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
  16                 # in order to support screens *without* a help,
  17                 # we need the list in every screen. how ironic.
  18                 self.helpList = [ ]
  19
  20         def execBegin(self):
  21 #               assert self.session == None, "a screen can only exec one per time"
  22 #               self.session = session
  23                 for (name, val) in self.items():
  24                         val.execBegin()
  25
  26         def execEnd(self):
  27                 for (name, val) in self.items():
  28                         val.execEnd()
  29 #               assert self.session != None, "execEnd on non-execing screen!"
  30 #               self.session = None
  31
  32         # never call this directly - it will be called from the session!
  33         def doClose(self):
  34                 for x in self.onClose:
  35                         x()
  36
  37                 # fixup circular references
  38                 del self.helpList
  39                 GUISkin.close(self)
  40
  41                 del self.session
  42                 for (name, val) in self.items():
  43                         del self[name]
  44
  45         def close(self, *retval):
  46                 self.session.close(*retval)
  47
  48         def setFocus(self, o):
  49                 self.instance.setFocus(o.instance)