Updated GenerateMask helper

Editor/AssetsHelpers/BaseClasses/OutputOptionVisualProvider.cs

@@ -1,29 +1,32 @@
-using UnityEngine.UIElements;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UIElements;
 
 namespace Misaki.ArtToolEditor
 {
     public abstract class OptionsVisualProvider
     {
-        public object dataSource;
+        public IAssetsProcessor processor;
+        public IEnumerable<Object> sourceObjects;
 
-        public virtual VisualElement ContentOnTop()
+        public virtual void ContentOnTop(VisualElement rootVisualElement)
         {
-            return null;
         }
 
-        public virtual VisualElement ContentAfterList()
+        public virtual void ContentAfterList(VisualElement rootVisualElement)
         {
-            return null;
         }
 
-        public virtual VisualElement ContentBeforeButton()
+        public virtual void ContentBeforeButton(VisualElement rootVisualElement)
         {
-            return null;
         }
 
-        public virtual VisualElement ContentOnBottom()
+        public virtual void ContentOnRight(VisualElement rootVisualElement)
+        {
+        }
+
+        public virtual void ContentOnBottom(VisualElement rootVisualElement)
         {
-            return null;
         }
     }
 }