Demo/tix/samples/Tree.py

   1 # -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
   2 #
   3 # $Id$
   4 #
   5 # Tix Demostration Program
   6 #
   7 # This sample program is structured in such a way so that it can be
   8 # executed from the Tix demo program "tixwidgets.py": it must have a
   9 # procedure called "RunSample". It should also have the "if" statment
  10 # at the end of this file so that it can be run as a standalone
  11 # program.
  12
  13 # This file demonstrates how to use the TixTree widget to display
  14 # dynamic hierachical data (the files in the Unix file system)
  15 #
  16
  17 import Tix, os
  18
  19 def RunSample(w):
  20     top = Tix.Frame(w, relief=Tix.RAISED, bd=1)
  21     tree = Tix.Tree(top, options='separator "/"')
  22     tree.pack(expand=1, fill=Tix.BOTH, padx=10, pady=10, side=Tix.LEFT)
  23     tree['opencmd'] = lambda dir=None, w=tree: opendir(w, dir)
  24
  25     # The / directory is added in the "open" mode. The user can open it
  26     # and then browse its subdirectories ...
  27     adddir(tree, "/")
  28
  29     box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
  30     box.add('ok', text='Ok', underline=0, command=w.destroy, width=6)
  31     box.add('cancel', text='Cancel', underline=0, command=w.destroy, width=6)
  32     box.pack(side=Tix.BOTTOM, fill=Tix.X)
  33     top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
  34
  35 def adddir(tree, dir):
  36     if dir == '/':
  37         text = '/'
  38     else:
  39         text = os.path.basename(dir)
  40     tree.hlist.add(dir, itemtype=Tix.IMAGETEXT, text=text,
  41                    image=tree.tk.call('tix', 'getimage', 'folder'))
  42     try:
  43         os.listdir(dir)
  44         tree.setmode(dir, 'open')
  45     except os.error:
  46         # No read permission ?
  47         pass
  48
  49 # This function is called whenever the user presses the (+) indicator or
  50 # double clicks on a directory whose mode is "open". It loads the files
  51 # inside that directory into the Tree widget.
  52 #
  53 # Note we didn't specify the closecmd option for the Tree widget, so it
  54 # performs the default action when the user presses the (-) indicator or
  55 # double clicks on a directory whose mode is "close": hide all of its child
  56 # entries
  57 def opendir(tree, dir):
  58     entries = tree.hlist.info_children(dir)
  59     if entries:
  60         # We have already loaded this directory. Let's just
  61         # show all the child entries
  62         #
  63         # Note: since we load the directory only once, it will not be
  64         #       refreshed if the you add or remove files from this
  65         #       directory.
  66         #
  67         for entry in entries:
  68             tree.hlist.show_entry(entry)
  69     files = os.listdir(dir)
  70     for file in files:
  71         if os.path.isdir(dir + '/' + file):
  72             adddir(tree, dir + '/' + file)
  73         else:
  74             tree.hlist.add(dir + '/' + file, itemtype=Tix.IMAGETEXT, text=file,
  75                            image=tree.tk.call('tix', 'getimage', 'file'))
  76
  77 if __name__ == '__main__':
  78     root = Tix.Tk()
  79     RunSample(root)
  80     root.mainloop()