Bug 4166 DCR: Javadoc for implementers of a method (1GJJ5LD)
If I hover over a method which implements an interface or overrides a method I would like to see the corresponding Javadoc (unless I also added my own Javadoc). NOTES:
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/util/JavaUIHelp.java
public static void setHelp(StructuredViewer viewer, String contextId) {
		JavaUIHelpListener listener= new JavaUIHelpListener(viewer, contextId);
		viewer.getControl().addHelpListener(listener);
	}
	private static class JavaUIHelpListener implements HelpListener {
		private StructuredViewer fViewer;
		private String fContextId;
		public JavaUIHelpListener(StructuredViewer viewer, String contextId) {
			fViewer= viewer;
			fContextId= contextId;
		}
		/*
		* @see HelpListener#helpRequested(HelpEvent)
		* 
		*/
		public void helpRequested(HelpEvent e) {
			ISelection selection= fViewer.getSelection();
			Object selected= SelectionUtil.getSingleElement(selection);
			IHelp help= WorkbenchHelp.getHelpSupport();
			IContext context= help.getContext(fContextId);
			if (context == null) {
				return;
			}
			if (selected instanceof IJavaElement) {
				context= new JavaUIContext(context, (IJavaElement) selected);
			}
			WorkbenchHelp.displayHelp(context);
		}
	}
	private static class JavaUIContext implements IContext {