lib/python/Components/Sources/Boolean.py

   1 from Source import Source
   2 from enigma import eTimer
   3
   4 # a small warning:
   5 # you can use that boolean well to express screen-private
   6 # conditional expressions.
   7 #
   8 # however, if you think that there is ANY interest that another
   9 # screen could use your expression, please put your calculation
  10 # into a seperate Source, providing a "boolean"-property.
  11 class Boolean(Source, object):
  12         def __init__(self, fixed = False, function = None, poll = 0):
  13                 Source.__init__(self)
  14                 if poll > 0:
  15                         self.poll_timer = eTimer()
  16                         self.poll_timer.timeout.get().append(self.poll)
  17                         self.poll_timer.start(poll)
  18
  19         def getBoolean(self):
  20                 if self.function is not None:
  21                         return self.function()
  22                 else:
  23                         return self.fixed
  24
  25         boolean = property(getBoolean)
  26
  27         def poll(self):
  28                 self.changed((self.CHANGED_ALL,))