  *
     * @attribute checked
     * @type boolean
     * @default false
     */
    checked: false,

    /**
     * If true, the toggle button is disabled.  A disabled toggle button cannot
     * be tapped or dragged to change the checked state.
     *
     * @attribute disabled
     * @type boolean
     * @default false
     */
    disabled: false,

    eventDelegates: {
      down: 'downAction',
      up: 'upAction',
      tap: 'tap',
      trackstart: 'trackStart',
      trackx: 'trackx',
      trackend