python通过Tkinter库实现的一个简单的文本编辑器代码，pythontkinter,## {{{ http:

python通过Tkinter库实现的一个简单的文本编辑器代码，pythontkinter,## {{{ http:

## {{{ http://code.activestate.com/recipes/578568/ (r1)from Tkinter import * from tkSimpleDialog import askstringfrom tkFileDialog   import asksaveasfilenamefrom tkMessageBox import askokcancel          class Quitter(Frame):                            def __init__(self, parent=None):                  Frame.__init__(self, parent)        self.pack()        widget = Button(self, text='Quit', command=self.quit)        widget.pack(expand=YES, fill=BOTH, side=LEFT)    def quit(self):        ans = askokcancel('Verify exit', "Really quit?")        if ans: Frame.quit(self)class ScrolledText(Frame):    def __init__(self, parent=None, text='', file=None):        Frame.__init__(self, parent)        self.pack(expand=YES, fill=BOTH)                       self.makewidgets()        self.settext(text, file)    def makewidgets(self):        sbar = Scrollbar(self)        text = Text(self, relief=SUNKEN)        sbar.config(command=text.yview)                          text.config(yscrollcommand=sbar.set)                   sbar.pack(side=RIGHT, fill=Y)                           text.pack(side=LEFT, expand=YES, fill=BOTH)             self.text = text    def settext(self, text='', file=None):        if file:             text = open(file, 'r').read()        self.text.delete('1.0', END)                           self.text.insert('1.0', text)                          self.text.mark_set(INSERT, '1.0')                      self.text.focus()                                    def gettext(self):                                       return self.text.get('1.0', END+'-1c')         class SimpleEditor(ScrolledText):                            def __init__(self, parent=None, file=None):         frm = Frame(parent)        frm.pack(fill=X)        Button(frm, text='Save',  command=self.onSave).pack(side=LEFT)        Button(frm, text='Cut',   command=self.onCut).pack(side=LEFT)        Button(frm, text='Paste', command=self.onPaste).pack(side=LEFT)        Button(frm, text='Find',  command=self.onFind).pack(side=LEFT)        Quitter(frm).pack(side=LEFT)        ScrolledText.__init__(self, parent, file=file)         self.text.config(font=('courier', 9, 'normal'))    def onSave(self):        filename = asksaveasfilename()        if filename:            alltext = self.gettext()                                  open(filename, 'w').write(alltext)              def onCut(self):        text = self.text.get(SEL_FIRST, SEL_LAST)                self.text.delete(SEL_FIRST, SEL_LAST)                   self.clipboard_clear()                      self.clipboard_append(text)    def onPaste(self):                                            try:            text = self.selection_get(selection='CLIPBOARD')            self.text.insert(INSERT, text)        except TclError:            pass                                          def onFind(self):        target = askstring('SimpleEditor', 'Search String?')        if target:            where = self.text.search(target, INSERT, END)              if where:                                                    print where                pastit = where + ('+%dc' % len(target))                  #self.text.tag_remove(SEL, '1.0', END)                     self.text.tag_add(SEL, where, pastit)                     self.text.mark_set(INSERT, pastit)                         self.text.see(INSERT)                                    self.text.focus()                        if __name__ == '__main__':    try:        SimpleEditor(file=sys.argv[1]).mainloop()       except IndexError:        SimpleEditor().mainloop()