Class: Jekyll::Spaceship::ElementProcessor

Inherits:
Processor
  • Object
show all
Defined in:
lib/jekyll-spaceship/processors/element-processor.rb

Constant Summary

Constants inherited from Processor

Processor::DEFAULT_PRIORITY, Processor::PRIORITY_MAP

Instance Attribute Summary

Attributes inherited from Processor

#config, #exclusions, #handled, #logger, #page, #priority, #registers

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Processor

#after_exclude, #converter, #dispatch, escape_html, exclude, #ext, #filename, #initialize, #initialize_exclusions, #initialize_priority, #initialize_register, #name, #on_handle_html_block, #on_handled, #output_ext, #pre_exclude, priority, #process?, register

Constructor Details

This class inherits a constructor from Jekyll::Spaceship::Processor

Class Method Details

.config ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/element-processor.rb', line 9

def self.config
  { 'css' => [] }
end

Instance Method Details

#create_children(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/element-processor.rb', line 106

def create_children(data)
  doc = data[:doc]
  data = data[:data]
  root = Nokogiri::HTML.fragment("")

  data = [data] unless data.kind_of? Array
  data.each do |child_data|
    node = self.create_element({
      :doc => doc,
      :data => child_data
    })
    next if node.nil?
    unless child_data['children'].nil?
      node.children = self.create_children({
        :doc => doc,
        :data => child_data['children']
      })
    end
    root.add_child node
  end
  root.children
end

#create_element(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/element-processor.rb', line 129

def create_element(data)
  doc = data[:doc]
  data = data[:data]

  return if data.nil?
  return Nokogiri::HTML.fragment(data) if data.kind_of? String
  return if data['name'].nil?

  # create node
  node = doc.create_element(data['name'])

  # set props
  data['props']&.each do |prop, val|
    if val.kind_of? Hash
      result = []
      val.each { |k, v| result.push "#{k}: #{v}" }
      val = result.join(";")
    end
    node.set_attribute(prop, val)
  end
  node
end

#handle_css_pattern(data) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/element-processor.rb', line 40

def handle_css_pattern(data)
  doc = data[:doc]
  element = data[:element]
  data = data[:data]

  if data.kind_of? String
    element.replace Nokogiri::HTML.fragment(data)
  elsif data.kind_of? Hash
    # set name
    element.name = data['name'] unless data['name'].nil?

    # set props
    data['props']&.each do |prop, val|
      next element.remove_attribute if val.nil?
      if val.kind_of? Array
        next if val.size != 2
        v = element[prop]
        v = '' if v.nil?
        val = v.sub(/#{val[0]}/, val[1])
      elsif val.kind_of? Hash
        result = []
        val.each { |k, v| result.push "#{k}: #{v}" }
        val = result.join(";")
      end
      element.set_attribute(prop, val)
    end

    # processing children
    return unless data.has_key?('children')
    return element.inner_html = "" if data['children'].nil?
    children = self.create_children({
      :doc => doc,
      :data => data['children']
    })

    # replace whole inner html
    unless data['children'].kind_of? Array
      return element.inner_html = children
    end

    if element.children.size.zero?
      return element.inner_html = children
    end

    index = data['children'].index(nil)
    if index.nil?
      return element.inner_html = children
    end

    # insert to the end of children
    if index == 0
      return element.children.last.after(children)
    end

    # insert to the begin of children
    rindex = data['children'].rindex { |item| !item.nil? }
    if index == rindex + 1
      return element.children.first.before children
    end

    # wrap the children
    element.children.first.before children[0..index]
    element.children.last.after children[index..children.size]
  end
end

#on_handle_html(content) ⇒ Object 



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# File 'lib/jekyll-spaceship/processors/element-processor.rb', line 13

def on_handle_html(content)
  return content if config['css'].size.zero?

  # use nokogiri to parse html content
  doc = Nokogiri::HTML(content)

  # handle each css pattern
  config['css'].each do |data|
    data.each do |key, val|
      key = [key] if key.kind_of? String
      key.each do |pattern|
        nodes = doc.css(pattern)
        nodes.each do |element|
          handle_css_pattern({
            :doc => doc,
            :element => element,
            :data => val
          })
        end
        self.handled = true
      end
    end
  end

  doc.to_html
end