oscopy_ui

   1 #!/usr/bin/python
   2 from __future__ import with_statement
   3
   4 import gobject
   5 import gtk
   6 import signal
   7 import os
   8 import readline
   9 import commands
  10 import ConfigParser
  11 import dbus, dbus.service, dbus.glib
  12 from xdg import BaseDirectory
  13
  14 import oscopy
  15
  16 from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas
  17 from matplotlib.backends.backend_gtkagg import NavigationToolbar2GTKAgg as NavigationToolbar
  18 import gui
  19
  20 # Note: for crosshair, see gtk.gdk.GC / function = gtk.gdk.XOR
  21
  22 def report_error(parent, msg):
  23     dlg = gtk.MessageDialog(parent,
  24                             gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
  25                             gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, msg)
  26     dlg.set_title(parent.get_title())
  27     dlg.run()
  28     dlg.destroy()
  29
  30 class OscopyAppUI(oscopy.OscopyApp):
  31     def __init__(self, context):
  32         oscopy.OscopyApp.__init__(self, context)
  33         self._callbacks = {}
  34         self._autorefresh = True
  35
  36     def connect(self, event, func, data):
  37         if not isinstance(event, str):
  38             return
  39         if hasattr(self, 'do_'+event):
  40             self._callbacks[event] = {func: data}
  41
  42     def postcmd(self, stop, line):
  43         oscopy.OscopyApp.postcmd(self, stop, line)
  44         if not line.strip():
  45             return
  46         event = line.split()[0].strip()
  47         if len(line.split()) > 1:
  48             args = line.split(' ', 1)[1].strip()
  49         else:
  50             args = ''
  51         if self._callbacks.has_key(event):
  52             for func, data in self._callbacks[event].iteritems():
  53                 func(event, args, data)
  54         if self._autorefresh and self._current_figure is not None and\
  55                 self._current_figure.canvas is not None:
  56             self._current_figure.canvas.draw()
  57
  58     def help_refresh(self):
  59         print 'refresh FIG#|on|off|current|all'
  60         print '  on|off       toggle auto refresh of current figure'
  61         print '  current|all  refresh either current figure or all'
  62         print '  FIG#         figure to refresh'
  63         print 'without arguments refresh current figure'
  64     def do_refresh(self, args):
  65         if args == 'on':
  66             self._autorefresh = True
  67         elif args == 'off':
  68             self._autorefresh = False
  69         elif args == 'current' or args == '':
  70             if self._current_figure is not None and\
  71                     self._current_figure.canvas is not None:
  72                 self._current_figure.canvas.draw()
  73         elif args == 'all':
  74             for fig in self._ctxt.figures:
  75                 if fig.canvas is not None:
  76                     fig.canvas.draw()
  77         elif args.isdigit():
  78             fignum = int(args) - 1
  79             if fignum >= 0 and fignum < len(self._ctxt.figures):
  80                 if self._ctxt.figures[fignum].canvas is not None:
  81                     print 'refreshing'
  82                     self._ctxt.figures[fignum].canvas.draw()
  83
  84     def do_pause(self, args):
  85         print "Pause command disabled in UI"
  86
  87     def do_plot(self, line):
  88         print "Plot command disabled in UI"
  89
  90 class App(dbus.service.Object):
  91     __ui = '''<ui>
  92     <menubar name="MenuBar">
  93       <menu action="File">
  94         <menuitem action="Add file(s)..."/>
  95         <menuitem action="Update files"/>
  96         <menuitem action="Execute script..."/>
  97         <menuitem action="New Math Signal..."/>
  98         <menuitem action="Run netlister and simulate..."/>
  99         <menuitem action="Quit"/>
 100       </menu>
 101       <menu action="Windows">
 102         <menuitem action="Show terminal"/>
 103       </menu>
 104     </menubar>
 105     </ui>'''
 106
 107     def __init__(self, bus_name, object_path='/org/freedesktop/Oscopy'):
 108         dbus.service.Object.__init__(self, bus_name, object_path)
 109         self._scale_to_str = {'lin': 'Linear', 'logx': 'LogX', 'logy': 'LogY',\
 110                                   'loglog': 'Loglog'}
 111         self._windows_to_figures = {}
 112         self._fignum_to_windows = {}
 113         self._fignum_to_merge_id = {}
 114         self._current_graph = None
 115         self._current_figure = None
 116         self._term_win = None
 117         self._prompt = "oscopy-ui>"
 118         self._init_config()
 119         self._read_config()
 120
 121         self._TARGET_TYPE_SIGNAL = 10354
 122         self._from_signal_list = [("oscopy-signals", gtk.TARGET_SAME_APP,\
 123                                        self._TARGET_TYPE_SIGNAL)]
 124         self._to_figure = [("oscopy-signals", gtk.TARGET_SAME_APP,\
 125                                 self._TARGET_TYPE_SIGNAL)]
 126
 127         self._ctxt = oscopy.Context()
 128         self._app = OscopyAppUI(self._ctxt)
 129         self._app.connect('read', self._add_file, None)
 130         self._app.connect('math', self._add_file, None)
 131         self._app.connect('freeze', self._freeze, None)
 132         self._app.connect('unfreeze', self._freeze, None)
 133         self._app.connect('create', self._create, None)
 134         self._app.connect('destroy', self._destroy, None)
 135         self._app.connect('quit', lambda e, s, d: self._action_quit(None), None)
 136         self._app.connect('exit', lambda e, s, d: self._action_quit(None), None)
 137         self._store = gtk.TreeStore(gobject.TYPE_STRING, gobject.TYPE_PYOBJECT,
 138                                     gobject.TYPE_BOOLEAN)
 139         self._create_widgets()
 140         #self._app_exec('read demo/irf540.dat')
 141         #self._app_exec('read demo/ac.dat')
 142         #self._add_file('demo/res.dat')
 143
 144     SECTION = 'oscopy_ui'
 145     OPT_NETLISTER_COMMANDS = 'netlister_commands'
 146     OPT_SIMULATOR_COMMANDS = 'simulator_commands'
 147     OPT_RUN_DIRECTORY = 'run_directory'
 148
 149     #
 150     # Actions
 151     #
 152     def _action_add_file(self, action):
 153         dlg = gtk.FileChooserDialog('Add file(s)', parent=self._mainwindow,
 154                                     buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
 155                                              gtk.STOCK_OK, gtk.RESPONSE_ACCEPT))
 156         dlg.set_select_multiple(True)
 157         resp = dlg.run()
 158         if resp == gtk.RESPONSE_ACCEPT:
 159             for filename in dlg.get_filenames():
 160                 self._app_exec("read " + filename)
 161         dlg.destroy()
 162
 163     def _action_update(self, action):
 164         self._ctxt.update()
 165
 166     def _action_new_math(self, action):
 167         dlg = gtk.Dialog('New math signal', parent=self._mainwindow,
 168                          buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
 169                                   gtk.STOCK_OK, gtk.RESPONSE_ACCEPT))
 170
 171         # Label and entry
 172         hbox = gtk.HBox()
 173         label = gtk.Label('Expression:')
 174         hbox.pack_start(label)
 175         entry = gtk.Entry()
 176         hbox.pack_start(entry)
 177         dlg.vbox.pack_start(hbox)
 178
 179         dlg.show_all()
 180         resp = dlg.run()
 181         if resp == gtk.RESPONSE_ACCEPT:
 182             expr = entry.get_text()
 183             self._app_exec('%s' % expr)
 184
 185         dlg.destroy()
 186
 187     def _action_show_terminal(self, action):
 188         if self._term_win.flags() & gtk.VISIBLE:
 189             self._term_win.hide()
 190         else:
 191             self._term_win.show()
 192
 193     def _action_execute_script(self, action):
 194         dlg = gtk.FileChooserDialog('Execute script', parent=self._mainwindow,
 195                                     buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_REJECT,
 196                                              gtk.STOCK_OK, gtk.RESPONSE_ACCEPT))
 197         resp = dlg.run()
 198         filename = dlg.get_filename()
 199         dlg.destroy()
 200         if resp == gtk.RESPONSE_ACCEPT:
 201             self._app_exec("exec " + filename)
 202
 203     def _action_netlist_and_simulate(self, action):
 204         dlg = gui.dialogs.Run_Netlister_and_Simulate_Dialog()
 205         dlg.display(self._actions)
 206         actions = dlg.run()
 207         if actions is None:
 208             return
 209         self._actions = actions
 210         run_dir = actions['run_from']
 211         if actions['run_netlister'][0]:
 212             if not self._run_ext_command(actions['run_netlister'][1][0], run_dir):
 213                 return
 214         if actions['run_simulator'][0]:
 215             if not self._run_ext_command(actions['run_simulator'][1][0], run_dir):
 216                 return
 217         if actions['update']:
 218             self._ctxt.update()
 219
 220     def _action_quit(self, action):
 221         self._write_config()
 222         readline.write_history_file(self.hist_file)
 223         main_loop.quit()
 224
 225     def _action_figure(self, action, w, fignum):
 226         if not (w.flags() & gtk.VISIBLE):
 227             w.show()
 228         else:
 229             w.window.show()
 230         self._app_exec('select %d-1' % fignum)
 231
 232     #
 233     # UI Creation functions
 234     #
 235     def _create_menubar(self):
 236         # tuple format:
 237         # (name, stock-id, label, accelerator, tooltip, callback)
 238         actions = [
 239             ('File', None, '_File'),
 240             ('Add file(s)...', gtk.STOCK_ADD, '_Add file(s)...', None, None,
 241              self._action_add_file),
 242             ('Update files', gtk.STOCK_REFRESH, '_Update', None, None,
 243              self._action_update),
 244             ('Execute script...', gtk.STOCK_MEDIA_PLAY, '_Execute script...',
 245              None, None, self._action_execute_script),
 246             ("New Math Signal...", gtk.STOCK_NEW, '_New Math Signal', None,
 247              None, self._action_new_math),
 248             ("Run netlister and simulate...", gtk.STOCK_MEDIA_FORWARD,\
 249                  "_Run netlister and simulate...", None, None,\
 250                  self._action_netlist_and_simulate),
 251             ('Windows', None, '_Windows'),
 252             ('Quit', gtk.STOCK_QUIT, '_Quit', None, None,
 253              self._action_quit),
 254             ]
 255
 256         actiongroup = self._actiongroup = gtk.ActionGroup('App')
 257         actiongroup.add_actions(actions)
 258
 259         ta = gtk.ToggleAction('Show terminal', '_Show terminal', None, None)
 260         ta.set_active(True)
 261         ta.connect('activate', self._action_show_terminal)
 262         actiongroup.add_action(ta)
 263
 264         uimanager = self._uimanager = gtk.UIManager()
 265         uimanager.add_ui_from_string(self.__ui)
 266         uimanager.insert_action_group(actiongroup, 0)
 267         return uimanager.get_accel_group(), uimanager.get_widget('/MenuBar')
 268
 269     def _create_treeview(self):
 270         celltext = gtk.CellRendererText()
 271         col = gtk.TreeViewColumn('Signal', celltext, text=0)
 272         tv = gtk.TreeView()
 273         col.set_cell_data_func(celltext, self._reader_name_in_bold)
 274         col.set_expand(True)
 275         tv.append_column(col)
 276         tv.set_model(self._store)
 277         tv.connect('row-activated', self._row_activated)
 278         tv.connect('drag_data_get', self._drag_data_get_cb)
 279         tv.drag_source_set(gtk.gdk.BUTTON1_MASK,\
 280                                self._from_signal_list,\
 281                                gtk.gdk.ACTION_COPY)
 282         self._togglecell = gtk.CellRendererToggle()
 283         self._togglecell.set_property('activatable', True)
 284         self._togglecell.connect('toggled', self._cell_toggled, None)
 285         colfreeze = gtk.TreeViewColumn('Freeze', self._togglecell)
 286         colfreeze.add_attribute(self._togglecell, 'active', 2)
 287         tv.append_column(colfreeze)
 288         tv.get_selection().set_mode(gtk.SELECTION_MULTIPLE)
 289         return tv
 290
 291     def _reader_name_in_bold(self, column, cell, model, iter, data=None):
 292         if len(model.get_path(iter)) == 1:
 293             cell.set_property('markup', "<b>" + model.get_value(iter, 0) +\
 294                                   "</b>")
 295         else:
 296             cell.set_property('text', model.get_value(iter, 0))
 297
 298     def _create_widgets(self):
 299         accel_group, self._menubar = self._create_menubar()
 300         self._treeview = self._create_treeview()
 301         self._create_terminal_window()
 302
 303         sw = gtk.ScrolledWindow()
 304         sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
 305         sw.add(self._treeview)
 306
 307         vbox = gtk.VBox()
 308         vbox.pack_start(self._menubar, False)
 309         vbox.pack_start(sw)
 310
 311         w = self._mainwindow = gtk.Window(gtk.WINDOW_TOPLEVEL)
 312         w.set_title('Oscopy GUI')
 313         w.add(vbox)
 314         w.add_accel_group(accel_group)
 315         w.connect('destroy', lambda *x: self._action_quit(None))
 316         w.set_default_size(400, 300)
 317         w.show_all()
 318
 319     def _create_terminal_window(self):
 320         if self._term_win is None:
 321             self._term_win = gui.dialogs.TerminalWindow(self._prompt,
 322                                                         self._app.intro,
 323                                                         self.hist_file,
 324                                                         self._app_exec)
 325             self._term_win.create()
 326             self._term_win.connect('delete-event', lambda w, e: w.hide() or True)
 327         if not (self._term_win.flags() & gtk.VISIBLE):
 328             self._term_win.show_all()
 329
 330     def _create_figure_popup_menu(self, figure, graph):
 331         figmenu = gui.menus.FigureMenu()
 332         return figmenu.create_menu(self._store, figure, graph, self._app_exec)
 333
 334     #
 335     # Event-triggered functions
 336     #
 337     def _treeview_button_press(self, widget, event):
 338         if event.button == 3:
 339             tv = widget
 340             path, tvc, x, y = tv.get_path_at_pos(int(event.x), int(event.y))
 341             if len(path) == 1:
 342                 return
 343             tv.set_cursor(path)
 344             row = self._store[path]
 345             signals = {row[0]: row[1]}
 346             menu = self._create_treeview_popup_menu(signals, path)
 347             menu.show_all()
 348             menu.popup(None, None, None, event.button, event.time)
 349
 350     def _button_press(self, event):
 351         if event.button == 3:
 352             menu = self._create_figure_popup_menu(event.canvas.figure, event.inaxes)
 353             menu.show_all()
 354             menu.popup(None, None, None, event.button, event.guiEvent.time)
 355
 356     #TODO: _windows_to_figures consistency...
 357     # think of a better way to map events to Figure objects
 358     def _row_activated(self, widget, path, col):
 359         if len(path) == 1:
 360             return
 361
 362         row = self._store[path]
 363         self._app_exec('create %s' % row[0])
 364
 365     def _axes_enter(self, event):
 366         self._figure_enter(event)
 367         self._current_graph = event.inaxes
 368         axes_num = event.canvas.figure.axes.index(event.inaxes) + 1
 369         fig_num = self._ctxt.figures.index(self._current_figure) + 1
 370         self._app_exec('select %d-%d' % (fig_num, axes_num))
 371
 372     def _axes_leave(self, event):
 373         # Unused for better user interaction
 374 #        self._current_graph = None
 375         pass
 376
 377     def _figure_enter(self, event):
 378         self._current_figure = event.canvas.figure
 379         if hasattr(event, 'inaxes') and event.inaxes is not None:
 380             axes_num = event.canvas.figure.axes.index(event.inaxes) + 1
 381         else:
 382             axes_num = 1
 383         fig_num = self._ctxt.figures.index(self._current_figure) + 1
 384         self._app_exec('select %d-%d' % (fig_num, axes_num))
 385
 386     def _figure_leave(self, event):
 387 #        self._current_figure = None
 388         pass
 389
 390     def _cell_toggled(self, cellrenderer, path, data):
 391         if len(path) == 3:
 392             # Single signal
 393             if self._store[path][1].freeze:
 394                 cmd = 'unfreeze'
 395             else:
 396                 cmd = 'freeze'
 397             self._app_exec('%s %s' % (cmd, self._store[path][0]))
 398         elif len(path) == 1:
 399             # Whole reader
 400             parent = self._store.get_iter(path)
 401             freeze = not self._store.get_value(parent, 2)
 402             if self._store[path][2]:
 403                 cmd = 'unfreeze'
 404             else:
 405                 cmd = 'freeze'
 406             self._store.set_value(parent, 2, freeze)
 407             iter = self._store.iter_children(parent)
 408             while iter:
 409                 self._app_exec('%s %s' % (cmd, self._store.get_value(iter, 0)))
 410                 iter = self._store.iter_next(iter)
 411
 412     #
 413     # Callbacks for App
 414     #
 415     def _create(self, event, signals, data=None):
 416         fig = self._ctxt.figures[len(self._ctxt.figures) - 1]
 417         fignum = len(self._ctxt.figures)
 418
 419         w = gtk.Window()
 420         self._windows_to_figures[w] = fig
 421         self._fignum_to_windows[fignum] = w
 422         w.set_title('Figure %d' % fignum)
 423         vbox = gtk.VBox()
 424         w.add(vbox)
 425         canvas = FigureCanvas(fig)
 426         canvas.mpl_connect('button_press_event', self._button_press)
 427         canvas.mpl_connect('axes_enter_event', self._axes_enter)
 428         canvas.mpl_connect('axes_leave_event', self._axes_leave)
 429         canvas.mpl_connect('figure_enter_event', self._figure_enter)
 430         canvas.mpl_connect('figure_leave_event', self._figure_leave)
 431         w.connect("drag_data_received", self._drag_data_received_cb)
 432         w.connect('delete-event', lambda w, e: w.hide() or True)
 433         w.drag_dest_set(gtk.DEST_DEFAULT_MOTION |\
 434                                  gtk.DEST_DEFAULT_HIGHLIGHT |\
 435                                  gtk.DEST_DEFAULT_DROP,
 436                              self._to_figure, gtk.gdk.ACTION_COPY)
 437         vbox.pack_start(canvas)
 438         toolbar = NavigationToolbar(canvas, w)
 439         vbox.pack_start(toolbar, False, False)
 440         w.resize(400, 300)
 441         w.show_all()
 442
 443         # Add it to the 'Windows' menu
 444         actions = [('Figure %d' % fignum, None, 'Figure %d' % fignum,
 445                     None, None, self._action_figure)]
 446         self._actiongroup.add_actions(actions, (w, fignum))
 447         ui = "<ui>\
 448         <menubar name=\"MenuBar\">\
 449           <menu action=\"Windows\">\
 450             <menuitem action=\"Figure %d\"/>\
 451           </menu>\
 452         </menubar>\
 453         </ui>" % fignum
 454         merge_id = self._uimanager.add_ui_from_string(ui)
 455         self._fignum_to_merge_id[fignum] = merge_id
 456         self._app_exec('select %d-1' % fignum)
 457
 458     def _destroy(self, event, num, data=None):
 459         if not num.isdigit() or int(num) > len(self._ctxt.figures):
 460             return
 461         else:
 462             fignum = int(num)
 463         action = self._uimanager.get_action('/MenuBar/Windows/Figure %d' %
 464                                             fignum)
 465         if action is not None:
 466             self._actiongroup.remove_action(action)
 467             self._uimanager.remove_ui(self._fignum_to_merge_id[fignum])
 468             self._fignum_to_windows[fignum].destroy()
 469
 470     # Search algorithm from pygtk tutorial
 471     def _match_func(self, row, data):
 472         column, key = data
 473         return row[column] == key
 474
 475     def _search(self, rows, func, data):
 476         if not rows: return None
 477         for row in rows:
 478             if func(row, data):
 479                 return row
 480             result = self._search(row.iterchildren(), func, data)
 481             if result: return result
 482         return None
 483
 484     def _freeze(self, event, signals, data=None):
 485         for signal in signals.split(','):
 486             match_row = self._search(self._store, self._match_func,\
 487                                          (0, signal.strip()))
 488             if match_row is not None:
 489                 match_row[2] = match_row[1].freeze
 490                 parent = self._store.iter_parent(match_row.iter)
 491                 iter = self._store.iter_children(parent)
 492                 freeze = match_row[2]
 493                 while iter:
 494                     if not self._store.get_value(iter, 2) == freeze:
 495                         break
 496                     iter = self._store.iter_next(iter)
 497                 if iter == None:
 498                     # All row at the same freeze value,
 499                     # set freeze for the reader
 500                     self._store.set_value(parent, 2, freeze)
 501                 else:
 502                     # Set reader freeze to false
 503                     self._store.set_value(parent, 2, False)
 504
 505     def _add_file(self, event, filename, data=None):
 506         it = self._store.append(None, (filename.strip(), None, False))
 507         for name, sig in self._ctxt.readers[filename.strip()]\
 508                 .signals.iteritems():
 509             self._store.append(it, (name, sig, sig.freeze))
 510
 511     #
 512     # Callbacks for drag and drop
 513     #
 514     def _drag_data_get_cb(self, widget, drag_context, selection, target_type,\
 515                               time):
 516         if target_type == self._TARGET_TYPE_SIGNAL:
 517             tv = widget
 518             sel = tv.get_selection()
 519             (model, pathlist) = sel.get_selected_rows()
 520             iter = self._store.get_iter(pathlist[0])
 521             data = " ".join(map(lambda x:self._store[x][1].name, pathlist))
 522             selection.set(selection.target, 8, data)
 523             # The multiple selection do work, but how to select signals
 524             # that are not neighbours in the list? Ctrl+left do not do
 525             # anything, neither alt+left or shift+left!
 526
 527     def _drag_data_received_cb(self, widget, drag_context, x, y, selection,\
 528                                    target_type, time):
 529         if target_type == self._TARGET_TYPE_SIGNAL:
 530             if self._current_graph is not None:
 531                 signals = {}
 532                 for name in selection.data.split():
 533                     signals[name] = self._ctxt.signals[name]
 534                 self._current_graph.insert(signals)
 535                 if self._current_figure.canvas is not None:
 536                     self._current_figure.canvas.draw()
 537
 538     #
 539     # Configuration-file related functions
 540     #
 541     def _init_config(self):
 542         # initialize configuration stuff
 543         path = BaseDirectory.load_first_config('oscopy')
 544         self.config_file = os.path.join(path, 'gui')
 545         self.hist_file = os.path.join(path, 'history')
 546         section = App.SECTION
 547         self.config = ConfigParser.RawConfigParser()
 548         self.config.add_section(section)
 549         # defaults
 550         self.config.set(section, App.OPT_NETLISTER_COMMANDS, '')
 551         self.config.set(section, App.OPT_SIMULATOR_COMMANDS, '')
 552         self.config.set(section, App.OPT_RUN_DIRECTORY, '.')
 553
 554     def _sanitize_list(self, lst):
 555         return filter(lambda x: len(x) > 0, map(lambda x: x.strip(), lst))
 556
 557     def _actions_from_config(self, config):
 558         section = App.SECTION
 559         netlister_commands = config.get(section, App.OPT_NETLISTER_COMMANDS)
 560         netlister_commands = self._sanitize_list(netlister_commands.split(';'))
 561         simulator_commands = config.get(section, App.OPT_SIMULATOR_COMMANDS)
 562         simulator_commands = self._sanitize_list(simulator_commands.split(';'))
 563         actions = {
 564             'run_netlister': (True, netlister_commands),
 565             'run_simulator': (True, simulator_commands),
 566             'update': True,
 567             'run_from': config.get(section, App.OPT_RUN_DIRECTORY)}
 568         return actions
 569
 570     def _actions_to_config(self, actions, config):
 571         section = App.SECTION
 572         netlister_commands = ';'.join(actions['run_netlister'][1])
 573         simulator_commands = ';'.join(actions['run_simulator'][1])
 574         config.set(section, App.OPT_NETLISTER_COMMANDS, netlister_commands)
 575         config.set(section, App.OPT_SIMULATOR_COMMANDS, simulator_commands)
 576         config.set(section, App.OPT_RUN_DIRECTORY, actions['run_from'])
 577
 578     def _read_config(self):
 579         self.config.read(self.config_file)
 580         self._actions = self._actions_from_config(self.config)
 581
 582     def _write_config(self):
 583         self._actions_to_config(self._actions, self.config)
 584         with open(self.config_file, 'w') as f:
 585             self.config.write(f)
 586
 587     # DBus routines
 588     @dbus.service.method('org.freedesktop.OscopyIFace')
 589     def dbus_update(self):
 590         gobject.idle_add(self._activate_net_and_sim)
 591
 592     @dbus.service.method('org.freedesktop.OscopyIFace')
 593     def dbus_running(self):
 594         return
 595
 596     # Misc functions
 597     def update_from_usr1(self):
 598         self._ctxt.update()
 599
 600     def update_from_usr2(self):
 601         gobject.idle_add(self._activate_net_and_sim)
 602
 603     def _activate_net_and_sim(self):
 604         if self._actiongroup is not None:
 605             action = self._actiongroup.get_action("Run netlister and simulate...")
 606             action.activate()
 607
 608     def _run_ext_command(self, cmd, run_dir):
 609         old_dir = os.getcwd()
 610         os.chdir(run_dir)
 611         try:
 612             status, output = commands.getstatusoutput(cmd)
 613             if status:
 614                 msg = "Executing command '%s' failed." % cmd
 615                 report_error(self._mainwindow, msg)
 616             return status == 0
 617         finally:
 618             os.chdir(old_dir)
 619
 620     def _app_exec(self, line):
 621         line = self._app.precmd(line)
 622         stop = self._app.onecmd(line)
 623         self._app.postcmd(stop, line)
 624
 625 def usr1_handler(signum, frame):
 626     app.update_from_usr1()
 627
 628 def usr2_handler(signum, frame):
 629     app.update_from_usr2()
 630
 631 if __name__ == '__main__':
 632     session_bus = dbus.SessionBus()
 633     bus_name = dbus.service.BusName('org.freedesktop.Oscopy', bus=session_bus)
 634     app = App(bus_name)
 635     main_loop = gobject.MainLoop()
 636     signal.signal(signal.SIGUSR1, usr1_handler)
 637     signal.signal(signal.SIGUSR2, usr2_handler)
 638     main_loop.run()