.. js:function:: spawnFromFile(viewClass, selectorArgs, callback)

      :param BaseView viewClass: The view class to be spawned.
      :param Object selectorArgs: Additional arguments to be passed to the file selector.

      :callback String path: The path argument of the fileSelector callback. If the callback
          does not return *undefined*, this value will be used as *args* while spawning the
          *viewClass*.