class Mainloop(QObject):
ready = pyqtSignal(bool, dict)
stopped = pyqtSignal()
report = pyqtSignal(int, str)
state = pyqtSignal(int, str)
notify = pyqtSignal(str, str)
def __init__(self, parent=None):
super(Mainloop, self).__init__(parent)
self.queue = None
self.thread = None
self.db = None
def spawn_device_greenlets(self, terminal, devices):
return [spawn(device_loop, terminal, self, addr) for addr in devices]
def _mainloop(self):
terminal = Terminal()
if not terminal.is_open():
self.notify.emit(u'Ошибка', u'Нет связи с концентратором')
self.ready.emit(False, {})
return
if self.db is None:
self.db = DB(notify=lambda title, msg: self.notify.emit(title, msg))
titles = self.db.get_terminals()
devices = titles.keys()
if not devices:
self.notify.emit(u'Ошибка', u'Нет информации о терминалах')
self.ready.emit(False, {})
return
self.queue = Queue()
self.ready.emit(True, titles)
greenlets = self.spawn_device_greenlets(terminal, devices)
while True:
command = self.queue.get()
if callable(command):
command(terminal)
else:
[greenlet.kill() for greenlet in greenlets]
break
terminal.close()
self.queue = None
self.stopped.emit()
def start(self):
self.thread = Thread(target=self._mainloop)
self.thread.start()
def stop(self, block=False):
if self.queue:
self.queue.put(None)
if block:
self.thread.join()
def test_display(self):
test_message = u'Тестовое сообщение'
self.queue.put(lambda terminal: TerminalMessage(test_message).set(terminal, 0xFF, 5))
def update_config(self, addr=0xFF):
self.queue.put(lambda terminal: TerminalTime().set(terminal, addr))
self.queue.put(lambda terminal: TerminalStrings(self.db).set(terminal, addr))
self.queue.put(lambda terminal: TerminalCounters(self.db).set(terminal, addr))
def terminal_open(self, addr):
self.queue.put(lambda terminal: TerminalState('man', 'open').set(terminal, addr, self.db))
def terminal_close(self, addr):
self.queue.put(lambda terminal: TerminalState('man', 'close').set(terminal, addr, self.db))
