Tools/modulator/ScrolledListbox.py

   1 # A ScrolledList widget feels like a list widget but also has a
   2 # vertical scroll bar on its right.  (Later, options may be added to
   3 # add a horizontal bar as well, to make the bars disappear
   4 # automatically when not needed, to move them to the other side of the
   5 # window, etc.)
   6 #
   7 # Configuration options are passed to the List widget.
   8 # A Frame widget is inserted between the master and the list, to hold
   9 # the Scrollbar widget.
  10 # Most methods calls are inherited from the List widget; Pack methods
  11 # are redirected to the Frame widget however.
  12
  13 from Tkinter import *
  14 from Tkinter import _cnfmerge
  15
  16 class ScrolledListbox(Listbox):
  17     def __init__(self, master=None, cnf={}):
  18         cnf = _cnfmerge(cnf)
  19         fcnf = {}
  20         vcnf = {'name': 'vbar',
  21             Pack: {'side': 'right', 'fill': 'y'},}
  22         for k in cnf.keys():
  23             if type(k) == ClassType or k == 'name':
  24                 fcnf[k] = cnf[k]
  25                 del cnf[k]
  26         self.frame = Frame(master, fcnf)
  27         self.vbar = Scrollbar(self.frame, vcnf)
  28         cnf[Pack] = {'side': 'left', 'fill': 'both', 'expand': 'yes'}
  29         cnf['name'] = 'list'
  30         Listbox.__init__(self, self.frame, cnf)
  31         self['yscrollcommand'] = (self.vbar, 'set')
  32         self.vbar['command'] = (self, 'yview')
  33
  34         # Copy Pack methods of self.frame -- hack!
  35         for m in Pack.__dict__.keys():
  36             if m[0] != '_' and m != 'config':
  37                 setattr(self, m, getattr(self.frame, m))