Find out if an element can be navigated to using the tab key

Tabbable.rb

module Tabbable
  def tagNames
    ['a', 'button', 'input', 'select', 'textarea', 'object']
  end
  
  def selectors
    ['tabindex']
  end
  
  def tabbableCssExpression
    tagNames.join(', ') + ' ' + selectors.collect{|selector| "*[#{selector}]"}.join(', ')
  end
  
  def tabbable
    return @cachedTabbableElements unless @cachedTabbableElements.nil?
    @cachedTabbableElements = all(tabbableCssExpression)
  end

  def tabbable? el
    el.native.send_keys :tab
    return true if el.text == page.driver.browser.switch_to.active_element.text
    false
  end
end

Use with:

World(Tabbable)
puts tabbable? page.find('#myDiv')
puts directlyTabbable? page.find('#myDiv')
puts tabbable