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

namespace HJDFrameWork
{
    public abstract class ViewBase : MonoBehaviour, IView
    {
        
        private Dictionary<string, List<UIBehaviour>> _ViewDataList = new Dictionary<string, List<UIBehaviour>>();

        public virtual void Hide()
        {
            this.gameObject.SetActive(false);
        }

        public virtual void Init()
        {
            //或的控件并保存在字典中，可根据自己UI搭载的控件更改
            FinChildControl<Button>();
            FinChildControl<Image>();
            FinChildControl<Scrollbar>();
            FinChildControl<Text>();
            FinChildControl<Toggle>();
            FinChildControl<RawImage>();
            //注册到ViewManager
            ViewManager.Instance.Register(this.name, this);

        }

        public virtual void Show()
        {
            this.gameObject.SetActive(true);
        }

        //返回名为controlName的UI身上的T控件《若没有则返回null
        public T GetViewData<T>(string controlName) where T : UIBehaviour
        {
           
            
            if (_ViewDataList.ContainsKey(controlName))
            {
                for (int i = 0; i < _ViewDataList[controlName].Count; i++)
                {
                    if (_ViewDataList[controlName][i] is T)//使用is判断是否为T控件
                        return _ViewDataList[controlName][i] as T;
                }
            }
            return null;
        }

        private void FinChildControl<T>() where T : UIBehaviour
        {
            T[] controls = this.GetComponentsInChildren<T>();//注意用的是GetComents,返回的是一组
            string objName;//使用名字对控件按物体分类

            if (controls.Length < 0) return;

            for (int i = 0; i < controls.Length; i++)
            {
                objName = controls[i].gameObject.name;
                if (_ViewDataList.ContainsKey(objName))
                    _ViewDataList[objName].Add(controls[i]);//注意controlDic中存储的类型为<string, List<UIBehaviour>,所以我们的同一个UI的所有控件都在这个链表中
                else
                    _ViewDataList.Add(objName, new List<UIBehaviour>() { controls[i] });//添加UI到字典中
            }
            Debug.Log(this.name + "查找了" + controls.Length + typeof(T).Name+"组件");
        }

        protected void ButtonAddlisten(Button button, Action action)
        {
            if (button != null)
            {
                button.onClick.AddListener(() => { action(); });
            }
            else
            {
                Debug.Log(button.name + "按钮功能注册失败");
            }
        }

        protected ItemSign GetItem(string Name)
        {
            ItemSign item = null;
            if (ItemManager.Instance != null)
            {
               item= ItemManager.Instance.GetItem(Name);
            }
            if (item != null) return item;

            return null;
        }

        
    }
}