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from enigma import eTimer
from Converter import Converter
class ConditionalShowHide(Converter, object):
def __init__(self, argstr):
Converter.__init__(self, type)
args = argstr.split(',')
self.invert = "Invert" in args
self.blink = "Blink" in args
if self.blink:
self.blinktime = 500
self.timer = eTimer()
self.timer.timeout.get().append(self.blinkFunc)
else:
self.timer = None
def blinkFunc(self):
if self.blinking == True:
for x in self.downstream_elements:
x.visible = not x.visible
def startBlinking(self):
self.blinking = True
self.timer.start(self.blinktime)
def stopBlinking(self):
self.blinking = False
for x in self.downstream_elements:
if x.visible:
x.hide()
self.timer.stop()
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()
if self.blink:
if vis:
self.startBlinking()
else:
self.stopBlinking()
else:
for x in self.downstream_elements:
x.visible = vis
def connectDownstream(self, downstream):
Converter.connectDownstream(self, downstream)
vis = self.calcVisibility()
if self.blink:
if vis:
self.startBlinking()
else:
self.stopBlinking()
else:
downstream.visible = self.calcVisibility()
def destroy(self):
if self.timer:
self.timer.timeout.get().remove(self.blinkFunc)
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