cfg.py 文件源码

def __init__(self, parent, cfg=None, set_cfg_callback=None):
        self._parent = parent
        if cfg is not None: self._cfg = cfg
        else: self._cfg = CFG(Nonterminal('S'), [])
        self._set_cfg_callback = set_cfg_callback

        self._highlight_matching_nonterminals = 1

        # Create the top-level window.
        self._top = Toplevel(parent)
        self._init_bindings()

        self._init_startframe()
        self._startframe.pack(side='top', fill='x', expand=0)
        self._init_prodframe()
        self._prodframe.pack(side='top', fill='both', expand=1)
        self._init_buttons()
        self._buttonframe.pack(side='bottom', fill='x', expand=0)

        self._textwidget.focus()