sort

# File ext/json/lib/json/editor.rb, line 611
      def sort(item)
        if current = selection.selected
          if current.type == 'Array'
            parent = current.parent
            ary = Editor.model2data(current)
            order, reverse = ask_for_order
            order or return
            begin
              block = eval "lambda { |x| #{order} }"
              if reverse
                ary.sort! { |a,b| block[b] <=> block[a] }
              else
                ary.sort! { |a,b| block[a] <=> block[b] }
              end
            rescue => e
              Editor.error_dialog(self, "Failed to sort Array with #{order}: #{e}!")
            else
              Editor.data2model(ary, model, parent) do |m|
                m.insert_before(parent, current)
              end
              model.remove(current)
              expand_collapse(parent)
              window.change
              toplevel.display_status("Array has been sorted.")
            end
          else
            toplevel.display_status("Only Array nodes can be sorted!")
          end
        else
            toplevel.display_status("Select an Array to sort first!")
        end
      end