using System;
using UnityEditor;
using UnityEngine;

// copy pasta from https://gist.github.com/ProGM/9cb9ae1f7c8c2a4bd3873e4df14a6687
[CustomPropertyDrawer( typeof( StringInList ) )]
public class StringInListDrawer : PropertyDrawer {

    // Draw the property inside the given rect
    public override void OnGUI( Rect position, SerializedProperty property, GUIContent label )
        {
            var stringInList = attribute as StringInList;
            var list = stringInList.List;
            if ( property.propertyType == SerializedPropertyType.String ) {
                int index = Mathf.Max( 0, Array.IndexOf( list, property.stringValue ) );
                index = EditorGUI.Popup( position, property.displayName, index, list );

                property.stringValue = list[ index ];
            } else if ( property.propertyType == SerializedPropertyType.Integer ) {
                property.intValue = EditorGUI.Popup( position, property.displayName, property.intValue, list );
            } else {
                base.OnGUI( position, property, label );
            }
        }

}