mirror of
https://git.mirrors.martin98.com/https://github.com/Ultimaker/Cura
synced 2025-04-22 05:39:37 +08:00
42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
from typing import Optional
|
|
|
|
from PyQt6.QtCore import QObject, pyqtSignal, pyqtProperty
|
|
|
|
from UM.TaskManagement.HttpRequestManager import HttpRequestManager
|
|
|
|
|
|
class ConnectionStatus(QObject):
|
|
"""Provides an estimation of whether internet is reachable
|
|
|
|
Estimation is updated with every request through HttpRequestManager.
|
|
Acts as a proxy to HttpRequestManager.internetReachableChanged without
|
|
exposing the HttpRequestManager in its entirety.
|
|
"""
|
|
|
|
__instance = None # type: Optional[ConnectionStatus]
|
|
|
|
internetReachableChanged = pyqtSignal()
|
|
|
|
@classmethod
|
|
def getInstance(cls, *args, **kwargs) -> "ConnectionStatus":
|
|
if cls.__instance is None:
|
|
cls.__instance = cls(*args, **kwargs)
|
|
return cls.__instance
|
|
|
|
def __init__(self, parent: Optional["QObject"] = None) -> None:
|
|
super().__init__(parent)
|
|
|
|
manager = HttpRequestManager.getInstance()
|
|
self._is_internet_reachable = manager.isInternetReachable # type: bool
|
|
manager.internetReachableChanged.connect(self._onInternetReachableChanged)
|
|
|
|
@pyqtProperty(bool, notify = internetReachableChanged)
|
|
def isInternetReachable(self) -> bool:
|
|
return self._is_internet_reachable
|
|
|
|
def _onInternetReachableChanged(self, reachable: bool):
|
|
if reachable != self._is_internet_reachable:
|
|
self._is_internet_reachable = reachable
|
|
self.internetReachableChanged.emit()
|
|
|