Add global quality nodes to machine node

This means that the parent of the quality node could be one of two types. A bit confusing.

Contributes to issue CURA-6600.

cura/Machines/MachineNode.py

@@ -7,6 +7,7 @@ from UM.Util import parseBool
 from UM.Settings.ContainerRegistry import ContainerRegistry  # To find all the variants for this machine.
 from UM.Settings.Interfaces import ContainerInterface
 from cura.Machines.ContainerNode import ContainerNode
+from cura.Machines.QualityNode import QualityNode
 from cura.Machines.VariantNode import VariantNode
 
 if TYPE_CHECKING:
@@ -18,7 +19,8 @@ if TYPE_CHECKING:
 class MachineNode(ContainerNode):
     def __init__(self, container_id: str) -> None:
         super().__init__(container_id)
-        self.variants = {}  # type: Dict[str, VariantNode] # mapping variant names to their nodes.
+        self.variants = {}  # type: Dict[str, VariantNode] # Mapping variant names to their nodes.
+        self.global_qualities = {}  # type: Dict[str, QualityNode] # Mapping quality types to the global quality for those types.
         container_registry = ContainerRegistry.getInstance()
 
         my_metadata = container_registry.findContainersMetadata(id = container_id)[0]
@@ -37,12 +39,20 @@ class MachineNode(ContainerNode):
     ##  (Re)loads all variants under this printer.
     def _loadAll(self):
         # Find all the variants for this definition ID.
-        variants = ContainerRegistry.getInstance().findInstanceContainersMetadata(type = "variant", definition = self.container_id, hardware_type = "nozzle")
+        container_registry = ContainerRegistry.getInstance()
+        variants = container_registry.findInstanceContainersMetadata(type = "variant", definition = self.container_id, hardware_type = "nozzle")
         for variant in variants:
             variant_name = variant["name"]
             if variant_name not in self.variants:
                 self.variants[variant_name] = VariantNode(variant["id"], machine = self)
 
+        # Find the global qualities for this printer.
+        global_qualities = container_registry.findInstanceContainersMetadata(type = "quality", definition = self.container_id, global_quality = True)  # First try specific to this printer.
+        if len(global_qualities) == 0:  # This printer doesn't override the global qualities.
+            global_qualities = container_registry.findInstanceContainersMetadata(type = "quality", definition = "fdmprinter", global_quality = True)  # Otherwise pick the global global qualities.
+        for global_quality in global_qualities:
+            self.global_qualities[global_quality["quality_type"]] = QualityNode(global_quality["id"], parent = self)
+
     ##  When a variant gets added to the set of profiles, we need to update our
     #   tree here.
     def _variantAdded(self, container: ContainerInterface):

cura/Machines/MaterialNode.py

@@ -37,7 +37,7 @@ class MaterialNode(ContainerNode):
         for quality in qualities:
             quality_id = quality["id"]
             if quality_id not in self.qualities:
-                self.qualities[quality_id] = QualityNode(quality_id, material = self)
+                self.qualities[quality_id] = QualityNode(quality_id, parent = self)
 
     def _qualityAdded(self, container: ContainerInterface) -> None:
         if container.getMetaDataEntry("type") != "quality":
@@ -50,4 +50,4 @@ class MaterialNode(ContainerNode):
                 return  # Doesn't match our configuration.
 
         quality_id = container.getId()
-        self.qualities[quality_id] = QualityNode(quality_id, material = self)
+        self.qualities[quality_id] = QualityNode(quality_id, parent = self)

cura/Machines/QualityNode.py

@@ -1,7 +1,7 @@
 # Copyright (c) 2019 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
-from typing import TYPE_CHECKING
+from typing import Union, TYPE_CHECKING
 
 from UM.Settings.ContainerRegistry import ContainerRegistry
 from UM.Settings.Interfaces import ContainerInterface
@@ -11,14 +11,15 @@ from cura.Machines.IntentNode import IntentNode
 if TYPE_CHECKING:
     from typing import Dict
     from cura.Machines.MaterialNode import MaterialNode
+    from cura.Machines.MachineNode import MachineNode
 
 ##  Represents a material profile in the container tree.
 #
 #   Its subcontainers are intent profiles.
 class QualityNode(ContainerNode):
-    def __init__(self, container_id: str, material: "MaterialNode") -> None:
+    def __init__(self, container_id: str, parent: Union["MaterialNode", "MachineNode"]) -> None:
         super().__init__(container_id)
-        self.material = material
+        self.parent = parent
         self.intents = {}  # type: Dict[str, IntentNode]
         ContainerRegistry.getInstance().containerAdded.connect(self._intentAdded)
         self._loadAll()
@@ -26,17 +27,22 @@ class QualityNode(ContainerNode):
     def _loadAll(self) -> None:
         container_registry = ContainerRegistry.getInstance()
         # Find all intent profiles that fit the current configuration.
-        for intent in container_registry.findInstanceContainersMetadata(type = "intent", definition = self.material.variant.machine.quality_definition, variant = self.material.variant.variant_name, material = self.material.base_file):
-            self.intents[intent["id"]] = IntentNode(intent["id"], quality = self)
+        if isinstance(self.parent, MaterialNode):  # Not a global profile.
+            for intent in container_registry.findInstanceContainersMetadata(type = "intent", definition = self.parent.variant.machine.quality_definition, variant = self.parent.variant.variant_name, material = self.parent.base_file):
+                self.intents[intent["id"]] = IntentNode(intent["id"], quality = self)
+        # Otherwise, there are no intents for global profiles.
 
     def _intentAdded(self, container: ContainerInterface) -> None:
+        from cura.Machines.MachineNode import MachineNode  # Imported here to prevent circular imports.
         if container.getMetaDataEntry("type") != "intent":
             return  # Not interested if it's not an intent.
-        if container.getMetaDataEntry("definition") != self.material.variant.machine.quality_definition:
+        if isinstance(self.parent, MachineNode):
+            return  # Global profiles don't have intents.
+        if container.getMetaDataEntry("definition") != self.parent.variant.machine.quality_definition:
             return  # Incorrect printer.
-        if container.getMetaDataEntry("variant") != self.material.variant.variant_name:
+        if container.getMetaDataEntry("variant") != self.parent.variant.variant_name:
             return  # Incorrect variant.
-        if container.getMetaDataEntry("material") != self.material.base_file:
+        if container.getMetaDataEntry("material") != self.parent.base_file:
             return  # Incorrect material.
         container_id = container.getId()
         if container_id in self.intents: