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# Copyright (c) 2018 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
from typing import Optional, Any, TYPE_CHECKING, Set
from UM.Logger import Logger
from UM.Settings.InstanceContainer import InstanceContainer
if TYPE_CHECKING:
from UM.Settings.Interfaces import ContainerInterface
from UM.Settings.PropertyEvaluationContext import PropertyEvaluationContext
#
# Represents an empty instance container which is not allowed to store any
#
class EmptyInstanceContainer(InstanceContainer):
def isDirty(self) -> bool:
return False
def getProperty(self, key: str, property_name: str, context: Optional["PropertyEvaluationContext"] = None) -> Any:
return None
def setProperty(self, key: str, property_name: str, property_value: Any, container: Optional["ContainerInterface"] = None, set_from_cache: bool = False) -> None:
Logger.log("e", "Setting property %s of container %s which should remain empty", key, self.getName())
return
def getConfigurationType(self) -> str:
return "" # FIXME: not sure if this is correct
def serialize(self, ignored_metadata_keys: Optional[Set[str]] = None) -> str:
return "[general]\n version = " + str(InstanceContainer.Version) + "\n name = empty\n definition = fdmprinter\n"
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