 
     super options, data
 
+
   addLayer: (layer)->
 
     unless layer in @layers


  isFocused: -> @focused

  addFocusListener: (listener)-> @focusListeners.push listener

  focusChange: (event)->


          combos[combo] = cb

    return if Object.keys(combos).length > 0 then combos else no


  registerKeyCombos:(view)->
    combos = @viewHasKeyCombos view
