JSF UI component view restore.

Question

Good day,
Please help me with my problem.
The problem is:
I use this http://myfaces.apache.org/tomahawk/panelNavigation2 to make a menu on my site. Component renered perfect: I can open submenu items, click on them, todo some actions and so on. But if I will be redirected to another page the view of my menu cleared. I mean, that all items collapsed and there is no active menu item what had been clicked.
How can I realise a component view saving for example in session? I mean, If I click on some item I want to see this item opened after refresh.
This problem not in http://myfaces.apache.org/tomahawk/panelNavigation2 realisation, because if I use another components of the same type (rich components from JBOSS for example) I have the same....
Please help me!

Answer 1

I don't use tomahawk but in other similar components you have a flag or something that controls state, like expanded/collapsed, selectedItem, etc.
The problem is that the component will remember the state because it saves it internally as a local value. Thus as long as you are using the same view (viewId) the component state is stored in the component tree. The minute you go to another view, that view state is lost.
The answer is typically to create a managed bean, put it is session scope, and have it hold the view state. That way when you return to the view all of the expanded/collapsed, selectedItem, etc information is restore correctly.