Cura/cura/API/__init__.py
2021-12-29 10:15:14 +01:00

78 lines
2.7 KiB
Python

# Copyright (c) 2018 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
from typing import Optional, TYPE_CHECKING
from PyQt6.QtCore import QObject, pyqtProperty
from cura.API.Backups import Backups
from cura.API.ConnectionStatus import ConnectionStatus
from cura.API.Interface import Interface
from cura.API.Account import Account
if TYPE_CHECKING:
from cura.CuraApplication import CuraApplication
class CuraAPI(QObject):
"""The official Cura API that plug-ins can use to interact with Cura.
Python does not technically prevent talking to other classes as well, but this API provides a version-safe
interface with proper deprecation warnings etc. Usage of any other methods than the ones provided in this API can
cause plug-ins to be unstable.
"""
# For now we use the same API version to be consistent.
__instance = None # type: "CuraAPI"
_application = None # type: CuraApplication
# This is done to ensure that the first time an instance is created, it's forced that the application is set.
# The main reason for this is that we want to prevent consumers of API to have a dependency on CuraApplication.
# Since the API is intended to be used by plugins, the cura application should have already created this.
def __new__(cls, application: Optional["CuraApplication"] = None):
if cls.__instance is not None:
raise RuntimeError("Tried to create singleton '{class_name}' more than once.".format(class_name = CuraAPI.__name__))
if application is None:
raise RuntimeError("Upon first time creation, the application must be set.")
instance = super(CuraAPI, cls).__new__(cls)
cls._application = application
return instance
def __init__(self, application: Optional["CuraApplication"] = None) -> None:
super().__init__(parent = CuraAPI._application)
CuraAPI.__instance = self
self._account = Account(self._application)
self._backups = Backups(self._application)
self._connectionStatus = ConnectionStatus()
# Interface API
self._interface = Interface(self._application)
def initialize(self) -> None:
self._account.initialize()
@pyqtProperty(QObject, constant = True)
def account(self) -> "Account":
"""Accounts API"""
return self._account
@pyqtProperty(QObject, constant = True)
def connectionStatus(self) -> "ConnectionStatus":
return self._connectionStatus
@property
def backups(self) -> "Backups":
"""Backups API"""
return self._backups
@property
def interface(self) -> "Interface":
"""Interface API"""
return self._interface