mirror of
https://github.com/Ultimaker/Cura.git
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92 lines
3.5 KiB
Python
92 lines
3.5 KiB
Python
# Copyright (c) 2017 Ultimaker B.V.
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# Cura is released under the terms of the AGPLv3 or higher.
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from typing import Any
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from PyQt5.QtCore import pyqtProperty, pyqtSlot, pyqtSignal
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from UM.Decorators import override
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from UM.MimeTypeDatabase import MimeType, MimeTypeDatabase
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from UM.Settings.ContainerStack import ContainerStack, InvalidContainerStackError
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from UM.Settings.InstanceContainer import InstanceContainer
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from UM.Settings.DefinitionContainer import DefinitionContainer
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from UM.Settings.ContainerRegistry import ContainerRegistry
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from UM.Settings.Interfaces import ContainerInterface
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from . import Exceptions
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from .CuraContainerStack import CuraContainerStack
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class GlobalStack(CuraContainerStack):
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def __init__(self, container_id: str, *args, **kwargs):
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super().__init__(container_id, *args, **kwargs)
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self.addMetaDataEntry("type", "machine") # For backward compatibility
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self._extruders = []
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# This property is used to track which settings we are calculating the "resolve" for
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# and if so, to bypass the resolve to prevent an infinite recursion that would occur
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# if the resolve function tried to access the same property it is a resolve for.
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self._resolving_settings = set()
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@pyqtProperty("QVariantList")
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def extruders(self) -> list:
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return self._extruders
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def addExtruder(self, extruder):
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extruder_count = self.getProperty("machine_extruder_count", "value")
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if extruder_count and len(self._extruders) + 1 > extruder_count:
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raise Exceptions.TooManyExtrudersError("Tried to add extruder to {id} but its extruder count is {count}".format(id = self.id, count = extruder_count))
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self._extruders.append(extruder)
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## Overridden from ContainerStack
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@override(ContainerStack)
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def getProperty(self, key: str, property_name: str) -> Any:
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if not self.definition.findDefinitions(key = key):
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return None
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if self._shouldResolve(key, property_name):
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self._resolving_settings.add(key)
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resolve = super().getProperty(key, "resolve")
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self._resolving_settings.remove(key)
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if resolve is not None:
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return resolve
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return super().getProperty(key, property_name)
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## Overridden from ContainerStack
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@override(ContainerStack)
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def setNextStack(self, next_stack: ContainerStack) -> None:
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raise Exceptions.InvalidOperationError("Global stack cannot have a next stack!")
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def _shouldResolve(self, key: str, property_name: str) -> bool:
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if property_name is not "value":
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# Do not try to resolve anything but the "value" property
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return False
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if key in self._resolving_settings:
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# To prevent infinite recursion, if getProperty is called with the same key as
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# we are already trying to resolve, we should not try to resolve again. Since
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# this can happen multiple times when trying to resolve a value, we need to
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# track all settings that are being resolved.
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return False
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if self.hasUserValue(key):
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# When the user has explicitly set a value, we should ignore any resolve and
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# just return that value.
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return False
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return True
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## private:
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global_stack_mime = MimeType(
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name = "application/x-cura-globalstack",
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comment = "Cura Global Stack",
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suffixes = ["global.cfg"]
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)
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MimeTypeDatabase.addMimeType(global_stack_mime)
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ContainerRegistry.addContainerTypeByName(GlobalStack, "global_stack", global_stack_mime.name)
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