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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def xross_listener(http_method=None, **xross_attrs):
 """Instructs xross to handle AJAX calls right from the moment it is called. This should be placed in a view decorated with `@xross_view()`. :param str http_method: GET or POST. To be used as a source of data for xross. :param dict xross_attrs: xross handler attributes. Those attributes will be available in operation functions in `xross` keyword argument. """

    handler = currentframe().f_back.f_locals['request']._xross_handler
    handler.set_attrs(**xross_attrs)
    if http_method is not None:
        handler.http_method = http_method
    handler.dispatch()