from UM.Scene.SceneNodeDecorator import SceneNodeDecorator
from UM.Application import Application

class ConvexHullDecorator(SceneNodeDecorator):
    def __init__(self):
        super().__init__()
        self._convex_hull = None
        self._convex_hull_node = None
        self._convex_hull_job = None
        settings = Application.getInstance().getActiveMachine()
        print_sequence_setting = settings.getSettingByKey("print_sequence")
        if print_sequence_setting:
            print_sequence_setting.valueChanged.connect(self._onPrintSequenceSettingChanged)
            
    def _onPrintSequenceSettingChanged(self, setting):
        if self._convex_hull_job:
            self._convex_hull_job.cancel()
        self.setConvexHull(None)
        if self._convex_hull_node:
            self._convex_hull_node.setParent(None)
            self._convex_hull_node = None
    
    def getConvexHull(self):
        return self._convex_hull
    
    def setConvexHull(self, hull):
        self._convex_hull = hull
    
    def getConvexHullJob(self):
        return self._convex_hull_job
    
    def setConvexHullJob(self, job):
        self._convex_hull_job = job
    
    def getConvexHullNode(self):
        return self._convex_hull_node
    
    def setConvexHullNode(self, node):
        self._convex_hull_node = node