Creates a only child lambda. Pass of-type to only look at elements
of its type.
# File actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb, line 772
def only_child(of_type)
lambda do |element|
# Element must be inside parent element.
return false unless element.parent && element.parent.tag?
name = of_type ? element.name : nil
other = false
for child in element.parent.children
# Skip text nodes/comments.
if child.tag? && (name == nil || child.name == name)
unless child.equal?(element)
other = true
break
end
end
end
!other
end
end
