Basic application layout with urwid
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# VoIP.ms SMS TUI
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TUI application for sending/receiving SMS messages using VoIP.ms API
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#!/usr/bin/env python
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#
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# TUI for VoIP.ms SMS API
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#
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# Copyright (C) 2024 John Mertz <git@john.me.tz>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Source: https://git.john.me.tz/jpm/VoIPms-SMS-TUI
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from __future__ import annotations
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import typing
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import urwid
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class ConversationModel:
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def __init__(self):
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self.data = {
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"1234567890": ["Alice Bobson", { 'id': 1, 'sender':'1111111111', 'timestamp':100, 'msg': "hi"},{ 'id': 2, 'sender':'1234567890', 'timestamp':200, 'msg': "wassup!"}],
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"1112223333": ["", { 'id': 1, 'sender':'1111111111', 'timestamp':1, 'msg': "hello"},{ 'id': 2, 'sender':'1112223333', 'timestamp':2, 'msg': "oh, hi"}],
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}
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self.conversations = []
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for key in self.data:
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self.conversations.append(key)
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self.current_conversation=self.conversations[0]
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self.settings = {
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"me_left": 1
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}
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def get_conversations(self):
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return self.conversations
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def set_conversation(self, m) -> None:
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self.current_conversation = m
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def get_messages(self):
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lines = []
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d = self.data[self.current_conversation]
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last_time = 0
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for m in d:
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if not last_time:
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if m != "":
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lines.append(urwid.AttrMap(urwid.Text(m, urwid.CENTER), "header"))
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else:
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lines.append(urwid.Text(self.current_conversation, urwid.CENTER))
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last_time=1
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continue
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if m['timestamp']-last_time >= 10:
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lines.append(urwid.Text(str(m['timestamp']), urwid.CENTER))
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last_time = m['timestamp']
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if (m['sender'] == self.current_conversation) ^ (self.settings['me_left'] == 1):
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lines.append(urwid.Padding(urwid.Text(m['msg'], urwid.RIGHT),left=10,right=1))
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else:
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lines.append(urwid.Padding(urwid.Text(m['msg'], urwid.LEFT),left=1,right=10))
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return lines
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class ConversationView(urwid.WidgetWrap):
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"""
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A class responsible for providing the application's interface and
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graph display.
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"""
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palette: typing.ClassVar[tuple[str, str, str, ...]] = [
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("body", "black", "light gray", "standout"),
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("header", "white", "dark red", "bold"),
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("screen edge", "light blue", "dark cyan"),
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("main shadow", "dark gray", "black"),
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("line", "black", "light gray", "standout"),
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("bg background", "light gray", "black"),
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("bg 1", "black", "dark blue", "standout"),
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("bg 1 smooth", "dark blue", "black"),
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("bg 2", "black", "dark cyan", "standout"),
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("bg 2 smooth", "dark cyan", "black"),
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("button normal", "light gray", "dark blue", "standout"),
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("button select", "white", "dark green"),
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("line", "black", "light gray", "standout"),
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("pg normal", "white", "black", "standout"),
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("pg complete", "white", "dark magenta"),
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("pg smooth", "dark magenta", "black"),
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]
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graph_samples_per_bar = 10
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graph_num_bars = 5
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graph_offset_per_second = 5
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def __init__(self, controller):
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self.controller = controller
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self.started = True
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self.offset = 0
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self.last_offset = None
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super().__init__(self.main_window())
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def update_conversation(self, force_update=False):
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return urwid.SimpleListWalker(self.controller.get_messages())
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def on_conversation_button(self, button, state):
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"""Notify the controller of a new conversation setting."""
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if state:
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# The new conversation is the label of the button
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self.controller.set_conversation(button.get_label().split("\n")[0])
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self.model.set_conversation(conversation)
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self.graph = self.conversation()
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self.view = urwid.Frame(
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urwid.AttrMap(self.graph, "body"),
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footer=self.send
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)
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self.last_offset = None
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def on_conversation_change(self, m):
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"""Handle external conversation change by updating radio buttons."""
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for rb in self.conversation_buttons:
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if rb.base_widget.label == m:
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rb.base_widget.set_state(True, do_callback=False)
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break
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self.last_offset = None
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conversation = self.controller.get_conversations()[0]
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def bar_graph(self, smooth=False):
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satt = None
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if smooth:
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satt = {(1, 0): "bg 1 smooth", (2, 0): "bg 2 smooth"}
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w = urwid.BarGraph(["bg background", "bg 1", "bg 2"], satt=satt)
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return w
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def conversation(self):
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return urwid.ListBox(self.update_conversation())
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def button(self, t, fn):
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w = urwid.Button(t, fn)
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w = urwid.AttrMap(w, "button normal", "button select")
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return w
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def radio_button(self, g, label, fn):
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w = urwid.RadioButton(g, label+"\nName: "+label, False, on_state_change=fn)
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#w = urwid.RadioButton(g, label+"\nName: "+self.get_name(label), False, on_state_change=fn)
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w = urwid.AttrMap(w, "button normal", "button select")
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return w
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def get_name(self, name):
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return self.model.data[name][0]
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def exit_program(self, w):
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raise urwid.ExitMainLoop()
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def conversation_selection(self):
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conversations = self.controller.get_conversations()
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# setup conversation radio buttons
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self.conversation_buttons = []
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group = []
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for m in conversations:
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rb = self.radio_button(group, m, self.on_conversation_button)
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self.conversation_buttons.append(rb)
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lines = [
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*self.conversation_buttons,
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]
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w = urwid.ListBox(urwid.SimpleListWalker(lines))
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return w
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def send_message(self, msg):
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print("Send button pressed: "+msg.edit_text)
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def send_update(self, field, msg):
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field=msg.edit_text
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def main_window(self):
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#self.graph = self.bar_graph()
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self.graph = self.conversation()
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self.send_content = "preset"
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self.send_box = urwid.Edit("", self.send_content, multiline=True)
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urwid.connect_signal(self.send_box, 'change', self.send_update(self.send_content,self.send_box))
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self.send_button = urwid.Padding(
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urwid.AttrMap(
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urwid.Button(
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"SEND", self.send_message(self.send_box), align=urwid.CENTER
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),
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"buttn", "buttnf"
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),
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left=0,
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right=0
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)
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self.send = urwid.Columns([
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(urwid.WEIGHT, 8, self.send_box),
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self.send_button,
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])
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self.view = urwid.Frame(
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urwid.AttrMap(self.graph, "body"),
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footer=self.send
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)
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c = self.conversation_selection()
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w = urwid.Columns([c, (urwid.WEIGHT, 3, self.view)], dividechars=0, focus_column=0)
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w = urwid.AttrMap(w, "body")
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return w
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class SMSController:
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"""
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A class responsible for setting up the model and view and running
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the application.
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"""
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def __init__(self):
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self.model = ConversationModel()
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self.view = ConversationView(self)
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# use the first conversation as the default
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conversation = self.get_conversations()[0]
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self.model.set_conversation(conversation)
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# update the view
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self.view.on_conversation_change(conversation)
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self.view.update_conversation(True)
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def get_conversations(self):
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"""Allow our view access to the list of conversations."""
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return self.model.get_conversations()
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def set_conversation(self, m) -> None:
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"""Allow our view to set the conversation."""
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self.model.set_conversation(m)
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self.view.update_conversation(True)
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def get_messages(self):
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"""Provide data to our view for the graph."""
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return self.model.get_messages()
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def unhandled(self, key: str | tuple[str, int, int, int]) -> None:
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if key == "F8":
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self.exit_program
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def main(self):
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urwid.MainLoop(self.view, self.view.palette, unhandled_input=self.unhandled).run()
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self.loop.run()
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def main():
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SMSController().main()
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if __name__ == "__main__":
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main()
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