core.py 文件源码

def _window(self):
        """Return the view that should receive any actions."""
        window = None
        try:
            window = self.window
        except AttributeError:
            try:
                window = self.view.window()
            except AttributeError:
                raise AttributeError(
                    'ViCommandMixin must be used with a TextCommand or a WindowCommand class')
        return window