Parent

Class/Module Index [+]

Quicksearch

Nokogiri::CSS::Node

Attributes

type[RW]

Get the type of this node

value[RW]

Get the value of this node

Public Class Methods

new(type, value) click to toggle source

Create a new Node with type and value

# File lib/nokogiri/css/node.rb, line 12
def initialize type, value
  @type = type
  @value = value
end

Public Instance Methods

accept(visitor) click to toggle source

Accept visitor

# File lib/nokogiri/css/node.rb, line 18
def accept visitor
  visitor.send(:"visit_#{type.to_s.downcase}", self)
end
find_by_type(types) click to toggle source

Find a node by type using types

# File lib/nokogiri/css/node.rb, line 80
def find_by_type types
  matches = []
  matches << self if to_type == types
  @value.each do |v|
    matches += v.find_by_type(types) if v.respond_to?(:find_by_type)
  end
  matches
end
preprocess!() click to toggle source

Preprocess this node tree

# File lib/nokogiri/css/node.rb, line 31
def preprocess!
  ### Deal with nth-child
  matches = find_by_type(
    [:CONDITIONAL_SELECTOR,
      [:ELEMENT_NAME],
      [:PSEUDO_CLASS,
        [:FUNCTION]
      ]
    ]
  )
  matches.each do |match|
    if match.value[1].value[0].value[0] =~ /^nth-(last-)?child/
      tag_name = match.value[0].value.first
      match.value[0].value = ['*']
      match.value[1] = Node.new(:COMBINATOR, [
        match.value[1].value[0],
        Node.new(:FUNCTION, ['self(', tag_name])
      ])
    end
  end

  ### Deal with first-child, last-child
  matches = find_by_type(
    [:CONDITIONAL_SELECTOR,
      [:ELEMENT_NAME], [:PSEUDO_CLASS]
  ])
  matches.each do |match|
    if ['first-child', 'last-child'].include?(match.value[1].value.first)
      which = match.value[1].value.first.gsub(/-\w*$/, '')
      tag_name = match.value[0].value.first
      match.value[0].value = ['*']
      match.value[1] = Node.new(:COMBINATOR, [
        Node.new(:FUNCTION, ["#{which}("]),
        Node.new(:FUNCTION, ['self(', tag_name])
      ])
    elsif 'only-child' == match.value[1].value.first
      tag_name = match.value[0].value.first
      match.value[0].value = ['*']
      match.value[1] = Node.new(:COMBINATOR, [
        Node.new(:FUNCTION, ["#{match.value[1].value.first}("]),
        Node.new(:FUNCTION, ['self(', tag_name])
      ])
    end
  end

  self
end
to_a() click to toggle source

Convert to array

# File lib/nokogiri/css/node.rb, line 97
def to_a
  [@type] + @value.map { |n| n.respond_to?(:to_a) ? n.to_a : [n] }
end
to_type() click to toggle source

Convert to_type

# File lib/nokogiri/css/node.rb, line 90
def to_type
  [@type] + @value.map { |n|
    n.to_type if n.respond_to?(:to_type)
  }.compact
end
to_xpath(prefix = '//', visitor = XPathVisitor.new) click to toggle source

Convert this CSS node to xpath with prefix using visitor

# File lib/nokogiri/css/node.rb, line 24
def to_xpath prefix = '//', visitor = XPathVisitor.new
  self.preprocess!
  prefix = '.' if ALLOW_COMBINATOR_ON_SELF.include?(type) && value.first.nil?
  prefix + visitor.accept(self)
end

[Validate]

Generated with the Darkfish Rdoc Generator 2.