feature: git bisect support

Signed-off-by: leo <longshuang@msn.cn>

src/Views/BisectStateIndicator.cs

@@ -0,0 +1,134 @@
+using System;
+
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Media;
+
+namespace SourceGit.Views
+{
+    public class BisectStateIndicator : Control
+    {
+        public static readonly StyledProperty<IBrush> BackgroundProperty =
+            AvaloniaProperty.Register<BisectStateIndicator, IBrush>(nameof(Background), Brushes.Transparent);
+
+        public IBrush Background
+        {
+            get => GetValue(BackgroundProperty);
+            set => SetValue(BackgroundProperty, value);
+        }
+
+        public static readonly StyledProperty<IBrush> ForegroundProperty =
+            AvaloniaProperty.Register<BisectStateIndicator, IBrush>(nameof(Foreground), Brushes.White);
+
+        public IBrush Foreground
+        {
+            get => GetValue(ForegroundProperty);
+            set => SetValue(ForegroundProperty, value);
+        }
+
+        public static readonly StyledProperty<Models.Bisect> BisectProperty =
+            AvaloniaProperty.Register<BisectStateIndicator, Models.Bisect>(nameof(Bisect));
+
+        public Models.Bisect Bisect
+        {
+            get => GetValue(BisectProperty);
+            set => SetValue(BisectProperty, value);
+        }
+
+        static BisectStateIndicator()
+        {
+            AffectsMeasure<BisectStateIndicator>(BisectProperty);
+            AffectsRender<BisectStateIndicator>(BackgroundProperty, ForegroundProperty);
+        }
+
+        public override void Render(DrawingContext context)
+        {
+            if (_flags == Models.BisectCommitFlag.None)
+                return;
+
+            if (_prefix == null)
+            {
+                _prefix = LoadIcon("Icons.Bisect");
+                _good = LoadIcon("Icons.Check");
+                _bad = LoadIcon("Icons.Bad");
+            }
+
+            var x = 0.0;
+
+            if (_flags.HasFlag(Models.BisectCommitFlag.Good))
+            {
+                RenderImpl(context, Brushes.Green, _good, x);
+                x += 36;
+            }
+
+            if (_flags.HasFlag(Models.BisectCommitFlag.Bad))
+                RenderImpl(context, Brushes.Red, _bad, x);
+        }
+
+        protected override Size MeasureOverride(Size availableSize)
+        {
+            var desiredFlags = Models.BisectCommitFlag.None;
+            var desiredWidth = 0.0;
+            if (Bisect is { } bisect && DataContext is Models.Commit commit)
+            {
+                var sha = commit.SHA;
+                if (bisect.Goods.Contains(sha))
+                {
+                    desiredFlags |= Models.BisectCommitFlag.Good;
+                    desiredWidth = 36;
+                }
+
+                if (bisect.Bads.Contains(sha))
+                {
+                    desiredFlags |= Models.BisectCommitFlag.Bad;
+                    desiredWidth += 36;
+                }
+            }
+
+            if (desiredFlags != _flags)
+            {
+                _flags = desiredFlags;
+                InvalidateVisual();
+            }
+
+            return new Size(desiredWidth, desiredWidth > 0 ? 16 : 0);
+        }
+
+        private Geometry LoadIcon(string key)
+        {
+            var geo = this.FindResource(key) as StreamGeometry;
+            var drawGeo = geo!.Clone();
+            var iconBounds = drawGeo.Bounds;
+            var translation = Matrix.CreateTranslation(-(Vector)iconBounds.Position);
+            var scale = Math.Min(10.0 / iconBounds.Width, 10.0 / iconBounds.Height);
+            var transform = translation * Matrix.CreateScale(scale, scale);
+            if (drawGeo.Transform == null || drawGeo.Transform.Value == Matrix.Identity)
+                drawGeo.Transform = new MatrixTransform(transform);
+            else
+                drawGeo.Transform = new MatrixTransform(drawGeo.Transform.Value * transform);
+
+            return drawGeo;
+        }
+
+        private void RenderImpl(DrawingContext context, IBrush brush, Geometry icon, double x)
+        {
+            var entireRect = new RoundedRect(new Rect(x, 0, 32, 16), new CornerRadius(2));
+            var stateRect = new RoundedRect(new Rect(x + 16, 0, 16, 16), new CornerRadius(0, 2, 2, 0));
+            context.DrawRectangle(Background, new Pen(brush), entireRect);
+            using (context.PushOpacity(.2))
+                context.DrawRectangle(brush, null, stateRect);
+            context.DrawLine(new Pen(brush), new Point(x + 16, 0), new Point(x + 16, 16));
+
+            using (context.PushTransform(Matrix.CreateTranslation(x + 3, 3)))
+                context.DrawGeometry(Foreground, null, _prefix);
+
+            using (context.PushTransform(Matrix.CreateTranslation(x + 19, 3)))
+                context.DrawGeometry(Foreground, null, icon);
+        }
+
+        private Geometry _prefix = null;
+        private Geometry _good = null;
+        private Geometry _bad = null;
+        private Models.BisectCommitFlag _flags = Models.BisectCommitFlag.None;
+    }
+}

src/Views/Histories.axaml

@@ -131,14 +131,20 @@
                           ClipToBounds="True"
                           Background="Transparent"
                           ToolTip.Tip="{Binding Subject}">
-                    <Grid ColumnDefinitions="Auto,Auto,*" Margin="2,0,4,0" ClipToBounds="True">
+                    <Grid ColumnDefinitions="Auto,Auto,Auto,*" Margin="2,0,4,0" ClipToBounds="True">
                       <v:CommitStatusIndicator Grid.Column="0"
                                                CurrentBranch="{Binding $parent[v:Histories].CurrentBranch}"
                                                AheadBrush="{DynamicResource Brush.Accent}"
                                                BehindBrush="{DynamicResource Brush.FG1}"
                                                VerticalAlignment="Center"/>
+                      
+                      <v:BisectStateIndicator Grid.Column="1"
+                                              Background="{DynamicResource Brush.Contents}"
+                                              Foreground="{DynamicResource Brush.FG1}"
+                                              Bisect="{Binding $parent[v:Histories].Bisect}"
+                                              VerticalAlignment="Center"/>
 
-                      <v:CommitRefsPresenter Grid.Column="1"
+                      <v:CommitRefsPresenter Grid.Column="2"
                                              Background="{DynamicResource Brush.Contents}"
                                              Foreground="{DynamicResource Brush.FG1}"
                                              FontFamily="{DynamicResource Fonts.Primary}"
@@ -153,7 +159,7 @@
                         </v:CommitRefsPresenter.UseGraphColor>
                       </v:CommitRefsPresenter>
 
-                      <v:CommitSubjectPresenter Grid.Column="2"
+                      <v:CommitSubjectPresenter Grid.Column="3"
                                                 Classes="primary"
                                                 Subject="{Binding Subject}"
                                                 IssueTrackerRules="{Binding $parent[v:Histories].IssueTrackerRules}"

src/Views/Histories.axaml.cs

@@ -91,6 +91,15 @@ namespace SourceGit.Views
             set => SetValue(CurrentBranchProperty, value);
         }
 
+        public static readonly StyledProperty<Models.Bisect> BisectProperty =
+            AvaloniaProperty.Register<Histories, Models.Bisect>(nameof(Bisect));
+
+        public Models.Bisect Bisect
+        {
+            get => GetValue(BisectProperty);
+            set => SetValue(BisectProperty, value);
+        }
+
         public static readonly StyledProperty<AvaloniaList<Models.IssueTrackerRule>> IssueTrackerRulesProperty =
             AvaloniaProperty.Register<Histories, AvaloniaList<Models.IssueTrackerRule>>(nameof(IssueTrackerRules));
 

src/Views/Repository.axaml

@@ -585,7 +585,7 @@
                   BorderBrush="{DynamicResource Brush.Border0}"/>
 
     <!-- Right -->
-    <Grid Grid.Column="2" RowDefinitions="Auto,Auto,*">
+    <Grid Grid.Column="2" RowDefinitions="Auto,Auto,Auto,*">
       <Grid Grid.Row="0" Height="28" ColumnDefinitions="*,Auto" Background="{DynamicResource Brush.Conflict}" IsVisible="{Binding InProgressContext, Converter={x:Static ObjectConverters.IsNotNull}}">
         <ContentControl Grid.Column="0" Margin="8,0" Content="{Binding InProgressContext}">
           <ContentControl.DataTemplates>
@@ -665,7 +665,73 @@
                 Command="{Binding AbortMerge}"/>
       </Grid>
 
-      <Border Grid.Row="1" Background="{DynamicResource Brush.ToolBar}" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}">
+      <Grid Grid.Row="1"
+            Height="28"
+            ColumnDefinitions="*,Auto,Auto,Auto,Auto,Auto"
+            Background="{DynamicResource Brush.Conflict}"
+            IsVisible="{Binding BisectState, Converter={x:Static ObjectConverters.NotEqual}, ConverterParameter={x:Static m:BisectState.None}}">
+        <TextBlock Grid.Column="0"
+                   FontWeight="Bold"
+                   Margin="8,0"
+                   Foreground="{DynamicResource Brush.ConflictForeground}"
+                   Text="{DynamicResource Text.Bisect.WaitingForRange}"
+                   IsVisible="{Binding BisectState, Converter={x:Static ObjectConverters.Equal}, ConverterParameter={x:Static m:BisectState.WaitingForRange}}"/>
+
+        <TextBlock Grid.Column="0"
+                   FontWeight="Bold"
+                   Margin="8,0"
+                   Foreground="{DynamicResource Brush.ConflictForeground}"
+                   Text="{DynamicResource Text.Bisect.Detecting}"
+                   IsVisible="{Binding BisectState, Converter={x:Static ObjectConverters.Equal}, ConverterParameter={x:Static m:BisectState.Detecting}}"/>
+
+        <v:LoadingIcon Grid.Column="1"
+                       Width="14" Height="14"
+                       Margin="4,0"
+                       IsVisible="{Binding IsBisectCommandRunning}"/>
+
+        <Button Grid.Column="2"
+                Classes="flat"
+                Margin="4,0"
+                FontWeight="Regular"
+                BorderThickness="0"
+                Content="{DynamicResource Text.Bisect.Good}"
+                IsEnabled="{Binding !IsBisectCommandRunning}"
+                Padding="8,2"
+                Click="OnBisectCommand"
+                Tag="good"/>
+        <Button Grid.Column="3"
+                Classes="flat"
+                Margin="4,0"
+                FontWeight="Regular"
+                BorderThickness="0"
+                Content="{DynamicResource Text.Bisect.Bad}"
+                IsEnabled="{Binding !IsBisectCommandRunning}"
+                Padding="8,2"
+                Click="OnBisectCommand"
+                Tag="bad"/>
+        <Button Grid.Column="4"
+                Classes="flat"
+                Margin="4,0"
+                FontWeight="Regular"
+                BorderThickness="0"
+                Content="{DynamicResource Text.Bisect.Skip}"
+                IsEnabled="{Binding !IsBisectCommandRunning}"
+                Padding="8,2"
+                Click="OnBisectCommand"
+                Tag="skip"/>
+        <Button Grid.Column="5"
+                Classes="flat"
+                Margin="4,0"
+                FontWeight="Regular"
+                BorderThickness="0"
+                Content="{DynamicResource Text.Bisect.Abort}"
+                IsEnabled="{Binding !IsBisectCommandRunning}"
+                Padding="8,2"
+                Click="OnBisectCommand"
+                Tag="reset"/>
+      </Grid>
+      
+      <Border Grid.Row="2" Background="{DynamicResource Brush.ToolBar}" BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}">
         <Border.IsVisible>
           <MultiBinding Converter="{x:Static BoolConverters.And}">
             <Binding Path="SelectedViewIndex" Converter="{x:Static c:IntConverters.IsZero}"/>
@@ -721,10 +787,11 @@
         </Grid>
       </Border>
 
-      <ContentControl Grid.Row="2" Content="{Binding SelectedView}">
+      <ContentControl Grid.Row="3" Content="{Binding SelectedView}">
         <ContentControl.DataTemplates>
           <DataTemplate DataType="vm:Histories">
             <v:Histories CurrentBranch="{Binding Repo.CurrentBranch}"
+                         Bisect="{Binding Bisect}"
                          AuthorNameColumnWidth="{Binding Source={x:Static vm:Preferences.Instance}, Path=Layout.HistoriesAuthorColumnWidth, Mode=TwoWay}"
                          IssueTrackerRules="{Binding Repo.Settings.IssueTrackerRules}"
                          OnlyHighlightCurrentBranch="{Binding Repo.OnlyHighlightCurrentBranchInHistories}"

src/Views/Repository.axaml.cs

@@ -429,5 +429,15 @@ namespace SourceGit.Views
 
             e.Handled = true;
         }
+
+        private void OnBisectCommand(object sender, RoutedEventArgs e)
+        {
+            if (sender is Button button &&
+                DataContext is ViewModels.Repository { IsBisectCommandRunning: false } repo &&
+                repo.CanCreatePopup())
+                repo.Bisect(button.Tag as string);
+
+            e.Handled = true;
+        }
     }
 }

src/Views/RepositoryToolbar.axaml

@@ -100,6 +100,10 @@
         <Path Width="14" Height="14" Data="{StaticResource Icons.LFS}"/>
       </Button>
 
+      <Button Classes="icon_button" Width="32" Margin="8,0,0,0" Click="StartBisect" ToolTip.Tip="{DynamicResource Text.Bisect}">
+        <Path Width="14" Height="14" Data="{StaticResource Icons.Bisect}"/>
+      </Button>
+
       <Button Classes="icon_button" Width="32" Margin="8,0,0,0" Click="OpenCustomActionMenu" ToolTip.Tip="{DynamicResource Text.Repository.CustomActions}">
         <Path Width="14" Height="14" Data="{StaticResource Icons.Action}"/>
       </Button>

src/Views/RepositoryToolbar.axaml.cs

@@ -116,6 +116,21 @@ namespace SourceGit.Views
             e.Handled = true;
         }
 
+        private void StartBisect(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is ViewModels.Repository { IsBisectCommandRunning: false } repo &&
+                repo.InProgressContext == null &&
+                repo.CanCreatePopup())
+            {
+                if (repo.LocalChangesCount > 0)
+                    App.RaiseException(repo.FullPath, "You have un-committed local changes. Please discard or stash them first.");
+                else
+                    repo.Bisect("start");
+            }
+
+            e.Handled = true;
+        }
+
         private void OpenCustomActionMenu(object sender, RoutedEventArgs e)
         {
             if (DataContext is ViewModels.Repository repo && sender is Control control)