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 "widget": 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_DONT_WAIT           = 1<<1
  23 TCL_WINDOW_EVENTS       = 1<<2
  24 TCL_FILE_EVENTS         = 1<<3
  25 TCL_TIMER_EVENTS        = 1<<4
  26 TCL_IDLE_EVENTS         = 1<<5
  27 TCL_ALL_EVENTS          = 0
  28
  29 def RunSample (root):
  30     global dirlist
  31     dirlist = DemoDirList(root)
  32     dirlist.mainloop()
  33     dirlist.destroy()
  34
  35 class DemoDirList:
  36     def __init__(self, w):
  37         self.root = w
  38         self.exit = -1
  39
  40         z = w.winfo_toplevel()
  41         z.wm_title('Tix.DirList Widget Demo')
  42
  43         # Create the tixDirList and the tixLabelEntry widgets on the on the top
  44         # of the dialog box
  45
  46         # bg = root.tk.eval('tix option get bg')
  47         # adding bg=bg crashes Windows pythonw tk8.3.3 Python 2.1.0
  48
  49         top = Tix.Frame( w, relief=RAISED, bd=1)
  50
  51         # Create the DirList widget. By default it will show the current
  52         # directory
  53         #
  54         #
  55         top.dir = Tix.DirList(top)
  56         top.dir.hlist['width'] = 40
  57
  58         # When the user presses the ".." button, the selected directory
  59         # is "transferred" into the entry widget
  60         #
  61         top.btn = Tix.Button(top, text = "  >>  ", pady = 0)
  62
  63         # We use a LabelEntry to hold the installation directory. The user
  64         # can choose from the DirList widget, or he can type in the directory
  65         # manually
  66         #
  67         top.ent = Tix.LabelEntry(top, label="Installation Directory:",
  68                                   labelside = 'top',
  69                                   options = '''
  70                                   entry.width 40
  71                                   label.anchor w
  72                                   ''')
  73
  74         font = self.root.tk.eval('tix option get fixed_font')
  75         # font = self.root.master.tix_option_get('fixed_font')
  76         top.ent.entry['font'] = font
  77
  78         self.dlist_dir = copy.copy(os.curdir)
  79         # This should work setting the entry's textvariable
  80         top.ent.entry['textvariable'] = self.dlist_dir
  81         top.btn['command'] = lambda dir=top.dir, ent=top.ent, self=self: \
  82                              self.copy_name(dir,ent)
  83
  84         # top.ent.entry.insert(0,'tix'+`self`)
  85         top.ent.entry.bind('<Return>', lambda self=self: self.okcmd () )
  86
  87         top.pack( expand='yes', fill='both', side=TOP)
  88         top.dir.pack( expand=1, fill=BOTH, padx=4, pady=4, side=LEFT)
  89         top.btn.pack( anchor='s', padx=4, pady=4, side=LEFT)
  90         top.ent.pack( expand=1, fill=X, anchor='s', padx=4, pady=4, side=LEFT)
  91
  92         # Use a ButtonBox to hold the buttons.
  93         #
  94         box = Tix.ButtonBox (w, orientation='horizontal')
  95         box.add ('ok', text='Ok', underline=0, width=6,
  96                      command = lambda self=self: self.okcmd () )
  97         box.add ('cancel', text='Cancel', underline=0, width=6,
  98                      command = lambda self=self: self.quitcmd () )
  99
 100         box.pack( anchor='s', fill='x', side=BOTTOM)
 101         z.wm_protocol("WM_DELETE_WINDOW", lambda self=self: self.quitcmd())
 102
 103     def copy_name (self, dir, ent):
 104         # This should work as it is the entry's textvariable
 105         self.dlist_dir = dir.cget('value')
 106         # but it isn't so I'll do it manually
 107         ent.entry.delete(0,'end')
 108         ent.entry.insert(0, self.dlist_dir)
 109
 110     def okcmd (self):
 111         # tixDemo:Status "You have selected the directory" + $self.dlist_dir
 112
 113         self.quitcmd()
 114
 115     def quitcmd (self):
 116         # self.root.destroy()
 117         self.exit = 0
 118
 119     def mainloop(self):
 120         while self.exit < 0:
 121             self.root.tk.dooneevent(TCL_ALL_EVENTS)
 122         # self.root.tk.dooneevent(TCL_DONT_WAIT)
 123
 124     def destroy (self):
 125         self.root.destroy()
 126
 127 # This "if" statement makes it possible to run this script file inside or
 128 # outside of the main demo program "widget".
 129 #
 130 if __name__== '__main__' :
 131     import tkMessageBox, traceback
 132
 133     try:
 134         root=Tix.Tk()
 135         RunSample(root)
 136     except:
 137         t, v, tb = sys.exc_info()
 138         text = "Error running the demo script:\n"
 139         for line in traceback.format_exception(t,v,tb):
 140             text = text + line + '\n'
 141             d = tkMessageBox.showerror ( 'Tix Demo Error', text)
 142