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      1 # -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
      2 #
      3 # $Id$
      4 #
      5 # Tix Demonstration 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()
     81