Class: Watir::Locators::Element::SelectorBuilder::XPath

Inherits:
Object
  • Object
show all
Defined in:
lib/watir-webdriver/locators/element/selector_builder/xpath.rb

Instance Method Summary collapse

Constructor Details

#initialize(should_use_label_element) ⇒ XPath

Returns a new instance of XPath.



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# File 'lib/watir-webdriver/locators/element/selector_builder/xpath.rb', line 6

def initialize(should_use_label_element)
  @should_use_label_element = should_use_label_element
end

Instance Method Details

#attribute_expression(building, selectors) ⇒ Object

TODO:

Get rid of building



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# File 'lib/watir-webdriver/locators/element/selector_builder/xpath.rb', line 27

def attribute_expression(building, selectors)
  f = selectors.map do |key, val|
    if val.is_a?(Array)
      "(" + val.map { |v| equal_pair(building, key, v) }.join(" or ") + ")"
    else
      equal_pair(building, key, val)
    end
  end
  f.join(" and ")
end

#build(selectors) ⇒ Object 



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# File 'lib/watir-webdriver/locators/element/selector_builder/xpath.rb', line 10

def build(selectors)
  xpath = ".//"
  xpath << (selectors.delete(:tag_name) || '*').to_s

  selectors.delete :index

  # the remaining entries should be attributes
  unless selectors.empty?
    xpath << "[" << attribute_expression(nil, selectors) << "]"
  end

  p xpath: xpath, selectors: selectors if $DEBUG

  [:xpath, xpath]
end

#equal_pair(building, key, value) ⇒ Object

TODO:

Get rid of building



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# File 'lib/watir-webdriver/locators/element/selector_builder/xpath.rb', line 39

def equal_pair(building, key, value)
  if key == :class
    klass = XpathSupport.escape " #{value} "
    "contains(concat(' ', @class, ' '), #{klass})"
  elsif key == :label && @should_use_label_element
    # we assume :label means a corresponding label element, not the attribute
    text = "normalize-space()=#{XpathSupport.escape value}"
    "(@id=//label[#{text}]/@for or parent::label[#{text}])"
  else
    "#{lhs_for(building, key)}=#{XpathSupport.escape value}"
  end
end

#lhs_for(_building, key) ⇒ Object

TODO:

Get rid of building



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# File 'lib/watir-webdriver/locators/element/selector_builder/xpath.rb', line 53

def lhs_for(_building, key)
  case key
  when :text, 'text'
    'normalize-space()'
  when :href
    # TODO: change this behaviour?
    'normalize-space(@href)'
  when :type
    # type attributes can be upper case - downcase them
    # https://github.com/watir/watir-webdriver/issues/72
    XpathSupport.downcase('@type')
  else
    "@#{key.to_s.tr("_", "-")}"
  end
end