Lib/lib-tk/ScrolledText.py

   1 # A ScrolledText widget feels like a text 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 Text widget.
   8 # A Frame widget is inserted between the master and the text, to hold
   9 # the Scrollbar widget.
  10 # Most methods calls are inherited from the Text widget; Pack methods
  11 # are redirected to the Frame widget however.
  12
  13 from Tkinter import *
  14 from Tkinter import _cnfmerge
  15
  16 class ScrolledText(Text):
  17     def __init__(self, master=None, cnf=None, **kw):
  18         if cnf is None:
  19             cnf = {}
  20         if kw:
  21             cnf = _cnfmerge((cnf, kw))
  22         fcnf = {}
  23         for k in cnf.keys():
  24             if type(k) == ClassType or k == 'name':
  25                 fcnf[k] = cnf[k]
  26                 del cnf[k]
  27         self.frame = apply(Frame, (master,), fcnf)
  28         self.vbar = Scrollbar(self.frame, name='vbar')
  29         self.vbar.pack(side=RIGHT, fill=Y)
  30         cnf['name'] = 'text'
  31         apply(Text.__init__, (self, self.frame), cnf)
  32         self.pack(side=LEFT, fill=BOTH, expand=1)
  33         self['yscrollcommand'] = self.vbar.set
  34         self.vbar['command'] = self.yview
  35
  36         # Copy Pack methods of self.frame -- hack!
  37         for m in Pack.__dict__.keys():
  38             if m[0] != '_' and m != 'config' and m != 'configure':
  39                 setattr(self, m, getattr(self.frame, m))