class SpreadLogMonitor(QtWidgets.QTextEdit):
"""
Monitor for log data.
"""
signal = QtCore.pyqtSignal(Event)
def __init__(self, main_engine: MainEngine, event_engine: EventEngine):
""""""
super().__init__()
self.main_engine = main_engine
self.event_engine = event_engine
self.init_ui()
self.register_event()
def init_ui(self):
""""""
self.setReadOnly(True)
def register_event(self):
""""""
self.signal.connect(self.process_log_event)
self.event_engine.register(EVENT_SPREAD_LOG, self.signal.emit)
def process_log_event(self, event: Event):
""""""
log = event.data
msg = f"{log.time.strftime('%H:%M:%S')}\t{log.msg}"
self.append(msg)
class SpreadStrategyMonitor(QtWidgets.QWidget):
""""""
signal_strategy = QtCore.pyqtSignal(Event)
def __init__(self, spread_engine: SpreadEngine):
super().__init__()
self.strategy_engine = spread_engine.strategy_engine
self.main_engine = spread_engine.main_engine
self.event_engine = spread_engine.event_engine
self.managers = {}
self.init_ui()
self.register_event()
def init_ui(self):
""""""
self.scroll_layout = QtWidgets.QVBoxLayout()
self.scroll_layout.addStretch()
scroll_widget = QtWidgets.QWidget()
scroll_widget.setLayout(self.scroll_layout)
scroll_area = QtWidgets.QScrollArea()
scroll_area.setWidgetResizable(True)
scroll_area.setWidget(scroll_widget)
vbox = QtWidgets.QVBoxLayout()
vbox.addWidget(scroll_area)
self.setLayout(vbox)
def register_event(self):
""""""
self.signal_strategy.connect(self.process_strategy_event)
self.event_engine.register(EVENT_SPREAD_STRATEGY,
self.signal_strategy.emit)
def process_strategy_event(self, event):
"""
Update strategy status onto its monitor.
"""
data = event.data
strategy_name = data["strategy_name"]
if strategy_name in self.managers:
manager = self.managers[strategy_name]
manager.update_data(data)
else:
manager = SpreadStrategyWidget(self, self.strategy_engine, data)
self.scroll_layout.insertWidget(0, manager)
self.managers[strategy_name] = manager
def remove_strategy(self, strategy_name):
""""""
manager = self.managers.pop(strategy_name)
manager.deleteLater()