code.vuplus.com Git - vuplus_dvbapp/blob - lib/python/Screens/Screen.py

   1 from Components.HTMLSkin import *
   2 from Components.GUISkin import *
   3
   4 import sys
   5
   6 class Screen(dict, HTMLSkin, GUISkin):
   7         """ bla """
   8
   9         def __init__(self, session):
  10                 self.skinName = self.__class__.__name__
  11                 self.session = session
  12                 GUISkin.__init__(self)
  13
  14                 self.onClose = [ ]
  15                 self.onExecBegin = [ ]
  16
  17                 # in order to support screens *without* a help,
  18                 # we need the list in every screen. how ironic.
  19                 self.helpList = [ ]
  20
  21         def execBegin(self):
  22                 for x in self.onExecBegin:
  23                         x()
  24 #               assert self.session == None, "a screen can only exec one per time"
  25 #               self.session = session
  26                 for (name, val) in self.items():
  27                         val.execBegin()
  28
  29         def execEnd(self):
  30                 for (name, val) in self.items():
  31                         val.execEnd()
  32 #               assert self.session != None, "execEnd on non-execing screen!"
  33 #               self.session = None
  34
  35         # never call this directly - it will be called from the session!
  36         def doClose(self):
  37                 for x in self.onClose:
  38                         x()
  39
  40                 # fixup circular references
  41                 del self.helpList
  42                 GUISkin.close(self)
  43
  44                 del self.session
  45                 for (name, val) in self.items():
  46                         del self[name]
  47
  48         def close(self, *retval):
  49                 self.session.close(*retval)
  50
  51         def setFocus(self, o):
  52                 self.instance.setFocus(o.instance)