     @enum {string}
   ###
   @CLS:
-    HIDDEN: 'hidden'
+    OPEN: 'open'
 
   ###*
     @param {Object} params

    goog.events.listen element, goog.events.EventType.TOUCHSTART, @handleToggle
    goog.events.listen @dom.one('body'), goog.events.EventType.TOUCHSTART, @handleClose

    super(element)

  ###*
    @protected

  ###
  toggle: ->
    if @shown
      goog.dom.classes.add @element, wzk.ui.popup.Popup.CLS.OPEN
    else
      goog.dom.classes.remove @element, wzk.ui.popup.Popup.CLS.OPEN
