lib/python/Components/ConditionalWidget.py

   1 import skin
   2 from GUIComponent import *
   3
   4 from enigma import *
   5
   6 class Widget(GUIComponent):
   7
   8         SHOWN = 0
   9         HIDDEN = 1
  10
  11         def __init__(self):
  12                 GUIComponent.__init__(self)
  13                 self.instance = None
  14                 self.state = self.SHOWN
  15
  16         def GUIcreate(self, parent):
  17                 self.instance = self.createWidget(parent)
  18
  19         def GUIdelete(self):
  20                 self.removeWidget(self.instance)
  21                 self.instance = None
  22
  23         def removeWidget(self, w):
  24                 pass
  25
  26         def showWidget(self):
  27                 self.state = self.SHOWN
  28                 self.instance.show()
  29
  30         def hideWidget(self):
  31                 self.state = self.HIDDEN
  32                 self.instance.hide()
  33
  34         def move(self, x, y):
  35                 self.instance.move(ePoint(int(x), int(y)))
  36
  37 class ConditionalWidget(Widget):
  38         def __init__(self, withTimer = True):
  39                 Widget.__init__(self)
  40
  41                 self.setConnect(None)
  42
  43                 if (withTimer):
  44                         self.conditionCheckTimer = eTimer()
  45                         self.conditionCheckTimer.timeout.get().append(self.update)
  46                         self.conditionCheckTimer.start(1000)
  47
  48         def setConnect(self, conditionalFunction):
  49                 self.conditionalFunction = conditionalFunction
  50
  51         def activateCondition(self, condition):
  52                 if (condition):
  53                         if (self.state == self.HIDDEN):
  54                                 self.showWidget()
  55                 else:
  56                         if (self.state == self.SHOWN):
  57                                 self.hideWidget()
  58
  59         def update(self):
  60                 if (self.conditionalFunction != None):
  61                         try:
  62                                 self.conditionalFunction() # check, if the conditionalfunction is still valid
  63                                 self.activateCondition(self.conditionalFunction())
  64                         except:
  65                                 self.conditionalFunction = None
  66                                 self.activateCondition(False)
  67
  68
  69
  70
  71
  72 import time
  73
  74 class BlinkingWidget(Widget):
  75         def __init__(self):
  76                 Widget.__init__(self)
  77
  78                 self.blinking = True
  79
  80                 self.setBlinkTime(500)
  81
  82                 self.timer = eTimer()
  83                 self.timer.timeout.get().append(self.blink)
  84
  85         def setBlinkTime(self, time):
  86                 self.blinktime = time
  87
  88         def blink(self):
  89                 if self.blinking == True:
  90                         if (self.state == self.SHOWN):
  91                                 self.hideWidget()
  92                         elif (self.state == self.HIDDEN):
  93                                 self.showWidget()
  94
  95         def startBlinking(self):
  96                 self.blinking = True
  97                 self.timer.start(self.blinktime)
  98
  99         def stopBlinking(self):
 100                 self.blinking = False
 101                 if (self.state == self.SHOWN):
 102                         self.hideWidget()
 103                 self.timer.stop()
 104
 105 class BlinkingWidgetConditional(BlinkingWidget, ConditionalWidget):
 106         def __init__(self):
 107                 BlinkingWidget.__init__(self)
 108                 ConditionalWidget.__init__(self)
 109
 110         def activateCondition(self, condition):
 111                 if (condition):
 112                         if not self.blinking: # we are already blinking
 113                                 self.startBlinking()
 114                 else:
 115                         if self.blinking: # we are blinking
 116                                 self.stopBlinking()