using UnityEditor;
using UnityEngine;

namespace Funique
{
    [CustomPropertyDrawer(typeof(DisableIf))]
    public class DisableIfDrawer : IfDrawerBase
    {
        public override void OnGUI(Rect position, SerializedProperty p, GUIContent label)
        {
            DisableIf a = (DisableIf)attribute;
            bool havesomethingtodetect = a.Target != string.Empty;
            SerializedProperty t = GetPointer(a.Target, p);

            bool newState = true;
            bool oldState = GUI.enabled;

            if (!havesomethingtodetect) newState = !a.DisabledState;
            else if (t == null) Debug.LogWarning("[DisableIf] Invalid Property Name for Attribute.", p.serializedObject.targetObject);
            else newState = t.boolValue != a.DisabledState;

            GUI.enabled = newState;
            EditorGUI.PropertyField(position, p, label, true);
            GUI.enabled = oldState;
        }

        public override float GetPropertyHeight(SerializedProperty p, GUIContent label)
        {
            return EditorGUI.GetPropertyHeight(p, true);
        }
    }
}