This listens to changes to the list of active contexts, and propagates them through the ISourceProvider framework (a common language in which events are communicated to services).
ISourceProvider
A token representing the activation of a context.
A central authority for deciding activation of contexts.
IContext
org.eclipse.ui.contexts
IContextManager
A static class for accessing the registry.
Provides services related to contexts in the Eclipse workbench.
This wraps an old context listener so it supports the new API.
A context service which delegates almost all responsibility to the parent service.