UIShell: How to attach a callback handler tabActivatedEvent(ActionEvent)

Question

Hi Experts,
I like to listen on tab selection changes and take action else where. I need to PPR parts of the application that are outside of main content area (example: filters, options, property editor)
In this wire frame http://www.twitpic.com/1e303w/full please see accordion on the left where there are filters, options. They are dynamic based on the selected tab in the shell.
It would be nice if I get a callback from public void tabActivatedEvent(ActionEvent action). Perhaps :-
1. TabContext could accept list of callback handlers and notify these listeners. Something like...
Ex: public void tabActivatedEvent(ActionEvent action) {
RichCommandNavigationItem tab = (RichCommandNavigationItem) action.getComponent();
// get tab index from id
Object tabIndex = tab.getAttributes().get("tabIndex"); // NOTRANS
setSelectedTabIndex((Integer) tabIndex);
*for (CallbackHandler handler: getCallbackHandlers()) {*
handler.notifyTabActivated(action);
2. Or may be we can go +1 better and push the handlers registration to Tab class so that would allow to attach listeners on selected Activities and not all.
Ex: public void addTab(String localizedName, String taskflowId *, SelectionListener...listeners* ) throws TabOverflowException
and in above code; we could do something like...
Tab tab = getTabs().get(getSelectedTabIndex());
*for (CallbackHandler handler: tab.getCallbackHandlers()) {*
handler.notifyTabActivated(action);
Edited by: GiriSenji on Apr 8, 2010 10:14 AM

Answer 1

It turns out we don't need such complex callbacks.
I found that I could just PPR the navigationPane.index. Many thanks to Richard.