import osfrom Tkinter import *import tkMessageBox  class FileList:     from EditorWindow import EditorWindow  # class variable, may be overridden                                           # e.g. by PyShellFileList     def __init__(self, root):        self.root = root        self.dict = {}        self.inversedict = {}        self.vars = {} # For EditorWindow.getrawvar (shared Tcl variables)     def open(self, filename, action=None):        assert filename        filename = self.canonize(filename)        if os.path.isdir(filename):            # This can happen when bad filename is passed on command line:            tkMessageBox.showerror(                "File Error",                "%r is a directory." % (filename,),                master=self.root)            return None        key = os.path.normcase(filename)        if self.dict.has_key(key):            edit = self.dict[key]            edit.top.wakeup()            return edit        if action:            # Don't create window, perform 'action', e.g. open in same window            return action(filename)        else:            return self.EditorWindow(self, filename, key)     def gotofileline(self, filename, lineno=None):        edit = self.open(filename)        if edit is not None and lineno is not None:            edit.gotoline(lineno)     def new(self, filename=None):        return self.EditorWindow(self, filename)     def close_all_callback(self, event):        for edit in self.inversedict.keys():            reply = edit.close()            if reply == "cancel":                break        return "break"     def close_edit(self, edit):        try:            key = self.inversedict[edit]        except KeyError:            print "Don't know this EditorWindow object.  (close)"            return        if key:            del self.dict[key]        del self.inversedict[edit]        if not self.inversedict:            self.root.quit()     def filename_changed_edit(self, edit):        edit.saved_change_hook()        try:            key = self.inversedict[edit]        except KeyError:            print "Don't know this EditorWindow object.  (rename)"            return        filename = edit.io.filename        if not filename:            if key:                del self.dict[key]            self.inversedict[edit] = None            return        filename = self.canonize(filename)        newkey = os.path.normcase(filename)        if newkey == key:            return        if self.dict.has_key(newkey):            conflict = self.dict[newkey]            self.inversedict[conflict] = None            tkMessageBox.showerror(                "Name Conflict",                "You now have multiple edit windows open for %r" % (filename,),                master=self.root)        self.dict[newkey] = edit        self.inversedict[edit] = newkey        if key:            try:                del self.dict[key]            except KeyError:                pass     def canonize(self, filename):        if not os.path.isabs(filename):            try:                pwd = os.getcwd()            except os.error:                pass            else:                filename = os.path.join(pwd, filename)        return os.path.normpath(filename)  def _test():    from EditorWindow import fixwordbreaks    import sys    root = Tk()    fixwordbreaks(root)    root.withdraw()    flist = FileList(root)    if sys.argv[1:]:        for filename in sys.argv[1:]:            flist.open(filename)    else:        flist.new()    if flist.inversedict:        root.mainloop() if __name__ == '__main__':    _test()