# rm::data_structures::item_structure
# ItemStructure module
# http://www.openehr.org/uml/release-1.0.1/Browsable/_9_0_76d0249_1109346709572_859750_3810Report.html
# refs #54
include OpenEhr::RM::DataStructures
module OpenEhr
  module RM
    module DataStructures
      module ItemStructure
        class ItemStructure < DataStructure
        end

        class ItemSingle < ItemStructure
          attr_reader :item

          def initialize(args = {})
            super(args)
            self.item = args[:item]
          end

          def as_hierarchy
            return @item
          end

          def item=(item)
            raise ArgumentError, 'item is mandatory' if item.nil?
            @item = item
          end
        end

        class ItemList < ItemStructure
          attr_accessor :items

          def initialize(args = {})
            super(args)
            self.items = args[:items]
          end

          def item_count
            unless @items.nil?
              return @items.size
            else
              return 0
            end
          end

          def names
            return @items.collect{|item| item.name}
          end

          def named_item(a_name)
            @items.each do |item|
              return item if item.name.value == a_name
            end
            retrun nil
          end

          def ith_item(i)
            return @items[i]
          end

          def as_hierarchy
            return Cluster.new(:name => @name,
                               :archetype_node_id => @archetype_node_id,
                               :items => @items)
          end
        end

        class ItemTable < ItemStructure
          attr_accessor :rows

          def initialize(args = {})
            super(args)
            self.rows = args[:rows]
          end

          def row_count
            if @rows.nil?
              return 0
            else
              return @rows.size
            end
          end
        end
      end # of ItemStructure
    end # of DataStructures
  end # of RM
end # of OpenEhr