from datetime import datetime

from PySide6.QtCore import QObject, Signal, Slot, Property, QTimer


class QmlTest(QObject):
 textChanged = Signal()

 def __init__(self, context=None, name="QmlTest"):
 super().__init__()
 self._text = "127.0.0.1"

 # 如果有传 context 就自动注册到 QML
 if context is not None:
 context.setContextProperty(name, self)

 # 启动定时器
 self.timer = QTimer(self)
 self.timer.timeout.connect(self.refresh)
 self.timer.start(500) # 每 2000 毫秒调用一次 refresh

 def getText(self):
 return self._text

 def setText(self, value):
 if self._text != value:
 self._text = value
 self.textChanged.emit()

 @Slot()
 def refresh(self):
 # logger.info("刷新被 QML 调用 或 定时器调用")
 self.setText(f"更新时间: {self._currentTimeString()}")

 @Slot()
 def stopRefresh(self):
 self.timer.stop()

 @Slot()
 def startRefresh(self):
 self.timer.start(500)

 def _currentTimeString(self):
 return datetime.now().strftime("%H:%M:%S")

 text = Property(str, getText, setText, notify=textChanged)