Bug 96952 [build path] project settings: library tab enablement and focus
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
IFolder folder= dialog.getFolder();
			return new CPListElement[] { newCPLibraryElement(folder) };
		}
		return null;
	}
			
			
	private CPListElement[] openClassFolderDialog(CPListElement existing) {
		if (existing == null) {
			IPath[] selected= BuildPathDialogAccess.chooseClassFolderEntries(getShell(), fCurrJProject.getPath(), getUsedContainers(existing));
			if (selected != null) {
				IWorkspaceRoot root= fCurrJProject.getProject().getWorkspace().getRoot();
				ArrayList res= new ArrayList();
				for (int i= 0; i < selected.length; i++) {
					IPath curr= selected[i];
					IResource resource= root.findMember(curr);
					if (resource instanceof IContainer) {
						res.add(newCPLibraryElement(resource));
					}
				}
				return (CPListElement[]) res.toArray(new CPListElement[res.size()]);
			}
		} else {
			
		}		
		return null;
	}
	
	private CPListElement[] openJarFileDialog(CPListElement existing) {
		IWorkspaceRoot root= fCurrJProject.getProject().getWorkspace().getRoot();