I have two features that add CustomAction to the SiteSettings page. One feature is at the Site level and the other is at Web level.
The CustomAction that is being added at the Site level is a link to the custom configuration page that manipulates Site level settings for my application. Therefore, I don't want the link displayed for the SiteSettings page of a subsite. I know there is a setting (RequireSiteAdministrator) that hides the page according to access level, but I would still like to have this page show up for Site owners at the top/root level site settings page and not in the sub site level setting page.
There is a RootWebOnly attribute for the CustomAction xml node which would solve my problem. The problem with this attribute is that it only available for SandBoxed solutions.
I know that this is possible, since I see the behavior for the Site collection administrators link in the Users and Permissions section of the Site Settings page. Please notice that if you go to the top/root level settings page, you will see this link. On the other hand, if you navigate to the Site Settings page of a subsite, the link is no longer there.
I have tried using HideCustomAction, but this hides the link on both pages.