Mac/Lib/lib-toolbox/ControlAccessor.py

   1 # Accessor functions for control properties
   2
   3 from Controls import *
   4 import struct
   5
   6 # These needn't go through this module, but are here for completeness
   7 def SetControlDataHandle(control, part, selector, data):
   8         control.SetControlDataHandle(part, selector, data)
   9
  10 def GetControlDataHandle(control, part, selector):
  11         return control.GetControlDataHandle(part, selector)
  12
  13 _accessdict = {
  14         kControlPopupButtonMenuHandleTag: (SetControlDataHandle, GetControlDataHandle),
  15 }
  16
  17 _codingdict = {
  18         kControlPushButtonDefaultTag : ("b", None, None),
  19
  20         kControlEditTextTextTag: (None, None, None),
  21         kControlEditTextPasswordTag: (None, None, None),
  22
  23         kControlPopupButtonMenuIDTag: ("h", None, None),
  24
  25         kControlListBoxDoubleClickTag: ("b", None, None),
  26 }
  27
  28 def SetControlData(control, part, selector, data):
  29         if _accessdict.has_key(selector):
  30                 setfunc, getfunc = _accessdict[selector]
  31                 setfunc(control, part, selector, data)
  32                 return
  33         if not _codingdict.has_key(selector):
  34                 raise KeyError, ('Unknown control selector', selector)
  35         structfmt, coder, decoder = _codingdict[selector]
  36         if coder:
  37                 data = coder(data)
  38         if structfmt:
  39                 data = struct.pack(structfmt, data)
  40         control.SetControlData(part, selector, data)
  41
  42 def GetControlData(control, part, selector):
  43         if _accessdict.has_key(selector):
  44                 setfunc, getfunc = _accessdict[selector]
  45                 return getfunc(control, part, selector, data)
  46         if not _codingdict.has_key(selector):
  47                 raise KeyError, ('Unknown control selector', selector)
  48         structfmt, coder, decoder = _codingdict[selector]
  49         data = control.GetControlData(part, selector)
  50         if structfmt:
  51                 data = struct.unpack(structfmt, data)
  52         if decoder:
  53                 data = decoder(data)
  54         if type(data) == type(()) and len(data) == 1:
  55                 data = data[0]
  56         return data
  57