copy_node

# File ext/json/lib/json/editor.rb, line 305
      def copy_node(item)
        if current = selection.selected
          if current and current.type == 'Key'
            @clipboard_data = {
              current.content => Editor.model2data(current.first_child)
            }
          else
            @clipboard_data = Editor.model2data(current)
          end
          window.change
          toplevel.display_status("Copied a node from tree.")
        end
      end