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

/// <summary>
/// 星星组件类型2
/// 空心星星
/// </summary>
public class UI_HeroStarComponment2 : MonoBehaviour 
{
    /// <summary>
    /// 模型
    /// </summary>
    private GameObject mPrefab = null;

    /// <summary>
    /// 总数码
    /// </summary>
    private int _totalNum = -1;

    /// <summary>
    /// 当前激活数目
    /// </summary>
    private int _curNum = -1;

    /// <summary>
    /// 总数
    /// </summary>
    public int totalNum
    {
        get
        {
            return _totalNum;
        }

        set
        {
            if (_totalNum != value)
            {
                _totalNum = value;
                onTotalNumChanged();
            }
        }
    }

    /// <summary>
    /// 当前数
    /// </summary>
    public int curNum
    {
        get
        {
            return _curNum;
        }

        set
        {
            if (_curNum != value)
            {
                _curNum = value;
                onTotalNumChanged();
            }
        }
    }

    /// <summary>
    /// 节点列表
    /// </summary>
    private List<GameObject> elements = new List<GameObject>();
  
    /// <summary>
    ///  显示星星啦啦啦 
    /// </summary>
    private void onTotalNumChanged()
    {
        if (mPrefab == null)
        {
            mPrefab = this.transform.Find("prefab").gameObject;
            mPrefab.GetComponent<LayoutElement>().ignoreLayout = true;
            mPrefab.SetActive(false);
        }

        elements.Clear();
        for (int i = 0; i < this.transform.childCount; i++)
        {
            GameObject temp = this.transform.GetChild(i).gameObject;
            if (temp.name == "prefab")
            {
                continue;
            }
            else
            {
                elements.Add(temp);
            }
        }

        if (elements.Count >= totalNum)
        {
            for (int i = 0; i < elements.Count; i++)
            {
                GameObject card = elements[i];
            
                if (i < totalNum)
                {
                    ////已经有了,重新激活就行了
                    card.GetComponent<LayoutElement>().ignoreLayout = false;                
                    card.SetActive(true);
                }
                else
                {
                    card.GetComponent<LayoutElement>().ignoreLayout = true;                    
                    card.SetActive(false);
                }
            }
        }
        else
        {
            ////全部激活
            foreach (GameObject card in elements)
            {
                card.GetComponent<LayoutElement>().ignoreLayout = false;  
                card.SetActive(true);
            }

            for (int i = elements.Count; i < totalNum; i++)
            {
                ////创建新的  
                GameObject card = (GameObject)Instantiate(mPrefab);
                card.name = i.ToString();
                card.transform.SetParent(this.transform);
                card.transform.localScale = Vector3.one;
                card.transform.localPosition = Vector3.zero;
               
                card.GetComponent<LayoutElement>().ignoreLayout = false;
                card.SetActive(true);
                elements.Add(card);
            }
        }

        for (int i = 0; i < totalNum; i++)
        {
            GameObject card = elements[i];
            GameObject selected = card.transform.Find("selected").gameObject;

            if (i < curNum)
            {
                selected.SetActive(true);
            }
            else
            {
                selected.SetActive(false);
            }
        }
    }    
}