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

namespace SamplePre.UIWpf.BaseWindows
{
    public class BaseWindow : Window
    {
        public BaseWindow()
        {
            //InitializeStyle();
            //this.Loaded += delegate
            //{
            //    InitializeEvent();
            //};

            InitializeStyle();
            // 一定要在 Loaded 里执行，确保模板已加载
            Loaded += (s, e) => InitializeEvent();


        }


        private void InitializeEvent()
        {
            // ✅ 关键：从可视化树查找模板内的元素
            Button btnMin = FindChild<Button>(this, "btnMin");
            Button btnMax = FindChild<Button>(this, "btnMax");
            Button btnClose = FindChild<Button>(this, "btnClose");
            Border borderTitle = FindChild<Border>(this, "borderTitle");

            // 最小化
            if (btnMin != null)
                btnMin.Click += (s, e) => WindowState = WindowState.Minimized;

            // 最大化/还原
            if (btnMax != null)
                btnMax.Click += (s, e) =>
                    WindowState = WindowState == WindowState.Normal ? WindowState.Maximized : WindowState.Normal;

            // 关闭
            if (btnClose != null)
                btnClose.Click += (s, e) => Close();

            // 拖动窗口
            if (borderTitle != null)
            {
                borderTitle.MouseMove += (s, e) =>
                {
                    if (e.LeftButton == MouseButtonState.Pressed)
                        DragMove();
                };

                // 双击标题最大化
                borderTitle.MouseLeftButtonDown += (s, e) =>
                {
                    if (e.ClickCount >= 2)
                        WindowState = WindowState == WindowState.Normal ? WindowState.Maximized : WindowState.Normal;
                };
            }
        }

        #region 万能查找控件方法（核心）
        /// <summary>
        /// 在可视化树中查找指定名称的子元素
        /// </summary>
        public static T FindChild<T>(DependencyObject parent, string childName) where T : DependencyObject
        {
            if (parent == null) return null;

            T foundChild = null;
            int childrenCount = VisualTreeHelper.GetChildrenCount(parent);

            for (int i = 0; i < childrenCount; i++)
            {
                var child = VisualTreeHelper.GetChild(parent, i);

                if (child is T tChild && child is FrameworkElement element && element.Name == childName)
                {
                    foundChild = tChild;
                    break;
                }

                foundChild = FindChild<T>(child, childName);
                if (foundChild != null) break;
            }
            return foundChild;
        }
        #endregion

        private void InitializeStyle()
        {
            Style = (Style)Application.Current.Resources["BaseWindowStyle"];
        }

        ////==================================================
        //private void InitializeEvent()
        //{
        //    ControlTemplate baseWindowTemplate = (ControlTemplate)App.Current.Resources["BaseWindowControlTemplate"];

        //    //Button minBtn = (Button)baseWindowTemplate.FindName("btnMin", this);
        //    //minBtn.Click += delegate
        //    //{

        //    //    this.WindowState = WindowState.Minimized;
        //    //};

        //    //Button maxBtn = (Button)baseWindowTemplate.FindName("btnMax", this);
        //    //maxBtn.Click += delegate
        //    //{

        //    //    this.WindowState = (this.WindowState == WindowState.Normal ? WindowState.Maximized : WindowState.Normal);
        //    //};

        //    //Button closeBtn = this.FindName("btnClose") as Button;

        //    Button closeBtn = (Button)baseWindowTemplate.FindName("btnClose", this);
        //    closeBtn.Click += delegate
        //    {
        //        this.Close();
        //    };

        //    Border borderTitle = (Border)baseWindowTemplate.FindName("borderTitle", this);
        //    borderTitle.MouseMove += delegate (object sender, MouseEventArgs e)
        //    {
        //        if (e.LeftButton == MouseButtonState.Pressed)
        //        {
        //            this.DragMove();
        //        }
        //    };
        //    borderTitle.MouseLeftButtonDown += delegate (object sender, MouseButtonEventArgs e)
        //    {
        //        if (e.ClickCount >= 2)
        //        {
        //            //maxBtn.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
        //        }
        //    };
        //}


        //private void InitializeStyle()
        //{
        //    this.Style = (Style)App.Current.Resources["BaseWindowStyle"];
        //}



    }
}