Bug 33151 [Navigator] F2 in Outline does not work
RC1 build - new workspace - new Java project, say no to perspective switch prompt - new Java class Test - position cursor over Test class name in editor - F2 - you get the popup - select class Test in Outline - F2 - no effect - choose Edit / Show Tooltip Description - it works
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/navigator/WorkspaceActionGroup.java
refreshAction.selectionChanged(selection);
			menu.add(refreshAction);
		}
		if (isProjectSelection) {
			if (hasClosedProjects) {
				openProjectAction.selectionChanged(selection);
				menu.add(openProjectAction);				
			}
			if (hasOpenProjects) {
				closeProjectAction.selectionChanged(selection);
				menu.add(closeProjectAction);
			}
		}					
	}
	/**
	 * Returns whether there are builders configured on the given project.
	 *
	 * @return <code>true</code> if it has builders,
	 *   <code>false</code> if not, or if this could not be determined
	 */
	boolean hasBuilder(IProject project) {
		try {
			ICommand[] commands = project.getDescription().getBuildSpec();
			if (commands.length > 0)
				return true;
		}
		catch (CoreException e) {
			 
			
		}