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/internal/navigator/INavigatorHelpContextIds.java
public static final String PREFIX = NavigatorPlugin.PLUGIN_ID + "."; 
	
	public static final String TEXT_CUT_ACTION = PREFIX
			+ "text_cut_action_context"; 
	
	public static final String TEXT_COPY_ACTION = PREFIX
			+ "text_copy_action_context"; 
	
	public static final String TEXT_PASTE_ACTION = PREFIX
			+ "text_paste_action_context"; 
	
	public static final String TEXT_DELETE_ACTION = PREFIX
			+ "text_delete_action_context"; 
	
	public static final String TEXT_SELECT_ALL_ACTION = PREFIX
			+ "text_select_all_action_context"; 
}