# -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-##       $Id: DirTree.py 36560 2004-07-18 06:16:08Z tim_one $## Tix Demostration Program## This sample program is structured in such a way so that it can be# executed from the Tix demo program "tixwidgets.py":  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 using tixwish. # This file demonstrates the use of the tixDirTree widget -- you can# use it for the user to select a directory. For example, an installation# program can use the tixDirTree widget to ask the user to select the# installation directory for an application.# import Tix, os, copyfrom Tkconstants import * TCL_ALL_EVENTS          = 0 def RunSample (root):    dirtree = DemoDirTree(root)    dirtree.mainloop()    dirtree.destroy() class DemoDirTree:    def __init__(self, w):        self.root = w        self.exit = -1         z = w.winfo_toplevel()        z.wm_protocol("WM_DELETE_WINDOW", lambda self=self: self.quitcmd())         # Create the tixDirTree and the tixLabelEntry widgets on the on the top        # of the dialog box         # bg = root.tk.eval('tix option get bg')        # adding bg=bg crashes Windows pythonw tk8.3.3 Python 2.1.0         top = Tix.Frame( w, relief=RAISED, bd=1)         # Create the DirTree widget. By default it will show the current        # directory        #        #        top.dir = Tix.DirTree(top)        top.dir.hlist['width'] = 40         # When the user presses the ".." button, the selected directory        # is "transferred" into the entry widget        #        top.btn = Tix.Button(top, text = "  >>  ", pady = 0)         # We use a LabelEntry to hold the installation directory. The user        # can choose from the DirTree widget, or he can type in the directory        # manually        #        top.ent = Tix.LabelEntry(top, label="Installation Directory:",                                  labelside = 'top',                                  options = '''                                  entry.width 40                                  label.anchor w                                  ''')         self.dlist_dir = copy.copy(os.curdir)        top.ent.entry['textvariable'] = self.dlist_dir        top.btn['command'] = lambda dir=top.dir, ent=top.ent, self=self: \                             self.copy_name(dir,ent)         top.ent.entry.bind('<Return>', lambda self=self: self.okcmd () )         top.pack( expand='yes', fill='both', side=TOP)        top.dir.pack( expand=1, fill=BOTH, padx=4, pady=4, side=LEFT)        top.btn.pack( anchor='s', padx=4, pady=4, side=LEFT)        top.ent.pack( expand=1, fill=X, anchor='s', padx=4, pady=4, side=LEFT)         # Use a ButtonBox to hold the buttons.        #        box = Tix.ButtonBox (w, orientation='horizontal')        box.add ('ok', text='Ok', underline=0, width=6,                     command = lambda self=self: self.okcmd () )        box.add ('cancel', text='Cancel', underline=0, width=6,                     command = lambda self=self: self.quitcmd () )         box.pack( anchor='s', fill='x', side=BOTTOM)     def copy_name (self, dir, ent):        # This should work as it is the entry's textvariable        self.dlist_dir = dir.cget('value')        # but it isn't so I'll do it manually        ent.entry.delete(0,'end')        ent.entry.insert(0, self.dlist_dir)     def okcmd (self):        # tixDemo:Status "You have selected the directory" + self.dlist_dir        self.quitcmd()     def quitcmd (self):        # tixDemo:Status "You have selected the directory" + self.dlist_dir        self.exit = 0     def mainloop(self):        while self.exit < 0:            self.root.tk.dooneevent(TCL_ALL_EVENTS)     def destroy (self):        self.root.destroy() # This "if" statement makes it possible to run this script file inside or# outside of the main demo program "tixwidgets.py".#if __name__== '__main__' :    root=Tix.Tk()    RunSample(root)