I've got a custom action, and it's being displayed with a CustomActionEditor.
The action has an FsmGameObject variable, which can either be null, or it can contain a GameObject. In my case, that object has to be a prefab, and it has to contain a specific component, so I can use CheckForComponent().
However, if the variable is empty/null, I get an "Error Editing Action" error. If I drag in any GameObject (whether a prefab, or anything from the scene), I get the CheckForComponent error. (Both errors shown here, apologies for image quality).
Since the variable is allowed to be null, I don't want the "Error Editing Action" error; since I specifically want the object (if it exists) to have a component and be a prefab, the CheckForComponent erroneously adds the ability to add the component to a given GameObject.
What I'd like to do is, in my CustomActionEditor, perform some validation on the variable (isPrefab, hasComponent), only if the variable is not null, and then flag an error from the action editor if there's a problem. However, I'm not sure how to flag these kinds of errors except with the variable attributes, which are giving me the above problems.
Is there a good way to flag config errors in a CustomActionEditor?
