Each Loupe extension can define one controller for each scope:

1. Global Controller: Shared by all repositories in a given installation.  Since this is common to multiple repositories it doesn't have access to configuration data since that's repository specific.
2. Repository Controller: Used by a single repository.  This is the most common controller used.
3. Session Controller: Confined to a single session.  Exclusively used by Loupe Desktop.

Creating an Extension Controller

To be loaded as a controller, create a class that:

• Is Public
• Implements the IGlobalController Interface, IRepositoryController Interface, or ISessionController Interface
• Is declared by your Extension Definition by calling the appropriate Register method.

In each controller, the Initialize method will be called after it is created.  This method is passed the relevant Context object which acts as a link back to the rest of Loupe.  Your controller will also be made available to other classes in your extension so you can use it to share state and perform common logic.