main.py 文件源码

def update_line_numbers(self, cfrom=None):
        if self.show_lnums:
            focus_pos = self.listbox.focus_position
            lnums = self.line_nums
            lnums.set_focus(focus_pos, coming_from=cfrom)
            foc = lnums.numbers[focus_pos]

            prev = lnums.numbers[lnums.previous]
            lnums.numbers[lnums.previous] = urwid.Text(prev.text, align='right')

            lnums.numbers[focus_pos] = urwid.AttrWrap(foc, 'key')
            lnums.previous = focus_pos