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Editing: tkFileDialog.py
# # Instant Python # $Id: tkFileDialog.py 36560 2004-07-18 06:16:08Z tim_one $ # # 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 # # - multiple: if true user may select more than one file # # 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 # convert Tcl path objects to strings try: result = result.string except AttributeError: # it already is a string pass 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" def _fixresult(self, widget, result): if isinstance(result, tuple): # multiple results: result = tuple([getattr(r, "string", r) for r in result]) if result: import os path, file = os.path.split(result[0]) self.options["initialdir"] = path # don't set initialfile or filename, as we have multiple of these return result if not widget.tk.wantobjects() and "multiple" in self.options: # Need to split result explicitly return self._fixresult(widget, widget.tk.splitlist(result)) return _Dialog._fixresult(self, widget, result) 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: # convert Tcl path objects to strings try: result = result.string except AttributeError: # it already is a string pass # 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() def askopenfilenames(**options): """Ask for multiple filenames to open Returns a list of filenames or empty list if cancel button selected """ options["multiple"]=1 return Open(**options).show() # FIXME: are the following 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 askopenfiles(mode = "r", **options): """Ask for multiple filenames and return the open file objects returns a list of open file objects or an empty list if cancel selected """ files = askopenfilenames(**options) if files: ofiles=[] for filename in files: ofiles.append(open(filename, mode)) files=ofiles return files 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" import sys # See whether CODESET is defined try: import locale locale.setlocale(locale.LC_ALL,'') enc = locale.nl_langinfo(locale.CODESET) except (ImportError, AttributeError): pass # dialog for openening files openfilename=askopenfilename(filetypes=[("all files", "*")]) try: fp=open(openfilename,"r") fp.close() except: print "Could not open File: " print sys.exc_info()[1] print "open", openfilename.encode(enc) # dialog for saving files saveasfilename=asksaveasfilename() print "saveas", saveasfilename.encode(enc)
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