Class: ERBLint::Linters::GitHub::Accessibility::NoRedundantImageAlt

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

Constant Summary collapse

MESSAGE = 
"<img> alt prop should not contain `image` or `picture` as screen readers already announce the element as an image"
REDUNDANT_ALT_WORDS = 
%w[image picture].freeze

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/no_redundant_image_alt.rb', line 16

def run(processed_source)
  tags(processed_source).each do |tag|
    next if tag.name != "img"
    next if tag.closing?

    alt = possible_attribute_values(tag, "alt").join
    next if alt.empty?

    generate_offense(self.class, processed_source, tag) if (alt.downcase.split & REDUNDANT_ALT_WORDS).any?
  end
end