Bug 19974 Packages view: back / forward buttons do not show frame name [package explorer]
Build 20020611 In packages view, - select a container - Navigate / Go Into - hover over Back button - it says simply "Back" It should say "Back to Workspace". Compare with Navigator.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
fViewer.addSelectionChangedListener(fSelectionListener);
				}
				return true;
			}
		}
		return false;
	}
	
	private boolean isOnClassPath(IFile file) {
		IJavaProject jproject= JavaCore.create(file.getProject());
		try {
			return jproject.isOnClasspath(file);
		} catch (JavaModelException e) {
			
		}
		return false;
	}
	/**
	 * Returns the element's parent.
	 * 
	 * @return the parent or <code>null</code> if there's no parent
	 */
	private Object getParent(Object element) {
		if (element instanceof IJavaElement)
			return ((IJavaElement)element).getParent();
		else if (element instanceof IResource)
			return ((IResource)element).getParent();
			
		return null;
	}