Class: DotDiff::ElementHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/dotdiff/element_handler.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(driver, elements = DotDiff.xpath_elements_to_hide) ⇒ ElementHandler

Returns a new instance of ElementHandler.



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# File 'lib/dotdiff/element_handler.rb', line 7

def initialize(driver, elements = DotDiff.xpath_elements_to_hide)
  @driver = driver
  @elements = elements
end

Instance Attribute Details

#driver ⇒ Object

Returns the value of attribute driver.



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# File 'lib/dotdiff/element_handler.rb', line 5

def driver
  @driver
end

Instance Method Details

#elements ⇒ Object 



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# File 'lib/dotdiff/element_handler.rb', line 38

def elements
  @elements ||= []
end

#hide ⇒ Object 



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# File 'lib/dotdiff/element_handler.rb', line 12

def hide
  elements.each do |xpath|
    driver.execute_script(script(xpath, :hidden))
  end
end

#script(xpath, visibility) ⇒ Object 



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# File 'lib/dotdiff/element_handler.rb', line 24

def script(xpath, visibility)
  xpath += if visibility == :hidden
             "[not(contains(@style, 'visibility'))]"
           else
             "[contains(@style, 'visibility: hidden')]"
           end

  # this is done like so instead of a single pass over all elements due to a bug in Firefox:
  # https://greasyfork.org/en/forum/discussion/12223/xpath-iteratenext-fails-in-firefox
  "var elem; while (elem = document.evaluate(\"#{xpath}\", document, "\
    'null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null).iterateNext()) '\
    "{ elem.style.visibility = '#{visibility}'; }"
end

#show ⇒ Object 



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# File 'lib/dotdiff/element_handler.rb', line 18

def show
  elements.each do |xpath|
    driver.execute_script(script(xpath, :''))
  end
end