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1# -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
2#
3#       $Id$
4#
5# Tix Demonstration 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)
118