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Categories / Python / GUI Tk

 

Simple Editor

from Tkinter import *  from tkSimpleDialog import askstring from tkFileDialog   import asksaveasfilename from 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()