feature: simple interactive rebase support (#188)

* Only allow to start interactive rebase from merged commit in current branch
* The order of commits in the interactive rebase window is as same as it's in histories page.
* Unlike anthor git frontend app `Fork`, you should edit the final message on the last commit rather than the  previous commit that will be meld into while squashing commits

src/App.JsonCodeGen.cs

@@ -6,6 +6,7 @@ namespace SourceGit
     [JsonSourceGenerationOptions(WriteIndented = true, IgnoreReadOnlyFields = true, IgnoreReadOnlyProperties = true)]
     [JsonSerializable(typeof(Models.Version))]
     [JsonSerializable(typeof(Models.JetBrainsState))]
+    [JsonSerializable(typeof(List<Models.InteractiveRebaseJob>))]
     [JsonSerializable(typeof(Dictionary<string, string>))]
     [JsonSerializable(typeof(ViewModels.Preference))]
     internal partial class JsonCodeGen : JsonSerializerContext { }

src/App.axaml.cs

@@ -45,7 +45,10 @@ namespace SourceGit
         {
             try
             {
-                BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+                if (args.Length > 1 && args[0].Equals("--rebase-editor", StringComparison.Ordinal))
+                    Environment.Exit(Models.InteractiveRebaseEditor.Process(args[1]));
+                else
+                    BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
             }
             catch (Exception ex)
             {

src/Commands/Command.cs

@@ -43,9 +43,7 @@ namespace SourceGit.Commands
 
             // Force using en_US.UTF-8 locale to avoid GCM crash
             if (OperatingSystem.IsLinux())
-            {
                 start.Environment.Add("LANG", "en_US.UTF-8");
-            }
 
             if (!string.IsNullOrEmpty(WorkingDirectory))
                 start.WorkingDirectory = WorkingDirectory;

src/Commands/Rebase.cs

@@ -1,4 +1,6 @@
-namespace SourceGit.Commands
+using System.Diagnostics;
+
+namespace SourceGit.Commands
 {
     public class Rebase : Command
     {
@@ -12,4 +14,17 @@
             Args += basedOn;
         }
     }
+
+    public class InteractiveRebase : Command
+    {
+        public InteractiveRebase(string repo, string basedOn)
+        {
+            var exec = Process.GetCurrentProcess().MainModule.FileName;
+            var editor = $"\\\"{exec}\\\" --rebase-editor";
+
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"-c core.editor=\"{editor}\" -c sequence.editor=\"{editor}\" -c rebase.abbreviateCommands=true rebase -i --autosquash {basedOn}";
+        }
+    }
 }

src/Converters/InteractiveRebaseActionConverters.cs

@@ -0,0 +1,51 @@
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+
+namespace SourceGit.Converters
+{
+    public static class InteractiveRebaseActionConverters
+    {
+        public static readonly FuncValueConverter<Models.InteractiveRebaseAction, IBrush> ToIconBrush =
+            new FuncValueConverter<Models.InteractiveRebaseAction, IBrush>(v =>
+            {
+                switch (v)
+                {
+                    case Models.InteractiveRebaseAction.Pick:
+                        return Brushes.Green;
+                    case Models.InteractiveRebaseAction.Edit:
+                        return Brushes.Orange;
+                    case Models.InteractiveRebaseAction.Reword:
+                        return Brushes.Orange;
+                    case Models.InteractiveRebaseAction.Squash:
+                        return Brushes.LightGray;
+                    case Models.InteractiveRebaseAction.Fixup:
+                        return Brushes.LightGray;
+                    default:
+                        return Brushes.Red;
+                }
+            });
+
+        public static readonly FuncValueConverter<Models.InteractiveRebaseAction, string> ToName =
+            new FuncValueConverter<Models.InteractiveRebaseAction, string>(v =>
+            {
+                switch (v)
+                {
+                    case Models.InteractiveRebaseAction.Pick:
+                        return "Pick";
+                    case Models.InteractiveRebaseAction.Edit:
+                        return "Edit";
+                    case Models.InteractiveRebaseAction.Reword:
+                        return "Reword";
+                    case Models.InteractiveRebaseAction.Squash:
+                        return "Squash";
+                    case Models.InteractiveRebaseAction.Fixup:
+                        return "Fixup";
+                    default:
+                        return "Drop";
+                }
+            });
+
+        public static readonly FuncValueConverter<Models.InteractiveRebaseAction, bool> CanEditMessage =
+            new FuncValueConverter<Models.InteractiveRebaseAction, bool>(v => v == Models.InteractiveRebaseAction.Reword || v == Models.InteractiveRebaseAction.Squash);
+    }
+}

src/Models/InteractiveRebaseEditor.cs

@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text.Json;
+
+namespace SourceGit.Models
+{
+    public enum InteractiveRebaseAction
+    {
+        Pick,
+        Edit,
+        Reword,
+        Squash,
+        Fixup,
+        Drop,
+    }
+
+    public class InteractiveRebaseJob
+    {
+        public string SHA { get; set; } = string.Empty;
+        public InteractiveRebaseAction Action { get; set; } = InteractiveRebaseAction.Pick;
+        public string Message { get; set; } = string.Empty;
+    }
+
+    public static class InteractiveRebaseEditor
+    {
+        public static int Process(string file)
+        {
+
+            File.AppendAllLines("E:\\unknown.txt", ["------------", file]);
+
+            try
+            {
+                var filename = Path.GetFileName(file);
+                if (filename.Equals("git-rebase-todo", StringComparison.OrdinalIgnoreCase))
+                {
+                    File.AppendAllLines("E:\\unknown.txt", ["git-rebase-todo start"]);
+                    var dirInfo = new DirectoryInfo(Path.GetDirectoryName(file));
+                    if (!dirInfo.Exists || !dirInfo.Name.Equals("rebase-merge", StringComparison.Ordinal))
+                    {
+                        File.WriteAllLines("E:\\test.txt", ["git-rebase-todo", file]);
+                        return -1;
+                    }
+
+                    var jobsFile = Path.Combine(dirInfo.Parent.FullName, "sourcegit_rebase_jobs.json");
+                    if (!File.Exists(jobsFile))
+                    {
+                        File.WriteAllLines("E:\\test.txt", ["git-rebase-todo", file, jobsFile]);
+                        return -1;
+                    }
+
+                    var jobs = JsonSerializer.Deserialize(File.ReadAllText(jobsFile), JsonCodeGen.Default.ListInteractiveRebaseJob);
+                    var lines = new List<string>();
+                    foreach (var job in jobs)
+                    {
+                        switch (job.Action)
+                        {
+                            case InteractiveRebaseAction.Pick:
+                                lines.Add($"p {job.SHA}");
+                                break;
+                            case InteractiveRebaseAction.Edit:
+                                lines.Add($"e {job.SHA}");
+                                break;
+                            case InteractiveRebaseAction.Reword:
+                                lines.Add($"r {job.SHA}");
+                                break;
+                            case InteractiveRebaseAction.Squash:
+                                lines.Add($"s {job.SHA}");
+                                break;
+                            case InteractiveRebaseAction.Fixup:
+                                lines.Add($"f {job.SHA}");
+                                break;
+                            default:
+                                lines.Add($"d {job.SHA}");
+                                break;
+                        }
+                    }
+
+                    File.AppendAllLines("E:\\unknown.txt", ["git-rebase-todo end"]);
+                    File.WriteAllLines(file, lines);
+                } 
+                else if (filename.Equals("COMMIT_EDITMSG", StringComparison.OrdinalIgnoreCase))
+                {
+                    File.AppendAllLines("E:\\unknown.txt", ["COMMIT_EDITMSG start"]);
+                    var jobsFile = Path.Combine(Path.GetDirectoryName(file), "sourcegit_rebase_jobs.json");
+                    if (!File.Exists(jobsFile))
+                        return 0;
+
+                    var jobs = JsonSerializer.Deserialize(File.ReadAllText(jobsFile), JsonCodeGen.Default.ListInteractiveRebaseJob);
+                    var doneFile = Path.Combine(Path.GetDirectoryName(file), "rebase-merge", "done");
+                    if (!File.Exists(doneFile))
+                        return -1;
+
+                    var done = File.ReadAllText(doneFile).Split(['\n', '\r'], StringSplitOptions.RemoveEmptyEntries);
+                    if (done.Length > jobs.Count)
+                        return -1;
+
+                    var job = jobs[done.Length - 1];
+                    File.WriteAllText(file, job.Message);
+
+                    File.AppendAllLines("E:\\unknown.txt", ["COMMIT_EDITMSG end", File.ReadAllText(doneFile).ReplaceLineEndings("|")]);
+                }
+                else
+                {
+                    File.AppendAllLines("E:\\unknown.txt", [file]);
+                }
+
+                return 0;
+            }
+            catch
+            {
+                return -1;
+            }
+        }
+    }
+}

src/Resources/Icons.axaml

@@ -102,4 +102,5 @@
   <StreamGeometry x:Key="Icons.Unlock">M832 464H332V240c0-31 25-56 56-56h248c31 0 56 25 56 56v68c0 4 4 8 8 8h56c4 0 8-4 8-8v-68c0-71-57-128-128-128H388c-71 0-128 57-128 128v224h-68c-18 0-32 14-32 32v384c0 18 14 32 32 32h640c18 0 32-14 32-32V496c0-18-14-32-32-32zM540 701v53c0 4-4 8-8 8h-40c-4 0-8-4-8-8v-53c-12-9-20-23-20-39 0-27 22-48 48-48s48 22 48 48c0 16-8 30-20 39z</StreamGeometry>
   <StreamGeometry x:Key="Icons.Track">M897 673v13c0 51-42 93-93 93h-10c-1 0-2 0-2 0H220c-23 0-42 19-42 42v13c0 23 19 42 42 42h552c14 0 26 12 26 26 0 14-12 26-26 26H220c-51 0-93-42-93-93v-13c0-51 42-93 93-93h20c1-0 2-0 2-0h562c23 0 42-19 42-42v-13c0-11-5-22-13-29-8-7-17-11-28-10H660c-14 0-26-12-26-26 0-14 12-26 26-26h144c24-1 47 7 65 24 18 17 29 42 29 67zM479 98c-112 0-203 91-203 203 0 44 14 85 38 118l132 208c15 24 50 24 66 0l133-209c23-33 37-73 37-117 0-112-91-203-203-203zm0 327c-68 0-122-55-122-122s55-122 122-122 122 55 122 122-55 122-122 122z</StreamGeometry>
   <StreamGeometry x:Key="Icons.Whitespace">M416 64H768v64h-64v704h64v64H448v-64h64V512H416a224 224 0 1 1 0-448zM576 832h64V128H576v704zM416 128H512v320H416a160 160 0 0 1 0-320z</StreamGeometry>
+  <StreamGeometry x:Key="Icons.InteractiveRebase">M512 64A447 447 0 0064 512c0 248 200 448 448 448s448-200 448-448S760 64 512 64zM218 295h31c54 0 105 19 145 55 13 12 13 31 3 43a35 35 0 01-22 10 36 36 0 01-21-7 155 155 0 00-103-39h-31a32 32 0 01-31-31c0-18 13-31 30-31zm31 433h-31a32 32 0 01-31-31c0-16 13-31 31-31h31A154 154 0 00403 512 217 217 0 01620 295h75l-93-67a33 33 0 01-7-43 33 33 0 0143-7l205 148-205 148a29 29 0 01-18 6 32 32 0 01-31-31c0-10 4-19 13-25l93-67H620a154 154 0 00-154 154c0 122-97 220-217 220zm390 118a29 29 0 01-18 6 32 32 0 01-31-31c0-10 4-19 13-25l93-67h-75c-52 0-103-19-143-54-12-12-13-31-1-43a30 30 0 0142-3 151 151 0 00102 39h75L602 599a33 33 0 01-7-43 33 33 0 0143-7l205 148-203 151z</StreamGeometry>
 </ResourceDictionary>

src/Resources/Locales/en_US.axaml

@@ -85,6 +85,7 @@
   <x:String x:Key="Text.CommitCM.CompareWithHead" xml:space="preserve">Compare with HEAD</x:String>
   <x:String x:Key="Text.CommitCM.CompareWithWorktree" xml:space="preserve">Compare with Worktree</x:String>
   <x:String x:Key="Text.CommitCM.CopySHA" xml:space="preserve">Copy SHA</x:String>
+  <x:String x:Key="Text.CommitCM.InteractiveRebase" xml:space="preserve">Interactive Rebase ${0}$ to Here</x:String>
   <x:String x:Key="Text.CommitCM.Rebase" xml:space="preserve">Rebase ${0}$ to Here</x:String>
   <x:String x:Key="Text.CommitCM.Reset" xml:space="preserve">Reset ${0}$ to Here</x:String>
   <x:String x:Key="Text.CommitCM.Revert" xml:space="preserve">Revert Commit</x:String>
@@ -287,6 +288,11 @@
   <x:String x:Key="Text.InProgress.Merge" xml:space="preserve">Merge request in progress. Press 'Abort' to restore original HEAD.</x:String>
   <x:String x:Key="Text.InProgress.Rebase" xml:space="preserve">Rebase in progress. Press 'Abort' to restore original HEAD.</x:String>
   <x:String x:Key="Text.InProgress.Revert" xml:space="preserve">Revert in progress. Press 'Abort' to restore original HEAD.</x:String>
+  <x:String x:Key="Text.InteractiveRebase" xml:space="preserve">Interactive Rebase</x:String>
+  <x:String x:Key="Text.InteractiveRebase.Target" xml:space="preserve">Target Branch:</x:String>
+  <x:String x:Key="Text.InteractiveRebase.On" xml:space="preserve">On:</x:String>
+  <x:String x:Key="Text.InteractiveRebase.MoveUp" xml:space="preserve">Move Up</x:String>
+  <x:String x:Key="Text.InteractiveRebase.MoveDown" xml:space="preserve">Move Down</x:String>
   <x:String x:Key="Text.Launcher" xml:space="preserve">Source Git</x:String>
   <x:String x:Key="Text.Launcher.Error" xml:space="preserve">ERROR</x:String>
   <x:String x:Key="Text.Launcher.Info" xml:space="preserve">NOTICE</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -88,6 +88,7 @@
   <x:String x:Key="Text.CommitCM.CompareWithHead" xml:space="preserve">与当前HEAD比较</x:String>
   <x:String x:Key="Text.CommitCM.CompareWithWorktree" xml:space="preserve">与本地工作树比较</x:String>
   <x:String x:Key="Text.CommitCM.CopySHA" xml:space="preserve">复制提交指纹</x:String>
+  <x:String x:Key="Text.CommitCM.InteractiveRebase" xml:space="preserve">交互式变基(rebase -i) ${0}$ 到此处</x:String>
   <x:String x:Key="Text.CommitCM.Rebase" xml:space="preserve">变基(rebase) ${0}$ 到此处</x:String>
   <x:String x:Key="Text.CommitCM.Reset" xml:space="preserve">重置(reset) ${0}$ 到此处</x:String>
   <x:String x:Key="Text.CommitCM.Revert" xml:space="preserve">回滚此提交</x:String>
@@ -290,6 +291,11 @@
   <x:String x:Key="Text.InProgress.Merge" xml:space="preserve">合并操作进行中。点击【终止】回滚到操作前的状态。</x:String>
   <x:String x:Key="Text.InProgress.Rebase" xml:space="preserve">变基（Rebase）操作进行中。点击【终止】回滚到操作前的状态。</x:String>
   <x:String x:Key="Text.InProgress.Revert" xml:space="preserve">回滚提交操作进行中。点击【终止】回滚到操作前的状态。</x:String>
+  <x:String x:Key="Text.InteractiveRebase" xml:space="preserve">交互式变基</x:String>
+  <x:String x:Key="Text.InteractiveRebase.Target" xml:space="preserve">目标分支 ：</x:String>
+  <x:String x:Key="Text.InteractiveRebase.On" xml:space="preserve">起始提交 ：</x:String>
+  <x:String x:Key="Text.InteractiveRebase.MoveUp" xml:space="preserve">向上移动</x:String>
+  <x:String x:Key="Text.InteractiveRebase.MoveDown" xml:space="preserve">向下移动</x:String>
   <x:String x:Key="Text.Launcher" xml:space="preserve">Source Git</x:String>
   <x:String x:Key="Text.Launcher.Error" xml:space="preserve">出错了</x:String>
   <x:String x:Key="Text.Launcher.Info" xml:space="preserve">系统提示</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -88,6 +88,7 @@
   <x:String x:Key="Text.CommitCM.CompareWithHead" xml:space="preserve">與當前HEAD比較</x:String>
   <x:String x:Key="Text.CommitCM.CompareWithWorktree" xml:space="preserve">與本地工作樹比較</x:String>
   <x:String x:Key="Text.CommitCM.CopySHA" xml:space="preserve">複製提交指紋</x:String>
+  <x:String x:Key="Text.CommitCM.InteractiveRebase" xml:space="preserve">互動式變基(rebase -i) ${0}$ 到此處</x:String>
   <x:String x:Key="Text.CommitCM.Rebase" xml:space="preserve">變基(rebase) ${0}$ 到此處</x:String>
   <x:String x:Key="Text.CommitCM.Reset" xml:space="preserve">重置(reset) ${0}$ 到此處</x:String>
   <x:String x:Key="Text.CommitCM.Revert" xml:space="preserve">回滾此提交</x:String>
@@ -290,6 +291,11 @@
   <x:String x:Key="Text.InProgress.Merge" xml:space="preserve">合併操作進行中。點選【終止】回滾到操作前的狀態。</x:String>
   <x:String x:Key="Text.InProgress.Rebase" xml:space="preserve">變基（Rebase）操作進行中。點選【終止】回滾到操作前的狀態。</x:String>
   <x:String x:Key="Text.InProgress.Revert" xml:space="preserve">回滾提交操作進行中。點選【終止】回滾到操作前的狀態。</x:String>
+  <x:String x:Key="Text.InteractiveRebase" xml:space="preserve">互動式變基</x:String>
+  <x:String x:Key="Text.InteractiveRebase.Target" xml:space="preserve">目標分支 ：</x:String>
+  <x:String x:Key="Text.InteractiveRebase.On" xml:space="preserve">起始提交 ：</x:String>
+  <x:String x:Key="Text.InteractiveRebase.MoveUp" xml:space="preserve">向上移動</x:String>
+  <x:String x:Key="Text.InteractiveRebase.MoveDown" xml:space="preserve">向下移動</x:String>
   <x:String x:Key="Text.Launcher" xml:space="preserve">Source Git</x:String>
   <x:String x:Key="Text.Launcher.Error" xml:space="preserve">出錯了</x:String>
   <x:String x:Key="Text.Launcher.Info" xml:space="preserve">系統提示</x:String>

src/Resources/Styles.axaml

@@ -160,6 +160,11 @@
     <Setter Property="FontSize" Value="{Binding Source={x:Static vm:Preference.Instance}, Path=DefaultFontSize}"/>
   </Style>
 
+  <Style Selector="FlyoutPresenter">
+    <Setter Property="MaxWidth" Value="1024"/>
+    <Setter Property="MaxHeight" Value="768"/>
+  </Style>
+
   <Style Selector="Path">
     <Setter Property="Fill" Value="{DynamicResource Brush.FG1}"/>
     <Setter Property="Stretch" Value="Uniform"/>

src/ViewModels/Histories.cs

@@ -277,6 +277,18 @@ namespace SourceGit.ViewModels
                     e.Handled = true;
                 };
                 menu.Items.Add(revert);
+
+                var interactiveRebase = new MenuItem();
+                interactiveRebase.Header = new Views.NameHighlightedTextBlock("CommitCM.InteractiveRebase", current.Name);
+                interactiveRebase.Icon = App.CreateMenuIcon("Icons.InteractiveRebase");
+                interactiveRebase.IsVisible = current.Head != commit.SHA;
+                interactiveRebase.Click += (o, e) =>
+                {
+                    var dialog = new Views.InteractiveRebase() { DataContext = new InteractiveRebase(_repo, current, commit) };
+                    dialog.ShowDialog(App.GetTopLevel() as Window);
+                    e.Handled = true;
+                };
+                menu.Items.Add(interactiveRebase);
             }
 
             if (current.Head != commit.SHA)

src/ViewModels/InProgressContexts.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System.Diagnostics;
+using System.IO;
 
 namespace SourceGit.ViewModels
 {
@@ -57,12 +58,24 @@ namespace SourceGit.ViewModels
 
         public override bool Continue()
         {
-            var succ = base.Continue();
+            var exec = Process.GetCurrentProcess().MainModule.FileName;
+            var editor = $"\\\"{exec}\\\" --rebase-editor";
+
+            var succ = new Commands.Command()
+            {
+                WorkingDirectory = Repository,
+                Context = Repository,
+                Args = $"-c core.editor=\"{editor}\" rebase --continue",
+            }.Exec();
+
             if (succ)
             {
+                var jobsFile = Path.Combine(_gitDir, "sourcegit_rebase_jobs.json");
                 var rebaseMergeHead = Path.Combine(_gitDir, "REBASE_HEAD");
                 var rebaseMergeFolder = Path.Combine(_gitDir, "rebase-merge");
                 var rebaseApplyFolder = Path.Combine(_gitDir, "rebase-apply");
+                if (File.Exists(jobsFile))
+                    File.Delete(jobsFile);
                 if (File.Exists(rebaseMergeHead))
                     File.Delete(rebaseMergeHead);
                 if (Directory.Exists(rebaseMergeFolder))

src/ViewModels/InteractiveRebase.cs

@@ -0,0 +1,199 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text.Json;
+using System.Threading.Tasks;
+
+using Avalonia.Collections;
+using Avalonia.Threading;
+
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace SourceGit.ViewModels
+{
+    public class InteractiveRebaseItem : ObservableObject
+    {
+        public Models.Commit Commit
+        {
+            get;
+            private set;
+        }
+
+        public Models.InteractiveRebaseAction Action
+        {
+            get => _action;
+            private set => SetProperty(ref _action, value);
+        }
+
+        public string Subject
+        {
+            get => _subject;
+            private set => SetProperty(ref _subject, value);
+        }
+
+        public string FullMessage
+        {
+            get => _fullMessage;
+            set
+            {
+                if (SetProperty(ref _fullMessage, value))
+                {
+                    var normalized = value.ReplaceLineEndings("\n");
+                    var idx = normalized.IndexOf("\n\n", StringComparison.Ordinal);
+                    if (idx > 0)
+                        Subject = normalized.Substring(0, idx).ReplaceLineEndings(" ");
+                    else
+                        Subject = value.ReplaceLineEndings(" ");
+                }
+            }
+        }
+
+        public InteractiveRebaseItem(Models.Commit c, string message)
+        {
+            Commit = c;
+
+            _subject = c.Subject;
+            _fullMessage = message;
+        }
+
+        public void SetAction(object param)
+        {
+            Action = (Models.InteractiveRebaseAction)param;
+        }
+
+        private Models.InteractiveRebaseAction _action = Models.InteractiveRebaseAction.Pick;
+        private string _subject = string.Empty;
+        private string _fullMessage = string.Empty;
+    }
+
+    public class InteractiveRebase : ObservableObject
+    {
+        public Models.Branch Current
+        {
+            get;
+            private set;
+        }
+
+        public Models.Commit On
+        {
+            get;
+            private set;
+        }
+
+        public bool IsLoading
+        {
+            get => _isLoading;
+            private set => SetProperty(ref _isLoading, value);
+        }
+
+        public AvaloniaList<InteractiveRebaseItem> Items
+        {
+            get;
+            private set;
+        } = new AvaloniaList<InteractiveRebaseItem>();
+
+        public InteractiveRebaseItem SelectedItem
+        {
+            get => _selectedItem;
+            set
+            {
+                if (SetProperty(ref _selectedItem, value))
+                    DetailContext.Commit = value != null ? value.Commit : null;
+            }
+        }
+
+        public CommitDetail DetailContext
+        {
+            get;
+            private set;
+        }
+
+        public InteractiveRebase(Repository repo, Models.Branch current, Models.Commit on)
+        {
+            var repoPath = repo.FullPath;
+            _repo = repo;
+
+            Current = current;
+            On = on;
+            IsLoading = true;
+            DetailContext = new CommitDetail(repoPath);
+
+            Task.Run(() =>
+            {
+                var commits = new Commands.QueryCommits(repoPath, $"{on.SHA}...HEAD", false).Result();
+                var messages = new Dictionary<string, string>();
+
+                foreach (var c in commits)
+                {
+                    var fullMessage = new Commands.QueryCommitFullMessage(repoPath, c.SHA).Result();
+                    messages.Add(c.SHA, fullMessage);
+                }
+
+                Dispatcher.UIThread.Invoke(() =>
+                {
+                    var list = new List<InteractiveRebaseItem>();
+                    foreach (var c in commits)
+                        list.Add(new InteractiveRebaseItem(c, messages[c.SHA]));
+
+                    Items.AddRange(list);
+                    IsLoading = false;
+                });
+            });
+        }
+
+        public void MoveItemUp(InteractiveRebaseItem item)
+        {
+            var idx = Items.IndexOf(item);
+            if (idx > 0)
+            {
+                var prev = Items[idx - 1];
+                Items.RemoveAt(idx - 1);
+                Items.Insert(idx, prev);
+            }
+        }
+
+        public void MoveItemDown(InteractiveRebaseItem item)
+        {
+            var idx = Items.IndexOf(item);
+            if (idx < Items.Count - 1)
+            {
+                var next = Items[idx + 1];
+                Items.RemoveAt(idx + 1);
+                Items.Insert(idx, next);
+            }
+        }
+
+        public Task<bool> Start()
+        {
+            _repo.SetWatcherEnabled(false);
+
+            var saveFile = Path.Combine(_repo.GitDir, "sourcegit_rebase_jobs.json");
+            var jobs = new List<Models.InteractiveRebaseJob>();
+            for (int i = Items.Count - 1; i >= 0; i--)
+            {
+                var item = Items[i];
+                jobs.Add(new Models.InteractiveRebaseJob()
+                {
+                    SHA = item.Commit.SHA,
+                    Action = item.Action,
+                    Message = item.FullMessage,
+                });
+            }
+            File.WriteAllText(saveFile, JsonSerializer.Serialize(jobs, JsonCodeGen.Default.ListInteractiveRebaseJob));
+
+            return Task.Run(() =>
+            {
+                var succ = new Commands.InteractiveRebase(_repo.FullPath, On.SHA).Exec();
+                if (succ)
+                    File.Delete(saveFile);
+
+                Dispatcher.UIThread.Invoke(() => _repo.SetWatcherEnabled(true));
+                return succ;
+            });
+        }
+
+        private Repository _repo = null;
+        private bool _isLoading = false;
+        private InteractiveRebaseItem _selectedItem = null;
+    }
+}

src/Views/InteractiveRebase.axaml

@@ -0,0 +1,298 @@
+<v:ChromelessWindow xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+                    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+                    xmlns:m="using:SourceGit.Models"
+                    xmlns:vm="using:SourceGit.ViewModels"
+                    xmlns:c="using:SourceGit.Converters"
+                    xmlns:v="using:SourceGit.Views"
+                    mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+                    x:Class="SourceGit.Views.InteractiveRebase"
+                    x:DataType="vm:InteractiveRebase"
+                    Title="{DynamicResource Text.InteractiveRebase}"
+                    Width="1080" Height="720"
+                    WindowStartupLocation="CenterOwner">
+  <Grid RowDefinitions="Auto,Auto,*,Auto">
+    <!-- TitleBar -->
+    <Grid Grid.Row="0" ColumnDefinitions="Auto,*,Auto" Height="30">
+      <Border Grid.Column="0" Grid.ColumnSpan="3"
+              Background="{DynamicResource Brush.TitleBar}"
+              BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}"
+              PointerPressed="BeginMoveWindow"/>
+
+      <Path Grid.Column="0"
+            Width="14" Height="14"
+            Margin="10,0,0,0"
+            Data="{StaticResource Icons.InteractiveRebase}"
+            IsVisible="{OnPlatform True, macOS=False}"/>
+
+      <Grid Grid.Column="0" Classes="caption_button_box" Margin="2,4,0,0" IsVisible="{OnPlatform False, macOS=True}">
+        <Button Classes="caption_button_macos" Click="CloseWindow">
+          <Grid>
+            <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
+            <Path Height="6" Width="6" Stretch="Fill" Fill="#404040" Stroke="#404040" StrokeThickness="1" Data="{StaticResource Icons.Window.Close}"/>
+          </Grid>
+        </Button>
+      </Grid>
+
+      <TextBlock Grid.Column="0" Grid.ColumnSpan="3"
+                 Classes="bold"
+                 Text="{DynamicResource Text.InteractiveRebase}"
+                 HorizontalAlignment="Center" VerticalAlignment="Center"
+                 IsHitTestVisible="False"/>
+
+      <Button Grid.Column="2"
+              Classes="caption_button"
+              Click="CloseWindow"
+              IsVisible="{OnPlatform True, macOS=False}">
+        <Path Data="{StaticResource Icons.Window.Close}"/>
+      </Button>
+    </Grid>
+
+    <!-- Operation Information -->
+    <Grid Grid.Row="1" ColumnDefinitions="Auto,Auto,Auto,Auto,Auto,Auto,*" Margin="8">
+      <TextBlock Grid.Column="0" Text="{DynamicResource Text.InteractiveRebase.Target}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+      <Path Grid.Column="1" Width="14" Height="14" Margin="8,0,0,0" Data="{StaticResource Icons.Branch}"/>
+      <TextBlock Grid.Column="2" VerticalAlignment="Center" Text="{Binding Current, Converter={x:Static c:BranchConverters.ToName}}" Margin="8,0,0,0"/>
+
+      <TextBlock Grid.Column="3" Margin="48,0,0,0" Text="{DynamicResource Text.InteractiveRebase.On}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+      <Path Grid.Column="4" Width="14" Height="14" Margin="8,8,0,0" Data="{StaticResource Icons.Commit}"/>
+      <TextBlock Grid.Column="5" Classes="monospace" VerticalAlignment="Center" Text="{Binding On.SHA, Converter={x:Static c:StringConverters.ToShortSHA}}" Foreground="DarkOrange" Margin="8,0,0,0"/>
+      <TextBlock Grid.Column="6" VerticalAlignment="Center" Text="{Binding On.Subject}" Margin="4,0,0,0" TextTrimming="CharacterEllipsis"/>
+    </Grid>
+    
+    <!-- Body -->
+    <Border Grid.Row="2" Margin="8,0,8,8" BorderThickness="1" BorderBrush="{DynamicResource Brush.Border0}">
+      <Grid RowDefinitions="*,3,*">
+        <DataGrid Grid.Row="0"
+                  Background="{DynamicResource Brush.Contents}"
+                  ItemsSource="{Binding Items}"
+                  SelectionMode="Single"
+                  SelectedItem="{Binding SelectedItem, Mode=OneWayToSource}"
+                  CanUserReorderColumns="False"
+                  CanUserResizeColumns="False"
+                  CanUserSortColumns="False"
+                  DragDrop.AllowDrop="True"
+                  IsReadOnly="True"
+                  HeadersVisibility="None"
+                  Focusable="False"
+                  RowHeight="28"
+                  HorizontalScrollBarVisibility="Disabled"
+                  VerticalScrollBarVisibility="Auto"
+                  KeyDown="OnDataGridKeyDown">          
+          <DataGrid.Columns>
+            <DataGridTemplateColumn Header="Option">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <Button Opacity="1" Margin="4,0,0,0" Padding="8,2" Background="Transparent">
+                    <Button.Flyout>
+                      <MenuFlyout Placement="BottomEdgeAlignedLeft" VerticalOffset="-4">
+                        <MenuItem InputGesture="P" Command="{Binding SetAction}" CommandParameter="{x:Static m:InteractiveRebaseAction.Pick}">
+                          <MenuItem.Icon>
+                            <Ellipse Width="14" Height="14" Fill="Green"/>
+                          </MenuItem.Icon>
+                          <MenuItem.Header>
+                            <Grid ColumnDefinitions="64,240">
+                              <TextBlock Grid.Column="0" Classes="monospace" Margin="4,0" Text="Pick"/>
+                              <TextBlock Grid.Column="1" Text="Use this commit" Foreground="{DynamicResource Brush.FG2}"/>
+                            </Grid>
+                          </MenuItem.Header>
+                        </MenuItem>
+
+                        <MenuItem InputGesture="E" Command="{Binding SetAction}" CommandParameter="{x:Static m:InteractiveRebaseAction.Edit}">
+                          <MenuItem.Icon>
+                            <Ellipse Width="14" Height="14" Fill="Orange"/>
+                          </MenuItem.Icon>
+                          <MenuItem.Header>
+                            <Grid ColumnDefinitions="64,240">
+                              <TextBlock Grid.Column="0" Classes="monospace" Margin="4,0" Text="Edit"/>
+                              <TextBlock Grid.Column="1" Text="Stop for amending" Foreground="{DynamicResource Brush.FG2}"/>
+                            </Grid>
+                          </MenuItem.Header>
+                        </MenuItem>
+
+                        <MenuItem InputGesture="R" Command="{Binding SetAction}" CommandParameter="{x:Static m:InteractiveRebaseAction.Reword}">
+                          <MenuItem.Icon>
+                            <Ellipse Width="14" Height="14" Fill="Orange"/>
+                          </MenuItem.Icon>
+                          <MenuItem.Header>
+                            <Grid ColumnDefinitions="64,240">
+                              <TextBlock Grid.Column="0" Classes="monospace" Margin="4,0" Text="Reword"/>
+                              <TextBlock Grid.Column="1" Text="Edit the commit message" Foreground="{DynamicResource Brush.FG2}"/>
+                            </Grid>
+                          </MenuItem.Header>
+                        </MenuItem>
+
+                        <MenuItem InputGesture="S" Command="{Binding SetAction}" CommandParameter="{x:Static m:InteractiveRebaseAction.Squash}">
+                          <MenuItem.Icon>
+                            <Ellipse Width="14" Height="14" Fill="LightGray"/>
+                          </MenuItem.Icon>
+                          <MenuItem.Header>
+                            <Grid ColumnDefinitions="64,240">
+                              <TextBlock Grid.Column="0" Classes="monospace" Margin="4,0" Text="Squash"/>
+                              <TextBlock Grid.Column="1" Text="Meld into previous commit" Foreground="{DynamicResource Brush.FG2}"/>
+                            </Grid>
+                          </MenuItem.Header>
+                        </MenuItem>
+
+                        <MenuItem InputGesture="F" Command="{Binding SetAction}" CommandParameter="{x:Static m:InteractiveRebaseAction.Fixup}">
+                          <MenuItem.Icon>
+                            <Ellipse Width="14" Height="14" Fill="LightGray"/>
+                          </MenuItem.Icon>
+                          <MenuItem.Header>
+                            <Grid ColumnDefinitions="64,240">
+                              <TextBlock Grid.Column="0" Classes="monospace" Margin="4,0" Text="Fixup"/>
+                              <TextBlock Grid.Column="1" Text="Like 'Squash' but discard message" Foreground="{DynamicResource Brush.FG2}"/>
+                            </Grid>
+                          </MenuItem.Header>
+                        </MenuItem>
+
+                        <MenuItem InputGesture="D" Command="{Binding SetAction}" CommandParameter="{x:Static m:InteractiveRebaseAction.Drop}">
+                          <MenuItem.Icon>
+                            <Ellipse Width="14" Height="14" Fill="Red"/>
+                          </MenuItem.Icon>
+                          <MenuItem.Header>
+                            <Grid ColumnDefinitions="64,240">
+                              <TextBlock Grid.Column="0" Classes="monospace" Margin="4,0" Text="Drop"/>
+                              <TextBlock Grid.Column="1" Text="Remove commit" Foreground="{DynamicResource Brush.FG2}"/>
+                            </Grid>
+                          </MenuItem.Header>
+                        </MenuItem>
+                      </MenuFlyout>
+                    </Button.Flyout>
+                    
+                    <StackPanel Orientation="Horizontal">
+                      <Ellipse Grid.Column="0" Width="14" Height="14" Fill="{Binding Action, Converter={x:Static c:InteractiveRebaseActionConverters.ToIconBrush}}"/>
+                      <TextBlock Grid.Column="1" Classes="monospace" Margin="8,0" Text="{Binding Action, Converter={x:Static c:InteractiveRebaseActionConverters.ToName}}"/>
+                    </StackPanel>
+                  </Button>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn Width="*" Header="SUBJECT">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <StackPanel Orientation="Horizontal">
+                    <Button Classes="icon_button" IsVisible="{Binding Action, Converter={x:Static c:InteractiveRebaseActionConverters.CanEditMessage}}">
+                      <Button.Flyout>
+                        <Flyout Placement="BottomEdgeAlignedLeft">
+                          <Panel Width="600" Height="200">
+                            <TextBox Grid.Row="0"
+                                     CornerRadius="2"
+                                     AcceptsReturn="True"
+                                     VerticalContentAlignment="Top"
+                                     Text="{Binding FullMessage, Mode=TwoWay}"
+                                     v:AutoFocusBehaviour.IsEnabled="True"/>
+                          </Panel>
+                        </Flyout>
+                      </Button.Flyout>
+                      <Path Width="14" Height="14" Margin="0,4,0,0" Data="{StaticResource Icons.Edit}"/>
+                    </Button>
+                    <TextBlock Classes="monospace" Text="{Binding Subject}" Margin="8,0,0,0"/>
+                  </StackPanel>                  
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn Header="AVATAR">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <v:Avatar Width="16" Height="16"
+                            Margin="16,0,8,0"
+                            VerticalAlignment="Center"
+                            IsHitTestVisible="False"
+                            User="{Binding Commit.Author}"/>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn MaxWidth="100" Header="AUTHOR">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <TextBlock Classes="monospace" Text="{Binding Commit.Author.Name}" Margin="0,0,8,0"/>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn Header="SHA">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <TextBlock Classes="monospace"
+                             Text="{Binding Commit.SHA, Converter={x:Static c:StringConverters.ToShortSHA}}"
+                             Margin="12,0"/>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn Header="TIME">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <TextBlock Classes="monospace" Text="{Binding Commit.CommitterTimeStr}" Margin="8,0"/>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn Width="32" Header="MOVE UP">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <Button Classes="icon_button" Click="OnMoveItemUp" ToolTip.Tip="{DynamicResource Text.InteractiveRebase.MoveUp}">
+                    <Path Width="14" Height="14" Margin="0,4,0,0" Data="{StaticResource Icons.Up}"/>
+                  </Button>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+
+            <DataGridTemplateColumn Width="32" Header="MOVE DOWN">
+              <DataGridTemplateColumn.CellTemplate>
+                <DataTemplate x:DataType="{x:Type vm:InteractiveRebaseItem}">
+                  <Button Classes="icon_button" Click="OnMoveItemDown" ToolTip.Tip="{DynamicResource Text.InteractiveRebase.MoveDown}">
+                    <Path Width="14" Height="14" Margin="0,4,0,0" Data="{StaticResource Icons.Down}"/>
+                  </Button>
+                </DataTemplate>
+              </DataGridTemplateColumn.CellTemplate>
+            </DataGridTemplateColumn>
+          </DataGrid.Columns>
+        </DataGrid>
+
+        <v:LoadingIcon Grid.Row="0" Width="48" Height="48" HorizontalAlignment="Center" VerticalAlignment="Center" IsVisible="{Binding IsLoading}"/>
+
+        <GridSplitter Grid.Row="1"
+                      MinHeight="1"
+                      HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
+                      Background="Transparent"/>
+
+        <Border Grid.Row="2" Background="{DynamicResource Brush.Window}">
+          <Path Width="128" Height="128"
+                Data="{StaticResource Icons.Detail}"
+                HorizontalAlignment="Center"
+                Fill="{DynamicResource Brush.FG2}"/>
+        </Border>
+
+        <Grid Grid.Row="2" IsVisible="{Binding SelectedItem, Converter={x:Static ObjectConverters.IsNotNull}}">
+          <ContentControl Content="{Binding DetailContext}">
+            <ContentControl.DataTemplates>
+              <DataTemplate DataType="vm:CommitDetail">
+                <v:CommitDetail/>
+              </DataTemplate>
+            </ContentControl.DataTemplates>
+          </ContentControl>
+        </Grid>
+      </Grid>
+    </Border>
+
+    <!-- Options -->
+    <Grid Grid.Row="3" ColumnDefinitions="*,Auto,Auto" Margin="8,0,8,8">
+      <ProgressBar x:Name="Running" 
+                   Grid.Column="0" 
+                   Margin="0,0,32,0" 
+                   Background="{DynamicResource Brush.FG2}" 
+                   Foreground="{DynamicResource Brush.Accent}" 
+                   Minimum="0" 
+                   Maximum="100"
+                   IsVisible="False"/>
+      <Button Grid.Column="1" Classes="flat primary" MinWidth="80" Content="{DynamicResource Text.Start}" Click="StartJobs"/>
+      <Button Grid.Column="2" Classes="flat" MinWidth="80" Content="{DynamicResource Text.Cancel}" Click="CloseWindow"/>
+    </Grid>
+  </Grid>
+</v:ChromelessWindow>

src/Views/InteractiveRebase.axaml.cs

@@ -0,0 +1,79 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+
+namespace SourceGit.Views
+{
+    public partial class InteractiveRebase : ChromelessWindow
+    {
+        public InteractiveRebase()
+        {
+            InitializeComponent();
+        }
+
+        private void BeginMoveWindow(object sender, PointerPressedEventArgs e)
+        {
+            BeginMoveDrag(e);
+        }
+
+        private void CloseWindow(object sender, RoutedEventArgs e)
+        {
+            Close();
+        }
+
+        private void OnMoveItemUp(object sender, RoutedEventArgs e) 
+        {
+            if (sender is Control control && DataContext is ViewModels.InteractiveRebase vm)
+            {
+                vm.MoveItemUp(control.DataContext as ViewModels.InteractiveRebaseItem);
+                e.Handled = true;
+            }
+        }
+
+        private void OnMoveItemDown(object sender, RoutedEventArgs e)
+        {
+            if (sender is Control control && DataContext is ViewModels.InteractiveRebase vm)
+            {
+                vm.MoveItemDown(control.DataContext as ViewModels.InteractiveRebaseItem);
+                e.Handled = true;
+            }
+        }
+
+        private void OnDataGridKeyDown(object sender, KeyEventArgs e) 
+        {
+            var datagrid = sender as DataGrid;
+            var item = datagrid.SelectedItem as ViewModels.InteractiveRebaseItem;
+            if (item == null)
+                return;
+
+            var vm = DataContext as ViewModels.InteractiveRebase;
+            if (e.Key == Key.P)
+                item.SetAction(Models.InteractiveRebaseAction.Pick);
+            else if (e.Key == Key.E)
+                item.SetAction(Models.InteractiveRebaseAction.Edit);
+            else if (e.Key == Key.R)
+                item.SetAction(Models.InteractiveRebaseAction.Reword);
+            else if (e.Key == Key.S)
+                item.SetAction(Models.InteractiveRebaseAction.Squash);
+            else if (e.Key == Key.F)
+                item.SetAction(Models.InteractiveRebaseAction.Fixup);
+            else if (e.Key == Key.D)
+                item.SetAction(Models.InteractiveRebaseAction.Drop);
+            else if (e.Key == Key.Up && e.KeyModifiers == KeyModifiers.Alt)
+                vm.MoveItemUp(item);
+            else if (e.Key == Key.Down && e.KeyModifiers == KeyModifiers.Alt)
+                vm.MoveItemDown(item);
+        }
+
+        private async void StartJobs(object sender, RoutedEventArgs e)
+        {
+            Running.IsVisible = true;
+            Running.IsIndeterminate = true;
+            var vm = DataContext as ViewModels.InteractiveRebase;
+            await vm.Start();
+            Running.IsIndeterminate = false;
+            Running.IsVisible = false;
+            Close();
+        }
+    }
+}

src/Views/Reword.axaml

@@ -33,7 +33,7 @@
                AcceptsReturn="True"
                VerticalContentAlignment="Top"
                Text="{Binding Message, Mode=TwoWay}"
-               v:AutoFocusBehaviour.IsEnabled="True"/>  
+               v:AutoFocusBehaviour.IsEnabled="True"/>
     </Grid>
   </StackPanel>
 </UserControl>