using System;
using Cysharp.Threading.Tasks;
using Unity.Mathematics;

namespace BITKit.UX
{
	/// <summary>
	/// 基本UX服务(GUI管理器),主要通过加载叠加面板实现
	/// </summary>
	public interface IUXService:IDisposable
	{
		public string SettingsPath { get; set; }
		object Root { get; }
		/// <summary>
		/// 初始化
		/// </summary>
		/// <returns></returns>
		UniTask InitializeAsync();
		/// <summary>
		/// 注册面板,加入注册队列
		/// </summary>
		/// <param name="panel">UX面板</param>
		void Register(IUXPanel panel);
		/// <summary>
		/// 注销面板
		/// </summary>
		/// <param name="panel">UX面板</param>
		void UnRegister(IUXPanel panel);
		/// <summary>
		/// 进入面板
		/// </summary>
		/// <typeparam name="T">面板类型</typeparam>
		void Entry<T>() where T : IUXPanel;
		/// <summary>
		/// 返回上一个面板
		/// </summary>
		void Return();
		/// <summary>
		/// 进入面板
		/// </summary>
		/// <param name="panel">已实例化的面板</param>
		void Entry(IUXPanel panel);
		/// <summary>
		///  进入面板
		/// </summary>
		/// <param name="panelName">面板名称</param>
		void Entry(string panelName);
		/// <summary>
		/// 当前面板
		/// </summary>
		IUXPanel CurrentPanel { get; }
		/// <summary>
		/// 面板改变回调
		/// </summary>
		public event Action<IUXPanel, IUXPanel> OnPanelChanged;
		/// <summary>
		/// 获取可交互的元素
		/// </summary>
		/// <param name="position"></param>
		/// <param name="obj"></param>
		/// <returns></returns>
		public bool TryPick(float2 position, out object obj);
	}
}