Bug 5571 JAR Packager: Reveal first checked project
If the list of projects in the JAR Packager is long it is possible that the shown projects are not checked even though there are checked projects (due to current selection). ==> reveal the first checked project.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/CheckboxTreeAndListGroup.java
checked && !fWhiteCheckedTreeItems.contains(currentElement));
		}
	}
	/**
	*	An item was checked in one of self's two views.  Determine which
	*	view this occurred in and delegate appropriately
	*
	*	@param event CheckStateChangedEvent
	*/
	public void checkStateChanged(final CheckStateChangedEvent event) {
		
		BusyIndicator.showWhile(fTreeViewer.getControl().getDisplay(), new Runnable() {
			public void run() {
				if (event.getCheckable().equals(fTreeViewer))
					treeItemChecked(event.getElement(), event.getChecked());
				else
					listItemChecked(event.getElement(), event.getChecked(), true);
				notifyCheckStateChangeListeners(event);
			}
		});
	}
	/**
	 *	Lay out and initialize self's visual components.
	 *
	 *	@param parent org.eclipse.swt.widgets.Composite
	 *	@param width int
	 *	@param height int
	 */
	protected void createContents(
		Composite parent,