Class: ERBLint::Linters::GitHub::Accessibility::NestedInteractiveElements

Inherits:
Linter
  • Object
show all
Includes:
CustomHelpers, LinterRegistry
Defined in:
lib/erblint-github/linters/github/accessibility/nested_interactive_elements.rb

Constant Summary collapse

MESSAGE = 
"Nesting interactive elements produces invalid HTML, and ssistive technologies, such as screen readers, might ignore or respond unexpectedly to such nested controls."

Constants included from CustomHelpers

CustomHelpers::INTERACTIVE_ELEMENTS

Instance Method Summary collapse

Methods included from CustomHelpers

#basic_conditional_code_check, #counter_correct?, #focusable?, #generate_offense, #generate_offense_from_source_range, #possible_attribute_values, #simple_class_name, #tags

Instance Method Details

#run(processed_source) ⇒ Object 



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# File 'lib/erblint-github/linters/github/accessibility/nested_interactive_elements.rb', line 15

def run(processed_source)
  last_interactive_element = nil
  tags(processed_source).each do |tag|
    next unless INTERACTIVE_ELEMENTS.include?(tag.name)

    last_interactive_element = nil if last_interactive_element && tag.name == last_interactive_element.name && tag.closing?
    next if tag.closing?

    if last_interactive_element
      next if last_interactive_element.name == "summary" && tag.name == "a"
      next if tag.name == "input" && tag.attributes["type"]&.value == "hidden"

      message = "Found <#{tag.name}> nested inside of <#{last_interactive_element.name}>.\n" + MESSAGE
      generate_offense(self.class, processed_source, tag, message)
    end

    last_interactive_element = tag unless tag&.name == "input"
  end
end