Move VariantType to VariantType.py

Less circular dependencies for imports.

cura/Machines/Models/BuildPlateModel.py

@@ -8,7 +8,7 @@ from UM.Logger import Logger
 from UM.Qt.ListModel import ListModel
 from UM.Util import parseBool
 
-from cura.Machines.VariantManager import VariantType
+from cura.Machines.VariantType import VariantType
 
 
 class BuildPlateModel(ListModel):

cura/Machines/Models/NozzleModel.py

@@ -8,6 +8,8 @@ from UM.Logger import Logger
 from UM.Qt.ListModel import ListModel
 from UM.Util import parseBool
 
+from cura.Machines.VariantType import VariantType
+
 
 class NozzleModel(ListModel):
     IdRole = Qt.UserRole + 1
@@ -43,7 +45,6 @@ class NozzleModel(ListModel):
             self.setItems([])
             return
 
-        from cura.Machines.VariantManager import VariantType
         variant_node_dict = self._variant_manager.getVariantNodes(global_stack, VariantType.NOZZLE)
         if not variant_node_dict:
             self.setItems([])

cura/Machines/VariantManager.py

@@ -1,7 +1,6 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
-from enum import Enum
 from collections import OrderedDict
 from typing import Optional, TYPE_CHECKING
 
@@ -11,20 +10,13 @@ from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.Util import parseBool
 
 from cura.Machines.ContainerNode import ContainerNode
+from cura.Machines.VariantType import VariantType, ALL_VARIANT_TYPES
 from cura.Settings.GlobalStack import GlobalStack
 
 if TYPE_CHECKING:
     from UM.Settings.DefinitionContainer import DefinitionContainer
 
 
-class VariantType(Enum):
-    BUILD_PLATE = "buildplate"
-    NOZZLE = "nozzle"
-
-
-ALL_VARIANT_TYPES = (VariantType.BUILD_PLATE, VariantType.NOZZLE)
-
-
 #
 # VariantManager is THE place to look for a specific variant. It maintains two variant lookup tables with the following
 # structure:

cura/Machines/VariantType.py

@@ -0,0 +1,15 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from enum import Enum
+
+
+class VariantType(Enum):
+    BUILD_PLATE = "buildplate"
+    NOZZLE = "nozzle"
+
+
+ALL_VARIANT_TYPES = (VariantType.BUILD_PLATE, VariantType.NOZZLE)
+
+
+__all__ = ["VariantType", "ALL_VARIANT_TYPES"]

cura/Settings/CuraStackBuilder.py

@@ -8,7 +8,7 @@ from UM.Logger import Logger
 from UM.Settings.Interfaces import DefinitionContainerInterface
 from UM.Settings.InstanceContainer import InstanceContainer
 
-from cura.Machines.VariantManager import VariantType
+from cura.Machines.VariantType import VariantType
 from .GlobalStack import GlobalStack
 from .ExtruderStack import ExtruderStack
 

plugins/3MFReader/ThreeMFWorkspaceReader.py

@@ -24,6 +24,7 @@ from UM.MimeTypeDatabase import MimeTypeDatabase, MimeType
 from UM.Job import Job
 from UM.Preferences import Preferences
 
+from cura.Machines.VariantType import VariantType
 from cura.Settings.CuraStackBuilder import CuraStackBuilder
 from cura.Settings.ExtruderStack import ExtruderStack
 from cura.Settings.GlobalStack import GlobalStack
@@ -889,7 +890,6 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
             parser = self._machine_info.variant_info.parser
             variant_name = parser["general"]["name"]
 
-            from cura.Machines.VariantManager import VariantType
             variant_type = VariantType.BUILD_PLATE
 
             node = variant_manager.getVariantNode(global_stack.definition.getId(), variant_name, variant_type)
@@ -905,7 +905,6 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
             parser = extruder_info.variant_info.parser
 
             variant_name = parser["general"]["name"]
-            from cura.Machines.VariantManager import VariantType
             variant_type = VariantType.NOZZLE
 
             node = variant_manager.getVariantNode(global_stack.definition.getId(), variant_name, variant_type)

plugins/XmlMaterialProfile/XmlMaterialProfile.py

@@ -19,8 +19,11 @@ from UM.Settings.InstanceContainer import InstanceContainer
 from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.ConfigurationErrorMessage import ConfigurationErrorMessage
 
+from cura.Machines.VariantType import VariantType
+
 from .XmlMaterialValidator import XmlMaterialValidator
 
+
 ##  Handles serializing and deserializing material containers from an XML file
 class XmlMaterialProfile(InstanceContainer):
     CurrentFdmMaterialVersion = "1.3"
@@ -269,7 +272,6 @@ class XmlMaterialProfile(InstanceContainer):
             buildplate_dict = {} # type: Dict[str, Any]
             for variant_name, variant_dict in machine_variant_map[definition_id].items():
                 variant_type = variant_dict["variant_node"].metadata["hardware_type"]
-                from cura.Machines.VariantManager import VariantType
                 variant_type = VariantType(variant_type)
                 if variant_type == VariantType.NOZZLE:
                     # The hotend identifier is not the containers name, but its "name".