Bug 61878 Package explorer is filtering out plugin dependencies [package explorer]
Build 20040506 When expanding the Plug-in Dependencies container, it is counter-intuitive to hide project dependencies. These are shown in the build path wizard itself, when you expand this container. I would expect to see them all the time.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
if (needsToDelegateGetParent(child)) {
			return fPackageFragmentProvider.getParent(child);
		} else
			return super.getParent(child);
	}
	protected Object internalGetParent(Object element) {
		
		
		
		
		if (element instanceof IPackageFragmentRoot) {
			IPackageFragmentRoot root= (IPackageFragmentRoot)element;
			IJavaProject project= root.getJavaProject();
			try {
				IClasspathEntry[] entries= project.getRawClasspath();
				for (int i= 0; i < entries.length; i++) {
					IClasspathEntry entry= entries[i];
					if (entry.getEntryKind() == IClasspathEntry.CPE_CONTAINER) {
						if (ClassPathContainer.contains(project, entry, root)) 
							return new ClassPathContainer(project, entry);
					}
				}
			} catch (JavaModelException e) {
				
			}
		}
		if (element instanceof ClassPathContainer) {
			return ((ClassPathContainer)element).getJavaProject();
		}
		return super.internalGetParent(element);