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#
# Instant Python
# $Id$
#
# tk common file dialogues
#
# this module provides interfaces to the native file dialogues
# available in Tk 4.2 and newer, and the directory dialogue available
# in Tk 8.3 and newer.
#
# written by Fredrik Lundh, May 1997.
#
#
# options (all have default values):
#
# - defaultextension: added to filename if not explicitly given
#
# - filetypes: sequence of (label, pattern) tuples. the same pattern
# may occur with several patterns. use "*" as pattern to indicate
# all files.
#
# - initialdir: initial directory. preserved by dialog instance.
#
# - initialfile: initial file (ignored by the open dialog). preserved
# by dialog instance.
#
# - parent: which window to place the dialog on top of
#
# - title: dialog title
#
# options for the directory chooser:
#
# - initialdir, parent, title: see above
#
# - mustexist: if true, user must pick an existing directory
#
from tkCommonDialog import Dialog
class _Dialog(Dialog):
def _fixoptions(self):
try:
# make sure "filetypes" is a tuple
self.options["filetypes"] = tuple(self.options["filetypes"])
except KeyError:
pass
def _fixresult(self, widget, result):
if result:
# keep directory and filename until next time
import os
path, file = os.path.split(result)
self.options["initialdir"] = path
self.options["initialfile"] = file
self.filename = result # compatibility
return result
#
# file dialogs
class Open(_Dialog):
"Ask for a filename to open"
command = "tk_getOpenFile"
class SaveAs(_Dialog):
"Ask for a filename to save as"
command = "tk_getSaveFile"
# the directory dialog has its own _fix routines.
class Directory(Dialog):
"Ask for a directory"
command = "tk_chooseDirectory"
def _fixresult(self, widget, result):
if result:
# keep directory until next time
self.options["initialdir"] = result
self.directory = result # compatibility
return result
#
# convenience stuff
def askopenfilename(**options):
"Ask for a filename to open"
return Open(**options).show()
def asksaveasfilename(**options):
"Ask for a filename to save as"
return SaveAs(**options).show()
# FIXME: are the following two perhaps a bit too convenient?
def askopenfile(mode = "r", **options):
"Ask for a filename to open, and returned the opened file"
filename = Open(**options).show()
if filename:
return open(filename, mode)
return None
def asksaveasfile(mode = "w", **options):
"Ask for a filename to save as, and returned the opened file"
filename = SaveAs(**options).show()
if filename:
return open(filename, mode)
return None
def askdirectory (**options):
"Ask for a directory, and return the file name"
return Directory(**options).show()
# --------------------------------------------------------------------
# test stuff
if __name__ == "__main__":
# Since the file name may contain non-ASCII characters, we need
# to find an encoding that likely supports the file name, and
# displays correctly on the terminal.
# Start off with UTF-8
enc = "utf-8"
# See whether CODESET is defined
try:
import locale
enc = locale.nl_langinfo(locale.CODESET)
except (ImportError, AttributeError):
pass
print "open", askopenfilename(filetypes=[("all files", "*")]).encode(enc)
print "saveas", asksaveasfilename().encode(enc)
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