1 # -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-

     2 #

     3 # $Id: Tree.py 36560 2004-07-18 06:16:08Z tim_one $

     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()