feat: remember the multi selected commit if avalible

- it is usefull for multi selection.
- like two revision compare,
    - it will keep those selection for compare while filter changed
    - and it will restore those selection if grapht fresh

Author: heartacker

src/ViewModels/Histories.cs

@@ -2,6 +2,7 @@
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Threading.Tasks;
 
 using Avalonia.Controls;
@@ -83,6 +84,12 @@ public Models.Commit SelectedCommit
             set => SetProperty(ref _selectedCommit, value);
         }
 
+        public List<Models.Commit> LastSelectedCommits
+        {
+            get => _lastSelectedCommits;
+            private set => SetProperty(ref _lastSelectedCommits, value);
+        }
+
         public long NavigationId
         {
             get => _navigationId;
@@ -252,6 +259,13 @@ public void Select(IList commits)
                 _repo.SearchCommitContext.Selected = null;
                 DetailContext = new Models.Count(commits.Count);
             }
+
+            _repo.SelectedCommits = commits.Cast<Models.Commit>().ToList();
+        }
+
+        public void MarkCommitsAsSelected(IList<Models.Commit> commits)
+        {
+            LastSelectedCommits = _commits.Where(x => commits.Any(y => y.SHA == x.SHA)).ToList();
         }
 
         public async Task<Models.Commit> GetCommitAsync(string sha)
@@ -466,6 +480,7 @@ public void CompareWithWorktree(Models.Commit commit)
         private CommitDetailSharedData _commitDetailSharedData = null;
         private bool _isLoading = true;
         private List<Models.Commit> _commits = new List<Models.Commit>();
+        private List<Models.Commit> _lastSelectedCommits = [];
         private Models.CommitGraph _graph = null;
         private Models.Commit _selectedCommit = null;
         private Models.Bisect _bisect = null;

src/ViewModels/Repository.cs

@@ -282,6 +282,12 @@ public SearchCommitContext SearchCommitContext
             get => _searchCommitContext;
         }
 
+        public List<Models.Commit> SelectedCommits
+        {
+            get => _selectCommits;
+            set => SetProperty(ref _selectCommits, value);
+        }
+
         public bool IsLocalBranchGroupExpanded
         {
             get => _uiStates.IsLocalBranchesExpandedInSideBar;
@@ -1219,6 +1225,7 @@ public void RefreshCommits()
         {
             if (_cancellationRefreshCommits is { IsCancellationRequested: false })
                 _cancellationRefreshCommits.Cancel();
+            var oldSelectedCommits = _selectCommits.ToList();
 
             _cancellationRefreshCommits = new CancellationTokenSource();
             var token = _cancellationRefreshCommits.Token;
@@ -1248,6 +1255,8 @@ public void RefreshCommits()
 
                         BisectState = _histories.UpdateBisectInfo();
 
+                        _histories.MarkCommitsAsSelected(oldSelectedCommits);
+
                         if (!string.IsNullOrEmpty(_navigateToCommitDelayed))
                             NavigateToCommit(_navigateToCommitDelayed);
                     }
@@ -1957,6 +1966,7 @@ private async Task AutoFetchOnUIThread()
 
         private bool _isSearchingCommits = false;
         private SearchCommitContext _searchCommitContext = null;
+        private List<Models.Commit> _selectCommits = new List<Models.Commit>();
 
         private string _filter = string.Empty;
         private List<Models.Remote> _remotes = [];

src/Views/Histories.axaml.cs

@@ -123,6 +123,15 @@ public long NavigationId
             set => SetValue(NavigationIdProperty, value);
         }
 
+        public static readonly StyledProperty<List<Models.Commit>> LastSelectedCommitsProperty =
+            AvaloniaProperty.Register<Histories, List<Models.Commit>>(nameof(LastSelectedCommits));
+
+        public List<Models.Commit> LastSelectedCommits
+        {
+            get => GetValue(LastSelectedCommitsProperty);
+            set => SetValue(LastSelectedCommitsProperty, value);
+        }
+
         public static readonly StyledProperty<bool> IsScrollToTopVisibleProperty =
             AvaloniaProperty.Register<Histories, bool>(nameof(IsScrollToTopVisible));
 
@@ -146,6 +155,18 @@ protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs chang
                 if (CommitListContainer is { SelectedItems.Count: 1, IsLoaded: true } dataGrid)
                     dataGrid.ScrollIntoView(dataGrid.SelectedItem, null);
             }
+            if (change.Property == LastSelectedCommitsProperty)
+            {
+                if (LastSelectedCommits?.Count > 1 &&
+                    (CommitListContainer is DataGrid { IsLoaded: true } dataGrid))
+                {
+                    foreach (var c in LastSelectedCommits)
+                    {
+                        dataGrid.SelectedItems.Add(c);
+                    }
+                }
+            }
+
         }
 
         private void OnCommitListLoaded(object sender, RoutedEventArgs e)

src/Views/Repository.axaml

@@ -424,7 +424,7 @@
                 <Setter Property="CornerRadius" Value="4"/>
               </Style>
             </ListBox.Styles>
-            <ListBox.ItemTemplate>              
+            <ListBox.ItemTemplate>
               <DataTemplate DataType="vm:Worktree">
                 <Border Height="24"
                         Background="Transparent"
@@ -450,7 +450,7 @@
                         <TextBlock Grid.Row="0" Grid.Column="3"
                                    Margin="6,0,0,0"
                                    Text="{Binding Branch, Mode=OneWay}"/>
-                        
+
                         <TextBlock Grid.Row="1" Grid.Column="0"
                                    Classes="info_label"
                                    HorizontalAlignment="Left" VerticalAlignment="Center"
@@ -926,6 +926,7 @@
                          Bisect="{Binding Bisect}"
                          IssueTrackers="{Binding $parent[v:Repository].((vm:Repository)DataContext).IssueTrackers}"
                          OnlyHighlightCurrentBranch="{Binding $parent[v:Repository].((vm:Repository)DataContext).OnlyHighlightCurrentBranchInHistory}"
+                         LastSelectedCommits="{Binding LastSelectedCommits}"
                          NavigationId="{Binding NavigationId}"/>
           </DataTemplate>