Tree.py :  » Language-Interface » ChinesePython » chinesepython2.1.3-0.4 » Demo » tix » samples » Python Open Source

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Python Open Source » Language Interface » ChinesePython 
ChinesePython » chinesepython2.1.3 0.4 » Demo » tix » samples » Tree.py
#!/usr/local/bin/python
# 
# $Id: Tree.py,v 1.2 2002/04/12 09:44:02 sof34 Exp $
#
# Tix Demostration Program
#
# This sample program is structured in such a way so that it can be
# executed from the Tix demo program "tixwidgets": it must have a
# procedure called "RunSample". It should also have the "if" statment
# at the end of this file so that it can be run as a standalone
# program.

# This file demonstrates how to use the TixTree widget to display
# dynamic hierachical data (the files in the Unix file system)
#

import Tix, os

def RunSample(w):
    top = Tix.Frame(w, relief=Tix.RAISED, bd=1)
    tree = Tix.Tree(top, options='separator "/"')
    tree.pack(expand=1, fill=Tix.BOTH, padx=10, pady=10, side=Tix.LEFT)
    tree['opencmd'] = lambda dir=None, w=tree: opendir(w, dir)

    # The / directory is added in the "open" mode. The user can open it
    # and then browse its subdirectories ...
    adddir(tree, "/")

    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
    box.add('ok', text='Ok', underline=0, command=w.destroy, width=6)
    box.add('cancel', text='Cancel', underline=0, command=w.destroy, width=6)
    box.pack(side=Tix.BOTTOM, fill=Tix.X)
    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)

def adddir(tree, dir):
    if dir == '/':
  text = '/'
    else:
  text = os.path.basename(dir)
    tree.hlist.add(dir, itemtype=Tix.IMAGETEXT, text=text,
       image=tree.tk.call('tix', 'getimage', 'folder'))
    try:
  os.listdir(dir)
  tree.setmode(dir, 'open')
    except os.error:
  # No read permission ?
  pass

# This function is called whenever the user presses the (+) indicator or
# double clicks on a directory whose mode is "open". It loads the files
# inside that directory into the Tree widget.
#
# Note we didn't specify the closecmd option for the Tree widget, so it
# performs the default action when the user presses the (-) indicator or
# double clicks on a directory whose mode is "close": hide all of its child
# entries
def opendir(tree, dir):
    entries = tree.hlist.info_children(dir)
    if entries:
  # We have already loaded this directory. Let's just
  # show all the child entries
  #
  # Note: since we load the directory only once, it will not be
  #       refreshed if the you add or remove files from this
  #  directory.
  #
  for entry in entries:
      tree.hlist.show_entry(entry)
    files = os.listdir(dir)
    for file in files:
  if os.path.isdir(dir + '/' + file):
      adddir(tree, dir + '/' + file)
  else:
      tree.hlist.add(dir + '/' + file, itemtype=Tix.IMAGETEXT, text=file,
         image=tree.tk.call('tix', 'getimage', 'file'))

if __name__ == '__main__':
    root = Tix.Tk()
    RunSample(root)
    root.mainloop()
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