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Versions: 8
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Contents
# frozen_string_literal: true
module ThemeCheck
# Reports errors when trying to use parser-blocking script tags
class ImgWidthAndHeight < HtmlCheck
severity :error
categories :html, :performance
doc docs_url(__FILE__)
ENDS_IN_CSS_UNIT = /(cm|mm|in|px|pt|pc|em|ex|ch|rem|vw|vh|vmin|vmax|%)$/i
def on_img(node)
width = node.attributes["width"]&.value
height = node.attributes["height"]&.value
record_units_in_field_offenses("width", width, node: node)
record_units_in_field_offenses("height", height, node: node)
return if node.attributes["src"].nil? || (width && height)
missing_width = width.nil?
missing_height = height.nil?
error_message = if missing_width && missing_height
"Missing width and height attributes"
elsif missing_width
"Missing width attribute"
elsif missing_height
"Missing height attribute"
end
add_offense(error_message, node: node)
end
private
def record_units_in_field_offenses(attribute, value, node:)
return unless value =~ ENDS_IN_CSS_UNIT
value_without_units = value.gsub(ENDS_IN_CSS_UNIT, '')
add_offense(
"The #{attribute} attribute does not take units. Replace with \"#{value_without_units}\".",
node: node,
)
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems