My use case is the display of a hierarchical tree of data (eg like an Org Chart), which needs to remain statically positioned and not allow user modifications. Is there a property(s) that can be set to disallow things like moving and editing actions across the whole diagram? Or is the solution to intercept individual events?

In essence, I only want users to be able to select nodes (because I will be display an additional property box when a node is selected), but not select, move, edit labels of, or delete connectors nor move, delete or resize nodes.