lib/python/Components/ConditionalWidget.py

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