refine #1334

src/Snap.Hutao/Snap.Hutao/Control/Collection/AdvancedCollectionView/AdvancedCollectionView.Defer.cs

@@ -0,0 +1,54 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+namespace Snap.Hutao.Control.Collection.AdvancedCollectionView;
+
+/// <summary>
+/// A collection view implementation that supports filtering, grouping, sorting and incremental loading
+/// </summary>
+internal partial class AdvancedCollectionView
+{
+    /// <summary>
+    /// Stops refreshing until it is disposed
+    /// </summary>
+    /// <returns>An disposable object</returns>
+    public IDisposable DeferRefresh()
+    {
+        return new NotificationDeferrer(this);
+    }
+
+    /// <summary>
+    /// Notification deferrer helper class
+    /// </summary>
+#pragma warning disable CA1063 // Implement IDisposable Correctly
+    public class NotificationDeferrer : IDisposable
+#pragma warning restore CA1063 // Implement IDisposable Correctly
+    {
+        private readonly AdvancedCollectionView _acvs;
+        private readonly object _currentItem;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NotificationDeferrer"/> class.
+        /// </summary>
+        /// <param name="acvs">Source ACVS</param>
+        public NotificationDeferrer(AdvancedCollectionView acvs)
+        {
+            _acvs = acvs;
+            _currentItem = _acvs.CurrentItem;
+            _acvs._deferCounter++;
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        /// <filterpriority>2</filterpriority>
+#pragma warning disable CA1063 // Implement IDisposable Correctly
+        public void Dispose()
+#pragma warning restore CA1063 // Implement IDisposable Correctly
+        {
+            _acvs.MoveCurrentTo(_currentItem);
+            _acvs._deferCounter--;
+            _acvs.Refresh();
+        }
+    }
+}

src/Snap.Hutao/Snap.Hutao/Control/Collection/AdvancedCollectionView/AdvancedCollectionView.Events.cs

@@ -0,0 +1,61 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using Microsoft.UI.Xaml.Data;
+using Windows.Foundation.Collections;
+
+namespace Snap.Hutao.Control.Collection.AdvancedCollectionView;
+
+/// <summary>
+/// A collection view implementation that supports filtering, grouping, sorting and incremental loading
+/// </summary>
+internal partial class AdvancedCollectionView
+{
+    /// <summary>
+    /// Currently selected item changing event
+    /// </summary>
+    /// <param name="e">event args</param>
+    private void OnCurrentChanging(CurrentChangingEventArgs e)
+    {
+        if (_deferCounter > 0)
+        {
+            return;
+        }
+
+        CurrentChanging?.Invoke(this, e);
+    }
+
+    /// <summary>
+    /// Currently selected item changed event
+    /// </summary>
+    /// <param name="e">event args</param>
+    private void OnCurrentChanged(object e)
+    {
+        if (_deferCounter > 0)
+        {
+            return;
+        }
+
+        CurrentChanged?.Invoke(this, e);
+
+        // ReSharper disable once ExplicitCallerInfoArgument
+        OnPropertyChanged(nameof(CurrentItem));
+    }
+
+    /// <summary>
+    /// Vector changed event
+    /// </summary>
+    /// <param name="e">event args</param>
+    private void OnVectorChanged(IVectorChangedEventArgs e)
+    {
+        if (_deferCounter > 0)
+        {
+            return;
+        }
+
+        VectorChanged?.Invoke(this, e);
+
+        // ReSharper disable once ExplicitCallerInfoArgument
+        OnPropertyChanged(nameof(Count));
+    }
+}

src/Snap.Hutao/Snap.Hutao/Control/Collection/AdvancedCollectionView/AdvancedCollectionView.cs

@@ -0,0 +1,816 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using System.Collections;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using CommunityToolkit.WinUI.Collections;
+using CommunityToolkit.WinUI.Helpers;
+using Microsoft.UI.Xaml.Data;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+using NotifyCollectionChangedAction = global::System.Collections.Specialized.NotifyCollectionChangedAction;
+
+namespace Snap.Hutao.Control.Collection.AdvancedCollectionView;
+
+/// <summary>
+/// A collection view implementation that supports filtering, sorting and incremental loading
+/// https://github.com/CommunityToolkit/Windows/pull/309
+/// </summary>
+internal partial class AdvancedCollectionView : IAdvancedCollectionView, INotifyPropertyChanged, ISupportIncrementalLoading, IComparer<object>
+{
+    private readonly List<object> _view;
+
+    private readonly ObservableCollection<SortDescription> _sortDescriptions;
+
+    private readonly Dictionary<string, PropertyInfo> _sortProperties;
+
+    private readonly bool _liveShapingEnabled;
+
+    private readonly HashSet<string> _observedFilterProperties = new HashSet<string>();
+
+    private IList _source;
+
+    private Predicate<object> _filter;
+    private int _deferCounter;
+
+    private WeakEventListener<AdvancedCollectionView, object, NotifyCollectionChangedEventArgs> _sourceWeakEventListener;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="AdvancedCollectionView"/> class.
+    /// </summary>
+    public AdvancedCollectionView()
+        : this(new List<object>(0))
+    {
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="AdvancedCollectionView"/> class.
+    /// </summary>
+    /// <param name="source">source IEnumerable</param>
+    /// <param name="isLiveShaping">Denotes whether or not this ACV should re-filter/re-sort if a PropertyChanged is raised for an observed property.</param>
+#pragma warning disable CS8767
+#pragma warning disable CS8769
+#pragma warning disable CS8622
+#pragma warning disable CS8600
+#pragma warning disable CS8601
+#pragma warning disable CS8604
+#pragma warning disable CS8603 // Possible null reference return.
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+    public AdvancedCollectionView(IList source, bool isLiveShaping = false)
+    {
+        _liveShapingEnabled = isLiveShaping;
+        _view = new List<object>();
+        _sortDescriptions = new ObservableCollection<SortDescription>();
+        _sortDescriptions.CollectionChanged += SortDescriptions_CollectionChanged;
+        _sortProperties = new Dictionary<string, PropertyInfo>();
+        Source = source;
+    }
+
+    /// <summary>
+    /// Gets or sets the source
+    /// </summary>
+    public IList Source
+    {
+        get
+        {
+            return _source;
+        }
+
+        set
+        {
+            // ReSharper disable once PossibleUnintendedReferenceComparison
+            if (_source == value)
+            {
+                return;
+            }
+
+            if (_source != null)
+            {
+                DetachPropertyChangedHandler(_source);
+            }
+
+            _source = value;
+            AttachPropertyChangedHandler(_source);
+
+            _sourceWeakEventListener?.Detach();
+
+            if (_source is INotifyCollectionChanged sourceNcc)
+            {
+                _sourceWeakEventListener =
+                    new WeakEventListener<AdvancedCollectionView, object, NotifyCollectionChangedEventArgs>(this)
+                    {
+                        // Call the actual collection changed event
+                        OnEventAction = (source, changed, arg3) => SourceNcc_CollectionChanged(source, arg3),
+
+                        // The source doesn't exist anymore
+                        OnDetachAction = (listener) => sourceNcc.CollectionChanged -= _sourceWeakEventListener!.OnEvent
+                    };
+                sourceNcc.CollectionChanged += _sourceWeakEventListener.OnEvent;
+            }
+
+            HandleSourceChanged();
+            OnPropertyChanged();
+        }
+    }
+
+    /// <summary>
+    /// Manually refresh the view
+    /// </summary>
+    public void Refresh()
+    {
+        HandleSourceChanged();
+    }
+
+    /// <inheritdoc/>
+    public void RefreshFilter()
+    {
+        HandleFilterChanged();
+    }
+
+    /// <inheritdoc/>
+    public void RefreshSorting()
+    {
+        HandleSortChanged();
+    }
+
+    /// <inheritdoc />
+    public IEnumerator<object> GetEnumerator() => _view.GetEnumerator();
+
+    /// <inheritdoc />
+    IEnumerator IEnumerable.GetEnumerator() => _view.GetEnumerator();
+
+    /// <inheritdoc />
+    public void Add(object item)
+    {
+        if (IsReadOnly)
+        {
+            throw new NotSupportedException("Collection is read-only.");
+        }
+
+        _source.Add(item);
+    }
+
+    /// <inheritdoc />
+    public void Clear()
+    {
+        if (IsReadOnly)
+        {
+            throw new NotSupportedException("Collection is read-only.");
+        }
+
+        _source.Clear();
+    }
+
+    /// <inheritdoc />
+    public bool Contains(object item) => _view.Contains(item);
+
+    /// <inheritdoc />
+    public void CopyTo(object[] array, int arrayIndex) => _view.CopyTo(array, arrayIndex);
+
+    /// <inheritdoc />
+    public bool Remove(object item)
+    {
+        if (IsReadOnly)
+        {
+            throw new NotSupportedException("Collection is read-only.");
+        }
+
+        _source.Remove(item);
+        return true;
+    }
+
+    /// <inheritdoc />
+    public int Count => _view.Count;
+
+    /// <inheritdoc />
+    public bool IsReadOnly => _source == null || _source.IsReadOnly;
+
+    /// <inheritdoc />
+    public int IndexOf(object item) => _view.IndexOf(item);
+
+    /// <inheritdoc />
+    public void Insert(int index, object item)
+    {
+        if (IsReadOnly)
+        {
+            throw new NotSupportedException("Collection is read-only.");
+        }
+
+        _source.Insert(index, item);
+    }
+
+    /// <summary>
+    /// Removes the <see cref="T:System.Collections.Generic.IList`1"/> item at the specified index.
+    /// </summary>
+    /// <param name="index">The zero-based index of the item to remove.</param><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="index"/> is not a valid index in the <see cref="T:System.Collections.Generic.IList`1"/>.</exception><exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.IList`1"/> is read-only.</exception>
+    public void RemoveAt(int index) => Remove(_view[index]);
+
+    /// <summary>
+    /// Gets or sets the element at the specified index.
+    /// </summary>
+    /// <returns>
+    /// The element at the specified index.
+    /// </returns>
+    /// <param name="index">The zero-based index of the element to get or set.</param><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="index"/> is not a valid index in the <see cref="T:System.Collections.Generic.IList`1"/>.</exception><exception cref="T:System.NotSupportedException">The property is set and the <see cref="T:System.Collections.Generic.IList`1"/> is read-only.</exception>
+    public object this[int index]
+    {
+        get { return _view[index]; }
+        set { _view[index] = value; }
+    }
+
+    /// <summary>
+    /// Occurs when the vector changes.
+    /// </summary>
+    public event Windows.Foundation.Collections.VectorChangedEventHandler<object> VectorChanged;
+
+    /// <summary>
+    /// Move current index to item
+    /// </summary>
+    /// <param name="item">item</param>
+    /// <returns>success of operation</returns>
+    public bool MoveCurrentTo(object item) => item == CurrentItem || MoveCurrentToIndex(IndexOf(item));
+
+    /// <summary>
+    /// Moves selected item to position
+    /// </summary>
+    /// <param name="index">index</param>
+    /// <returns>success of operation</returns>
+    public bool MoveCurrentToPosition(int index) => MoveCurrentToIndex(index);
+
+    /// <summary>
+    /// Move current item to first item
+    /// </summary>
+    /// <returns>success of operation</returns>
+    public bool MoveCurrentToFirst() => MoveCurrentToIndex(0);
+
+    /// <summary>
+    /// Move current item to last item
+    /// </summary>
+    /// <returns>success of operation</returns>
+    public bool MoveCurrentToLast() => MoveCurrentToIndex(_view.Count - 1);
+
+    /// <summary>
+    /// Move current item to next item
+    /// </summary>
+    /// <returns>success of operation</returns>
+    public bool MoveCurrentToNext() => MoveCurrentToIndex(CurrentPosition + 1);
+
+    /// <summary>
+    /// Move current item to previous item
+    /// </summary>
+    /// <returns>success of operation</returns>
+    public bool MoveCurrentToPrevious() => MoveCurrentToIndex(CurrentPosition - 1);
+
+    /// <summary>
+    /// Load more items from the source
+    /// </summary>
+    /// <param name="count">number of items to load</param>
+    /// <returns>Async operation of LoadMoreItemsResult</returns>
+    /// <exception cref="NotImplementedException">Not implemented yet...</exception>
+    public IAsyncOperation<LoadMoreItemsResult> LoadMoreItemsAsync(uint count)
+    {
+        var sil = _source as ISupportIncrementalLoading;
+        return sil?.LoadMoreItemsAsync(count);
+    }
+
+    /// <summary>
+    /// Gets the groups in collection
+    /// </summary>
+    public IObservableVector<object> CollectionGroups => null;
+
+    /// <summary>
+    /// Gets or sets the current item
+    /// </summary>
+    public object CurrentItem
+    {
+
+        get { return CurrentPosition > -1 && CurrentPosition < _view.Count ? _view[CurrentPosition] : null; }
+#pragma warning restore CS8603 // Possible null reference return.
+        set { MoveCurrentTo(value); }
+    }
+
+    /// <summary>
+    /// Gets the position of current item
+    /// </summary>
+    public int CurrentPosition { get; private set; }
+
+    /// <summary>
+    /// Gets a value indicating whether the source has more items
+    /// </summary>
+    public bool HasMoreItems => (_source as ISupportIncrementalLoading)?.HasMoreItems ?? false;
+
+    /// <summary>
+    /// Gets a value indicating whether the current item is after the last visible item
+    /// </summary>
+    public bool IsCurrentAfterLast => CurrentPosition >= _view.Count;
+
+    /// <summary>
+    /// Gets a value indicating whether the current item is before the first visible item
+    /// </summary>
+    public bool IsCurrentBeforeFirst => CurrentPosition < 0;
+
+    /// <summary>
+    /// Current item changed event handler
+    /// </summary>
+    public event EventHandler<object> CurrentChanged;
+
+    /// <summary>
+    /// Current item changing event handler
+    /// </summary>
+    public event CurrentChangingEventHandler CurrentChanging;
+
+    /// <summary>
+    /// Gets a value indicating whether this CollectionView can filter its items
+    /// </summary>
+    public bool CanFilter => true;
+
+    /// <summary>
+    /// Gets or sets the predicate used to filter the visible items
+    /// </summary>
+    public Predicate<object> Filter
+    {
+        get
+        {
+            return _filter;
+        }
+
+        set
+        {
+            if (_filter == value)
+            {
+                return;
+            }
+
+            _filter = value;
+            HandleFilterChanged();
+        }
+    }
+
+    /// <summary>
+    /// Gets a value indicating whether this CollectionView can sort its items
+    /// </summary>
+    public bool CanSort => true;
+
+    /// <summary>
+    /// Gets SortDescriptions to sort the visible items
+    /// </summary>
+    public IList<SortDescription> SortDescriptions => _sortDescriptions;
+
+    /*
+    /// <summary>
+    /// Gets a value indicating whether this CollectionView can group its items
+    /// </summary>
+    public bool CanGroup => false;
+
+    /// <summary>
+    /// Gets GroupDescriptions to group the visible items
+    /// </summary>
+    public IList<object> GroupDescriptions => null;
+    */
+
+    /// <summary>
+    /// Gets the source collection
+    /// </summary>
+    public IEnumerable SourceCollection => _source;
+
+    /// <summary>
+    /// IComparer implementation
+    /// </summary>
+    /// <param name="x">Object A</param>
+    /// <param name="y">Object B</param>
+    /// <returns>Comparison value</returns>
+#pragma warning disable CA1033 // Interface methods should be callable by child types
+    int IComparer<object>.Compare(object x, object y)
+#pragma warning restore CA1033 // Interface methods should be callable by child types
+    {
+        if (!_sortProperties.Any())
+        {
+            var listType = _source?.GetType();
+            Type type;
+
+            if (listType != null && listType.IsGenericType)
+            {
+                type = listType.GetGenericArguments()[0];
+            }
+            else
+            {
+                type = x.GetType();
+            }
+
+            foreach (var sd in _sortDescriptions)
+            {
+                if (!string.IsNullOrEmpty(sd.PropertyName))
+                {
+                    _sortProperties[sd.PropertyName] = type.GetProperty(sd.PropertyName);
+                }
+            }
+        }
+
+        foreach (var sd in _sortDescriptions)
+        {
+            object cx, cy;
+
+            if (string.IsNullOrEmpty(sd.PropertyName))
+            {
+                cx = x;
+                cy = y;
+            }
+            else
+            {
+                var pi = _sortProperties[sd.PropertyName];
+
+                cx = pi.GetValue(x!);
+                cy = pi.GetValue(y!);
+            }
+
+            var cmp = sd.Comparer.Compare(cx, cy);
+
+            if (cmp != 0)
+            {
+                return sd.Direction == SortDirection.Ascending ? +cmp : -cmp;
+            }
+        }
+
+        return 0;
+    }
+
+    /// <summary>
+    /// Occurs when a property value changes.
+    /// </summary>
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    /// <summary>
+    /// Property changed event invoker
+    /// </summary>
+    /// <param name="propertyName">name of the property that changed</param>
+    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null!)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+
+    /// <inheritdoc/>
+    public void ObserveFilterProperty(string propertyName)
+    {
+        _observedFilterProperties.Add(propertyName);
+    }
+
+    /// <inheritdoc/>
+    public void ClearObservedFilterProperties()
+    {
+        _observedFilterProperties.Clear();
+    }
+
+    private void ItemOnPropertyChanged(object item, PropertyChangedEventArgs e)
+    {
+        if (!_liveShapingEnabled)
+        {
+            return;
+        }
+
+        var filterResult = _filter?.Invoke(item);
+
+        if (filterResult.HasValue && _observedFilterProperties.Contains(e.PropertyName))
+        {
+            var viewIndex = _view.IndexOf(item);
+            if (viewIndex != -1 && !filterResult.Value)
+            {
+                RemoveFromView(viewIndex, item);
+            }
+            else if (viewIndex == -1 && filterResult.Value)
+            {
+                var index = _source.IndexOf(item);
+                HandleItemAdded(index, item);
+            }
+        }
+
+        if ((filterResult ?? true) && SortDescriptions.Any(sd => sd.PropertyName == e.PropertyName))
+        {
+            var oldIndex = _view.IndexOf(item);
+
+            // Check if item is in view:
+            if (oldIndex < 0)
+            {
+                return;
+            }
+
+            _view.RemoveAt(oldIndex);
+            var targetIndex = _view.BinarySearch(item, this);
+            if (targetIndex < 0)
+            {
+                targetIndex = ~targetIndex;
+            }
+
+            // Only trigger expensive UI updates if the index really changed:
+            if (targetIndex != oldIndex)
+            {
+                OnVectorChanged(new VectorChangedEventArgs(CollectionChange.ItemRemoved, oldIndex, item));
+
+                _view.Insert(targetIndex, item);
+
+                OnVectorChanged(new VectorChangedEventArgs(CollectionChange.ItemInserted, targetIndex, item));
+            }
+            else
+            {
+                _view.Insert(targetIndex, item);
+            }
+        }
+        else if (string.IsNullOrEmpty(e.PropertyName))
+        {
+            HandleSourceChanged();
+        }
+    }
+
+    private void AttachPropertyChangedHandler(IEnumerable items)
+    {
+        if (!_liveShapingEnabled || items == null)
+        {
+            return;
+        }
+
+        foreach (var item in items.OfType<INotifyPropertyChanged>())
+        {
+            item.PropertyChanged += ItemOnPropertyChanged;
+        }
+    }
+
+    private void DetachPropertyChangedHandler(IEnumerable items)
+    {
+        if (!_liveShapingEnabled || items == null)
+        {
+            return;
+        }
+
+        foreach (var item in items.OfType<INotifyPropertyChanged>())
+        {
+            item.PropertyChanged -= ItemOnPropertyChanged;
+        }
+    }
+
+    private void HandleSortChanged()
+    {
+        _sortProperties.Clear();
+        _view.Sort(this);
+        _sortProperties.Clear();
+        OnVectorChanged(new VectorChangedEventArgs(CollectionChange.Reset));
+    }
+
+    private void HandleFilterChanged()
+    {
+        if (_filter != null)
+        {
+            for (var index = 0; index < _view.Count; index++)
+            {
+                var item = _view.ElementAt(index);
+                if (_filter(item))
+                {
+                    continue;
+                }
+
+                RemoveFromView(index, item);
+                index--;
+            }
+        }
+
+        var viewHash = new HashSet<object>(_view);
+        var viewIndex = 0;
+        for (var index = 0; index < _source.Count; index++)
+        {
+            var item = _source[index];
+            if (viewHash.Contains(item))
+            {
+                viewIndex++;
+                continue;
+            }
+
+            if (HandleItemAdded(index, item, viewIndex))
+            {
+                viewIndex++;
+            }
+        }
+    }
+
+    private void HandleSourceChanged()
+    {
+        _sortProperties.Clear();
+        var currentItem = CurrentItem;
+        _view.Clear();
+        foreach (var item in Source)
+        {
+            if (_filter != null && !_filter(item))
+            {
+                continue;
+            }
+
+            if (_sortDescriptions.Any())
+            {
+                var targetIndex = _view.BinarySearch(item, this);
+                if (targetIndex < 0)
+                {
+                    targetIndex = ~targetIndex;
+                }
+
+                _view.Insert(targetIndex, item);
+            }
+            else
+            {
+                _view.Add(item);
+            }
+        }
+
+        _sortProperties.Clear();
+        OnVectorChanged(new VectorChangedEventArgs(CollectionChange.Reset));
+        MoveCurrentTo(currentItem);
+    }
+
+    private void SourceNcc_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+    {
+        // ReSharper disable once SwitchStatementMissingSomeCases
+        switch (e.Action)
+        {
+            case NotifyCollectionChangedAction.Add:
+                AttachPropertyChangedHandler(e.NewItems);
+                if (_deferCounter <= 0)
+                {
+                    if (e.NewItems?.Count == 1)
+                    {
+                        HandleItemAdded(e.NewStartingIndex, e.NewItems[0]);
+                    }
+                    else
+                    {
+                        HandleSourceChanged();
+                    }
+                }
+
+                break;
+            case NotifyCollectionChangedAction.Remove:
+                DetachPropertyChangedHandler(e.OldItems);
+                if (_deferCounter <= 0)
+                {
+                    if (e.OldItems?.Count == 1)
+                    {
+                        HandleItemRemoved(e.OldStartingIndex, e.OldItems[0]);
+                    }
+                    else
+                    {
+                        HandleSourceChanged();
+                    }
+                }
+
+                break;
+            case NotifyCollectionChangedAction.Move:
+            case NotifyCollectionChangedAction.Replace:
+            case NotifyCollectionChangedAction.Reset:
+                if (_deferCounter <= 0)
+                {
+                    HandleSourceChanged();
+                }
+
+                break;
+        }
+    }
+
+    private bool HandleItemAdded(int newStartingIndex, object newItem, int? viewIndex = null)
+    {
+        if (_filter != null && !_filter(newItem))
+        {
+            return false;
+        }
+
+        var newViewIndex = _view.Count;
+
+        if (_sortDescriptions.Any())
+        {
+            _sortProperties.Clear();
+            newViewIndex = _view.BinarySearch(newItem, this);
+            if (newViewIndex < 0)
+            {
+                newViewIndex = ~newViewIndex;
+            }
+        }
+        else if (_filter != null)
+        {
+            if (_source == null)
+            {
+                HandleSourceChanged();
+                return false;
+            }
+
+            if (newStartingIndex == 0 || _view.Count == 0)
+            {
+                newViewIndex = 0;
+            }
+            else if (newStartingIndex == _source.Count - 1)
+            {
+                newViewIndex = _view.Count;
+            }
+            else if (viewIndex.HasValue)
+            {
+                newViewIndex = viewIndex.Value;
+            }
+            else
+            {
+                for (int i = 0, j = 0; i < _source.Count; i++)
+                {
+                    if (i == newStartingIndex)
+                    {
+                        newViewIndex = j;
+                        break;
+                    }
+
+                    if (_view[j] == _source[i])
+                    {
+                        j++;
+                    }
+                }
+            }
+        }
+
+        _view.Insert(newViewIndex, newItem);
+        if (newViewIndex <= CurrentPosition)
+        {
+            CurrentPosition++;
+        }
+
+        var e = new VectorChangedEventArgs(CollectionChange.ItemInserted, newViewIndex, newItem);
+        OnVectorChanged(e);
+        return true;
+    }
+
+    private void HandleItemRemoved(int oldStartingIndex, object oldItem)
+    {
+        if (_filter != null && !_filter(oldItem))
+        {
+            return;
+        }
+
+        if (oldStartingIndex < 0 || oldStartingIndex >= _view.Count || !Equals(_view[oldStartingIndex], oldItem))
+        {
+            oldStartingIndex = _view.IndexOf(oldItem);
+        }
+
+        if (oldStartingIndex < 0)
+        {
+            return;
+        }
+
+        RemoveFromView(oldStartingIndex, oldItem);
+    }
+
+    private void RemoveFromView(int itemIndex, object item)
+    {
+        _view.RemoveAt(itemIndex);
+        if (itemIndex <= CurrentPosition)
+        {
+            CurrentPosition--;
+        }
+
+        var e = new VectorChangedEventArgs(CollectionChange.ItemRemoved, itemIndex, item);
+        OnVectorChanged(e);
+    }
+
+    private void SortDescriptions_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+    {
+        if (_deferCounter > 0)
+        {
+            return;
+        }
+
+        HandleSortChanged();
+    }
+
+    private bool MoveCurrentToIndex(int i)
+    {
+        if (i < -1 || i >= _view.Count)
+        {
+            return false;
+        }
+
+        if (i == CurrentPosition)
+        {
+            return false;
+        }
+
+        var e = new CurrentChangingEventArgs();
+        OnCurrentChanging(e);
+        if (e.Cancel)
+        {
+            return false;
+        }
+
+        CurrentPosition = i;
+        OnCurrentChanged(null!);
+        return true;
+    }
+}
+
+#pragma warning restore CS8767
+#pragma warning restore CS8769
+#pragma warning restore CS8622
+#pragma warning restore CS8601
+#pragma warning restore CS8600
+#pragma warning restore CS8604
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+#pragma warning restore CS8603 // Possible null reference return.

src/Snap.Hutao/Snap.Hutao/Control/Collection/AdvancedCollectionView/VectorChangedEventArgs.cs

@@ -0,0 +1,40 @@
+// Copyright (c) DGP Studio. All rights reserved.
+// Licensed under the MIT license.
+
+using Windows.Foundation.Collections;
+
+namespace Snap.Hutao.Control.Collection.AdvancedCollectionView;
+
+/// <summary>
+/// Vector changed EventArgs
+/// </summary>
+internal class VectorChangedEventArgs : IVectorChangedEventArgs
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="VectorChangedEventArgs"/> class.
+    /// </summary>
+    /// <param name="cc">collection change type</param>
+    /// <param name="index">index of item changed</param>
+    /// <param name="item">item changed</param>
+    public VectorChangedEventArgs(CollectionChange cc, int index = -1, object item = null!)
+    {
+        CollectionChange = cc;
+        Index = (uint)index;
+    }
+
+    /// <summary>
+    /// Gets the type of change that occurred in the vector.
+    /// </summary>
+    /// <returns>
+    /// The type of change in the vector.
+    /// </returns>
+    public CollectionChange CollectionChange { get; }
+
+    /// <summary>
+    /// Gets the position where the change occurred in the vector.
+    /// </summary>
+    /// <returns>
+    /// The zero-based position where the change occurred in the vector, if applicable.
+    /// </returns>
+    public uint Index { get; }
+}

src/Snap.Hutao/Snap.Hutao/ViewModel/Achievement/AchievementViewModel.cs

@@ -1,8 +1,8 @@
 // Copyright (c) DGP Studio. All rights reserved.
 // Licensed under the MIT license.
 
-using CommunityToolkit.WinUI.Collections;
 using Microsoft.UI.Xaml.Controls;
+using Snap.Hutao.Control.Collection.AdvancedCollectionView;
 using Snap.Hutao.Core.IO;
 using Snap.Hutao.Core.LifeCycle;
 using Snap.Hutao.Factory.ContentDialog;
@@ -18,6 +18,8 @@ using System.Text.RegularExpressions;
 using EntityAchievementArchive = Snap.Hutao.Model.Entity.AchievementArchive;
 using MetadataAchievement = Snap.Hutao.Model.Metadata.Achievement.Achievement;
 using MetadataAchievementGoal = Snap.Hutao.Model.Metadata.Achievement.AchievementGoal;
+using SortDescription = CommunityToolkit.WinUI.Collections.SortDescription;
+using SortDirection = CommunityToolkit.WinUI.Collections.SortDirection;
 
 namespace Snap.Hutao.ViewModel.Achievement;
 

src/Snap.Hutao/Snap.Hutao/ViewModel/Game/LaunchGameViewModel.cs

@@ -1,9 +1,9 @@
 // Copyright (c) DGP Studio. All rights reserved.
 // Licensed under the MIT license.
 
-using CommunityToolkit.WinUI.Collections;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.UI.Windowing;
+using Snap.Hutao.Control.Collection.AdvancedCollectionView;
 using Snap.Hutao.Core;
 using Snap.Hutao.Core.Database;
 using Snap.Hutao.Core.Diagnostics.CodeAnalysis;
@@ -241,8 +241,6 @@ internal sealed partial class LaunchGameViewModel : Abstraction.ViewModel, IView
             {
                 await taskContext.SwitchToMainThreadAsync();
                 SelectedGameAccount = account;
-
-                await UpdateGameAccountsViewAsync().ConfigureAwait(false);
             }
         }
         catch (UserdataCorruptedException ex)
@@ -328,6 +326,18 @@ internal sealed partial class LaunchGameViewModel : Abstraction.ViewModel, IView
                 GameResource = response.Data;
             }
         }
+
+        async ValueTask UpdateGameAccountsViewAsync()
+        {
+            gameAccountFilter = new(SelectedScheme?.GetSchemeType());
+            ObservableReorderableDbCollection<GameAccount> accounts = gameService.GameAccountCollection;
+
+            await taskContext.SwitchToMainThreadAsync();
+            GameAccountsView = new(accounts, true)
+            {
+                Filter = gameAccountFilter.Filter,
+            };
+        }
     }
 
     [Command("IdentifyMonitorsCommand")]
@@ -353,16 +363,4 @@ internal sealed partial class LaunchGameViewModel : Abstraction.ViewModel, IView
             window.Close();
         }
     }
-
-    private async ValueTask UpdateGameAccountsViewAsync()
-    {
-        gameAccountFilter = new(SelectedScheme?.GetSchemeType());
-        ObservableReorderableDbCollection<GameAccount> accounts = gameService.GameAccountCollection;
-
-        await taskContext.SwitchToMainThreadAsync();
-        GameAccountsView = new(accounts, true)
-        {
-            Filter = gameAccountFilter.Filter,
-        };
-    }
 }

src/Snap.Hutao/Snap.Hutao/ViewModel/Game/LaunchGameViewModelSlim.cs

@@ -1,7 +1,7 @@
 // Copyright (c) DGP Studio. All rights reserved.
 // Licensed under the MIT license.
 
-using CommunityToolkit.WinUI.Collections;
+using Snap.Hutao.Control.Collection.AdvancedCollectionView;
 using Snap.Hutao.Core.ExceptionService;
 using Snap.Hutao.Model.Entity;
 using Snap.Hutao.Service.Game;

src/Snap.Hutao/Snap.Hutao/ViewModel/Wiki/WikiAvatarViewModel.cs

@@ -1,7 +1,7 @@
 // Copyright (c) DGP Studio. All rights reserved.
 // Licensed under the MIT license.
 
-using CommunityToolkit.WinUI.Collections;
+using Snap.Hutao.Control.Collection.AdvancedCollectionView;
 using Snap.Hutao.Factory.ContentDialog;
 using Snap.Hutao.Model.Calculable;
 using Snap.Hutao.Model.Entity.Primitive;

src/Snap.Hutao/Snap.Hutao/ViewModel/Wiki/WikiMonsterViewModel.cs

@@ -1,7 +1,7 @@
 // Copyright (c) DGP Studio. All rights reserved.
 // Licensed under the MIT license.
 
-using CommunityToolkit.WinUI.Collections;
+using Snap.Hutao.Control.Collection.AdvancedCollectionView;
 using Snap.Hutao.Model.Intrinsic;
 using Snap.Hutao.Model.Metadata.Item;
 using Snap.Hutao.Model.Metadata.Monster;

src/Snap.Hutao/Snap.Hutao/ViewModel/Wiki/WikiWeaponViewModel.cs

@@ -1,7 +1,7 @@
 // Copyright (c) DGP Studio. All rights reserved.
 // Licensed under the MIT license.
 
-using CommunityToolkit.WinUI.Collections;
+using Snap.Hutao.Control.Collection.AdvancedCollectionView;
 using Snap.Hutao.Factory.ContentDialog;
 using Snap.Hutao.Model.Calculable;
 using Snap.Hutao.Model.Entity.Primitive;