Bug 189490 [CommonNavigator] Go To->Resource won't enable
I0524 1. Open the Project Explorer in the Resource perspective 2. Create a vanilla project P 3. Create a folder F 4. Create a file resource R Open the Navigate->Go To file. "Resource..." will remain disabled.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonViewer.java
return cachedSelection;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.StructuredViewer#refresh(java.lang.Object)
	 */
	public void refresh(Object element) {
		refresh(element, true);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.StructuredViewer#update(java.lang.Object,
	 *      java.lang.String[])
	 */
	public void update(Object element, String[] properties) {
		if(element != getInput()) {
			INavigatorPipelineService pipeDream = contentService
					.getPipelineService();
	
			PipelinedViewerUpdate update = new PipelinedViewerUpdate();
			update.getRefreshTargets().add(element);
			update.setUpdateLabels(true);
			
			if (pipeDream.interceptUpdate(update)) {
				 
				for (Iterator iter = update.getRefreshTargets().iterator(); iter
						.hasNext();) {
					super.update(iter.next(), properties);