Category[] supported = {WORKSPACE, DATE, LAUNCH, LAUNCH_MODE, LAUNCH_TYPE};
categoryProvider = new CategoryProvider(supported, LAUNCH);
categoryProvider.addObserver(this);
contentProvider = new TreePathContentProvider(
new LaunchDataTreeBuilder(categoryProvider));
contentProvider.addObserver(this);
durationProvider = createDurationValueProvider();
durationProvider.addObserver(this);