ProjectDDD/Packages/SLUnity/SLUI/SLUIWindowsList.cs

using System.Collections.Generic;
using UnityEngine;

namespace Superlazy.UI
{
    [RequireComponent(typeof(SLUIButton))]
    public class SLUIWindowsList : SLUIComponent
    {
        private static readonly List<SLUIButton> buttons = new List<SLUIButton>();
        private SLUIButton button;

        protected override void Validate()
        {
            button = GetComponent<SLUIButton>();
        }

        protected override void Init()
        {
        }

        protected override void Enable()
        {
            if (button)
            {
                buttons.Add(button);
            }
        }

        protected override void Disable()
        {
            if (button)
            {
                buttons.Remove(button);
            }
        }

        public static bool OnEscape()
        {
            var count = buttons.Count;
            if (count == 0)
            {
                return false;
            }

            var button = buttons[count - 1];
            button.ButtonAction();

            if (count == 1) return true;
            buttons.RemoveAt(count - 1);
            return true;
        }
    }
}