Class: RDF::RDFa::Reader::Nokogiri::NodeProxy

Inherits:

Object

• Object
• RDF::RDFa::Reader::Nokogiri::NodeProxy

show all

Defined in:

lib/rdf/rdfa/reader/nokogiri.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) node readonly

  Returns the value of attribute node.

• - (Object) parent readonly

  Returns the value of attribute parent.

Instance Method Summary (collapse)

• - (String) base

  Return xml:base on element, if defined.

• - (NodeSetProxy) children

  Children of this node.

• - (Object) display_path
• - (NodeProxy) initialize(node, parent = nil) constructor

  A new instance of NodeProxy.

• - (String) language

  Element language.

• - (Object) method_missing(method, *args)

  Proxy for everything else to @node.

• - (Hash{String => String}) namespaces

  Retrieve XMLNS definitions for this element.

• - (Array<:text, :element, :attribute>) text_content?

  Return true of all child elements are text.

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 21

def initialize(node, parent = nil)
  @node = node
  @parent = parent
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 96

def method_missing(method, *args)
  @node.send(method, *args)
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 18

def node
  @node
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 19

def parent
  @parent
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 53

def base
  @node.attribute_with_ns("base", RDF::XML.to_s)
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 90

def children
  NodeSetProxy.new(@node.children, self)
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 57

def display_path
  @display_path ||= begin
    path = []
    path << parent.display_path if parent
    path << @node.name
    case @node
    when ::Nokogiri::XML::Element then path.join("/")
    when ::Nokogiri::XML::Attr    then path.join("@")
    else path.join("?")
    end
  end
end

If both the lang attribute in no namespace and the lang attribute in the XML namespace are set
on an element, user agents must use the lang attribute in the XML namespace, and the lang
attribute in no namespace must be ignored for the purposes of determining the element's
language.

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 36

def language
  language = case
  when @node.document.is_a?(::Nokogiri::HTML::Document) && @node.attributes["xml:lang"]
    @node.attributes["xml:lang"].to_s
  when @node.document.is_a?(::Nokogiri::HTML::Document) && @node.attributes["lang"]
    @node.attributes["lang"].to_s
  when @node.attribute_with_ns("lang", RDF::XML.to_s)
    @node.attribute_with_ns("lang", RDF::XML.to_s)
  when @node.attribute("lang")
    @node.attribute("lang").to_s
  end
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 82

def namespaces
  @node.namespace_definitions.inject({}) {|memo, ns| memo[ns.prefix] = ns.href.to_s; memo }
end

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# File 'lib/rdf/rdfa/reader/nokogiri.rb', line 74

def text_content?
  @node.children.all? {|c| c.text?}
end