PyGTK: Copy, Cut, Paste, Select All with TextView

##### Make a class or global clipboard with gtk.Clipboard #####

#Copy
buff = self.text_view.get_buffer()
buff.copy_clipboard(self.clipboard)

#Cut
buff = self.text_view.get_buffer()
editable = self.text_view.get_editable()
buff.cut_clipboard(self.clipboard, editable)

# Paste
buff = self.text_view.get_buffer()
editable = self.text_view.get_editable()
pos = buff.get_iter_at_mark(buff.get_insert())
buff.paste_clipboard(self.clipboard, pos, editable)

#Select All
buff = self.text_view.get_buffer()
buff.select_range(buff.get_start_iter(), buff.get_end_iter())