What do StateNavigationHandler and StateELResolver do?

[dxxvi]

In the live demo example, there's this block

<application>
 <navigation-handler>org.richfaces.ui.application.StateNavigationHandler</navigation-handler>
 <el-resolver>org.richfaces.el.StateELResolver</el-resolver>
 <locale-config>
 <default-locale>en</default-locale>
 <supported-locale>en</supported-locale>
 </locale-config>
</application>

The API docs has almost nothing about them.

[nbelaevski]

Hi,

That are the classes necessary to use State API: http://livedemo.exadel.com/richfaces-demo/richfaces/stateAPI.jsf?c=stateAPI&tab=usage