ScenePartition/Editor/ScenePartitionSOEditor.cs

using UnityEngine;
using UnityEditor;

namespace VertexColor.ScenePartition.Editor
{
    [CustomEditor(typeof(ScenePartitionSO))]
    public class ScenePartitionSOEditor : UnityEditor.Editor
    {
        public override void OnInspectorGUI()
        {
            ScenePartitionSO scenePartitionSO = (target as ScenePartitionSO);

            serializedObject.Update();
            //EditorGUILayout.PropertyField(sceneAssetProperty);
            serializedObject.ApplyModifiedProperties();

            EditorGUILayout.Space();

            if(scenePartitionSO.sceneAsset == null)
            {
                if (GUILayout.Button("Create Scene"))
                {
                    scenePartitionSO.CreateScene();
                }
            }
            else
            {
                if (GUILayout.Button("Load All"))
                {
                    scenePartitionSO.LoadAll();
                }

                if (scenePartitionSO.hasLoadedPartitions)
                {
                    if (GUILayout.Button("Save All"))
                    {
                        scenePartitionSO.SaveAll();
                    }
                }

                if (GUILayout.Button("Unload"))
                {
                    scenePartitionSO.Unload();
                }

                if (GUILayout.Button("Open Scene Data Folder"))
                {
                    EditorUtility.RevealInFinder(ScenePartitionUtils.GetDataPath(scenePartitionSO));
                }
            }

            EditorGUILayout.Space();

            using (new EditorGUI.DisabledGroupScope(true))
            {
                DrawDefaultInspector();
            }
        }
    }
}