Listado de Puertos Jack

#!/usr/bin/env python
# -*- coding: utf-8 -*-

####################################
###           Módulos            ###
####################################
import dbus
from gi.repository import Gtk
from dbus.mainloop.glib import DBusGMainLoop


# Hay que hacer este llamado antes de definir el bus
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

####################################
###             Bus              ###
####################################
bus = dbus.SessionBus()
jack_control_obj = bus.get_object("org.jackaudio.service", "/org/jackaudio/Controller")
jack_control_ifa = dbus.Interface(jack_control_obj, "org.jackaudio.JackPatchbay")

graph = jack_control_ifa.GetGraph(0)

####################################
###             GUI              ###
####################################
class MainWindow(Gtk.Window):
  def __init__(self):
    Gtk.Window.__init__(self, title="Listado de Puertos Jack")
    self.set_default_size(200, 200)
    self.ports = []
    self.clients = []
    self.model = Gtk.TreeStore(int, str)
    self.__create_model(graph[1])

    box = Gtk.VBox(False, 3)
    self.add(box)

    sw = Gtk.ScrolledWindow()
    self.treeView = Gtk.TreeView(self.model)

    cellRenderer = Gtk.CellRendererText()
    column = Gtk.TreeViewColumn("ID", cellRenderer, text=0)
    column1 = Gtk.TreeViewColumn("Puertos", cellRenderer, text=1)
    self.treeView.append_column(column)
    self.treeView.append_column(column1)

    sw.add(self.treeView)
    box.add(sw)

    button = Gtk.Button("Hola Mundo!")
    button.connect("clicked", self.printMSJ)

    box.pack_start(button, False, False, 0)

    jack_control_ifa.connect_to_signal("ClientAppeared", self.__add_client)
    jack_control_ifa.connect_to_signal("PortAppeared", self.__add_port)
    jack_control_ifa.connect_to_signal("ClientDisappeared", self.__del_client)
    jack_control_ifa.connect_to_signal("PortDisappeared", self.__del_port)

  def __create_model(self, item_list):
    for client in item_list:
      iter = self.model.append(None)
      self.model.set(iter,
                0, client[0],
                1, client[1])
      self.clients.append([client[0], client[1]])
      print("Agregando Cliente:", self.model.get_path(iter), ", ID:", client[0])
      print("  Name:", client[1])
      for port in client[2]:
        child_iter = self.model.append(iter)
        self.model.set(child_iter,
                  0, port[0],
                  1, port[1])
        self.ports.append([client[0], port[0], port[1], port[2], port[3]])
        print("--> Puerto:", self.model.get_path(child_iter), ", Port ID: ", port[0])
        print("     Port Name: ", port[1], ["output", "input"][port[2] % 2], ["Audio", "MIDI"][port[3]])

  def __add_client (self, new_graph_version, client_id, client_name):
    iter = self.model.append(None)
    self.model.set(iter,
              0, client_id,
              1, client_name)
    self.clients.append([client_id, client_name])
    print("Agregando Cliente:", self.model.get_path(iter), ", ID:", client_id)
    print("   Name:", client_name)

  def __add_port (self, new_graph_version, client_id, client_name, port_id, port_name, port_flags, port_type):
    in_client = search_tree(self.model, self.model.iter_children(None), match_func_tree, (0, client_id))
    child_iter = self.model.append(in_client)
    self.model.set(child_iter,
              0, port_id,
              1, port_name)
    self.ports.append([client_id, port_id, port_name, port_flags, port_type])
    print("--> Puerto:", self.model.get_path(in_client), ", Port ID: ", port_id)
    print("      Port Name: ", port_name, ["output", "input"][port_flags % 2], ["Audio", "MIDI"][port_type])

  def __del_client(self, new_graph_version, client_id, client_name):
    dissapeared_client = search_tree(self.model, self.model.iter_children(None), match_func_tree, (0, client_id))
    self.model.remove(dissapeared_client)
    i = 0
    while i < len(self.clients):
      if self.clients[i][0] == client_id:
        del self.clients[i]
        break
      i += 1
    print("Ha desaparecido el cliente:", client_name)

  def __del_port(self, new_graph_version, client_id, client_name, port_id, port_name):
    in_client = search_tree(self.model, self.model.iter_children(None), match_func_tree, (0, client_id))
    if in_client:
      dissapeared_port = search_tree(self.model, self.model.iter_children(in_client), match_func_tree, (0, port_id))
      self.model.remove(dissapeared_port)
    i = 0
    while i < len(self.ports):
      if self.ports[i][1] == port_id:
        del self.ports[i]
        break
      i += 1
    print("Ha desaparecido el puerto:", port_name)

  def printMSJ(self, widget):
    treeselection = self.treeView.get_selection()
    (sel_model, sel_iter) = treeselection.get_selected()
    seleccion = self.model.get_value(sel_iter, 1)
    print("Hola Mundo seleccionando:", seleccion)

####################################
###          Funciones           ###
####################################
def match_func_tree(model, iter, data):
  column, key = data # data es una tupla que contiene número de columna, clave (key)
  value = model.get_value(iter, column)
  return value == key
def search_tree(model, iter, func, data, include_children = False):
  while iter:
    if func(model, iter, data):
      return iter
    if include_children:
      result = search(model, model.iter_children(iter), func, data)
      if result: return result
    iter = model.iter_next(iter)
  return None


win = MainWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()