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from Converter import Converter
class ConditionalShowHide(Converter, object):
def __init__(self, type):
Converter.__init__(self, type)
self.invert = type == "Invert"
def calcVisibility(self):
b = self.source.boolean
if b is None:
return True
b ^= self.invert
return b
def changed(self, what):
vis = self.calcVisibility()
for x in self.downstream_elements:
x.visible = vis
def connectDownstream(self, downstream):
Converter.connectDownstream(self, downstream)
downstream.visible = self.calcVisibility()
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