passEvents(contents) {
    constants["a" /* DOM_EVENTS */].forEach(e => {
      contents.on(e, ev => this.triggerViewEvent(ev, contents));
    });
    contents.on(constants["c" /* EVENTS */].CONTENTS.SELECTED, e => this.triggerSelectedEvent(e, contents));
  }
Pass the events from a view's Contents
@private
@param  {Contents} view contents