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# Copyright (c) 2018 Ultimaker B.V.
# Uranium is released under the terms of the LGPLv3 or higher.
from typing import Dict, Optional, TYPE_CHECKING
if TYPE_CHECKING:
from UM.Scene.SceneNode import SceneNode
class SceneNodeDecorator:
"""The point of a SceneNodeDecorator is that it can be added to a SceneNode, where it then provides decorations
Decorations are functions of a SceneNodeDecorator that can be called (except for functions already defined
in SceneNodeDecorator).
:sa SceneNode
"""
def __init__(self, node: Optional["SceneNode"] = None) -> None:
super().__init__()
self._node = node # type: Optional["SceneNode"]
def setNode(self, node: "SceneNode") -> None:
self._node = node
def getNode(self) -> Optional["SceneNode"]:
return self._node
def clear(self) -> None:
"""Clear all data associated with this decorator. This will be called before the decorator is removed"""
pass
def __deepcopy__(self, memo: Dict[int, object]) -> "SceneNodeDecorator":
raise NotImplementedError("Subclass {0} of SceneNodeDecorator should implement their own __deepcopy__() method.".format(str(self)))
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