FieldWorkClient/Provider/MinIOSearchBehavior.cs

using HeBianGu.Base.WpfBase;
using HeBianGu.Control.Explorer;
using HeBianGu.General.WpfControlLib;
using Hopetry.Provider.Behaviors;
using Minio.DataModel.Args;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Threading;

namespace Hopetry.Provider.Behaviors
{
    public class MinIOSearchBehavior : Behavior<Explorer>
    {
        #region
        //private ExplorerMinIOBehavior _minioBehavior;
        //private TextBox _searchBox;
        //private DispatcherTimer _searchDebounceTimer;

        //protected override void OnAttached()
        //{
        //    base.OnAttached();

        //    AssociatedObject.Loaded += (s, e) =>
        //    {
        //        _minioBehavior = Interaction.GetBehaviors(AssociatedObject)
        //            .OfType<ExplorerMinIOBehavior>()
        //            .FirstOrDefault();

        //        _searchBox = FindSearchBox();
        //        if (_searchBox != null)
        //        {
        //            // 移除原来的 TextChanged 事件
        //            //_searchBox.TextChanged -= OnSearchTextChanged;

        //            // 改为监听 KeyDown 事件
        //            _searchBox.KeyDown += OnSearchKeyDown;
        //        }
        //    };
        //}

        //private void OnSearchKeyDown(object sender, KeyEventArgs e)
        //{
        //    // 如果按下的是 Enter 键，才执行搜索
        //    if (e.Key == Key.Enter)
        //    {
        //        if (_minioBehavior == null || !_minioBehavior.UseMinIO || _searchBox == null)
        //            return;

        //        string searchText = _searchBox.Text;

        //        if (!string.IsNullOrEmpty(searchText))
        //        {
        //            _minioBehavior.RefreshMinIOPath(AssociatedObject.CurrentPath, searchText);
        //        }
        //        else
        //        {
        //            _minioBehavior.RefreshMinIOPath(AssociatedObject.CurrentPath);
        //        }
        //    }
        //}



        //private TextBox FindSearchBox()
        //{
        //    var searchBox = FindVisualChildren<TextBox>(AssociatedObject)
        //        .FirstOrDefault(tb =>
        //            tb.Style == AssociatedObject.FindResource(TextBoxKeys.ClearSingle) as Style &&
        //            BindingOperations.GetBindingExpression(tb, TextBox.TextProperty)?.ParentBinding?.Path?.Path == "AllSearchPattern"
        //        );

        //    if (searchBox != null)
        //    {
        //        // 1. 移除默认的 TextChanged 绑定
        //        BindingOperations.ClearBinding(searchBox, TextBox.TextProperty);

        //        // 2. 阻止 Explorer 内部更新 AllSearchPattern
        //        AssociatedObject.AllSearchPattern = null; // 清空默认值

        //        // 3. 改为手动处理 Enter 键搜索
        //        searchBox.KeyDown += OnSearchKeyDown;
        //    }

        //    return searchBox;
        //}

        //private static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
        //{
        //    if (depObj != null)
        //    {
        //        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
        //        {
        //            DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
        //            if (child != null && child is T t)
        //            {
        //                yield return t;
        //            }

        //            foreach (T childOfChild in FindVisualChildren<T>(child))
        //            {
        //                yield return childOfChild;
        //            }
        //        }
        //    }
        //}

        //protected override void OnDetaching()
        //{
        //    if (_searchBox != null)
        //    {
        //        _searchBox.KeyDown -= OnSearchKeyDown;
        //    }
        //    base.OnDetaching();
        //}
        #endregion

        #region ceshi
        private ExplorerMinIOBehavior _minioBehavior;
        private TextBox _searchBox;
        private bool _isHandlingSearch; // 防止递归调用
        private bool _suppressTextChanged;

        protected override void OnAttached()
        {
            base.OnAttached();

            AssociatedObject.Loaded += OnExplorerLoaded;
        }

        private void OnExplorerLoaded(object sender, RoutedEventArgs e)
        {
            _minioBehavior = Interaction.GetBehaviors(AssociatedObject)
                .OfType<ExplorerMinIOBehavior>()
                .FirstOrDefault();

            _searchBox = FindSearchBox();
            if (_searchBox != null)
            {
                // 完全接管搜索框
                TakeOverSearchBox();
            }
        }

        private void TakeOverSearchBox()
        {
            // 1. 解除原生绑定
            BindingOperations.ClearBinding(_searchBox, TextBox.TextProperty);

            // 3. 阻止Explorer内部处理搜索
            AssociatedObject.AllSearchPattern = null;

            // 4. 确保初始状态
            _searchBox.Text = "";
            // 3. 设置我们自己的绑定
            _searchBox.SetBinding(TextBox.TextProperty, new Binding
            {
                Source = this,
                Path = new PropertyPath("SearchText"),
                Mode = BindingMode.TwoWay,
                UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
            });
            // 5. 只保留我们的KeyDown处理
            _searchBox.KeyDown -= OnSearchKeyDown;
            _searchBox.KeyDown += OnSearchKeyDown;
        }
        // 使用依赖属性来管理搜索文本
        public string SearchText
        {
            get { return (string)GetValue(SearchTextProperty); }
            set { SetValue(SearchTextProperty, value); }
        }

        public static readonly DependencyProperty SearchTextProperty =
            DependencyProperty.Register("SearchText", typeof(string), typeof(MinIOSearchBehavior),
            new PropertyMetadata(null, OnSearchTextChanged));

        private static void OnSearchTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            return;
        }

        private void OnSearchKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key != Key.Enter || _isHandlingSearch)
                return;

            _isHandlingSearch = true;
            try
            {
                if (_minioBehavior == null || !_minioBehavior.UseMinIO || _searchBox == null)
                    return;

                string searchText = _searchBox.Text.Trim();

                // 确保CurrentPath有效
                if (string.IsNullOrEmpty(AssociatedObject.CurrentPath))
                {
                    // 设置一个默认路径，避免显示根目录
                    AssociatedObject.CurrentPath = ""; // 替换为你的MinIO默认路径
                }

                if (!string.IsNullOrEmpty(searchText))
                {
                    _minioBehavior.RefreshMinIOPath(AssociatedObject.CurrentPath, searchText);
                }
                else
                {
                    _minioBehavior.RefreshMinIOPath(AssociatedObject.CurrentPath);
                }
            }
            finally
            {
                _isHandlingSearch = false;
            }
        }

        private TextBox FindSearchBox()
        {
            return FindVisualChildren<TextBox>(AssociatedObject)
                .FirstOrDefault(tb =>
                    tb.Style == AssociatedObject.FindResource(TextBoxKeys.ClearSingle) as Style &&
                    BindingOperations.GetBindingExpression(tb, TextBox.TextProperty)?.ParentBinding?.Path?.Path == "AllSearchPattern"
                );
        }

        private static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
        {
            if (depObj == null) yield break;

            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
            {
                var child = VisualTreeHelper.GetChild(depObj, i);
                if (child is T t)
                    yield return t;

                foreach (var childOfChild in FindVisualChildren<T>(child))
                    yield return childOfChild;
            }
        }

        protected override void OnDetaching()
        {
            if (_searchBox != null)
            {
                _searchBox.KeyDown -= OnSearchKeyDown;
            }
            AssociatedObject.Loaded -= OnExplorerLoaded;
            base.OnDetaching();
        }
        #endregion

    }
}