lib/python/Components/PerServiceDisplay.py

   1 from GUIComponent import GUIComponent
   2 from VariableText import VariableText
   3 from VariableValue import VariableValue
   4
   5 from enigma import iPlayableService
   6 from enigma import eLabel, eSlider, eTimer
   7
   8
   9 class PerServiceBase(object):
  10         EventMap = { }
  11
  12         @staticmethod
  13         def event(ev):
  14                 func_list = PerServiceBase.EventMap.setdefault(ev, [])
  15                 for func in func_list:
  16                         if func[0]: # with_event
  17                                 func[1](ev)
  18                         else:
  19                                 func[1]()
  20
  21         def __init__(self, navcore, eventmap, with_event=False):
  22                 self.navcore = navcore
  23                 self.eventmap = eventmap
  24                 self.poll_timer = eTimer()
  25                 self.with_event = with_event
  26
  27                 self.poll_timer.callback.append(self.poll)
  28
  29                 EventMap = PerServiceBase.EventMap
  30                 if not len(EventMap):
  31                         self.navcore.event.append(PerServiceBase.event)
  32
  33                 EventMap = EventMap.setdefault
  34                 for x in eventmap.iteritems():
  35                         EventMap(x[0], []).append((with_event, x[1]))
  36
  37                 # start with stopped state, so simulate that
  38                 evEndEntry = eventmap.get(iPlayableService.evEnd)
  39                 if evEndEntry:
  40                         if with_event:
  41                                 evEndEntry(iPlayableService.evEnd)
  42                         else:
  43                                 evEndEntry()
  44
  45         def destroy(self):
  46                 EventMap = PerServiceBase.EventMap.setdefault
  47                 for x in self.eventmap.iteritems():
  48                         EventMap(x[0], []).remove((self.with_event, x[1]))
  49
  50         def enablePolling(self, interval=60000):
  51                 if interval:
  52                         self.poll_timer.start(interval)
  53                 else:
  54                         self.poll_timer.stop()
  55
  56         def disablePolling(self):
  57                 self.enablePolling(interval=0)
  58
  59         def poll(self):
  60                 pass
  61
  62 class PerServiceDisplay(PerServiceBase, VariableText, GUIComponent):
  63         """Mixin for building components which display something which changes on navigation events, for example "service name" """
  64         def __init__(self, navcore, eventmap):
  65                 GUIComponent.__init__(self)
  66                 VariableText.__init__(self)
  67                 PerServiceBase.__init__(self, navcore, eventmap)
  68
  69         def destroy(self):
  70                 PerServiceBase.destroy(self)
  71                 GUIComponent.destroy(self)
  72
  73         GUI_WIDGET = eLabel
  74
  75 class PerServiceDisplayProgress(PerServiceBase, VariableValue, GUIComponent):
  76         def __init__(self, navcore, eventmap):
  77                 GUIComponent.__init__(self)
  78                 VariableValue.__init__(self)
  79                 PerServiceBase.__init__(self, navcore, eventmap)
  80                 self.eventmap = eventmap
  81                 self.navcore = navcore
  82                 self.navcore.event.append(self.event)
  83
  84                 # start with stopped state, so simulate that
  85                 self.event(iPlayableService.evEnd)
  86
  87         GUI_WIDGET = eSlider
  88
  89         def destroy(self):
  90                 PerServiceBase.destroy(self)
  91                 GUIComponent.destroy(self)