module RubyXL::RelationshipSupport

def collect_related_objects
  res = related_objects.compact # Avoid tainting +related_objects+ array
  res += generic_storage if generic_storage
  if relationship_container then
    relationship_container.owner = self
    res << relationship_container
  end
  res.each { |o| res += o.collect_related_objects if o.respond_to?(:collect_related_objects) }
  res
end

def load_relationships(dir_path, base_file_name = '')
  self.relationship_container = relationship_file_class.load_relationship_file(dir_path, base_file_name)
  return if relationship_container.nil?
  relationship_container.load_related_files(dir_path, base_file_name).each_pair { |rid, related_file|
    attach_relationship(rid, related_file) if related_file
  }
end

def related_objects # Override this method
  []
end

def store_relationship(related_file, unknown = false)
  self.generic_storage ||= []
  puts "WARNING: #{self.class} is not aware what to do with #{related_file.class}" if unknown
  self.generic_storage << related_file
end