Struts2 & Tiles2

Hallo,

I'm new to struts so this may be a simple question for experts...

I started developing a classical webapp: Header and Menu on top, navigation on the left side and details on the right side. When the user selects an item in the navigation, the detail is displayed on the right side.

Depending on the detail, the user now can navigate and open the edit dialog for the detail. The edit dialog should replace the detail. The user press the save or cancel button on the edit dialog an show be redirected to the detail again.
Depending on the detail and the user action, the header, menu and / or navigation can change.

I want to only relaod the parts of the page that need to be changed maybe using AJAX.

So far I use Struts 2.1.2 and Tiles 2.0.5.
But I could not find out how to "fill" tiles-definition with the action and parameters from the navigation
How can I do this?

What is best practise for my problem?
How do you solve this?


Thanks for your help!