Accessing Shadow DOM tree with Selenium

Question

Is it possible to access elements within a Shadow DOM using Selenium/Chrome webdriver?

Using the normal element search methods doesn\'t work, as is to be expected.

Answer 1

For getting the filename of the latest downloaded file in Chrome

def get_downloaded_file(self):
  filename = self._driver.execute_script("return document.querySelector('downloads-manager').shadowRoot.querySelector('#downloadsList downloads-item').shadowRoot.querySelector('div#content  #file-link').text")
  return filename

Usage:

driver.get_url('chrome://downloads')
filename = driver.get_downloaded_file()

And for configuring the option for setting the default download directory in selenium for chrome browser, where the corresponding file could be gotten:

..
chrome_options = webdriver.ChromeOptions()
..
prefs = {'download.default_directory': '/desired-path-to-directory'} # unix
chrome_options.add_experimental_option('prefs', prefs)
..