Fix typing.

part CURA-6600

cura/Settings/ContainerManager.py

@@ -83,6 +83,9 @@ class ContainerManager(QObject):
     #  Update: In order for QML to use objects and sub objects, those (sub) objects must all be QObject. Is that what we want?
     @pyqtSlot("QVariant", str, str)
     def setContainerMetaDataEntry(self, container_node: "ContainerNode", entry_name: str, entry_value: str) -> bool:
+        if container_node.container is None:
+            Logger.log("w", "Container node {0} doesn't have a container.".format(container_node.container_id))
+            return False
         root_material_id = container_node.container.getMetaDataEntry("base_file", "")
         if cura.CuraApplication.CuraApplication.getInstance().getContainerRegistry().isReadOnly(root_material_id):
             Logger.log("w", "Cannot set metadata of read-only container %s.", root_material_id)
@@ -341,6 +344,9 @@ class ContainerManager(QObject):
     @pyqtSlot("QVariant")
     def unlinkMaterial(self, material_node: "MaterialNode") -> None:
         # Get the material group
+        if material_node.container is None:
+            Logger.log("w", "Material node {0} doesn't have a container.".format(material_node.container_id))
+            return
         material_group = MaterialManager.getInstance().getMaterialGroup(material_node.container.getMetaDataEntry("base_file", ""))
 
         if material_group is None:

cura/Settings/CuraContainerRegistry.py

@@ -28,6 +28,7 @@ from . import GlobalStack
 
 import cura.CuraApplication
 from cura.Settings.cura_empty_instance_containers import empty_quality_container
+from cura.Machines.ContainerTree import ContainerTree
 from cura.Machines.QualityManager import getMachineDefinitionIDForQualitySearch
 from cura.ReaderWriters.ProfileReader import NoProfileException, ProfileReader
 
@@ -386,8 +387,7 @@ class CuraContainerRegistry(ContainerRegistry):
         # Check to make sure the imported profile actually makes sense in context of the current configuration.
         # This prevents issues where importing a "draft" profile for a machine without "draft" qualities would report as
         # successfully imported but then fail to show up.
-        quality_manager = cura.CuraApplication.CuraApplication.getInstance()._quality_manager
-        quality_group_dict = quality_manager.getQualityGroupsForMachineDefinition(global_stack)
+        quality_group_dict = ContainerTree.getInstance().machines[definition_id]
         # "not_supported" profiles can be imported.
         if quality_type != empty_quality_container.getMetaDataEntry("quality_type") and quality_type not in quality_group_dict:
             return catalog.i18nc("@info:status", "Could not find a quality type {0} for the current configuration.", quality_type)

cura/Settings/MachineManager.py

@@ -24,6 +24,7 @@ from UM.Signal import postponeSignals, CompressTechnique
 
 import cura.CuraApplication  # Imported like this to prevent circular references.
 
+from cura.Machines.ContainerNode import ContainerNode
 from cura.Machines.ContainerTree import ContainerTree
 from cura.Machines.QualityManager import getMachineDefinitionIDForQualitySearch, QualityManager
 from cura.Machines.MaterialManager import MaterialManager
@@ -1185,7 +1186,7 @@ class MachineManager(QObject):
     def _setMaterial(self, position: str, material_node: Optional["MaterialNode"] = None) -> None:
         if self._global_container_stack is None:
             return
-        if material_node:
+        if material_node and material_node.container:
             material_container = material_node.container
             self._global_container_stack.extruders[position].material = material_container
             root_material_id = material_container.getMetaDataEntry("base_file", None)
@@ -1239,6 +1240,9 @@ class MachineManager(QObject):
         # The current quality type is not available so we use the preferred quality type if it's available,
         # otherwise use one of the available quality types.
         quality_type = sorted(list(available_quality_types))[0]
+        if self._global_container_stack is None:
+            Logger.log("e", "Global stack not present!")
+            return
         preferred_quality_type = self._global_container_stack.getMetaDataEntry("preferred_quality_type")
         if preferred_quality_type in available_quality_types:
             quality_type = preferred_quality_type
@@ -1549,7 +1553,7 @@ class MachineManager(QObject):
     @pyqtProperty(bool, notify = activeQualityGroupChanged)
     def hasNotSupportedQuality(self) -> bool:
         global_container_stack = cura.CuraApplication.CuraApplication.getInstance().getGlobalContainerStack()
-        return global_container_stack and global_container_stack.quality == empty_quality_container and global_container_stack.qualityChanges == empty_quality_changes_container
+        return (not global_container_stack is None) and global_container_stack.quality == empty_quality_container and global_container_stack.qualityChanges == empty_quality_changes_container
 
     def _updateUponMaterialMetadataChange(self) -> None:
         if self._global_container_stack is None: