Merge remote-tracking branch 'origin/master' into WIP_kill_extruder_manager

cura/CuraApplication.py

@@ -44,6 +44,7 @@ from UM.Operations.RemoveSceneNodeOperation import RemoveSceneNodeOperation
 from UM.Operations.GroupedOperation import GroupedOperation
 from UM.Operations.SetTransformOperation import SetTransformOperation
 
+from cura.API import CuraAPI
 from cura.Arranging.Arrange import Arrange
 from cura.Arranging.ArrangeObjectsJob import ArrangeObjectsJob
 from cura.Arranging.ArrangeObjectsAllBuildPlatesJob import ArrangeObjectsAllBuildPlatesJob
@@ -61,6 +62,7 @@ from cura.Scene.CuraSceneController import CuraSceneController
 from UM.Settings.SettingDefinition import SettingDefinition, DefinitionPropertyType
 from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.Settings.SettingFunction import SettingFunction
+from cura.Settings.CuraContainerRegistry import CuraContainerRegistry
 from cura.Settings.MachineNameValidator import MachineNameValidator
 
 from cura.Machines.Models.BuildPlateModel import BuildPlateModel
@@ -206,6 +208,7 @@ class CuraApplication(QtApplication):
 
         self._quality_profile_drop_down_menu_model = None
         self._custom_quality_profile_drop_down_menu_model = None
+        self._cura_API = CuraAPI(self)
 
         self._physics = None
         self._volume = None
@@ -244,6 +247,8 @@ class CuraApplication(QtApplication):
 
         from cura.Settings.CuraContainerRegistry import CuraContainerRegistry
         self._container_registry_class = CuraContainerRegistry
+        # Redefined here in order to please the typing.
+        self._container_registry = None # type: CuraContainerRegistry
         from cura.CuraPackageManager import CuraPackageManager
         self._package_manager_class = CuraPackageManager
 
@@ -268,6 +273,9 @@ class CuraApplication(QtApplication):
                                       help = "FOR TESTING ONLY. Trigger an early crash to show the crash dialog.")
         self._cli_parser.add_argument("file", nargs = "*", help = "Files to load after starting the application.")
 
+    def getContainerRegistry(self) -> "CuraContainerRegistry":
+        return self._container_registry
+
     def parseCliOptions(self):
         super().parseCliOptions()
 
@@ -679,7 +687,7 @@ class CuraApplication(QtApplication):
 
         Logger.log("i", "Initializing quality manager")
         from cura.Machines.QualityManager import QualityManager
-        self._quality_manager = QualityManager(container_registry, parent = self)
+        self._quality_manager = QualityManager(self, parent = self)
         self._quality_manager.initialize()
 
         Logger.log("i", "Initializing machine manager")
@@ -711,6 +719,9 @@ class CuraApplication(QtApplication):
         default_visibility_profile = self._setting_visibility_presets_model.getItem(0)
         self.getPreferences().setDefault("general/visible_settings", ";".join(default_visibility_profile["settings"]))
 
+        # Initialize Cura API
+        self._cura_API.initialize()
+
         # Detect in which mode to run and execute that mode
         if self._is_headless:
             self.runWithoutGUI()
@@ -903,6 +914,9 @@ 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) -> "CuraAPI":
+        return self._cura_API
+
     ##  Registers objects for the QML engine to use.
     #
     #   \param engine The QML engine.
@@ -951,6 +965,9 @@ 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")
@@ -1590,6 +1607,11 @@ class CuraApplication(QtApplication):
         job.start()
 
     def _readMeshFinished(self, job):
+        global_container_stack = self.getGlobalContainerStack()
+        if not global_container_stack:
+            Logger.log("w", "Can't load meshes before a printer is added.")
+            return
+
         nodes = job.getResult()
         file_name = job.getFileName()
         file_name_lower = file_name.lower()
@@ -1604,7 +1626,6 @@ class CuraApplication(QtApplication):
         for node_ in DepthFirstIterator(root):
             if node_.callDecoration("isSliceable") and node_.callDecoration("getBuildPlateNumber") == target_build_plate:
                 fixed_nodes.append(node_)
-        global_container_stack = self.getGlobalContainerStack()
         machine_width = global_container_stack.getProperty("machine_width", "value")
         machine_depth = global_container_stack.getProperty("machine_depth", "value")
         arranger = Arrange.create(x = machine_width, y = machine_depth, fixed_nodes = fixed_nodes)