完成翻页管理器

Runtime/FlipPage/FlipPageComponentManager.cs

@@ -1,8 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using Deconstruction.Runtime.UI;
 using JetBrains.Annotations;
 using Sirenix.OdinInspector;
+using TMPro;
 using UnityEngine;
 using UnityEngine.UI;
 using XericLibrary.Runtime.MacroLibrary;
@@ -120,7 +122,19 @@ namespace XericUI.FlipPage
 
         #region 字段属性
 
-        protected ToggleGroup ToggleGroup;
+        
+        private ToggleGroup _toggleGroup;
+
+        protected ToggleGroup ToggleGroup
+        {
+            get
+            {
+                if (_toggleGroup != null)
+                    return _toggleGroup;
+                _toggleGroup = transform.GetComponentAnyway<ToggleGroup>();
+                return _toggleGroup;
+            }
+        }
 
         #endregion
         
@@ -138,7 +152,7 @@ namespace XericUI.FlipPage
             [LabelText("页面翻页按钮")] 
 #endif
             [CanBeNull]
-            internal ObjectVessel<Selectable, TMPro.TMP_Text> pageIndexSelectable;
+            internal ObjectVessel<Selectable, TMPro.TMP_Text> pageSelectableVessel;
             
             protected internal override void OnPageVisible(bool quickVisit)
             {
@@ -146,18 +160,20 @@ namespace XericUI.FlipPage
                     return;
 
                 // 自动补全外部交互动画
-                if (pageIndexSelectable.IsValidVessel() && 
+                if (pageSelectableVessel.IsValidVessel())
-                    pageIndexSelectable.Target0 is Toggle toggle &&
+                    SwitchSelectableVesselType(pageSelectableVessel.Target0,
-                    !toggle.isOn)
+                        null,
-                {
+                        toggle =>
-                    toggle.SetIsOnWithoutNotify(true);
+                        {
-                    
+                            if (!toggle.isOn)
-                }
+                                toggle.SetIsOnWithoutNotify(true);
+                        });
             }
 
             protected internal override void OnPageInvisible(bool quickVisit)
             {
             }
+            
         }
 
         /// <summary>
@@ -202,86 +218,128 @@ namespace XericUI.FlipPage
             pageButtonPool.Init();
             
             // 根据组件类型创建相关内容
-            var prefabSelectable = pageButtonPool.Prefab.GetComponent<Selectable>();
+            // var prefabSelectable = pageButtonPool.Prefab.GetComponent<Selectable>();
-            switch (prefabSelectable)
+
-            {
-                // 单选项就创建但选项组
-                case Toggle toggle:
-                    ToggleGroup = transform.GetComponentAnyway<ToggleGroup>();
-                    break;
-                case Button button: 
-                    break;
-                default: 
-                    break;
-            }
         }
 
+        #endregion
+
+        #region 翻页功能
+        
         protected override void OnFlipPage()
         {
             base.OnFlipPage();
 
-            
             // 刷新所有成员的层级顺序
             for (int i = 0; i < pageSelectButton.Count; i++)
             {
                 pageSelectButton[i].Target0.transform.SetSiblingIndex(i);
             }
+
+            if (Currentpage is PageComponentInfo componentPage && 
+                componentPage.pageSelectableVessel.IsValidVessel())
+            {
+                SwitchSelectableVesselType(componentPage.pageSelectableVessel.Target0,
+                    null,
+                    toggle =>
+                    {
+                        if (!toggle.isOn)
+                            toggle.isOn = true;
+                    });
+            }
         }
 
         public override void FlipPage(int pageIndex, bool forceRefresh = false)
         {
             base.FlipPage(pageIndex, forceRefresh);
             
-        }
-
-        public override void AddPageFirst(PageInfo pageInfo)
-        {
-            if (pageInfo is not PageComponentInfo componentPageInfo)
-            {
-                Debug.LogError($"页面容器{currentPage}不支持当前管理器，其必须由{nameof(FlipPageComponentManager)}.{nameof(PageComponentInfo)}继承/声名，否则无法支持后续功能", this);
-                return;
-            }
-
-            AddPageIndexButton(componentPageInfo);
-            base.AddPageFirst(pageInfo);
-            
-            RefreshLabelTextTotalPageCount();
             RefreshPageIndeButtonState();
         }
 
-        public override void AddPageLast(PageInfo pageInfo)
+        public override PageInfo AddPageFirst(PageInfo pageInfo)
         {
             if (pageInfo is not PageComponentInfo componentPageInfo)
             {
-                Debug.LogError($"页面容器{currentPage}不支持当前管理器，其必须由{nameof(FlipPageComponentManager)}.{nameof(PageComponentInfo)}继承/声名，否则无法支持后续功能", this);
+                Debug.LogError($"页面容器{Currentpage}不支持当前管理器，其必须由{nameof(FlipPageComponentManager)}.{nameof(PageComponentInfo)}继承/声名，否则无法支持后续功能", this);
-                return;
+                return null;
             }
-
+            // 页面基础初始化
+            var result = base.AddPageFirst(pageInfo);
+            // 添加选择按钮
             AddPageIndexButton(componentPageInfo);
-            base.AddPageLast(pageInfo);
+            // 刷新选择按钮显示状态
-            
-            RefreshLabelTextTotalPageCount();
             RefreshPageIndeButtonState();
+            // 刷新总页数
+            RefreshLabelTextTotalPageCount();
+            return result;
+        }
+
+        public override PageInfo AddPageLast(PageInfo pageInfo)
+        {
+            if (pageInfo is not PageComponentInfo componentPageInfo)
+            {
+                Debug.LogError($"页面容器{Currentpage}不支持当前管理器，其必须由{nameof(FlipPageComponentManager)}.{nameof(PageComponentInfo)}继承/声名，否则无法支持后续功能", this);
+                return null;
+            }
+            // 页面基础初始化
+            var result = base.AddPageLast(pageInfo);
+            // 添加选择按钮
+            AddPageIndexButton(componentPageInfo);
+            // 刷新选择按钮显示状态
+            RefreshPageIndeButtonState();
+            // 刷新总页数
+            RefreshLabelTextTotalPageCount();
+            return result;
         }
 
         public override void RemovePage(int pageIndex)
         {
             base.RemovePage(pageIndex);
-
+            
             pageButtonPool.DirectlyRelease(pageSelectButton[pageIndex].Target0.gameObject);
             pageSelectButton.RemoveAt(pageIndex);
 
             RefreshPageIndeButtonState();
         }
 
+        public override void ClearPages()
+        {
+            foreach (var pageInfo in PageInfos)
+            {
+                var page = pageInfo as PageComponentInfo;
+                pageButtonPool.DirectlyRelease(page.pageSelectableVessel.Target0.gameObject);
+            }
+            pageSelectButton.Clear();
+            base.ClearPages();
+        }
+
         /// <summary>
         /// 在页面上添加按钮
         /// </summary>
         /// <param name="pageInfo"></param>
-        private void AddPageIndexButton(PageComponentInfo pageInfo)
+        protected virtual void AddPageIndexButton(PageComponentInfo pageInfo)
         {
             var pageIndexSelectable = GetPageIndexButton();
-            pageInfo.pageIndexSelectable = pageIndexSelectable;
+            pageInfo.pageSelectableVessel = pageIndexSelectable;
+            // 将按钮对象添加到列表中便于管理
+            pageSelectButton.Add(pageIndexSelectable);
+
+            SwitchSelectableVesselType(pageIndexSelectable.Target0,
+                button =>
+                {
+                    button.onClick.AddListener(() => FlipPage(pageInfo.pageNumber));
+                }, 
+                toggle =>
+                {
+                    toggle.isOn = pageInfo.pageNumber == currentPageIndex;
+                    toggle.group = ToggleGroup;
+                    toggle.onValueChanged.AddListener(b =>
+                    {
+                        if (b) 
+                            FlipPage(pageInfo.pageNumber);
+                    });
+                });
+            RefreshPageSelectableVesselLabel(pageInfo);
         }
 
         /// <summary>
@@ -289,8 +347,14 @@ namespace XericUI.FlipPage
         /// </summary>
         private void RefreshPageIndeButtonState()
         {
-            var min = currentPageIndex - candidatesNumber / 2;
+            var min = currentPageIndex - (int)(candidatesNumber / 2);
-            var max = currentPageIndex + candidatesNumber / 2;
+
+            min = Math.Max(min, 0);
+            min = pageSelectButton.Count - candidatesNumber > 0 
+                ? Math.Min(min, (int)(pageSelectButton.Count - candidatesNumber)) 
+                : 0;
+            var max = min + (int)candidatesNumber;
+            
             for (int i = 0; i < pageSelectButton.Count; i++)
             {
                 pageSelectButton[i].Target0.transform.SetSiblingIndex(i);
@@ -299,13 +363,20 @@ namespace XericUI.FlipPage
                 if (inMaximumCandidatesNumber)
                     pageSelectButton[i].Target0.gameObject.SetActive(min <= i && i <= max);
                 else
-                    pageSelectButton[i].Target0.gameObject.SetActive(min < i && i < max);
+                    pageSelectButton[i].Target0.gameObject.SetActive(min <= i && i < max);
+                // 看不见的内容不刷新
+                if (!pageSelectButton[i].Target0.gameObject.activeSelf) 
+                    continue;
                 
                 // 更新索引
-                if (pageSelectButton[i].Target0.gameObject.activeSelf)
+                pageSelectButton[i].Target1.text = MacroRegex.RegexReplace(pageIndexFormat, i + 1);
-                {
+                    
-                    pageSelectButton[i].Target1.text = MacroRegex.RegexReplace(pageIndexFormat, i);
+                // SwitchSelectableVesselType(pageSelectButton[i].Target0,
-                }
+                //     null,
+                //     toggle =>
+                //     {
+                //         toggle.SetIsOnWithoutNotify(currentPageIndex == i);
+                //     });
             }   
         }
         
@@ -315,7 +386,18 @@ namespace XericUI.FlipPage
         private void RefreshLabelTextTotalPageCount()
         {
             if (labelTextTotalPageCount.IsValidVessel()) // 总页数更新 
-                labelTextTotalPageCount.Target.text = MacroRegex.RegexReplace(totalPageCountFormat, PageInfos.Count.ToString());
+                labelTextTotalPageCount.Target.text = 
+                    MacroRegex.RegexReplace(totalPageCountFormat, PageInfos.Count.ToString());
+        }
+        
+        /// <summary>
+        /// 刷新翻页按钮索引为当前页面索引
+        /// </summary>
+        public void RefreshPageSelectableVesselLabel(PageComponentInfo page, object customInput = null)
+        {
+            if (page.pageSelectableVessel.IsValidVessel())
+                page.pageSelectableVessel!.Target1.text = 
+                    MacroRegex.RegexReplace(pageIndexFormat, customInput ?? page.pageNumber); 
         }
 
         #endregion
@@ -345,7 +427,33 @@ namespace XericUI.FlipPage
                 });
             }
         }
-        
+
+        /// <summary>
+        /// 处理可选对象类型，如果要支持更多的类型优先改此方法，以便获得其他所有位置的编译器提示
+        /// </summary>
+        /// <param name="selectable"></param>
+        /// <param name="asButton"></param>
+        /// <param name="asToggle"></param>
+        /// <returns></returns>
+        protected static bool SwitchSelectableVesselType(Selectable selectable, Action<Button> asButton, Action<Toggle> asToggle)
+        {
+            switch (selectable)
+            {
+                case CircleSlider circleSlider: break; // asCircleSlider?.Invoke(circleSlider); break;
+                case TMP_Dropdown tmpDropdown:  break; // asTmpDropdown?.Invoke(tmpDropdown); break;
+                case TMP_InputField tmpInputField:  break; // asTmpInputField?.Invoke(tmpInputField); break;
+                case Button button: asButton?.Invoke(button); return true;
+                case Dropdown dropdown: break; // asDropdown?.Invoke(dropdown); break;
+                case InputField inputField: break; // asInputField?.Invoke(inputField); break;
+                case Scrollbar scrollbar:   break; // asScrollbar?.Invoke(scrollbar); break;
+                case Slider slider: break; // asSlider?.Invoke(slider); break;
+                case Toggle toggle: asToggle?.Invoke(toggle); return true;
+                default: break;
+            }
+            Debug.LogError($"目前不支持的可选类型:{selectable}");
+            return false;
+        }
+
         #endregion
     }
 }

Runtime/FlipPage/XericFlipPageIndexVesselBase.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Sirenix.OdinInspector;
 using UnityEngine;
 using UnityEngine.Serialization;
@@ -49,7 +50,7 @@ namespace XericUI.FlipPage
         [BoxGroup("设定")]
 #endif
         [SerializeField]
-        protected int defaultItemCountPerPage = -1;
+        private int defaultItemCountPerPage = -1;
 
         #endregion
 
@@ -91,6 +92,22 @@ namespace XericUI.FlipPage
 
             #region 生命周期
 
+            /// <summary>
+            /// 页面创建时
+            /// </summary>
+            protected internal virtual void OnPageCreated(XericFlipPageIndexVesselBase parent)
+            {
+                
+            }
+
+            /// <summary>
+            /// 页面销毁时
+            /// </summary>
+            protected internal virtual void OnPageDestroy(XericFlipPageIndexVesselBase parent)
+            {
+                
+            }
+
             /// <summary>
             /// 页面显示时
             /// </summary>
@@ -102,7 +119,7 @@ namespace XericUI.FlipPage
             /// </summary>
             /// <param name="quickVisit">快速浏览(用于区分动画和逻辑，为真时，不应当在动画事件后继续加载数据)</param>
             protected internal abstract void OnPageInvisible(bool quickVisit);
-            
+
             #endregion
             
             public override string ToString()
@@ -124,6 +141,14 @@ namespace XericUI.FlipPage
 #endif
             public string name = DateTime.Now.Ticks.ToString();
 
+            /// <summary>
+            /// 从零开始计数的项目下标
+            /// </summary>
+#if ODIN_INSPECTOR
+            [LabelText("项目索引[0, n]")]
+#endif
+            public int itemNumber { get; internal set; }
+
             #endregion
 
             #region 生命周期
@@ -159,9 +184,20 @@ namespace XericUI.FlipPage
         [SerializeField]
         protected int currentPageIndex = 0;
 
+#if UNITY_EDITOR
+        /// <summary>
+        /// 显示调试列表
+        /// </summary>
+#if ODIN_INSPECTOR
+        [ShowInInspector]
+#endif
+        private List<PageInfo> PageInfoLists => _pageInfos.ToList();
+#endif
+
         /// <summary>
         /// 所有页面
         /// </summary>
+        
         private LinkedList<PageInfo> _pageInfos = new LinkedList<PageInfo>();
 
         /// <summary>
@@ -169,11 +205,11 @@ namespace XericUI.FlipPage
         /// </summary>
         private HashSet<ItemInfo> _itemInfos = new HashSet<ItemInfo>();
 
+        
         /// <summary>
         /// 当前选中页面节点
         /// </summary>
-        public LinkedListNode<PageInfo> currentPageNode = null;
+        protected LinkedListNode<PageInfo> CurrentPageNode = null;
-
 
         /// <summary>
         /// 所有页面
@@ -183,7 +219,21 @@ namespace XericUI.FlipPage
         /// <summary>
         /// 当前选中页面内容
         /// </summary>
-        public PageInfo currentPage => currentPageNode.Value;
+        public PageInfo Currentpage => CurrentPageNode?.Value;
+
+        /// <summary>
+        /// 分布于所有页面上的所有数据项目
+        /// </summary>
+        public IEnumerable<ItemInfo> AllItemInfos => _pageInfos.SelectMany(page => page.itemInfos);
+        
+        /// <summary>
+        /// 页面默认最大项目数量
+        /// </summary>
+        protected int DefaultItemCountPerPage 
+            => defaultItemCountPerPage < 0 ? int.MaxValue : defaultItemCountPerPage;
+
+        
+        private List<ItemInfo> _backupItemInfos;
 
         #endregion
 
@@ -222,7 +272,7 @@ namespace XericUI.FlipPage
         {
             if (float.TryParse(pageNumber, out var index))
             {
-                FlipPage((int)index, forceRefresh);
+                FlipPage((int)index - 1, forceRefresh);
             }
         }
 
@@ -239,7 +289,7 @@ namespace XericUI.FlipPage
                 (pageIndex < 0 || pageIndex >= _pageInfos.Count))
                 pageIndex = Mathf.Clamp(pageIndex, 0, _pageInfos.Count - 1);
             else
-                pageIndex = MacroMath.PMod(pageIndex, _pageInfos.Count - 1);
+                pageIndex = MacroMath.PMod(pageIndex, _pageInfos.Count);
             // 检查翻页数量有效
             if (!forceRefresh && currentPageIndex == pageIndex)
                 return;
@@ -247,23 +297,23 @@ namespace XericUI.FlipPage
             var pageIndexOffset = pageIndex - currentPageIndex;
             var lastPageIndex = currentPageIndex;
             // 如果节点不存在，通过索引寻找
-            if (currentPageNode == null)
+            if (CurrentPageNode == null)
-                currentPageNode = _pageInfos.GetOrderNode().LandedIndex(currentPageIndex);
+                CurrentPageNode = _pageInfos.GetOrderNode().LandedIndex(currentPageIndex);
             // 如果索引偏移，逐个移动
             else if (pageIndexOffset > 0)
             {
                 for (var i = 0; i < pageIndexOffset; i++)
                 {
-                    var next = currentPageNode!.Next;
+                    var next = CurrentPageNode!.Next;
-                    SwitchPage(next, _pageInfos.Last, i + 1 == pageIndexOffset);
+                    SwitchPage(next, _pageInfos.Last, i + 1 < pageIndexOffset);
                 }
             }
             else if (pageIndexOffset < 0)
             {
                 for (var i = 0; i > pageIndexOffset; i--)
                 {
-                    var previa = currentPageNode!.Previous;
+                    var previa = CurrentPageNode!.Previous;
-                    SwitchPage(previa, _pageInfos.First, i - 1 == pageIndexOffset);
+                    SwitchPage(previa, _pageInfos.First, i - 1 > pageIndexOffset);
                 }
             }
             // 没有翻动有效页，退出
@@ -278,16 +328,16 @@ namespace XericUI.FlipPage
             {
                 if (newPageNode != null)
                 {
-                    currentPage.OnPageInvisible(quickPage);
+                    Currentpage.OnPageInvisible(quickPage);
-                    currentPageNode = newPageNode;
+                    CurrentPageNode = newPageNode;
-                    currentPage.OnPageVisible(quickPage);
+                    Currentpage.OnPageVisible(quickPage);
                 }
 
                 if (canPassIndexBoundary)
                 {
-                    currentPage.OnPageInvisible(quickPage);
+                    Currentpage.OnPageInvisible(quickPage);
-                    currentPageNode = defualtPageNode;
+                    CurrentPageNode = defualtPageNode;
-                    currentPage.OnPageVisible(quickPage);
+                    Currentpage.OnPageVisible(quickPage);
                 }
             }
         }
@@ -331,44 +381,49 @@ namespace XericUI.FlipPage
         /// <summary>
         /// 添加页面在开头
         /// </summary>
-        public virtual void AddPageFirst(PageInfo pageInfo)
+        public virtual PageInfo AddPageFirst(PageInfo pageInfo)
         {
             if (pageInfo == null)
             {
                 Debug.LogError($"不能添加一个空的页面内容到管理器中！", this);
-                return;
+                return null;
             }
-
-            // 添加页面
-            _pageInfos.AddFirst(pageInfo);
             // 添加页面下标
             pageInfo.pageNumber = 0;
+            // 添加页面
+            _pageInfos.AddFirst(pageInfo);
             // 更新后面页面的索引
             RefreshAllPageNumber();
+            // 执行页面生命周期
+            pageInfo.OnPageCreated(this);
             // 刷新页面
             FlipPage(currentPageIndex, true);
+            return pageInfo;
         }
 
         /// <summary>
         /// 添加页面在结尾
         /// </summary>
-        public virtual void AddPageLast(PageInfo pageInfo)
+        public virtual PageInfo AddPageLast(PageInfo pageInfo)
         {
             if (pageInfo == null)
             {
                 Debug.LogError($"不能添加一个空的页面内容到管理器中！", this);
-                return;
+                return null;
             }
             // 添加页面下标
             pageInfo.pageNumber = _pageInfos.Count;
             // 添加页面
             _pageInfos.AddLast(pageInfo);
+            // 执行页面生命周期
+            pageInfo.OnPageDestroy(this);
             // 刷新页面
             FlipPage(currentPageIndex, true);
+            return pageInfo;
         }
         
         /// <summary>
-        /// 移除页面
+        /// 移除页面（页面上的数据内容也会一同移除）
         /// </summary>
         public virtual void RemovePage(int pageIndex)
         {
@@ -388,23 +443,50 @@ namespace XericUI.FlipPage
                 tempPage.Value.pageNumber = tempPageNumber++;
             }
             // 如果移除的是当前页面，执行关闭操作
-            if (currentPageNode == page)
+            if (CurrentPageNode == page)
             {
                 page.Value.OnPageInvisible(true);
-                currentPageNode = null;
+                CurrentPageNode = null;
             }
+            // 执行页面生命周期
+            page.Value.OnPageDestroy(this);
+            // 页面索引移除
             _pageInfos.Remove(page); 
             // 刷新页面
             FlipPage(currentPageIndex, true);
         }
 
         /// <summary>
-        /// 清除所有页面
+        /// 仅移除页面，不会移除数据
         /// </summary>
-        public virtual void CleanPage()
+        /// <param name="pageIndex"></param>
+        public void RemovePageWithoutItems(int pageIndex)
+        {
+            BackupItemsFormPages();
+            RemovePage(pageIndex);
+            RestoreItemsToPages();
+        }
+        
+        /// <summary>
+        /// 获取索引下的页面
+        /// </summary>
+        /// <param name="pageIndex"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        public T IndexOfPageInfo<T>(int pageIndex)
+            where T : PageInfo
+            => _pageInfos.LandedIndex(pageIndex) as T;
+        
+        /// <summary>
+        /// 清除所有页面 (所有页面数据也会一同移除)
+        /// </summary>
+#if ODIN_INSPECTOR
+        [HorizontalGroup("数据"), Button("清除所有页面")]
+#endif
+        public virtual void ClearPages()
         {
             _pageInfos.Clear();
-            currentPageNode = null;
+            CurrentPageNode = null;
             currentPageIndex = 0;
         }
         
@@ -436,5 +518,128 @@ namespace XericUI.FlipPage
         }
         
         #endregion
+
+        #region 数据项目
+
+        /// <summary>
+        /// 添加数据项目
+        /// </summary>
+        public void AddItem(ItemInfo item, Func<PageInfo> addPage)
+        {
+            // 向前寻找空缺（这在页面都被准确填充的情况下最忧）
+            var firstVacancy = _pageInfos
+                .GetReversedOrderNode()
+                .LastOrDefault(a
+                    => a.Value.itemInfos.Count < DefaultItemCountPerPage);
+            if (firstVacancy != null)
+            {
+                firstVacancy.Value.itemInfos.Add(item);
+                return;
+            }
+            if (addPage == null)
+            {
+                Debug.LogError("当前页面已满，数据项目顺位添加到新页面中，但未指定页面创建函数，添加过程已退出", this);
+                return;
+            }
+            // 新建一个页面存放数据
+            addPage.Invoke().itemInfos.Add(item);
+        }
+
+        /// <summary>
+        /// 移除所有包含给定项目的位置（这会在页面上留下空缺）
+        /// </summary>
+        /// <param name="item"></param>
+        public void RemoveItem(ItemInfo item)
+        {
+            foreach (var a in AllItemInfos
+                         .Adjoint()
+                         .Where(a => a.obj == item)
+                         .Reverse())
+            {
+                ItemIndex2PageIndex(a.index);
+            }
+        }
+
+        public void RemoveItem(int indexItem)
+        {
+            
+        }
+
+        /// <summary>
+        /// 保留页面的状态下清空所有数据
+        /// </summary>
+#if ODIN_INSPECTOR
+        [HorizontalGroup("数据"), Button("清除所有数据")]
+#endif
+        public void ClearItemsWithoutPages()
+        {
+            foreach (var page in _pageInfos)
+            {
+                page.itemInfos.Clear();
+            }
+        }
+        
+        /// <summary>
+        /// 使用索引定位到数据
+        /// </summary>
+        /// <param name="itemIndex"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        public T IndexOfItemInfo<T>(int itemIndex)
+            where T : ItemInfo
+            => AllItemInfos.LandedIndex(itemIndex) as T;
+
+        /// <summary>
+        /// 将项目索引转为页面索引
+        /// </summary>
+        /// <param name="itemIndex"></param>
+        /// <returns></returns>
+        public virtual int ItemIndex2PageIndex(int itemIndex)
+        {
+            return itemIndex / DefaultItemCountPerPage;
+        }
+        
+        /// <summary>
+        /// 备份所有数据项目
+        /// </summary>
+        public void BackupItemsFormPages()
+        {
+            _backupItemInfos = AllItemInfos.ToList();
+        }
+
+        /// <summary>
+        /// 保存所有数据项目(强制重排操作)
+        /// </summary>
+        public void RestoreItemsToPages()
+        {
+            if (ItemIndex2PageIndex(_backupItemInfos.Count - 1) > _pageInfos.Count)
+            {
+                Debug.LogError($"重排数据时，原有数据数量({_backupItemInfos.Count})超出现有面板数量({_pageInfos.Count})，已拒绝重排", this);
+                return;
+            }
+            // 执行重拍
+            var page = _pageInfos.First;
+            page.Value.itemInfos.Clear();
+            var pageIndex = 0;
+            for (int i = 0; i < _backupItemInfos.Count; i++)
+            {
+                var newPageIndex = ItemIndex2PageIndex(i);
+                if (pageIndex != newPageIndex)
+                {
+                    pageIndex = newPageIndex;
+                    page = page.Next;
+                    if (page == null)
+                    {
+                        Debug.LogError($"重排数据时，页面链接错误，重排被迫中断", this);
+                        return;
+                    }
+                    page.Value.itemInfos.Clear();
+                }
+                page.Value.itemInfos.Add(_backupItemInfos[i]);
+            }
+        }
+
+        #endregion
+        
     }
 }