using System;
using UnityEngine;

public abstract class UIView : MonoBehaviour
{
    //UIView名字
    public string ViewName { get; set; }
    public abstract UIViewType ViewType { get; }
    public Action<UIView> OnShow;
    public Action<UIView> OnHide;
    public int Z_Index
    {
        get
        {
            return transform.GetSiblingIndex();
        }
        set
        {
            transform.SetSiblingIndex(value);
        }
    }
    public virtual void Show()
    {
        //transform.GetSiblingIndex
        //没有显示的情况下才显示
        if (!gameObject.activeSelf)
        {
            gameObject.SetActive(true);
            if (OnShow != null)
            {
                OnShow(this);
            }
            // 设置层级到最上层
            transform.SetAsLastSibling();
            // 刷新
            Refresh();
        }
    }
    public virtual void Hide()
    {
        //显示的情况下才隐藏
        if (gameObject!=null&&gameObject.activeSelf)
        {
            gameObject.SetActive(false);
            if (OnHide != null)
            {
                OnHide(this);
            }
        }
    }
    public virtual void Refresh()
    {

    }
    //页面销毁是通知UIManager自己销毁了
    public virtual void OnDestroy()
    {
        OnShow = null;
        OnHide = null;
        UIManager.DestroyView(ViewName);
    }
}
public enum UIViewType
{
    Normal,
    Popup
}