using UnityEditor;
using UnityEngine;

/// <summary>
///
/// </summary>
/// <see>https://answers.unity.com/questions/489942/how-to-make-a-readonly-property-in-inspector.html</see>
 public class ReadOnlyAttribute : PropertyAttribute
 {

 }

 [CustomPropertyDrawer(typeof(ReadOnlyAttribute))]
 public class ReadOnlyDrawer : PropertyDrawer
 {
     public override float GetPropertyHeight(SerializedProperty property,
                                             GUIContent label)
     {
         return EditorGUI.GetPropertyHeight(property, label, true);
     }

     public override void OnGUI(Rect position,
                                SerializedProperty property,
                                GUIContent label)
     {
         GUI.enabled = false;
         EditorGUI.PropertyField(position, property, label, true);
         GUI.enabled = true;
     }
 }