using Avalonia.Controls;
using Avalonia.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MVVMExample
{
    public static partial class Helper
    {
        /// <summary>
        /// 绑定自定义窗口标题栏与尺寸调整句柄
        /// </summary>
        /// <param name="window">要进行绑定的窗口</param>
        /// <param name="handle">窗口位置拖动句柄</param>
        /// <param name="slider">窗口尺寸调整句柄</param>
        /// <param name="maxBut">最大化按钮</param>
        /// <param name="minBut">最小化按钮</param>
        /// <param name="closeBut">关闭按钮</param>
        public static void BindWindowEdge(this Window window, InputElement? handle = null, InputElement? slider = null, Button? maxBut = null, Button? minBut = null, Button? closeBut = null)
        {
            // 隐藏窗口默认标题栏与尺寸调整句柄
            window.SystemDecorations = SystemDecorations.None;

            if (handle != null)
                handle.PointerPressed += (s, e) =>
                {
                    if (e.GetCurrentPoint(window).Properties.IsLeftButtonPressed) window.BeginMoveDrag(e); // 关键：开始窗口拖拽
                };
            if (slider != null)
                slider.PointerPressed += (s, e) =>
                {
                    if (e.GetCurrentPoint(window).Properties.IsLeftButtonPressed) window.BeginResizeDrag(WindowEdge.SouthEast, e);
                };
            if (maxBut != null)
                maxBut.Click += (s, e) =>
                {
                    window.WindowState = window.WindowState == WindowState.Maximized ? WindowState.Normal : WindowState.Maximized;
                };
            if (minBut != null)
                minBut.Click += (s, e) =>
                {
                    window.WindowState = WindowState.Minimized;
                };
            if (closeBut != null)
                closeBut.Click += (s, e) =>
                {
                    window.Close();
                };
        }
    }
}