// ***********************************************************************
// Assembly         : Unity
// Author           : Kimch
// Created          : 2018-03-29
//
// Last Modified By : 
// Last Modified On : 
// ***********************************************************************
// <copyright file= "KUIToggleGroup" company="Kunpo"></copyright>
// <summary></summary>
// ***********************************************************************
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

[RequireComponent(typeof(ToggleGroup))]
public class KUIToggleGroup : MonoBehaviour
{
    public class ToggleEvent : UnityEvent<int>
    {
        public ToggleEvent()
        {
        }
    }

    public readonly ToggleEvent onToggleSelected = new ToggleEvent();
    private Toggle[] _toggles;

    public Toggle[] toggles => _toggles;

    private void OnToggleValueChanged(bool value)
    {
        if (value)
        {
            for (int i = 0; i < _toggles.Length; i++)
            {
                if (_toggles[i].isOn)
                {
                    onToggleSelected.Invoke(i);
                    break;
                }
            }
        }
    }

    #region MonoBehaviour

    private void Awake()
    {
        _toggles = GetComponentsInChildren<Toggle>(true);
        foreach (var toggle in _toggles)
        {
            toggle.onValueChanged.AddListener(OnToggleValueChanged);
        }
    }

    #endregion
}