Class: PDFRavager::Fields::RichText

Inherits:
Object
  • Object
show all
Includes:
PDFRavager::FieldTypes::XFA
Defined in:
lib/pdf_ravager/fields/rich_text.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from PDFRavager::FieldTypes::XFA

#xfa_name, #xfa_node_type, #xfa_value

Constructor Details

#initialize(name, value) ⇒ RichText

Returns a new instance of RichText.



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# File 'lib/pdf_ravager/fields/rich_text.rb', line 10

def initialize(name, value)
  @name, @value = name, value
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/pdf_ravager/fields/rich_text.rb', line 8

def name
  @name
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/pdf_ravager/fields/rich_text.rb', line 8

def value
  @value
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/pdf_ravager/fields/rich_text.rb', line 14

def ==(other)
  self.name == other.name && self.value == other.value
end

#set_xfa_value(xfa) ⇒ Object 



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# File 'lib/pdf_ravager/fields/rich_text.rb', line 18

def set_xfa_value(xfa)
  # the double-load is to work around a Nokogiri bug I found:
  # https://github.com/sparklemotion/nokogiri/issues/781
  doc = Nokogiri::XML(Nokogiri::XML::Document.wrap(xfa.getDomDocument).to_xml)
  # first, assume the user-provided field name is an xpath and use it directly:
  strict_match =
    begin
      doc.xpath(xfa_name)
    rescue Nokogiri::XML::XPath::SyntaxError
      []
    end
  # otherwise, we'll loosely match the field name anywhere in the document:
  loose_match = doc.xpath("//*[local-name()='field'][@name='#{xfa_name}']")
  matched_nodes = strict_match.any? ? strict_match : loose_match
  matched_nodes.each do |node|
    value_node = node.at_xpath("*[local-name()='value']")
    if value_node
      # <value> node exists - just create <exData>
      Nokogiri::XML::Builder.with(value_node) do |xml|
        xml.exData('contentType' => 'text/html') do
          xml.body_('xmlns' => "http://www.w3.org/1999/xhtml", 'xmlns:xfa' => "http://www.xfa.org/schema/xfa-data/1.0/") do
            xml << xfa_value # Note: this value is not sanitized/escaped!
          end
        end
      end
    else
      # No <value> node exists - create whole structure
      Nokogiri::XML::Builder.with(node) do |xml|
        xml.value_ do
          xml.exData('contentType' => 'text/html') do
            xml.body_('xmlns' => "http://www.w3.org/1999/xhtml", 'xmlns:xfa' => "http://www.xfa.org/schema/xfa-data/1.0/") do
              xml << xfa_value # Note: this value is not sanitized/escaped!
            end
          end
        end
      end
    end
  end
  xfa.setDomDocument(doc.to_java)
  xfa.setChanged(true)
end