using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System;

/// <summary>
/// qqwang:
/// 自定义的单选按钮
/// </summary>
public class MyToggle : MonoBehaviour
{
    /// <summary>
    /// 选中状态
    /// </summary>
    private GameObject isOnGameObject;

    /// <summary>
    /// 关闭状态
    /// </summary>
    private GameObject isOffGameObject;

    /// <summary>
    /// 单选状态的管理者
    /// </summary>
    private Toggle toggle;

    /// <summary>
    /// 按钮的选中发生状态对外提供的处理回调
    /// </summary>
    private Action<bool> OnToggleValueChangedCallBack;

    /// <summary>
    /// 控件的初始化处理
    /// </summary>
    /// <param name="_valueChangedCallBack">按钮的选中状态发生变化之后，要对外提供的一个回调处理 参数bool,false=关闭</param>
    /// <param name="defaultToggleIsOn">单选按钮的默认状态true= 选中 false= 关闭</param>
    public void Init(Action<bool> _valueChangedCallBack, bool defaultToggleIsOn)
    {
        OnToggleValueChangedCallBack = _valueChangedCallBack;
        isOnGameObject = this.transform.Find("SwitchOn").gameObject;
        isOffGameObject = this.transform.Find("SwitchOff").gameObject;
        toggle = this.gameObject.GetComponent<Toggle>();
        if (toggle == null)
        {
            toggle = this.gameObject.AddComponent<Toggle>();
        }

        ////读取游戏内的音乐音效配置  
        SetToggleState(defaultToggleIsOn);
        toggle.isOn = defaultToggleIsOn;

        toggle.onValueChanged.AddListener(OnValueChanged);
    }

    /// <summary>
    /// 设置不同的状态UI显示
    /// </summary> 
    /// <param name="isOn">true= 选中 false= 关闭</param>
    private void SetToggleState(bool isOn)
    {
        isOnGameObject.SetActive(isOn);
        isOffGameObject.SetActive(!isOn);
    }

    /// <summary>
    /// toggle按钮的选中状态发生变化的处理函数
    /// </summary>
    /// <param name="isOn">true= 选中 false= 关闭</param>
    public void OnValueChanged(bool isOn)
    {
        SetToggleState(isOn);

        if (OnToggleValueChangedCallBack != null)
        {
            OnToggleValueChangedCallBack(isOn);
        }
    }
}