Bug 28510 java build path inconsistency [build path]
20021216 select rt.jar in the package explorer open properties it allows you to set the javadoc location but for source attachment you are sent somewhere else it's inconsistent - on the java build path they both look sort of the same (they sit under the same node in the tree)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
LayoutUtil.doDefaultLayout(composite, new DialogField[] { fLibrariesList }, true);
		LayoutUtil.setHorizontalGrabbing(fLibrariesList.getTreeControl(null));
		
		int buttonBarWidth= converter.convertWidthInCharsToPixels(24);
		fLibrariesList.setButtonsMinWidth(buttonBarWidth);
		
		fLibrariesList.getTreeViewer().setSorter(new CPListElementSorter());
		
		fSWTControl= composite;
				
		return composite;
	}
	
	private Shell getShell() {
		if (fSWTControl != null) {
			return fSWTControl.getShell();
		}
		return JavaPlugin.getActiveWorkbenchShell();
	}
	
	
	private class LibrariesAdapter implements IDialogFieldListener, ITreeListAdapter {
		
		private final Object[] EMPTY_ARR= new Object[0];
		
		
		public void customButtonPressed(TreeListDialogField field, int index) {
			libaryPageCustomButtonPressed(field, index);
		}