event_firing_webdriver.py 文件源码

def __init__(self, driver, event_listener):
        """
        Creates a new instance of the EventFiringWebDriver

        :Args:
         - driver : A WebDriver instance
         - event_listener : Instance of a class that subclasses AbstractEventListener and implements it fully or partially

        Example:

        .. code-block:: python

            from selenium.webdriver import Firefox
            from selenium.webdriver.support.events import EventFiringWebDriver, AbstractEventListener

            class MyListener(AbstractEventListener):
                def before_navigate_to(self, url, driver):
                    print("Before navigate to %s" % url)
                def after_navigate_to(self, url, driver):
                    print("After navigate to %s" % url)

            driver = Firefox()
            ef_driver = EventFiringWebDriver(driver, MyListener())
            ef_driver.get("http://www.google.co.in/")
        """
        if not isinstance(driver, WebDriver):
            raise WebDriverException("A WebDriver instance must be supplied")
        if not isinstance(event_listener, AbstractEventListener):
            raise WebDriverException("Event listener must be a subclass of AbstractEventListener")
        self._driver = driver
        self._driver._wrap_value = self._wrap_value
        self._listener = event_listener