Sha256: 31a4e9c7520bf92ca6995e8d1fc2b8e21079a249e85947bb9921aafd0750ad55
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Size: 1.76 KB
Versions: 21
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Contents
module Nexmo
module OAS
module Renderer
module Filters
class Heading < Banzai::Filter
def call(input)
@input = input
@headings = []
heading_tag_list = %w[h1 h2 h3 h4 h5 h6]
headings = document.children.select do |child|
heading_tag_list.include? child.name
end
headings.each do |heading|
parameterized_heading = parameterized_heading_without_collision(heading)
heading['id'] = parameterized_heading
heading['data-id'] = SecureRandom.hex
heading['class'] = heading[:class]
heading['class'] += ' Vlt-title--icon'
heading.prepend_child <<~HEREDOC
<a href="##{parameterized_heading}" class="heading-permalink">
<svg class="Vlt-grey"><use xlink:href=\"/assets/symbol/volta-icons.svg#Vlt-icon-link\" /></svg>
</a>
HEREDOC
end
@document.to_html
end
private
def document
@document ||= Nokogiri::HTML::DocumentFragment.parse(@input)
end
def parameterized_heading_without_collision(heading)
parameterized_heading = nil
index = nil
loop do
if index
parameterized_heading = "#{heading.text.parameterize}-#{index}"
index += 1
else
parameterized_heading = heading.text.parameterize
index = 2
end
break if @headings.exclude? parameterized_heading
end
@headings << parameterized_heading
parameterized_heading
end
end
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems