components.py 文件源码

def __init__(self, value=None, units=None, **kwargs):
        kwargs.setdefault('display', 'flex')
        kwargs.setdefault('flex_flow','row wrap')
        super().__init__(layout=ipy.Layout(display='flex', flex_flow='row wrap'),
                                       **process_widget_kwargs(kwargs))
        self.textbox = ipy.Text()
        self.textbox.observe(self._validate, 'value')
        self._error_msg = None

        if units is not None:
            self.dimensionality = u.get_units(units).dimensionality
        else:
            self.dimensionality = None

        self._validated_value = None
        self.validated = ipy.HTML(self.INVALID)
        self.children = [self.textbox, self.validated]
        self._is_valid = False
        if value is not None:
            self.value = value