Portlet Modes changes from button listener

General
1

Hi everyone,

  2. I have written to differentiate portlet view mode and edit mode. In edit mode after saving the preferences,it should render view mode of portlet (it should render from save button listener).
  3. Can’t we provide setup option in configuration through vaadin like liferay MVC portlet provide.
  4. I have done for configuration setup but it did not work like provided config jsp and config action class and after saving the configuration,i tried to refresh the portlet but it is showing
    “This change will only be shown after you refresh the current page.”
    How can i refresh vaadin portlet.

does any one have idea?

Thanks in advance.