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

     2 #

     3 #       $Id: DirList.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 using tixwish.

    12 

    13 # This file demonstrates the use of the tixDirList widget -- you can

    14 # use it for the user to select a directory. For example, an installation

    15 # program can use the tixDirList widget to ask the user to select the

    16 # installation directory for an application.

    17 #

    18 

    19 import Tix, os, copy

    20 from Tkconstants import *

    21 

    22 TCL_ALL_EVENTS          = 0

    23 

    24 def RunSample (root):

    25     dirlist = DemoDirList(root)

    26     dirlist.mainloop()

    27     dirlist.destroy()

    28 

    29 class DemoDirList:

    30     def __init__(self, w):

    31         self.root = w

    32         self.exit = -1

    33 

    34         z = w.winfo_toplevel()

    35         z.wm_protocol("WM_DELETE_WINDOW", lambda self=self: self.quitcmd())

    36 

    37         # Create the tixDirList and the tixLabelEntry widgets on the on the top

    38         # of the dialog box

    39 

    40         # bg = root.tk.eval('tix option get bg')

    41         # adding bg=bg crashes Windows pythonw tk8.3.3 Python 2.1.0

    42 

    43         top = Tix.Frame( w, relief=RAISED, bd=1)

    44 

    45         # Create the DirList widget. By default it will show the current

    46         # directory

    47         #

    48         #

    49         top.dir = Tix.DirList(top)

    50         top.dir.hlist['width'] = 40

    51 

    52         # When the user presses the ".." button, the selected directory

    53         # is "transferred" into the entry widget

    54         #

    55         top.btn = Tix.Button(top, text = "  >>  ", pady = 0)

    56 

    57         # We use a LabelEntry to hold the installation directory. The user

    58         # can choose from the DirList widget, or he can type in the directory

    59         # manually

    60         #

    61         top.ent = Tix.LabelEntry(top, label="Installation Directory:",

    62                                   labelside = 'top',

    63                                   options = '''

    64                                   entry.width 40

    65                                   label.anchor w

    66                                   ''')

    67 

    68         font = self.root.tk.eval('tix option get fixed_font')

    69         # font = self.root.master.tix_option_get('fixed_font')

    70         top.ent.entry['font'] = font

    71 

    72         self.dlist_dir = copy.copy(os.curdir)

    73         # This should work setting the entry's textvariable

    74         top.ent.entry['textvariable'] = self.dlist_dir

    75         top.btn['command'] = lambda dir=top.dir, ent=top.ent, self=self: \

    76                              self.copy_name(dir,ent)

    77 

    78         # top.ent.entry.insert(0,'tix'+repr(self))

    79         top.ent.entry.bind('<Return>', lambda self=self: self.okcmd () )

    80 

    81         top.pack( expand='yes', fill='both', side=TOP)

    82         top.dir.pack( expand=1, fill=BOTH, padx=4, pady=4, side=LEFT)

    83         top.btn.pack( anchor='s', padx=4, pady=4, side=LEFT)

    84         top.ent.pack( expand=1, fill=X, anchor='s', padx=4, pady=4, side=LEFT)

    85 

    86         # Use a ButtonBox to hold the buttons.

    87         #

    88         box = Tix.ButtonBox (w, orientation='horizontal')

    89         box.add ('ok', text='Ok', underline=0, width=6,

    90                      command = lambda self=self: self.okcmd () )

    91         box.add ('cancel', text='Cancel', underline=0, width=6,

    92                      command = lambda self=self: self.quitcmd () )

    93 

    94         box.pack( anchor='s', fill='x', side=BOTTOM)

    95 

    96     def copy_name (self, dir, ent):

    97         # This should work as it is the entry's textvariable

    98         self.dlist_dir = dir.cget('value')

    99         # but it isn't so I'll do it manually

   100         ent.entry.delete(0,'end')

   101         ent.entry.insert(0, self.dlist_dir)

   102 

   103     def okcmd (self):

   104         # tixDemo:Status "You have selected the directory" + self.dlist_dir

   105         self.quitcmd()

   106 

   107     def quitcmd (self):

   108         self.exit = 0

   109 

   110     def mainloop(self):

   111         while self.exit < 0:

   112             self.root.tk.dooneevent(TCL_ALL_EVENTS)

   113 

   114     def destroy (self):

   115         self.root.destroy()

   116 

   117 # This "if" statement makes it possible to run this script file inside or

   118 # outside of the main demo program "tixwidgets.py".

   119 #

   120 if __name__== '__main__' :

   121     import tkMessageBox, traceback

   122 

   123     try:

   124         root=Tix.Tk()

   125         RunSample(root)

   126     except:

   127         t, v, tb = sys.exc_info()

   128         text = "Error running the demo script:\n"

   129         for line in traceback.format_exception(t,v,tb):

   130             text = text + line + '\n'

   131             d = tkMessageBox.showerror ( 'Tix Demo Error', text)