Demo/tix/samples/DirList.py

   1 # -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
   2 #
   3 #       $Id$
   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)