Hello,

i have to develop a gwt application with the following features:

- login mechanism with user roles and permissions
- navigation tree with application modules (showing buttons depending
on permissions)
- each application module can be opened by the user in a seperate UI
tab
- it must be possible to add new modules later (not at runtime!)
- every application module has 3 user roles: administration, read only
and write access


How could i easily implement such a modularity in my "web application
framework"? Means: how can i reduce the implementation costs for new
modules? Remember: modules are only shown if the user has the
permission to view/change/administrate it!


Thanks for your answers!

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