Directs source lookup among a collection of source lookup participants, and a common collection of source containers. Each source lookup participant is a source locator itself, which allows more than one source locator to participate in source lookup for a launch. Each source lookup participant searches for source in the source containers managed by this director, and each participant is notified of changes in the source containers (i.e. when the set of source containers changes).

When a source director is initialized, it adds it self as a launch listener, and automatically disposes itself when its associated launch is removed from the launch manager. If a source director is instantiated by a client that is not part of a launch, that client is responsible for disposing the source director.

Clients may subclass this class.