/Demo/tix/samples/DirTree.py

  1# -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
  2#
  3#       $Id: DirTree.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 tixDirTree widget -- you can
 14# use it for the user to select a directory. For example, an installation
 15# program can use the tixDirTree widget to ask the user to select the
 16# installation directory for an application.
 17#
 18
 19import Tix, os, copy
 20from Tkconstants import *
 21
 22TCL_ALL_EVENTS          = 0
 23
 24def RunSample (root):
 25    dirtree = DemoDirTree(root)
 26    dirtree.mainloop()
 27    dirtree.destroy()
 28
 29class DemoDirTree:
 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 tixDirTree 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 DirTree widget. By default it will show the current
 46        # directory
 47        #
 48        #
 49        top.dir = Tix.DirTree(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 DirTree 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        self.dlist_dir = copy.copy(os.curdir)
 69        top.ent.entry['textvariable'] = self.dlist_dir
 70        top.btn['command'] = lambda dir=top.dir, ent=top.ent, self=self: \
 71                             self.copy_name(dir,ent)
 72
 73        top.ent.entry.bind('<Return>', lambda self=self: self.okcmd () )
 74
 75        top.pack( expand='yes', fill='both', side=TOP)
 76        top.dir.pack( expand=1, fill=BOTH, padx=4, pady=4, side=LEFT)
 77        top.btn.pack( anchor='s', padx=4, pady=4, side=LEFT)
 78        top.ent.pack( expand=1, fill=X, anchor='s', padx=4, pady=4, side=LEFT)
 79
 80        # Use a ButtonBox to hold the buttons.
 81        #
 82        box = Tix.ButtonBox (w, orientation='horizontal')
 83        box.add ('ok', text='Ok', underline=0, width=6,
 84                     command = lambda self=self: self.okcmd () )
 85        box.add ('cancel', text='Cancel', underline=0, width=6,
 86                     command = lambda self=self: self.quitcmd () )
 87
 88        box.pack( anchor='s', fill='x', side=BOTTOM)
 89
 90    def copy_name (self, dir, ent):
 91        # This should work as it is the entry's textvariable
 92        self.dlist_dir = dir.cget('value')
 93        # but it isn't so I'll do it manually
 94        ent.entry.delete(0,'end')
 95        ent.entry.insert(0, self.dlist_dir)
 96
 97    def okcmd (self):
 98        # tixDemo:Status "You have selected the directory" + self.dlist_dir
 99        self.quitcmd()
100
101    def quitcmd (self):
102        # tixDemo:Status "You have selected the directory" + self.dlist_dir
103        self.exit = 0
104
105    def mainloop(self):
106        while self.exit < 0:
107            self.root.tk.dooneevent(TCL_ALL_EVENTS)
108
109    def destroy (self):
110        self.root.destroy()
111
112# This "if" statement makes it possible to run this script file inside or
113# outside of the main demo program "tixwidgets.py".
114#
115if __name__== '__main__' :
116    root=Tix.Tk()
117    RunSample(root)