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Assets/Scripts/UI/Common/Extensions/TabItemDataExtensions.cs

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+using System.Collections.Generic;
+using System.Linq;
+
+namespace NBF
+{
+    public static class TabItemDataExtensions
+    {
+        /// <summary>
+        /// 为TabItemData列表添加"全部"选项卡
+        /// </summary>
+        /// <param name="tabItems">原始选项卡列表</param>
+        /// <returns>包含"全部"选项卡的新列表</returns>
+        public static void AddAllTabItem(this List<TabItemData> tabItems)
+        {
+            //判断是否存在二级目录，有二级目录则只在二级目录有"全部"选项卡
+            if (tabItems.Any(tabItem => tabItem.Children.Count > 0))
+            {
+                foreach (var tabItemData in tabItems)
+                {
+                    if (tabItemData.Children.Count > 0)
+                    {
+                        var allTab = new TabItemData
+                        {
+                            Id = 0,
+                            Key = "All",
+                            Icon = "All",
+                            IsAll = true,
+                            Items = GetAllItemsFromTabs(tabItemData.Children)
+                        };
+                        tabItemData.Children.Insert(0, allTab);
+                    }
+                }
+            }
+            else
+            {
+                var allTab = new TabItemData
+                {
+                    Id = 0,
+                    Key = "All",
+                    Icon = "All",
+                    IsAll = true,
+                    Items = GetAllItemsFromTabs(tabItems)
+                };
+                tabItems.Insert(0, allTab);
+            }
+        }
+
+        /// <summary>
+        /// 递归获取所有选项卡中的项目（去重）
+        /// </summary>
+        private static List<object> GetAllItemsFromTabs(List<TabItemData> tabs)
+        {
+            var allItems = new List<object>();
+
+            foreach (var tab in tabs)
+            {
+                // if (addListTitle)
+                // {
+                //     allItems.Add(new ClassifyListTitleData()
+                //     {
+                //         Title = tab.Key
+                //     });
+                // }
+                
+                // 添加当前选项卡的项目
+                if (tab.Items != null)
+                {
+                    allItems.AddRange(tab.Items);
+                }
+            }
+
+            // 去重处理（基于引用相等，如果需要基于内容去重需要重写Equals方法）
+            return allItems.Distinct().ToList();
+        }
+
+        public static void TabItemDataAddListTitle(this TabItemData tabItem)
+        {
+            if (tabItem.Items == null || tabItem.Items.Count < 1) return;
+            var hasListTitle = tabItem.Items.OfType<ClassifyListTitleData>().Any();
+            if (!hasListTitle)
+            {
+                tabItem.Items.Insert(0, new ClassifyListTitleData()
+                {
+                    Title = tabItem.Key
+                });
+            }
+        }
+    }
+}