In Local Changes, added filter-box in Staged area, to match Unstaged area (#1153)

Also added minimal handling (RaiseException) if trying to commit with active filter (might commit more changes than visible, so disallow).
Minor unification in unstageChanges() to make it more similar to StageChanges().

src/ViewModels/WorkingCopy.cs

@@ -109,12 +109,28 @@ namespace SourceGit.ViewModels
                     if (_isLoadingData)
                         return;
 
-                    VisibleUnstaged = GetVisibleUnstagedChanges(_unstaged);
+                    VisibleUnstaged = GetVisibleChanges(_unstaged, _unstagedFilter);
                     SelectedUnstaged = [];
                 }
             }
         }
 
+        public string StagedFilter
+        {
+            get => _stagedFilter;
+            set
+            {
+                if (SetProperty(ref _stagedFilter, value))
+                {
+                    if (_isLoadingData)
+                        return;
+
+                    VisibleStaged = GetVisibleChanges(_staged, _stagedFilter);
+                    SelectedStaged = [];
+                }
+            }
+        }
+
         public List<Models.Change> Unstaged
         {
             get => _unstaged;
@@ -133,6 +149,12 @@ namespace SourceGit.ViewModels
             private set => SetProperty(ref _staged, value);
         }
 
+        public List<Models.Change> VisibleStaged
+        {
+            get => _visibleStaged;
+            private set => SetProperty(ref _visibleStaged, value);
+        }
+
         public List<Models.Change> SelectedUnstaged
         {
             get => _selectedUnstaged;
@@ -216,6 +238,9 @@ namespace SourceGit.ViewModels
             _visibleUnstaged.Clear();
             OnPropertyChanged(nameof(VisibleUnstaged));
 
+            _visibleStaged.Clear();
+            OnPropertyChanged(nameof(VisibleStaged));
+
             _unstaged.Clear();
             OnPropertyChanged(nameof(Unstaged));
 
@@ -269,7 +294,7 @@ namespace SourceGit.ViewModels
                 }
             }
 
-            var visibleUnstaged = GetVisibleUnstagedChanges(unstaged);
+            var visibleUnstaged = GetVisibleChanges(unstaged, _unstagedFilter);
             var selectedUnstaged = new List<Models.Change>();
             foreach (var c in visibleUnstaged)
             {
@@ -278,8 +303,10 @@ namespace SourceGit.ViewModels
             }
 
             var staged = GetStagedChanges();
+
+            var visibleStaged = GetVisibleChanges(staged, _stagedFilter);
             var selectedStaged = new List<Models.Change>();
-            foreach (var c in staged)
+            foreach (var c in visibleStaged)
             {
                 if (lastSelectedStaged.Contains(c.Path))
                     selectedStaged.Add(c);
@@ -290,6 +317,7 @@ namespace SourceGit.ViewModels
                 _isLoadingData = true;
                 HasUnsolvedConflicts = hasConflict;
                 VisibleUnstaged = visibleUnstaged;
+                VisibleStaged = visibleStaged;
                 Unstaged = unstaged;
                 Staged = staged;
                 SelectedUnstaged = selectedUnstaged;
@@ -337,7 +365,7 @@ namespace SourceGit.ViewModels
 
         public void UnstageAll()
         {
-            UnstageChanges(_staged, null);
+            UnstageChanges(_visibleStaged, null);
         }
 
         public void Discard(List<Models.Change> changes)
@@ -351,6 +379,11 @@ namespace SourceGit.ViewModels
             UnstagedFilter = string.Empty;
         }
  
+        public void ClearStagedFilter()
+        {
+            StagedFilter = string.Empty;
+        }
+
         public async void UseTheirs(List<Models.Change> changes)
         {
             _repo.SetWatcherEnabled(false);
@@ -1472,16 +1505,16 @@ namespace SourceGit.ViewModels
             return menu;
         }
 
-        private List<Models.Change> GetVisibleUnstagedChanges(List<Models.Change> unstaged)
+        private List<Models.Change> GetVisibleChanges(List<Models.Change> changes, string filter)
         {
-            if (string.IsNullOrEmpty(_unstagedFilter))
+            if (string.IsNullOrEmpty(filter))
-                return unstaged;
+                return changes;
 
             var visible = new List<Models.Change>();
 
-            foreach (var c in unstaged)
+            foreach (var c in changes)
             {
-                if (c.Path.Contains(_unstagedFilter, StringComparison.OrdinalIgnoreCase))
+                if (c.Path.Contains(filter, StringComparison.OrdinalIgnoreCase))
                     visible.Add(c);
             }
 
@@ -1599,7 +1632,8 @@ namespace SourceGit.ViewModels
 
         private async void UnstageChanges(List<Models.Change> changes, Models.Change next)
         {
-            if (changes.Count == 0)
+            var count = changes.Count;
+            if (count == 0)
                 return;
 
             // Use `_selectedStaged` instead of `SelectedStaged` to avoid UI refresh.
@@ -1611,16 +1645,15 @@ namespace SourceGit.ViewModels
             {
                 await Task.Run(() => new Commands.UnstageChangesForAmend(_repo.FullPath, changes).Exec());
             }
-            else if (changes.Count == _staged.Count)
+            else if (count == _staged.Count)
             {
                 await Task.Run(() => new Commands.Reset(_repo.FullPath).Exec());
             }
             else
             {
-                for (int i = 0; i < changes.Count; i += 10)
+                for (int i = 0; i < count; i += 10)
                 {
-                    var count = Math.Min(10, changes.Count - i);
+                    var step = changes.GetRange(i, Math.Min(10, count - i));
-                    var step = changes.GetRange(i, count);
                     await Task.Run(() => new Commands.Reset(_repo.FullPath, step).Exec());
                 }
             }
@@ -1650,6 +1683,13 @@ namespace SourceGit.ViewModels
                 return;
             }
 
+            if (!string.IsNullOrEmpty(_stagedFilter))
+            {
+                // FIXME - make this a proper warning message-box "Staged-area filter will not be applied to commit. Continue?" Yes/No
+                App.RaiseException(_repo.FullPath, "Committing with staged-area filter applied is NOT allowed!");
+                return;
+            }
+
             if (string.IsNullOrWhiteSpace(_commitMessage))
             {
                 App.RaiseException(_repo.FullPath, "Commit without message is NOT allowed!");
@@ -1729,11 +1769,13 @@ namespace SourceGit.ViewModels
         private List<Models.Change> _unstaged = [];
         private List<Models.Change> _visibleUnstaged = [];
         private List<Models.Change> _staged = [];
+        private List<Models.Change> _visibleStaged = [];
         private List<Models.Change> _selectedUnstaged = [];
         private List<Models.Change> _selectedStaged = [];
         private int _count = 0;
         private object _detailContext = null;
         private string _unstagedFilter = string.Empty;
+        private string _stagedFilter = string.Empty;
         private string _commitMessage = string.Empty;
 
         private bool _hasUnsolvedConflicts = false;

src/Views/WorkingCopy.axaml

@@ -129,7 +129,7 @@
                     Background="{DynamicResource Brush.Border0}"/>
 
       <!-- Staged -->
-      <Grid Grid.Row="2" RowDefinitions="28,*">
+      <Grid Grid.Row="2" RowDefinitions="28,36,*">
         <!-- Staged Toolbar -->
         <Border Grid.Row="0" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}">
           <Grid ColumnDefinitions="Auto,Auto,Auto,Auto,*,Auto,Auto,Auto">
@@ -156,14 +156,47 @@
           </Grid>
         </Border>
 
+        <!-- Staged Filter -->
+        <Border Grid.Row="1" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}">
+          <TextBox Height="24"
+                   Margin="4,0"
+                   BorderThickness="1"
+                   CornerRadius="12"
+                   Text="{Binding StagedFilter, Mode=TwoWay}"
+                   BorderBrush="{DynamicResource Brush.Border2}"
+                   VerticalContentAlignment="Center">
+            <TextBox.InnerLeftContent>
+              <Path Width="14" Height="14"
+                    Margin="6,0,0,0"
+                    Fill="{DynamicResource Brush.FG2}"
+                    Data="{StaticResource Icons.Search}"/>
+            </TextBox.InnerLeftContent>
+
+            <TextBox.InnerRightContent>
+              <Button Classes="icon_button"
+                      Width="16"
+                      Margin="0,0,6,0"
+                      Command="{Binding ClearStagedFilter}"
+                      IsVisible="{Binding StagedFilter, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"
+                      HorizontalAlignment="Right">
+                <Path Width="14" Height="14"
+                      Margin="0,1,0,0"
+                      Fill="{DynamicResource Brush.FG1}"
+                      Data="{StaticResource Icons.Clear}"/>
+              </Button>
+            </TextBox.InnerRightContent>
+          </TextBox>
+        </Border>
+        
         <!-- Staged Changes -->
-        <v:ChangeCollectionView Grid.Row="1"
+        <v:ChangeCollectionView Grid.Row="2"
                                 x:Name="StagedChangesView"
                                 Focusable="True"
+                                IsUnstagedChange="False"
                                 SelectionMode="Multiple"
                                 Background="{DynamicResource Brush.Contents}"
                                 ViewMode="{Binding Source={x:Static vm:Preferences.Instance}, Path=StagedChangeViewMode}"
-                                Changes="{Binding Staged}"
+                                Changes="{Binding VisibleStaged}"
                                 SelectedChanges="{Binding SelectedStaged, Mode=TwoWay}"
                                 ContextRequested="OnStagedContextRequested"
                                 ChangeDoubleTapped="OnStagedChangeDoubleTapped"