Sha256: f1b4a90c4ecaa04466f603126363ee3761c99a2c60c216bdc00d5f59e33064c7
Contents?: true
Size: 1.19 KB
Versions: 21
Compression:
Stored size: 1.19 KB
Contents
module GovukTechDocs
module TableOfContents
class HeadingTreeRenderer
DEFAULT_MAX_LEVEL = Float::INFINITY
DEFAULT_INDENTATION = ''.freeze
INDENTATION_INCREMENT = ' '.freeze
def initialize(heading_tree, max_level: nil)
@heading_tree = heading_tree
@max_level = max_level || DEFAULT_MAX_LEVEL
end
def html
render_tree(@heading_tree, level: 0)
end
private
def render_tree(tree, indentation: DEFAULT_INDENTATION, level: nil)
output = ''
if tree.heading
output += indentation + %{<a href="#{tree.heading.href}">#{tree.heading.title}</a>\n}
end
if tree.children.any? && level < @max_level
output += indentation + "<ul>\n"
tree.children.each do |child|
output += indentation + INDENTATION_INCREMENT + "<li>\n"
output += render_tree(
child,
indentation: indentation + INDENTATION_INCREMENT * 2,
level: level + 1
)
output += indentation + INDENTATION_INCREMENT + "</li>\n"
end
output += indentation + "</ul>\n"
end
output
end
end
end
end
Version data entries
21 entries across 21 versions & 2 rubygems