Bug 32224 [Show In]Back-linking doesn't work for .class files in jars
Build 20030218 1. Enable back-linking in Package Explorer 2. Open Object (in rt.jar) Observe: An editor on Object.class opens (it shows the attached source). However Object.class is not shown in Package Explorer Note that Alt-Shift-s->Package Explorer doesn't work either.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
fViewer.refresh();
	}
	
	/* (non-Javadoc)
	 * @see IViewPartInputProvider#getViewPartInput()
	 */
	public Object getViewPartInput() {
		if (fViewer != null) {
			return fViewer.getInput();
		}
		return null;
	}
	public void collapseAll() {
		fViewer.getControl().setRedraw(false);		
		fViewer.collapseToLevel(getViewPartInput(), TreeViewer.ALL_LEVELS);
		fViewer.getControl().setRedraw(true);
	}
	
	public PackageExplorerPart() { 
		initLinkingEnabled();
	}
	public boolean show(ShowInContext context) {
		Object input= context.getInput();
		if (input instanceof IEditorInput)
			return showInput(getElementOfInput((IEditorInput)context.getInput()));
		ISelection selection= context.getSelection();
		if (selection != null) {
			selectReveal(selection);
			return true;
		}