37 lines
848 B
Ruby
37 lines
848 B
Ruby
# frozen_string_literal: true
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module Banzai
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module Filter
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# HTML filter that renders `color` followed by a color "chip".
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#
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class ColorFilter < HTML::Pipeline::Filter
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COLOR_CHIP_CLASS = 'gfm-color_chip'
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CSS = 'code'
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XPATH = Gitlab::Utils::Nokogiri.css_to_xpath(CSS).freeze
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def call
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doc.xpath(XPATH).each do |node|
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color = ColorParser.parse(node.content)
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node << color_chip(color) if color
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end
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doc
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end
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private
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def color_chip(color)
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checkerboard = doc.document.create_element('span', class: COLOR_CHIP_CLASS)
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chip = doc.document.create_element('span', style: inline_styles(color: color))
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checkerboard << chip
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end
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def inline_styles(color:)
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"background-color: #{color};"
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end
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end
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end
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end
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