/Demo/tix/samples/DirList.py

  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
 19import Tix, os, copy
 20from Tkconstants import *
 21
 22TCL_ALL_EVENTS          = 0
 23
 24def RunSample (root):
 25    dirlist = DemoDirList(root)
 26    dirlist.mainloop()
 27    dirlist.destroy()
 28
 29class 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#
120if __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)