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# frozen_string_literal: true
require 'haml/object_ref'
module Haml::AttributeBuilder
class << self
def build(escape_attrs, quote, format, object_ref, *hashes)
hashes << Haml::ObjectRef.parse(object_ref) if object_ref
buf = []
hash = merge_all_attrs(hashes)
keys = hash.keys.sort!
keys.each do |key|
case key
when 'id'
buf << " id=#{quote}#{build_id(escape_attrs, *hash[key])}#{quote}"
when 'class'
buf << " class=#{quote}#{build_class(escape_attrs, *hash[key])}#{quote}"
when 'data'
buf << build_data(escape_attrs, quote, *hash[key])
when 'aria'
buf << build_aria(escape_attrs, quote, *hash[key])
when *Haml::BOOLEAN_ATTRIBUTES, /\Adata-/, /\Aaria-/
build_boolean!(escape_attrs, quote, format, buf, key, hash[key])
else
buf << " #{key}=#{quote}#{escape_html(escape_attrs, hash[key].to_s)}#{quote}"
end
end
buf.join
end
def build_id(escape_attrs, *values)
escape_html(escape_attrs, values.flatten.select { |v| v }.join('_'))
end
def build_class(escape_attrs, *values)
if values.size == 1
value = values.first
case
when value.is_a?(String)
# noop
when value.is_a?(Array)
value = value.flatten.select { |v| v }.map(&:to_s).uniq.join(' ')
when value
value = value.to_s
else
return ''
end
return escape_html(escape_attrs, value)
end
classes = []
values.each do |value|
case
when value.is_a?(String)
classes += value.split(' ')
when value.is_a?(Array)
classes += value.select { |v| v }
when value
classes << value.to_s
end
end
escape_html(escape_attrs, classes.map(&:to_s).uniq.join(' '))
end
def build_data(escape_attrs, quote, *hashes)
build_data_attribute(:data, escape_attrs, quote, *hashes)
end
def build_aria(escape_attrs, quote, *hashes)
build_data_attribute(:aria, escape_attrs, quote, *hashes)
end
private
def build_data_attribute(key, escape_attrs, quote, *hashes)
attrs = []
if hashes.size > 1 && hashes.all? { |h| h.is_a?(Hash) }
data_value = merge_all_attrs(hashes)
else
data_value = hashes.last
end
hash = flatten_attributes(key => data_value)
hash.sort_by(&:first).each do |key, value|
case value
when true
attrs << " #{key}"
when nil, false
# noop
else
attrs << " #{key}=#{quote}#{escape_html(escape_attrs, value.to_s)}#{quote}"
end
end
attrs.join
end
def flatten_attributes(attributes)
flattened = {}
attributes.each do |key, value|
case value
when attributes
when Hash
flatten_attributes(value).each do |k, v|
if k.nil?
flattened[key] = v
else
flattened["#{key}-#{k.to_s.gsub(/_/, '-')}"] = v
end
end
else
flattened[key] = value if value
end
end
flattened
end
def merge_all_attrs(hashes)
merged = {}
hashes.each do |hash|
unless hash.is_a?(Hash)
raise ArgumentError, "Non-hash object is given to attributes!"
end
hash.each do |key, value|
key = key.to_s
case key
when 'id', 'class', 'data', 'aria'
merged[key] ||= []
merged[key] << value
else
merged[key] = value
end
end
end
merged
end
def build_boolean!(escape_attrs, quote, format, buf, key, value)
case value
when true
case format
when :xhtml
buf << " #{key}=#{quote}#{key}#{quote}"
else
buf << " #{key}"
end
when false, nil
# omitted
else
buf << " #{key}=#{quote}#{escape_html(escape_attrs, value)}#{quote}"
end
end
def escape_html(escape_attrs, str)
if escape_attrs
Haml::Util.escape_html(str)
else
str
end
end
end
end
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