CustomEditor on prefab no more appears

I have some custom logic on inspector prefabs , which instantiates prefabs on specific parent and focuses on it via button,

Code (CSharp):

1. [CustomEditor(typeof(SUIWindow), true)]
2.         public class SUIWindowEditor : Editor
3.         {
4.             public override void OnInspectorGUI()
5.             {            
6.                 SUIWindow wnd = this.target as SUIWindow;
7.  
8.                 PrefabType prefab_type = PrefabUtility.GetPrefabType(wnd);
9.                 if (prefab_type == PrefabType.Prefab)
10.                 {
11.                     if ( GUILayout.Button ("Instantiate") )
12.                     {
13.  
14.                         SUIWindow inst_wnd = SUIWindow.create(wnd.GetType());
15.                         Selection.activeObject = inst_wnd.gameObject;
16.                     }
17.                 } else

but in new beta version this is no more works.
and there is only one "Open prefab" button
before:

after:

 

old prefab system is just gone, as crazy as it sounds.

 

ok, how I can make custom logic on NEW prefab system ?

I need custom button near "Open prefab"

 

cool beta support ! (no)

 

anybody knows how to extend ".prefab" inspector GUI ?

 

https://github.com/Unity-Technologi...r/Editor/Mono/Prefabs/PrefabImporterEditor.cs

That looks like the inspector script for prefabs. If you can find a way to override or extend it, you should be good

 

thx for link.
But no way to extend PrefabImporterEditor, due to it is an internal class

 

Adding a vote here, please expose this Unity. Need to be able to detect if the "prefab" is just selected in Project view and not in Scene view.

 

You weren't talking to me, but I need the same thing. For me, here's my case.

It's not a component on the prefab, it's an editor script for a Custom Inspector, for a component that's on the prefab. I don't add any components to the prefab for editor tooling.

Here's why I made the button, for Core GameKit.
-We have a prefabs folder in our Asset Store plugin. Some users who don't know any better just drag that prefab into their Scene and start modifying it (adding waves and spawners, etc). But it's still linked to the prefab in our plugins folder, which will be overwritten the next time they upgrade the plugin. They will lose all changes. Yes they could roll back if they use source control. A lot of users don't know that they need to make their own prefab in a different folder so unlink it from our "base" one so it won't get overwritten. This happened to a few customers and they were quite upset when it happened. Maybe no source control. I like to protect inexperienced users from doing such mistakes.

So the solution we came up with, which worked until 2018.3, is:

1) Detect that the prefab is selected not in a Scene, but in Project View so we can show the warning "do not drag this into your Scene. Click the Create button below". That button instantiates (which isn't linked to any prefab) the prefab, and you can make a prefab out of it, or not.

The project view detection code was:
if (PrefabUtility.GetPrefabAssetType(gObject) == PrefabType.Prefab) {
// show warning and button.
// abort.
}
// else normal inspector code

Also wanted the mention that my editor script is quite long, handling the custom inspector for the script with all its sections. It aborts early and doesn't show any of that (just the warning and the button) if it's selected in Project View though. We did not add a custom inspector only for the button. That's only a tiny fraction of what it does - but that's the part that doesn't work any more.

 

Chiming in to say we also have a few things very similar to what @jerotas described.

 

Sadly currently it's not possible to do that anymore. I think the way to solve this problem at the moment is Unity make it directly enter prefab mode when selecting prefab at Project tab and directly exit prefab when selecting something other than prefab at Project tab or the blank area at Project tab. It also needs to provide configurable hotkey to allow quickly exit prefab mode.

 

That would make it a little better. Upvoting your suggestion!

 

I want to add buttons below the "open prefab" button.

 

We're building a lot of custom workflows within the editor so we don't have to dig into menus everytime we want to create a new Data file based upon a prefab (for our modable props system).
Not being able to extend or override the first level Prefab window is more than a little infuriating and if anything, ruins our UX