keydown: function(e) {
            //hide on tab or enter
            if ((e.keyCode === 9) || (e.keyCode === 13)) {
                this.hide();
            }

            //hide on esc and prevent propagation
            if (e.keyCode === 27) {
                e.preventDefault();
                e.stopPropagation();

                this.hide();
            }
        },

  // methods that involve volatile read/write operations, in practice there is no issue. Also, the
  // way in such a visibility issue would surface is most likely as a failure of cancel() to
  // propagate to the input. Cancellation propagation is fundamentally racy so this is fine.
  //
  // Future versions of the JMM may revise safe construction semantics in such a way that we can
  // safely publish these objects and we won't need this whole discussion.