pass service events to old instance of InfoBarBase until a new service is
[enigma2.git] / lib / python / Components / ServiceEventTracker.py
index 2046043..1c42ecc 100644 (file)
@@ -1,15 +1,66 @@
+class InfoBarBase:
+       def __init__(self, steal_current_service = False):
+               if steal_current_service:
+                       ServiceEventTracker.setActiveInfoBar(self, None, None)
+               else:
+                       nav = self.session.nav
+                       ServiceEventTracker.setActiveInfoBar(self, not steal_current_service and nav.getCurrentService(), nav.getCurrentlyPlayingServiceReference())
+               self.onClose.append(self.__close)
+
+       def __close(self):
+               ServiceEventTracker.popActiveInfoBar()
+
 class ServiceEventTracker:
        """Tracks service events into a screen"""
-       
+       InfoBarStack = [ ]
+       InfoBarStackSize = 0
+       oldService = None
+
        def __init__(self, screen, eventmap):
                self.__eventmap = eventmap
-               self.session = screen.session
-               self.session.nav.event.append(self.__event)
+               self.screen = screen
+               screen.session.nav.event.append(self.__event)
                screen.onClose.append(self.__del_event)
 
        def __del_event(self):
-               self.session.nav.event.remove(self.__event)
+               self.screen.session.nav.event.remove(self.__event)
 
        def __event(self, ev):
+               set = ServiceEventTracker
+               screen = self.screen
+               nav = screen.session.nav
+               cur_ref = nav.getCurrentlyPlayingServiceReference()
+               old_service_running = set.oldRef and cur_ref and cur_ref == set.oldRef and set.oldService and set.oldService == str(nav.getCurrentService())
+               if not old_service_running:
+                       set.oldService = None
+                       set.oldRef = None
+#              print "old_service_running", old_service_running
                if ev in self.__eventmap:
-                       self.__eventmap[ev]()
+                       ssize = set.InfoBarStackSize
+                       stack = set.InfoBarStack
+                       if (not isinstance(screen, InfoBarBase) or # let pass all events to screens not derived from InfoBarBase
+                               (not old_service_running and ssize and stack[ssize-1] == screen) or # let pass events from currently running service just to current active screen (derived from InfoBarBase)
+                               (old_service_running and ssize > 1 and stack[ssize-2] == screen)): # let pass events from old running service just to previous active screen (derived from InfoBarBase)
+                               self.__eventmap[ev]()
+#                      else:
+#                              print "ignore event", ev, "for inactive infobar '" + str(self.screen) + "'"
+
+       @staticmethod
+       def setActiveInfoBar(infobar, old_service, old_ref):
+               set = ServiceEventTracker
+               set.oldRef = old_ref
+               set.oldService = old_service and str(old_service)
+               assert infobar not in set.InfoBarStack, "FATAL: Infobar '" + str(infobar) + "' is already active!"
+               set.InfoBarStack.append(infobar)
+               set.InfoBarStackSize += 1
+#              print "ServiceEventTracker set active '" + str(infobar) + "'"
+
+       @staticmethod
+       def popActiveInfoBar():
+               set = ServiceEventTracker
+               stack = set.InfoBarStack
+               if set.InfoBarStackSize:
+                       set.InfoBarStackSize -= 1
+                       del stack[set.InfoBarStackSize]
+#                      if set.InfoBarStackSize:
+#                              print "ServiceEventTracker reset active '" + str(stack[set.InfoBarStackSize-1]) + "'"