using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using AX.MessageSystem;

[RequireComponent(typeof(Toggle))]
[RequireComponent(typeof(LayoutElement))]
public class FirstNodeItem : MonoBehaviour
{
    public FirstNodeObject obj;
    public int index;
    private Toggle toggle;
    private LayoutElement element;
    public Text uiName;
    private void Awake()
    {
        toggle = GetComponent<Toggle>();
        toggle.onValueChanged.AddListener(ValueChanged);
        element = GetComponent<LayoutElement>();
    }
    // Use this for initialization
    void Start()
    {
        MessageDispatcher.AddListener("DeleteFirstNode",ChangeIndex);
        MessageDispatcher.AddListener("ReplayFirstNode", SelectNode);
    }
    private void OnDestroy()
    {
        MessageDispatcher.RemoveListener("DeleteFirstNode", ChangeIndex);
        MessageDispatcher.RemoveListener("ReplayFirstNode", SelectNode);
    }
    /// <summary>
    /// 播放指定一级节点
    /// </summary>
    /// <param name="data"></param>
    private void SelectNode(IMessage data)
    {
        var nodeID = (int)data.Data;
        if (obj.nodeID == nodeID)
        {
            SecondNodeItem.replay = true;
            toggle.isOn = true;    
        }
    }
    /// <summary>
    /// 删除节点后重新调整显示索引
    /// </summary>
    /// <param name="obj"></param>
    private void ChangeIndex(IMessage obj)
    {
        var delIndex = (int)obj.Data;
        if (index> delIndex)
        {
            index--;
            SetUI();
        }
    }

    // Update is called once per frame
    void Update()
    {

    }
    private void ValueChanged(bool isOn)
    {
        if (isOn)
        {
            FirstNodeManager.selectNode = obj;
            MessageDispatcher.SendMessage("FirstNodeSelected");//发送消息，改变二级节点UI
        }     
        SetUI();
    }
    /// <summary>
    /// 设置节点属性
    /// </summary>
    /// <param name="nodeOjbect"></param>
    /// <param name="nodeIndex"></param>
    public void SetItem(FirstNodeObject nodeOjbect, int nodeIndex)
    {
        obj = nodeOjbect;
        index = nodeIndex;
        if (index == 0)
        {     
            toggle.isOn = true;
        }
        SetUI();
    }
    /// <summary>
    /// 设置节点显示文字
    /// </summary>
    public void SetUI()
    {
        if (toggle.isOn)
        {
            uiName.text = FirstNodeManager.ToChinese(index) + "、" + obj.nodeName;
            element.flexibleWidth = 3;
        }
        else
        {
            uiName.text = FirstNodeManager.ToChinese(index);
            element.flexibleWidth = 1;
        }        
    }
}