.Text(""), options))
dialog_pile.contents.append((urwid.Text(("error_text", "Could not save entry. Check your input."), align="center"), options))
source_is_known = self.app.directory.is_known(bytes.fromhex(source_hash_text))
if source_is_known:
known_section = urwid.Divider(g["divider1"])
else:
def query_action(sender, user_data):
self.close_conversation_by_hash(user_data)
nomadnet.Conversation.query_for_peer(user_data)
options = dialog_pile.options(height_type="pack")
dialog_pile.contents = [
(urwid.Text("Query sent"), options),
(urwid.Button("OK", on_press=dismiss_dialog), options)
]
query_button = urwid.Button("Query network for keys", on_press=query_action, user_data=source_hash_text)
known_section = urwid.Pile([urwid.Divider(g["divider1"]), urwid.Text(g["info"]+"\n", align="center"), urwid.Text("The identity of this peer is not known, and you cannot currently communicate.\n", align="center"), query_button, urwid.Divider(g["divider1"])])
dialog_pile = urwid.Pile([
selected_id_widget,
e_name,
urwid.Divider(g["divider1"]),
r_untrusted,
r_unknown,
r_trusted,
known_section,
urwid.Columns([("weight", 0.45, urwid.Button("Save", on_press=confirmed)), ("weight", 0.1, urwid.Text("")), ("weight", 0.45, urwid.Button("Back", on_press=dismiss_dialog))])
])
dialog_pile.error_display = False
dialog = DialogLineBox(dialog_pile, title="Peer Info")
dialog.delegate = self
bottom = self.listbox
overlay = urwid.Overlay(dialog, bottom, align="center", width=("relative", 100), valign="middle", height="pack", left=2, right=2)
options = self.columns_widget.options("weight", ConversationsDisplay.list_width)
self.columns_widget.contents[0] = (overlay, options)
def new_conversation(self):
self.dialog_open = True
source_hash = ""
display_name = ""
e_id = urwid.Edit(caption="Addr : ",edit_text=source_hash)
e_name = urwid.Edit(caption="Name : ",edit_text=display_name)
trust_button_group = []
r_untrusted = urwid.RadioButton(trust_button_group, "Untrusted")
r_unknown = urwid.RadioButton(trust_button_group, "Unknown", state=True)
r_trusted = urwid.RadioButton(trust_button_group, "Trusted")
def dismiss_dialog(sender):
self.update_conversation_list()
self.dialog_open = False
def confirmed(sender):
try:
existing_conversations = nomadnet.Conversation.conversation_list(self.app)
display_name = e_name.get_edit_text()
source_hash_text = e_id.get_edit_text()
source_hash = bytes.fromhex(source_hash_text)
trust_level = DirectoryEntry.UNTRUSTED
if r_unknown.state == True:
trust_level = DirectoryEntry.UNKNOWN
elif r_trusted.state == True:
trust_level = DirectoryEntry.TRUSTED
if not source_hash in [c[0] for c in existing_conversations]:
entry = DirectoryEntry(source_hash, display_name, trust_level)
self.app.directory.remember(entry)
new_conversation = nomadnet.Conversation(source_hash_text, nomadnet.NomadNetworkApp.get_shared_instance(), initiator=True)
self.update_conversation_list()
self.display_conversation(source_hash_text)
self.dialog_open = False
except Exception as e:
RNS.log("Could not start conversation. The contained exception was: "+str(e), RNS.LOG_VERBOSE)
if not dialog_pile.error_display:
dialog_pile.error_display = True
options = dialog_pile.options(height_type="pack")
dialog_pile.contents.append((urwid.Text(""), options))
dialog_pile.contents.append((urwid.Text(("error_text", "Could not start conversation. Check your input."), align="center"), options))
dialog_pile = urwid.Pile([
e_id,
e_name,
urwid.Text(""),
r_untrusted,
r_unknown,
r_trusted,
urwid.Text(""),
urwid.Columns([("weight", 0.45, urwid.Button("Create", on_press=confirmed)), ("weight", 0.1, urwid.Text("")), ("weight", 0.45, urwid.Button("Back", on_press=dismiss_dialog))])
])
dialog_pile.error_display = False
dialog = DialogLineBox(dialog_pile, title="New Conversation")
dialog.delegate = self
bottom = self.listbox
overlay = urwid.Overlay(dialog, bottom, align="center", width=("relative", 100), valign="middle", height="pack", left=2, right=2)
options = self.columns_widget.options("weight", ConversationsDisplay.list_width)
self.columns_widget.contents[0] = (overlay, options)
def delete_conversation(self, source_hash):
if source_hash in ConversationsDisplay.cached_conversation_widgets:
conversation = ConversationsDisplay.cached_conversation_widgets[source_hash]
self.close_conversation(conversation)
def conversation_list_selection(self, arg1, arg2):
pass
def update_conversation_list(self):
ilb_position = self.ilb.get_selected_position()
self.update_listbox()
options = self.columns_widget.options("weight", ConversationsDisplay.list_width)
self.columns_widget.contents[0] = (self.listbox, options)
if ilb_position != None:
self.ilb.select_item(ilb_position)
nomadnet.NomadNetworkApp.get_shared_instance().ui.loop.draw_screen()
if self.currently_displayed_conversation != None:
if self.app.conversation_is_unread(self.currently_displayed_conversation):
self.app.mark_conversation_read(self.currently_displayed_conversation)
try:
if os.path.isfile(self.app.conversationpath + "/" + self.currently_displayed_conversation + "/unread"):
os.unlink(self.app.conversationpath + "/" + self.currently_displayed_conversation + "/unread")
except Exception as e:
raise e
def display_conversation(self, sender=None, source_hash=None):
if self.currently_displayed_conversation != None:
if self.app.conversation_is_unread(self.currently_displayed_conversation):
self.app.mark_conversation_read(self.currently_displayed_conversation)
self.currently_displayed_conversation = source_hash
options = self.widget.options("weight", 1-ConversationsDisplay.list_width)
self.widget.contents[1] = (self.make_conversation_widget(source_hash), options)
if source_hash == None:
self.widget.set_focus_column(0)
else:
if self.app.conversation_is_unread(source_hash):
self.app.mark_conversation_read(source_hash)
self.update_conversation_list()
self.widget.set_focus_column(1)
conversation_position = None
index = 0
for widget in self.list_widgets:
if widget.source_hash == source_hash:
conversation_position = index
index += 1
if conversation_position != None:
self.ilb.select_item(conversation_position)
def make_conversation_widget(self, source_hash):
if source_hash in ConversationsDisplay.cached_conversation_widgets:
conversation_widget = ConversationsDisplay.cached_conversation_widgets[source_hash]
if source_hash != None:
conversation_widget.update_message_widgets(replace=True)
conversation_widget.check_editor_allowed()
return conversation_widget
else:
widget = ConversationWidget(source_hash)
widget.delegate = self
ConversationsDisplay.cached_conversation_widgets[source_hash] = widget
widget.check_editor_allowed()
return widget
def close_conversation_by_hash(self, conversation_hash):
if conversation_hash in ConversationsDisplay.cached_conversation_widgets:
ConversationsDisplay.cached_conversation_widgets.pop(conversation_hash)
if self.currently_displayed_conversation == conversation_hash:
self.display_conversation(sender=None, source_hash=None)
def close_conversation(self, conversation):
if conversation.source_hash in ConversationsDisplay.cached_conversation_widgets:
ConversationsDisplay.cached_conversation_widgets.pop(conversation.source_hash)
if self.currently_displayed_conversation == conversation.source_hash:
self.display_conversation(sender=None, source_hash=None)
def conversation_list_widget(self, conversation):
trust_level = conversation[2]
display_name = conversation[1]
source_hash = conversation[0]
unread = conversation[4]
g = self.app.ui.glyphs
if trust_level == DirectoryEntry.UNTRUSTED:
symbol = g["cross"]
style = "list_untrusted"
focus_style = "list_focus_untrusted"
elif trust_level == DirectoryEntry.UNKNOWN:
symbol = "?"
style = "list_unknown"
focus_style = "list_focus"
elif trust_level == DirectoryEntry.TRUSTED:
symbol = g["check"]
style = "list_trusted"
focus_style = "list_focus_trusted"
elif trust_level == DirectoryEntry.WARNING:
symbol = g["warning"]
style = "list_warning"
focus_style = "list_focus"
else:
symbol = g["warning"]
style = "list_untrusted"
focus_style = "list_focus_untrusted"
display_text = symbol
if display_name != None and display_name != "":
display_text += " "+display_name
if trust_level != DirectoryEntry.TRUSTED:
display_text += " <"+source_hash+">"
else:
if unread:
if source_hash != self.currently_displayed_conversation:
display_text += " "+g["unread"]
widget = ListEntry(display_text)
urwid.connect_signal(widget, "click", self.display_conversation, conversation[0])
display_widget = urwid.AttrMap(widget, style, focus_style)
display_widget.source_hash = source_hash
display_widget.display_name = display_name
return display_widget
def shortcuts(self):
focus_path = self.widget.get_focus_path()
if focus_path[0] == 0:
return self.list_shortcuts
elif focus_path[0] == 1:
return self.editor_shortcuts
else:
return self.list_shortcuts
class ListEntry(urwid.Text):
_selectable = True
signals = ["click"]
def keypress(self, size, key):
"""
Send 'click' signal on 'activate' command.
"""
if self._command_map[key] != urwid.ACTIVATE:
return key
self._emit('click')
def mouse_event(self, size, event, button, x, y, focus):
"""
Send 'click' signal on button 1 press.
"""
if button != 1 or not urwid.util.is_mouse_press(event):
return False
self._emit('click')
return True
class MessageEdit(urwid.Edit):
def keypress(self, size, key):
if key == "ctrl d":
self.delegate.send_message()
elif key == "ctrl k":
self.delegate.clear_editor()
elif key == "up":
y = self.get_cursor_coords(size)[1]
if y == 0:
if self.delegate.full_editor_active and self.name == "title_editor":
self.delegate.frame.set_focus("body")
elif not self.delegate.full_editor_active and self.name == "content_editor":
self.delegate.frame.set_focus("body")
else:
return super(MessageEdit, self).keypress(size, key)
else:
return super(MessageEdit, self).keypress(size, key)
else:
return super(MessageEdit, self).keypress(size, key)
class ConversationFrame(urwid.Frame):
def keypress(self, size, key):
if self.get_focus() == "body":
if key == "up" and self.delegate.messagelist.top_is_visible:
nomadnet.NomadNetworkApp.get_shared_instance().ui.main_display.frame.set_focus("header")
elif key == "down" and self.delegate.messagelist.bottom_is_visible:
self.set_focus("footer")
else:
return super(ConversationFrame, self).keypress(size, key)
elif key == "ctrl k":
self.delegate.clear_editor()
else:
return super(ConversationFrame, self).keypress(size, key)
class ConversationWidget(urwid.WidgetWrap):
def __init__(self, source_hash):
self.app = nomadnet.NomadNetworkApp.get_shared_instance()
g = self.app.ui.glyphs
if source_hash == None:
self.frame = None
display_widget = urwid.LineBox(urwid.Filler(urwid.Text("\n No conversation selected"), "top"))
urwid.WidgetWrap.__init__(self, display_widget)
else:
if source_hash in ConversationsDisplay.cached_conversation_widgets:
return ConversationsDisplay.cached_conversation_widgets[source_hash]
else:
self.source_hash = source_hash
self.conversation = nomadnet.Conversation(source_hash, nomadnet.NomadNetworkApp.get_shared_instance())
self.message_widgets = []
self.updating_message_widgets = False
self.update_message_widgets()
self.conversation.register_changed_callback(self.conversation_changed)
#title_editor = MessageEdit(caption="\u270E", edit_text="", multiline=False)
title_editor = MessageEdit(caption="", edit_text="", multiline=False)
title_editor.delegate = self
title_editor.name = "title_editor"
#msg_editor = MessageEdit(caption="\u270E", edit_text="", multiline=True)
msg_editor = MessageEdit(caption="", edit_text="", multiline=True)
msg_editor.delegate = self
msg_editor.name = "content_editor"
header = None
if self.conversation.trust_level == DirectoryEntry.UNTRUSTED:
header = urwid.AttrMap(urwid.Padding(urwid.Text(g["warning"]+" Warning: Conversation with untrusted peer "+g["warning"], align="center")), "msg_warning_untrusted")
self.minimal_editor = urwid.AttrMap(msg_editor, "msg_editor")
self.minimal_editor.name = "minimal_editor"
title_columns = urwid.Columns([
(8, urwid.Text("Title")),
urwid.AttrMap(title_editor, "msg_editor"),
])
content_columns = urwid.Columns([
(8, urwid.Text("Content")),
urwid.AttrMap(msg_editor, "msg_editor")
])
self.full_editor = urwid.Pile([
title_columns,
content_columns
])
self.full_editor.name = "full_editor"
self.content_editor = msg_editor
self.title_editor = title_editor
self.full_editor_active = False
self.frame = ConversationFrame(
self.messagelist,
header=header,
footer=self.minimal_editor,
focus_part="footer"
)
self.frame.delegate = self
self.display_widget = urwid.LineBox(
self.frame
)
urwid.WidgetWrap.__init__(self, self.display_widget)
def clear_history_dialog(self):
def dismiss_dialog(sender):
self.dialog_open = False
self.conversation_changed(None)
def confirmed(sender):
self.dialog_open = False
self.conversation.clear_history()
self.conversation_changed(None)
dialog = DialogLineBox(
urwid.Pile([
urwid.Text("Clear conversation history\n", align="center"),
urwid.Columns([("weight", 0.45, urwid.Button("Yes", on_press=confirmed)), ("weight", 0.1, urwid.Text("")), ("weight", 0.45, urwid.Button("No", on_press=dismiss_dialog))])
]), title="?"
)
dialog.delegate = self
bottom = self.messagelist
overlay = urwid.Overlay(dialog, bottom, align="center", width=34, valign="middle", height="pack", left=2, right=2)
self.frame.contents["body"] = (overlay, self.frame.options())
self.frame.set_focus("body")
def toggle_editor(self):
if self.full_editor_active:
self.frame.contents["footer"] = (self.minimal_editor, None)
self.full_editor_active = False
else:
self.frame.contents["footer"] = (self.full_editor, None)
self.full_editor_active = True
def check_editor_allowed(self):
g = self.app.ui.glyphs
if self.frame:
allowed = nomadnet.NomadNetworkApp.get_shared_instance().directory.is_known(bytes.fromhex(self.source_hash))
if allowed:
self.frame.contents["footer"] = (self.minimal_editor, None)
else:
warning = urwid.AttrMap(urwid.Padding(urwid.Text(g["info"]+" You cannot currently communicate with this peer, since it's identity keys are not known", align="center")), "msg_header_caution")
self.frame.contents["footer"] = (warning, None)
def toggle_focus_area(self):
name = ""
try:
name = self.frame.get_focus_widgets()[0].name
except Exception as e:
pass
if name == "messagelist":
self.frame.set_focus("footer")
elif name == "minimal_editor" or name == "full_editor":
self.frame.set_focus("body")
def keypress(self, size, key):
if key == "tab":
self.toggle_focus_area()
elif key == "ctrl w":
self.close()
elif key == "ctrl p":
self.conversation.purge_failed()
self.conversation_changed(None)
elif key == "ctrl t":
self.toggle_editor()
elif key == "ctrl x":
self.clear_history_dialog()
else:
return super(ConversationWidget, self).keypress(size, key)
def conversation_changed(self, conversation):
self.update_message_widgets(replace = True)
def update_message_widgets(self, replace = False):
while self.updating_message_widgets:
time.sleep(0.5)
self.updating_message_widgets = True
self.message_widgets = []
added_hashes = []
for message in self.conversation.messages:
message_hash = message.get_hash()
if not message_hash in added_hashes:
added_hashes.append(message_hash)
message_widget = LXMessageWidget(message)
self.message_widgets.append(message_widget)
self.message_widgets.sort(key=lambda m: m.timestamp, reverse=False)
from nomadnet.vendor.additional_urwid_widgets import IndicativeListBox
self.messagelist = IndicativeListBox(self.message_widgets, position = len(self.message_widgets)-1)
self.messagelist.name = "messagelist"
if replace:
self.frame.contents["body"] = (self.messagelist, None)
nomadnet.NomadNetworkApp.get_shared_instance().ui.loop.draw_screen()
self.updating_message_widgets = False
def clear_editor(self):
self.content_editor.set_edit_text("")
self.title_editor.set_edit_text("")
def send_message(self):
content = self.content_editor.get_edit_text()
title = self.title_editor.get_edit_text()
if not content == "":
if self.conversation.send(content, title):
self.clear_editor()
else:
pass
def close(self):
self.delegate.close_conversation(self)
class LXMessageWidget(urwid.WidgetWrap):
def __init__(self, message):
app = nomadnet.NomadNetworkApp.get_shared_instance()
g = app.ui.glyphs
self.timestamp = message.get_timestamp()
time_format = app.time_format
message_time = datetime.fromtimestamp(self.timestamp)
encryption_string = ""
if message.get_transport_encrypted():
encryption_string = " ["+g["encrypted"]+" "+str(message.get_transport_encryption())+"]"
else:
encryption_string = " ["+g["plaintext"]+" "+str(message.get_transport_encryption())+"]"
title_string = message_time.strftime(time_format)+encryption_string
if app.lxmf_destination.hash == message.lxm.source_hash:
if message.lxm.state == LXMF.LXMessage.DELIVERED:
header_style = "msg_header_delivered"
title_string = g["check"]+" "+title_string
elif message.lxm.state == LXMF.LXMessage.FAILED:
header_style = "msg_header_failed"
title_string = g["cross"]+" "+title_string
else:
header_style = "msg_header_sent"
title_string = g["arrow_r"]+" "+title_string
else:
if message.signature_validated():
header_style = "msg_header_ok"
title_string = g["check"]+" "+title_string
else:
header_style = "msg_header_caution"
title_string = g["warning"]+" "+message.get_signature_description() + "\n " + title_string
if message.get_title() != "":
title_string += " | " + message.get_title()
title = urwid.AttrMap(urwid.Text(title_string), header_style)
display_widget = urwid.Pile([
title,
urwid.Text(message.get_content()),
urwid.Text("")
])
urwid.WidgetWrap.__init__(self, display_widget)