Don't require VariantManager any more from CuraStackBuilder

We now use the new container tree structure there.

Contributes to issue CURA-6600.

cura/Machines/MachineNode.py

@@ -20,6 +20,7 @@ class MachineNode(ContainerNode):
         super().__init__(container_id)
         self.variants = {}  # type: Dict[str, VariantNode] # mapping variant names to their nodes.
         container_registry = ContainerRegistry.getInstance()
+
         my_metadata = container_registry.findContainersMetadata(id = container_id)[0]
         # Some of the metadata is cached upon construction here.
         # ONLY DO THAT FOR METADATA THAT DOESN'T CHANGE DURING RUNTIME!
@@ -28,6 +29,8 @@ class MachineNode(ContainerNode):
         self.has_machine_quality = parseBool(my_metadata.get("has_machine_quality", "false"))
         self.quality_definition = my_metadata.get("quality_definition", container_id)
         self.exclude_materials = my_metadata.get("exclude_materials", [])
+        self.preferred_variant_name = my_metadata.get("preferred_variant_name", "")
+
         container_registry.containerAdded.connect(self._variantAdded)
         self._loadAll()
 

cura/Settings/CuraStackBuilder.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2018 Ultimaker B.V.
+# Copyright (c) 2019 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
 from typing import Optional
@@ -8,6 +8,7 @@ from UM.Logger import Logger
 from UM.Settings.Interfaces import DefinitionContainerInterface
 from UM.Settings.InstanceContainer import InstanceContainer
 
+from cura.Machines.ContainerTree import ContainerTree
 from cura.Machines.VariantType import VariantType
 from .GlobalStack import GlobalStack
 from .ExtruderStack import ExtruderStack
@@ -38,14 +39,6 @@ class CuraStackBuilder:
 
         machine_definition = definitions[0]
 
-        # get variant container for the global stack
-        global_variant_container = application.empty_variant_container
-        global_variant_node = variant_manager.getDefaultVariantNode(machine_definition, VariantType.BUILD_PLATE)
-        if global_variant_node:
-            global_variant_container = global_variant_node.getContainer()
-        if not global_variant_container:
-            global_variant_container = application.empty_variant_container
-
         generated_name = registry.createUniqueName("machine", "", name, machine_definition.getName())
         # Make sure the new name does not collide with any definition or (quality) profile
         # createUniqueName() only looks at other stacks, but not at definitions or quality profiles
@@ -56,7 +49,7 @@ class CuraStackBuilder:
         new_global_stack = cls.createGlobalStack(
             new_stack_id = generated_name,
             definition = machine_definition,
-            variant_container = global_variant_container,
+            variant_container = application.empty_variant_container,
             material_container = application.empty_material_container,
             quality_container = application.empty_quality_container,
         )
@@ -108,16 +101,15 @@ class CuraStackBuilder:
     def createExtruderStackWithDefaultSetup(cls, global_stack: "GlobalStack", extruder_position: int) -> None:
         from cura.CuraApplication import CuraApplication
         application = CuraApplication.getInstance()
-        variant_manager = application.getVariantManager()
         material_manager = application.getMaterialManager()
         registry = application.getContainerRegistry()
 
         # get variant container for extruders
         extruder_variant_container = application.empty_variant_container
-        extruder_variant_node = variant_manager.getDefaultVariantNode(global_stack.definition, VariantType.NOZZLE,
-                                                                      global_stack = global_stack)
+        machine_node = ContainerTree.getInstance().machines[global_stack.definition.getId()]
+        extruder_variant_node = machine_node.variants.get(machine_node.preferred_variant_name)
         extruder_variant_name = None
-        if extruder_variant_node:
+        if extruder_variant_node is not None:
             extruder_variant_container = extruder_variant_node.getContainer()
             if not extruder_variant_container:
                 extruder_variant_container = application.empty_variant_container