That call back will be made only for the specific module type that is being deleted. So if an assignment was being deleted it would call mod_assign_pre_course_module_delete() only.
I think other plugins will only be told about a deletion after it has been fully completed (via the event)
I don't think there is a hook that would allow you to intervene, probably the best you could do is intercept the activity deletion event and automatically restore it (if the site has the recycle bin enabled)
I think other plugins will only be told about a deletion after it has been fully completed (via the event)
I don't think there is a hook that would allow you to intervene, probably the best you could do is intercept the activity deletion event and automatically restore it (if the site has the recycle bin enabled)