org.eclipse.ui.contexts
Interfaces 
ICompoundContextActivationService
IContext
IContextActivationService
IContextActivationServiceListener
IContextContextBinding
IContextListener
IContextManager
IContextManagerListener
IMutableContextActivationService
IMutableContextManager
IWorkbenchContextSupport
IWorkbenchPageContextSupport
IWorkbenchPartSiteContextSupport
IWorkbenchWindowContextSupport
Classes 
ContextActivationServiceEvent
ContextActivationServiceFactory
ContextEvent
ContextManagerEvent
ContextManagerFactory
Exceptions 
NotDefinedException