lib/python/Components/ConditionalWidget.py

   1 from GUIComponent import *
   2 from enigma import eTimer
   3
   4 class ConditionalWidget(GUIComponent):
   5         def __init__(self, withTimer = True):
   6                 GUIComponent.__init__(self)
   7
   8                 self.setConnect(None)
   9
  10                 if (withTimer):
  11                         self.conditionCheckTimer = eTimer()
  12                         self.conditionCheckTimer.timeout.get().append(self.update)
  13                         self.conditionCheckTimer.start(1000)
  14
  15         def setConnect(self, conditionalFunction):
  16                 self.conditionalFunction = conditionalFunction
  17
  18         def activateCondition(self, condition):
  19                 if condition:
  20                         self.visible = 1
  21                 else:
  22                         self.visible = 0
  23
  24         def update(self):
  25                 if (self.conditionalFunction != None):
  26                         try:
  27                                 self.conditionalFunction() # check, if the conditionalfunction is still valid
  28                                 self.activateCondition(self.conditionalFunction())
  29                         except:
  30                                 self.conditionalFunction = None
  31                                 self.activateCondition(False)
  32
  33 import time
  34
  35 class BlinkingWidget(GUIComponent):
  36         def __init__(self):
  37                 GUIComponent.__init__(self)
  38
  39                 self.blinking = True
  40
  41                 self.setBlinkTime(500)
  42
  43                 self.timer = eTimer()
  44                 self.timer.timeout.get().append(self.blink)
  45
  46         def setBlinkTime(self, time):
  47                 self.blinktime = time
  48
  49         def blink(self):
  50                 if self.blinking == True:
  51                         self.visible = not self.visible
  52
  53         def startBlinking(self):
  54                 self.blinking = True
  55                 self.timer.start(self.blinktime)
  56
  57         def stopBlinking(self):
  58                 self.blinking = False
  59                 if self.visible:
  60                         self.hide()
  61                 self.timer.stop()
  62
  63 class BlinkingWidgetConditional(BlinkingWidget, ConditionalWidget):
  64         def __init__(self):
  65                 BlinkingWidget.__init__(self)
  66                 ConditionalWidget.__init__(self)
  67
  68         def activateCondition(self, condition):
  69                 if (condition):
  70                         if not self.blinking: # we are already blinking
  71                                 self.startBlinking()
  72                 else:
  73                         if self.blinking: # we are blinking
  74                                 self.stopBlinking()