using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using MuHua;

/// <summary>
/// UI模块
/// </summary>
public class ModuleUI : ModuleUISingle<ModuleUI> {
	/// <summary> 当前页面 </summary>
	public static Page Current;
	/// <summary> 回退页面 </summary>
	public static Page BackPage;
	/// <summary> 控件列表 </summary>
	public static List<UIControl> controls = new List<UIControl>();
	/// <summary> 页面跳转事件 </summary>
	public static event Action<Page> OnJumpPage;

	/// <summary> 跳转页面 </summary>
	public static void Settings(Page pageType) {
		BackPage = Current;
		Current = pageType;
		OnJumpPage?.Invoke(Current);
	}
	/// <summary> 回退页面 </summary>
	public static void Back() {
		Current = BackPage;
		OnJumpPage?.Invoke(Current);
	}
	/// <summary> 添加控件 </summary>
	public static void AddControl(UIControl control) {
		controls.Add(control);
	}
	/// <summary> 移除控件 </summary>
	public static void RemoveControl(UIControl control) {
		controls.Remove(control);
	}

	public override VisualElement Element => document.rootVisualElement;

	protected override void Awake() => NoReplace();

	private void Update() => controls.ForEach(control => control.Update());

	private void OnDestroy() => controls.ForEach(control => control.Dispose());
}
/// <summary>
/// 页面
/// </summary>
public enum Page {
	/// <summary> 无 </summary>
	None,
	/// <summary> 登录 </summary>
	Login,
}