Hi,
today I had a problem in Seam using the togglePanel component, in simple words I have a toggle panel with 2 states, the first has just 1 link, if I click it will switch to an edit input control and a button to save the control.
When I click the first button I set the bean to edit (that is null at first) but when I try to save it I get a NPE like as the conversation was closed.

This is my code:

view:

<rich:togglePanel id="gctp" switchType="client" stateOrder="txt,edit" >
 <f:facet name="txt">
 <h:panelGroup>
 <rich:toggleControl for="gctp">
 <a:commandLink value="Aggiungi gruppo" action="#{homepageHelper.preparaAggiuntaGruppo}"></a:commandLink>
 </rich:toggleControl>
 </h:panelGroup>
 </f:facet>
 <f:facet name="edit">
 <h:panelGroup>
 <h:outputText value="Gruppo: "></h:outputText>
 <h:inputText value="#{homepageHelper.gruppoEdit.descrizione}"></h:inputText>
 <rich:toggleControl for="gctp">
 <a:commandLink action="#{homepageHelper.salvaGruppo}" value="Salva" />
 </rich:toggleControl>
 </h:panelGroup>
 </f:facet>
</rich:togglePanel>

bean (Scope=CONVERSATION):

@Name("homepageHelper")
@Scope(ScopeType.CONVERSATION)
public class HomepageHelper implements Serializable {

 private Gruppo gruppoEdit; // gruppo usato per l'aggiunta o la modifica

 public Gruppo getGruppoEdit() {
 if (gruppoEdit==null) {
 gruppoEdit=new Gruppo();
 System.out.println("NEWGET");
 System.out.println("HPH: "+this);
 }
 System.out.println("GET");
 return gruppoEdit;
 }

 public void setGruppoEdit(Gruppo gruppoEdit) {
 System.out.println("SET: "+gruppoEdit);
 System.out.println("HPH: "+this);
 this.gruppoEdit = gruppoEdit;
 }

 public void preparaAggiuntaGruppo() {
 Gruppo g = new Gruppo();
 g.setContatto(loggedUserManager.getLoggedUser());
 g.setDescrizione("nuovo");
 System.out.println("pag");
 setGruppoEdit(g);
 }

 public void preparaModificaGruppo() {
 setGruppoEdit(getGruppoSelezionato());
 }

 public void salvaGruppo() {
 // Se sono in modifica
 System.out.println("GE: "+getGruppoEdit().getDescrizione());
 System.out.println("HPH: "+this);
 /*if (entityManager.contains(getGruppoEdit())) {
 entityManager.merge(getGruppoEdit());
 } else {
 entityManager.persist(getGruppoEdit());
 }
 entityManager.flush(); // Salvo
 */
 }

 ...

where do I wrong?

I noticed during my tests that the conversation object HomepageHelper has different instances between switching.

Also I tried to do now use togglePanel and it works, like that:

<a:form id="gcform">
<a:commandLink value="Aggiungi gruppo" action="#{homepageHelper.preparaAggiuntaGruppo}" reRender="gcform"></a:commandLink>
 <h:outputText value="Gruppo: "></h:outputText>
 <h:inputText value="#{homepageHelper.gruppoEdit.descrizione}"></h:inputText>
 <a:commandLink action="#{homepageHelper.salvaGruppo}" value="Salva" reRender="gcform"/>
</a:form>

I don't know if it is a seam problem or a richfaces problem (or my problem :D) so I post this in both the forums...

thanks

Demetrio Filocamo