MyFaces' JspTilesViewHandlerImpl & dynamic component rendering

Question

Hi,
First -- if you're on the myfaces user list, this is a repeat post. Skip!
Second, I don't mean to offend the RI dev guys with this myfaces post!
Has anyone dynamically rendered JSF components while using myfaces� JspTilesViewHandlerImpl view handler?
I have a WebGalileoFaces tabbed panel component. Its listener attaches sub-tabs to it dynamically. The rendering works without using the view handler above. Yet, when I use the myfaces handler, I get an NPE. My listener impl is below.
The view handler appears to cut off access to the actual UIViewRoot so the form cannot be found. I�ve tried a couple calls directly to the handler using context.getApplication().getViewHandler() yet, none of the methods gave me access to it (well, that I could figure out).
Ideas anyone?
Thanks
Lorinda
    public void processTabSelected(TabSelectedEvent event)
            throws AbortProcessingException {
        context = FacesContext.getCurrentInstance();
        // who sent the event?
        FacesTabbedPanel eventSource = (FacesTabbedPanel) event.getSource();
        UIComponent tabbedPanel = event.getComponent();
        String tabName = tabbedPanel.getId();
        String formId = tabbedPanel.getParent().getId();
        LOG.info("Tab selected:   " + tabName);
        LOG.info("Parent form:   " + formId);
     UIForm form = (UIForm) context.getViewRoot().findComponent(formId);             
NPE HERE ----  UIPanel panel =  (UIPanel) form.findComponent("childTabsGrid");
// NOTE:  the childTabsGrid must be used to attach children.
        if (panel == null) {
            LOG.error("PanelGrid   'childTabsGrid'   could not be found.  ");
        } else {
//  ATTACH SUB TABS
            // clear the childTabsGrid to prevent stacking child tabs      
            panel.getChildren().clear();
          ListSelectionModel selectionModel = eventSource.getListSelectionModel();
           UIComponent newTabbedPanel = createSubTabbedPanel(selectionModel);
           panel.getChildren().add(newTabbedPanel);
        }

Answer 1

Yes, i have created a complete portal page using a custom portal tab and JspTilesViewHandlerImpl with all components dynamically rendered and inserted by tiles: dynamic partal tabs, i18n implementation for mesages and SelectItems, dynamically change company layout with its own look-and-feel if a requested information belongs to a company (division, department, branch office, etc). There is some abnormality and how i go around to get the solution up and running. I will post the details in myfaces dev list in the next couple days.
In essence, the navigation page dispatched by JspTilesViewHandlerImpl works properly with all Jsf UI components. However, within this tile definition and its own layout, any fragment inserted by tiles such as portlets in the left/right columns and the display fragment does not have jsf <h:commandButton> and <h:commandLink> correctly picked up the action while <h:outputLink> properly linked to the intended page.
I temporarily solve the issue to get the portal up and running. However, this is only a temporary solution since it will severly limit a complete integration of Jsf+Tiles. A complete solution needs to be addressed, which i thing myfaces developers can quickly patch it.
BaTien
DBGROUPS