Expose Account API to QML

This is done by adding the API as an SingletonType to Cura.

CURA-5744

cura/API/Account.py

@@ -2,7 +2,7 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 from typing import Tuple, Optional, Dict
 
-from PyQt5.QtCore.QObject import QObject, pyqtSignal, pyqtSlot, pyqtProperty
+from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot, pyqtProperty
 
 from UM.Message import Message
 from cura.OAuth2.AuthorizationService import AuthorizationService
@@ -66,12 +66,27 @@ class Account(QObject):
             self._logged_in = logged_in
             self.loginStateChanged.emit()
 
+    @pyqtSlot()
     def login(self) -> None:
         if self._logged_in:
             # Nothing to do, user already logged in.
             return
         self._authorization_service.startAuthorizationFlow()
 
+    @pyqtProperty(str, notify=loginStateChanged)
+    def userName(self):
+        user_profile = self._authorization_service.getUserProfile()
+        if not user_profile:
+            return None
+        return user_profile.username
+
+    @pyqtProperty(str, notify = loginStateChanged)
+    def profileImageUrl(self):
+        user_profile = self._authorization_service.getUserProfile()
+        if not user_profile:
+            return None
+        return user_profile.profile_image_url
+
     #   Get the profile of the logged in user
     #   @returns None if no user is logged in, a dict containing user_id, username and profile_image_url
     @pyqtProperty("QVariantMap", notify = loginStateChanged)
@@ -81,6 +96,7 @@ class Account(QObject):
             return None
         return user_profile.__dict__
 
+    @pyqtSlot()
     def logout(self) -> None:
         if not self._logged_in:
             return  # Nothing to do, user isn't logged in.

cura/API/__init__.py

@@ -1,5 +1,7 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
+from PyQt5.QtCore import QObject, pyqtProperty
+
 from UM.PluginRegistry import PluginRegistry
 from cura.API.Backups import Backups
 from cura.API.Interface import Interface
@@ -12,7 +14,7 @@ from cura.API.Account import Account
 #   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.
-class CuraAPI:
+class CuraAPI(QObject):
 
     # For now we use the same API version to be consistent.
     VERSION = PluginRegistry.APIVersion
@@ -23,4 +25,8 @@ class CuraAPI:
     # Interface API
     interface = Interface()
 
-    account = Account()
+    _account = Account()
+
+    @pyqtProperty(QObject, constant = True)
+    def account(self) -> Account:
+        return CuraAPI._account

cura/CuraApplication.py

@@ -204,6 +204,7 @@ class CuraApplication(QtApplication):
 
         self._quality_profile_drop_down_menu_model = None
         self._custom_quality_profile_drop_down_menu_model = None
+        self._cura_API = None
 
         self._physics = None
         self._volume = None
@@ -894,6 +895,12 @@ class CuraApplication(QtApplication):
             self._custom_quality_profile_drop_down_menu_model = CustomQualityProfilesDropDownMenuModel(self)
         return self._custom_quality_profile_drop_down_menu_model
 
+    def getCuraAPI(self, *args, **kwargs):
+        if self._cura_API is None:
+            from cura.API import CuraAPI
+            self._cura_API = CuraAPI()
+        return self._cura_API
+
     ##  Registers objects for the QML engine to use.
     #
     #   \param engine The QML engine.
@@ -942,6 +949,9 @@ class CuraApplication(QtApplication):
         qmlRegisterSingletonType(ContainerManager, "Cura", 1, 0, "ContainerManager", ContainerManager.getInstance)
         qmlRegisterType(SidebarCustomMenuItemsModel, "Cura", 1, 0, "SidebarCustomMenuItemsModel")
 
+        from cura.API import CuraAPI
+        qmlRegisterSingletonType(CuraAPI, "Cura", 1, 1, "API", self.getCuraAPI)
+
         # As of Qt5.7, it is necessary to get rid of any ".." in the path for the singleton to work.
         actions_url = QUrl.fromLocalFile(os.path.abspath(Resources.getPath(CuraApplication.ResourceTypes.QmlFiles, "Actions.qml")))
         qmlRegisterSingletonType(actions_url, "Cura", 1, 0, "Actions")

resources/qml/Cura.qml

@@ -8,7 +8,7 @@ import QtQuick.Layouts 1.1
 import QtQuick.Dialogs 1.2
 
 import UM 1.3 as UM
-import Cura 1.0 as Cura
+import Cura 1.1 as Cura
 
 import "Menus"
 
@@ -21,7 +21,6 @@ UM.MainWindow
     property bool showPrintMonitor: false
 
     backgroundColor: UM.Theme.getColor("viewport_background")
-
     // This connection is here to support legacy printer output devices that use the showPrintMonitor signal on Application to switch to the monitor stage
     // It should be phased out in newer plugin versions.
     Connections