refactor<*>: rewrite all with AvaloniaUI

.gitignore

@@ -3,5 +3,4 @@
 .vscode
 bin
 obj
-publish
 *.user

README.md

@@ -1,11 +1,10 @@
 # SourceGit
 
-Opensouce Git GUI client for Windows.
+Opensouce Git GUI client.
 
 ## High-lights
 
 * Opensource/Free
-* Light-weight
 * Fast
 * English/简体中文
 * Build-in light/dark themes
@@ -29,8 +28,6 @@ Opensouce Git GUI client for Windows.
 
 Pre-build Binaries：[Releases](https://github.com/sourcegit-scm/sourcegit/releases)
 
-> NOTE: You need install Git first.
-
 ## Screen Shots
 
 * Drak Theme

src/App.axaml

@@ -0,0 +1,25 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="SourceGit.App"
+             Name="SourceGit"
+             RequestedThemeVariant="Dark">
+  <Application.Resources>
+    <ResourceDictionary>
+      <ResourceDictionary.MergedDictionaries>
+        <ResourceInclude Source="/Resources/Fonts.axaml"/>
+        <ResourceInclude Source="/Resources/Icons.axaml"/>
+        <ResourceInclude Source="/Resources/Themes.axaml"/>
+      </ResourceDictionary.MergedDictionaries>
+
+      <ResourceInclude x:Key="en_US" Source="/Resources/Locales/en_US.axaml"/>
+      <ResourceInclude x:Key="zh_CN" Source="/Resources/Locales/zh_CN.axaml"/>
+    </ResourceDictionary>
+  </Application.Resources>
+
+  <Application.Styles>
+    <FluentTheme />
+    <StyleInclude Source="avares://Avalonia.Controls.DataGrid/Themes/Fluent.xaml"/>
+    <StyleInclude Source="avares://AvaloniaEdit/Themes/Fluent/AvaloniaEdit.xaml" />
+    <StyleInclude Source="/Resources/Styles.axaml"/>
+  </Application.Styles>
+</Application>

src/App.axaml.cs

@@ -0,0 +1,158 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Data.Core.Plugins;
+using Avalonia.Markup.Xaml;
+using Avalonia.Media;
+using Avalonia.Styling;
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Reflection;
+using System.Text;
+
+namespace SourceGit {
+    public partial class App : Application {
+
+        [STAThread]
+        public static void Main(string[] args) {
+            try {
+                BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+            } catch (Exception ex) {
+                var builder = new StringBuilder();
+                builder.Append("Crash: ");
+                builder.Append(ex.Message);
+                builder.Append("\n\n");
+                builder.Append("----------------------------\n");
+                builder.Append($"Version: {Assembly.GetExecutingAssembly().GetName().Version}\n");
+                builder.Append($"OS: {Environment.OSVersion.ToString()}\n");
+                builder.Append($"Framework: {AppDomain.CurrentDomain.SetupInformation.TargetFrameworkName}\n");
+                builder.Append($"Source: {ex.Source}\n");
+                builder.Append($"---------------------------\n\n");
+                builder.Append(ex.StackTrace);
+
+                var time = DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss");
+                var file = Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName);
+                file = Path.Combine(file, $"crash_{time}.log");
+                File.WriteAllText(file, builder.ToString());
+            } 
+        }
+
+        public static AppBuilder BuildAvaloniaApp() {
+            var builder = AppBuilder.Configure<App>();
+            builder.UsePlatformDetect();
+
+            if (OperatingSystem.IsWindows()) {
+                builder.With(new FontManagerOptions() {
+                    FontFallbacks = [
+                        new FontFallback { FontFamily = new FontFamily("Microsoft YaHei UI") }
+                    ]
+                });
+            } else if (OperatingSystem.IsMacOS()) {
+                builder.With(new FontManagerOptions() {
+                    FontFallbacks = [
+                        new FontFallback { FontFamily = new FontFamily("PingFang SC") }
+                    ]
+                });
+                builder.With(new MacOSPlatformOptions() {
+                    DisableDefaultApplicationMenuItems = true,
+                    DisableNativeMenus = true,
+                });
+            }
+            
+            builder.LogToTrace();
+            return builder;
+        }
+
+        public static void RaiseException(string context, string message) {
+            if (Current is App app && app._notificationReceiver != null) {
+                var ctx = context.Replace('\\', '/');
+                var notice = new Models.Notification() { IsError = true, Message = message };
+                app._notificationReceiver.OnReceiveNotification(ctx, notice);
+            }
+        }
+
+        public static void SendNotification(string context, string message) {
+            if (Current is App app && app._notificationReceiver != null) {
+                var ctx = context.Replace('\\', '/');
+                var notice = new Models.Notification() { IsError = false, Message = message };
+                app._notificationReceiver.OnReceiveNotification(ctx, notice);
+            }
+        }
+
+        public static void SetLocale(string localeKey) {
+            var app = Current as App;
+            var targetLocale = app.Resources[localeKey] as ResourceDictionary;
+            if (targetLocale == null || targetLocale == app._activeLocale) {
+                return;
+            }
+
+            if (app._activeLocale != null) {
+                app.Resources.MergedDictionaries.Remove(app._activeLocale);
+            }
+
+            app.Resources.MergedDictionaries.Add(targetLocale);
+            app._activeLocale = targetLocale;
+        }
+
+        public static void SetTheme(string theme) {
+            if (theme.Equals("Light", StringComparison.OrdinalIgnoreCase)) {
+                App.Current.RequestedThemeVariant = ThemeVariant.Light;
+            } else if (theme.Equals("Dark", StringComparison.OrdinalIgnoreCase)) {
+                App.Current.RequestedThemeVariant = ThemeVariant.Dark;
+            } else {
+                App.Current.RequestedThemeVariant = ThemeVariant.Default;
+            }
+        }
+
+        public static async void CopyText(string data) {
+            if (Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
+                if (desktop.MainWindow.Clipboard is { } clipbord) {
+                    await clipbord.SetTextAsync(data);
+                }
+            }
+        }
+
+        public static string Text(string key, params object[] args) {
+            var fmt = Current.FindResource($"Text.{key}") as string;
+            if (string.IsNullOrWhiteSpace(fmt)) return $"Text.{key}";
+            return string.Format(fmt, args);
+        }
+
+        public static TopLevel GetTopLevel() {
+            if (Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
+                return desktop.MainWindow;
+            }
+            return null;
+        }
+
+        public static void Quit() {
+            if (Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
+                desktop.MainWindow.Close();
+                desktop.Shutdown();
+            }
+        }
+
+        public override void Initialize() {
+            AvaloniaXamlLoader.Load(this);
+
+            SetLocale(ViewModels.Preference.Instance.Locale);
+            SetTheme(ViewModels.Preference.Instance.Theme);
+        }
+
+        public override void OnFrameworkInitializationCompleted() {
+            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop) {
+                BindingPlugins.DataValidators.RemoveAt(0);
+
+                var launcher = new Views.Launcher();
+                _notificationReceiver = launcher;
+                desktop.MainWindow = launcher;
+            }
+
+            base.OnFrameworkInitializationCompleted();
+        }
+
+        private ResourceDictionary _activeLocale = null;
+        private Models.INotificationReceiver _notificationReceiver = null;
+    }
+}

src/App.manifest

@@ -1,14 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
-    <dependency>
-        <dependentAssembly>
-            <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/>
-        </dependentAssembly>
-    </dependency>
-    <application xmlns="urn:schemas-microsoft-com:asm.v3">
-        <windowsSettings>
-            <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
-            <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>
-        </windowsSettings>
+  <!-- This manifest is used on Windows only.
+       Don't remove it as it might cause problems with window transparency and embeded controls.
+       For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
+  <assemblyIdentity version="1.0.0.0" name="SourceGit.Desktop"/>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on
+           and is designed to work with. Uncomment the appropriate elements
+           and Windows will automatically select the most compatible environment. -->
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
     </application>
+  </compatibility>
 </assembly>

src/App.xaml

@@ -1,15 +0,0 @@
-<Application x:Class="SourceGit.App"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    <Application.Resources>
-        <ResourceDictionary>
-            <ResourceDictionary.MergedDictionaries>
-                <ResourceDictionary Source="pack://application:,,,/Resources/Icons.xaml"/>
-                <ResourceDictionary Source="pack://application:,,,/Resources/Converters.xaml"/>
-                <ResourceDictionary Source="pack://application:,,,/Resources/Controls.xaml"/>
-                <ResourceDictionary Source="pack://application:,,,/Resources/Themes/Light.xaml"/>
-                <ResourceDictionary Source="pack://application:,,,/Resources/Locales/en_US.xaml"/>
-            </ResourceDictionary.MergedDictionaries>
-        </ResourceDictionary>
-    </Application.Resources>
-</Application>

src/App.xaml.cs

@@ -1,99 +0,0 @@
-using System;
-using System.IO;
-using System.Windows;
-
-namespace SourceGit {
-
-    /// <summary>
-    ///     程序入口.
-    /// </summary>
-    public partial class App : Application {
-        public static event Action<string, string> ExceptionRaised;
-
-        /// <summary>
-        ///     读取本地化字串
-        /// </summary>
-        /// <param name="key">本地化字串的Key</param>
-        /// <param name="args">可选格式化参数</param>
-        /// <returns>本地化字串</returns>
-        public static string Text(string key, params object[] args) {
-            var data = Current.FindResource($"Text.{key}") as string;
-            if (string.IsNullOrEmpty(data)) return $"Text.{key}";
-            return string.Format(data, args);
-        }
-
-        /// <summary>
-        ///     触发错误
-        /// </summary>
-        /// <param name="ctx">错误上下文</param>
-        /// <param name="detail">错误内容</param>
-        public static void Exception(string ctx, string detail) {
-            ExceptionRaised?.Invoke(ctx, detail);
-        }
-
-        /// <summary>
-        ///     启动.
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
-        protected override void OnStartup(StartupEventArgs e) {
-            base.OnStartup(e);
-
-            // 崩溃文件生成
-            AppDomain.CurrentDomain.UnhandledException += (_, ev) => Models.CrashInfo.Create(ev.ExceptionObject as Exception);
-
-            // 创建必要目录
-            if (!Directory.Exists(Views.Controls.Avatar.CACHE_PATH)) {
-                Directory.CreateDirectory(Views.Controls.Avatar.CACHE_PATH);
-            }
-
-            Models.Theme.Change();
-            Models.Locale.Change();
-
-            // 如果启动命令中指定了路径，打开指定目录的仓库
-            var launcher = new Views.Launcher();
-            if (Models.Preference.Instance.IsReady) {
-                if (e.Args.Length > 0) {
-                    var repo = Models.Preference.Instance.FindRepository(e.Args[0]);
-                    if (repo == null) {
-                        var path = new Commands.GetRepositoryRootPath(e.Args[0]).Result();
-                        if (path != null) {
-                            var gitDir = new Commands.QueryGitDir(path).Result();
-                            repo = Models.Preference.Instance.AddRepository(path, gitDir);
-                        }
-                    }
-
-                    if (repo != null) Models.Watcher.Open(repo);
-                } else if (Models.Preference.Instance.Restore.IsEnabled) {
-                    var restore = Models.Preference.Instance.Restore;
-                    var actived = null as Models.Repository;
-                    if (restore.Opened.Count > 0) {
-                        foreach (var path in restore.Opened) {
-                            if (!Directory.Exists(path)) continue;
-                            var repo = Models.Preference.Instance.FindRepository(path);
-                            if (repo != null) Models.Watcher.Open(repo);
-                            if (path == restore.Actived) actived = repo;
-                        }
-
-                        if (actived != null) Models.Watcher.Open(actived);
-                    }
-                }
-            }
-
-            // 主界面显示
-            MainWindow = launcher;
-            MainWindow.Show();
-        }
-
-        /// <summary>
-        ///     后台运行
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
-        protected override void OnDeactivated(EventArgs e) {
-            base.OnDeactivated(e);
-            GC.Collect();
-            Models.Preference.Save();
-        }
-    }
-}

src/Avalonia.Controls.DataGrid.patch

@@ -0,0 +1,81 @@
+diff --git a/src/Avalonia.Controls.DataGrid/DataGrid.cs b/src/Avalonia.Controls.DataGrid/DataGrid.cs
+index e4573c3759a8a1eeece45c8bacb4fa853201f8e7..aa29066173e03092b61477985aed73beb08ec8fc 100644
+--- a/src/Avalonia.Controls.DataGrid/DataGrid.cs
++++ b/src/Avalonia.Controls.DataGrid/DataGrid.cs
+@@ -716,6 +716,16 @@ public DataGridRowDetailsVisibilityMode RowDetailsVisibilityMode
+             set { SetValue(RowDetailsVisibilityModeProperty, value); }
+         }
+ 
++        public static readonly RoutedEvent<RoutedEventArgs> DisplayRegionChangedEvent = RoutedEvent.Register<DataGrid, RoutedEventArgs>(
++            nameof(DisplayRegionChanged),
++            RoutingStrategies.Bubble);
++
++        public event EventHandler<RoutedEventArgs> DisplayRegionChanged
++        {
++            add => AddHandler(DisplayRegionChangedEvent, value);
++            remove => RemoveHandler(DisplayRegionChangedEvent, value);
++        }
++
+         static DataGrid()
+         {
+             AffectsMeasure<DataGrid>(
+@@ -2428,6 +2438,11 @@ protected virtual void OnUnloadingRow(DataGridRowEventArgs e)
+             }
+         }
+ 
++        protected virtual void OnDisplayRegionChanged()
++        {
++            RaiseEvent(new RoutedEventArgs(DisplayRegionChangedEvent));
++        }
++
+         /// <summary>
+         /// Comparator class so we can sort list by the display index
+         /// </summary>
+@@ -3879,6 +3894,7 @@ private void InvalidateColumnHeadersMeasure()
+             {
+                 EnsureColumnHeadersVisibility();
+                 _columnHeadersPresenter.InvalidateMeasure();
++                OnDisplayRegionChanged();
+             }
+         }
+ 
+@@ -3903,6 +3919,8 @@ private void InvalidateRowsMeasure(bool invalidateIndividualElements)
+                         element.InvalidateMeasure();
+                     }
+                 }
++
++                OnDisplayRegionChanged();
+             }
+         }
+ 
+@@ -6211,5 +6229,30 @@ protected virtual void OnAutoGeneratingColumn(DataGridAutoGeneratingColumnEventA
+         {
+             AutoGeneratingColumn?.Invoke(this, e);
+         }
++
++        public Vector GetDisplayOffset()
++        {
++            // Has bug when using arrow keys via keyboard.
++            // return new Vector(_horizontalOffset, _verticalOffset);
++
++            double startX = 0;
++            double startY = 0;
++
++            foreach (var child in _rowsPresenter.Children)
++            {
++                var row = child as DataGridRow;
++                if (row.Slot >= 0 && row.Bounds.Top <= 0 && row.Bounds.Top > -RowHeight)
++                {
++                    var testY = RowHeight * row.Index - row.Bounds.Top;
++                    if (startY < testY)
++                    {
++                        startY = testY;
++                        startX = row.Bounds.Left;
++                    }
++                }
++            }
++
++            return new Vector(startX, startY);
++        }
+     }
+ }

src/BuildWindows.bat

@@ -0,0 +1 @@
+dotnet publish -c Release -r win-x64 -p:PublishAot=true -p:PublishTrimmed=true -p:TrimMode=link --self-contained

src/Commands/Add.cs

@@ -1,27 +1,24 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     `git add`命令
-    /// </summary>
     public class Add : Command {
-        public Add(string repo) {
-            Cwd = repo;
-            Args = "add .";
-        }
+        public Add(string repo, List<Models.Change> changes = null) {
+            WorkingDirectory = repo;
+            Context = repo;
 
-        public Add(string repo, List<string> paths) {
-            StringBuilder builder = new StringBuilder();
-            builder.Append("add --");
-            foreach (var p in paths) {
-                builder.Append(" \"");
-                builder.Append(p);
-                builder.Append("\"");
+            if (changes == null || changes.Count == 0) {
+                Args = "add .";
+            } else {
+                var builder = new StringBuilder();
+                builder.Append("add --");
+                foreach (var c in changes) {
+                    builder.Append(" \"");
+                    builder.Append(c.Path);
+                    builder.Append("\"");
+                }
+                Args = builder.ToString();
             }
-
-            Cwd = repo;
-            Args = builder.ToString();
         }
     }
 }

src/Commands/Apply.cs

@@ -1,11 +1,8 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     应用Patch
-    /// </summary>
+namespace SourceGit.Commands {
     public class Apply : Command {
-
         public Apply(string repo, string file, bool ignoreWhitespace, string whitespaceMode) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = "apply ";
             if (ignoreWhitespace) Args += "--ignore-whitespace ";
             else Args += $"--whitespace={whitespaceMode} ";

src/Commands/Archive.cs

@@ -1,22 +1,19 @@
-using System;
+using System;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     存档命令
-    /// </summary>
     public class Archive : Command {
-        private Action<string> handler;
-
-        public Archive(string repo, string revision, string to, Action<string> onProgress) {
-            Cwd = repo;
-            Args = $"archive --format=zip --verbose --output=\"{to}\" {revision}";
+        public Archive(string repo, string revision, string saveTo, Action<string> outputHandler) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"archive --format=zip --verbose --output=\"{saveTo}\" {revision}";
             TraitErrorAsOutput = true;
-            handler = onProgress;
+            _outputHandler = outputHandler;
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
+
+        private Action<string> _outputHandler;
     }
 }

src/Commands/AssumeUnchanged.cs

@@ -2,59 +2,59 @@
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     查看、添加或移除忽略变更文件
-    /// </summary>
     public class AssumeUnchanged {
-        private string repo;
-
         class ViewCommand : Command {
             private static readonly Regex REG = new Regex(@"^(\w)\s+(.+)$");
-            private List<string> outs = new List<string>();
 
             public ViewCommand(string repo) {
-                Cwd = repo;
+                WorkingDirectory = repo;
                 Args = "ls-files -v";
+                RaiseError = false;
             }
 
             public List<string> Result() {
                 Exec();
-                return outs;
+                return _outs;
             }
 
-            public override void OnReadline(string line) {
+            protected override void OnReadline(string line) {
                 var match = REG.Match(line);
                 if (!match.Success) return;
 
                 if (match.Groups[1].Value == "h") {
-                    outs.Add(match.Groups[2].Value);
+                    _outs.Add(match.Groups[2].Value);
                 }
             }
+
+            private List<string> _outs = new List<string>();
         }
 
         class ModCommand : Command {
             public ModCommand(string repo, string file, bool bAdd) {
                 var mode = bAdd ? "--assume-unchanged" : "--no-assume-unchanged";
 
-                Cwd = repo;
+                WorkingDirectory = repo;
+                Context = repo;
                 Args = $"update-index {mode} -- \"{file}\"";
             }
         }
 
         public AssumeUnchanged(string repo) {
-            this.repo = repo;
+            _repo = repo;
         }
 
         public List<string> View() {
-            return new ViewCommand(repo).Result();
+            return new ViewCommand(_repo).Result();
         }
 
         public void Add(string file) {
-            new ModCommand(repo, file, true).Exec();
+            new ModCommand(_repo, file, true).Exec();
         }
 
         public void Remove(string file) {
-            new ModCommand(repo, file, false).Exec();
+            new ModCommand(_repo, file, false).Exec();
         }
+
+        private string _repo;
     }
 }

src/Commands/Blame.cs

@@ -1,77 +1,90 @@
-using System;
-using System.Collections.Generic;
+using System;
+using System.IO;
+using System.Text;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     逐行追溯
-    /// </summary>
     public class Blame : Command {
         private static readonly Regex REG_FORMAT = new Regex(@"^\^?([0-9a-f]+)\s+.*\((.*)\s+(\d+)\s+[\-\+]?\d+\s+\d+\) (.*)");
         private static readonly DateTime UTC_START = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).ToLocalTime();
 
-        private Data data = new Data();
-        private bool needUnifyCommitSHA = false;
-        private int minSHALen = 0;
-
-        public class Data {
-            public List<Models.BlameLine> Lines = new List<Models.BlameLine>();
-            public bool IsBinary = false;
-        }
-
         public Blame(string repo, string file, string revision) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = $"blame -t {revision} -- \"{file}\"";
+            RaiseError = false;
+
+            _result.File = file;
         }
 
-        public Data Result() {
-            Exec();
+        public Models.BlameData Result() {
+            var succ = Exec();
+            if (!succ) {
+                return new Models.BlameData();
+            }
 
-            if (needUnifyCommitSHA) {
-                foreach (var line in data.Lines) {
-                    if (line.CommitSHA.Length > minSHALen) {
-                        line.CommitSHA = line.CommitSHA.Substring(0, minSHALen);
+            if (_needUnifyCommitSHA) {
+                foreach (var line in _result.LineInfos) {
+                    if (line.CommitSHA.Length > _minSHALen) {
+                        line.CommitSHA = line.CommitSHA.Substring(0, _minSHALen);
                     }
                 }
             }
 
-            return data;
+            _result.Content = _content.ToString();
+            return _result;
         }
 
-        public override void OnReadline(string line) {
-            if (data.IsBinary) return;
+        protected override void OnReadline(string line) {
+            if (_result.IsBinary) return;
             if (string.IsNullOrEmpty(line)) return;
 
             if (line.IndexOf('\0') >= 0) {
-                data.IsBinary = true;
-                data.Lines.Clear();
+                _result.IsBinary = true;
+                _result.LineInfos.Clear();
                 return;
             }
 
             var match = REG_FORMAT.Match(line);
             if (!match.Success) return;
 
+            _content.AppendLine(match.Groups[4].Value);
+
             var commit = match.Groups[1].Value;
-            var author = match.Groups[2].Value;
-            var timestamp = int.Parse(match.Groups[3].Value);
-            var content = match.Groups[4].Value;
-            var when = UTC_START.AddSeconds(timestamp).ToString("yyyy/MM/dd");
+            if (commit == _lastSHA) {
+                var info = new Models.BlameLineInfo() {
+                    CommitSHA = commit,
+                    Author = string.Empty,
+                    Time = string.Empty,
+                };
 
-            var blameLine = new Models.BlameLine() {
-                LineNumber = $"{data.Lines.Count + 1}",
-                CommitSHA = commit,
-                Author = author,
-                Time = when,
-                Content = content,
-            };
+                _result.LineInfos.Add(info);
+            } else {
+                var author = match.Groups[2].Value;
+                var timestamp = int.Parse(match.Groups[3].Value);
+                var when = UTC_START.AddSeconds(timestamp).ToString("yyyy/MM/dd");
 
-            if (line[0] == '^') {
-                needUnifyCommitSHA = true;
-                if (minSHALen == 0) minSHALen = commit.Length;
-                else if (commit.Length < minSHALen) minSHALen = commit.Length;
+                var blameLine = new Models.BlameLineInfo() {
+                    IsFirstInGroup = true,
+                    CommitSHA = commit,
+                    Author = author,
+                    Time = when,
+                };
+
+                _lastSHA = commit;
+                _result.LineInfos.Add(blameLine);
             }
 
-            data.Lines.Add(blameLine);
+            if (line[0] == '^') {
+                _needUnifyCommitSHA = true;
+                _minSHALen = Math.Min(_minSHALen, commit.Length);
+            }            
         }
+
+        private Models.BlameData _result = new Models.BlameData();
+        private StringBuilder _content = new StringBuilder();
+        private string _lastSHA = string.Empty;
+        private bool _needUnifyCommitSHA = false;
+        private int _minSHALen = 64;
     }
 }

src/Commands/Branch.cs

@@ -1,38 +1,39 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     分支相关操作
-    /// </summary>
-    class Branch : Command {
-        private string target = null;
-
-        public Branch(string repo, string branch) {
-            Cwd = repo;
-            target = branch;
+namespace SourceGit.Commands {
+    public static class Branch {
+        public static bool Create(string repo, string name, string basedOn) {
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.Context = repo;
+            cmd.Args = $"branch {name} {basedOn}";
+            return cmd.Exec();
         }
 
-        public void Create(string basedOn) {
-            Args = $"branch {target} {basedOn}";
-            Exec();
+        public static bool Rename(string repo, string name, string to) {
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.Context = repo;
+            cmd.Args = $"branch -M {name} {to}";
+            return cmd.Exec();
         }
 
-        public void Rename(string to) {
-            Args = $"branch -M {target} {to}";
-            Exec();
-        }
-
-        public void SetUpstream(string upstream) {
-            Args = $"branch {target} ";
+        public static bool SetUpstream(string repo, string name, string upstream) {
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.Context = repo;
             if (string.IsNullOrEmpty(upstream)) {
-                Args += "--unset-upstream";
+                cmd.Args = $"branch {name} --unset-upstream";
             } else {
-                Args += $"-u {upstream}";
+                cmd.Args = $"branch {name} -u {upstream}";
             }
-            Exec();
+            return cmd.Exec();
         }
 
-        public void Delete() {
-            Args = $"branch -D {target}";
-            Exec();
+        public static bool Delete(string repo, string name) {
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.Context = repo;
+            cmd.Args = $"branch -D {name}";
+            return cmd.Exec();
         }
     }
 }

src/Commands/Checkout.cs

@@ -1,29 +1,25 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Text;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     检出
-    /// </summary>
     public class Checkout : Command {
-        private Action<string> handler = null;
-
         public Checkout(string repo) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
         }
 
         public bool Branch(string branch, Action<string> onProgress) {
             Args = $"checkout --progress {branch}";
             TraitErrorAsOutput = true;
-            handler = onProgress;
+            _outputHandler = onProgress;
             return Exec();
         }
 
         public bool Branch(string branch, string basedOn, Action<string> onProgress) {
             Args = $"checkout --progress -b {branch} {basedOn}";
             TraitErrorAsOutput = true;
-            handler = onProgress;
+            _outputHandler = onProgress;
             return Exec();
         }
 
@@ -54,8 +50,10 @@ namespace SourceGit.Commands {
             return Exec();
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
+
+        private Action<string> _outputHandler;
     }
 }

src/Commands/CherryPick.cs

@@ -1,12 +1,9 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     遴选命令
-    /// </summary>
+namespace SourceGit.Commands {
     public class CherryPick : Command {
-
         public CherryPick(string repo, string commit, bool noCommit) {
             var mode = noCommit ? "-n" : "--ff";
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = $"cherry-pick {mode} {commit}";
         }
     }

src/Commands/Clean.cs

@@ -1,14 +1,11 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     清理指令
-    /// </summary>
     public class Clean : Command {
-
         public Clean(string repo) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = "clean -qfd";
         }
 
@@ -21,7 +18,8 @@ namespace SourceGit.Commands {
                 builder.Append("\"");
             }
 
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = builder.ToString();
         }
     }

src/Commands/Clone.cs

@@ -1,24 +1,18 @@
-using System;
+using System;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     克隆
-    /// </summary>
     public class Clone : Command {
-        private Action<string> handler = null;
-        private Action<string> onError = null;
+        private Action<string> _notifyProgress;
 
-        public Clone(string path, string url, string localName, string sshKey, string extraArgs, Action<string> outputHandler, Action<string> errHandler) {
-            Cwd = path;
+        public Clone(string ctx, string path, string url, string localName, string sshKey, string extraArgs, Action<string> ouputHandler) {
+            Context = ctx;
+            WorkingDirectory = path;
             TraitErrorAsOutput = true;
-            handler = outputHandler;
-            onError = errHandler;
 
             if (string.IsNullOrEmpty(sshKey)) {
-                Args = $"-c core.sshCommand=\"ssh -i '{sshKey}'\" ";
-            } else {
                 Args = "-c credential.helper=manager ";
+            } else {
+                Args = $"-c core.sshCommand=\"ssh -i '{sshKey}'\" ";
             }
 
             Args += "clone --progress --verbose --recurse-submodules ";
@@ -26,14 +20,12 @@ namespace SourceGit.Commands {
             if (!string.IsNullOrEmpty(extraArgs)) Args += $"{extraArgs} ";
             Args += $"{url} ";
             if (!string.IsNullOrEmpty(localName)) Args += localName;
+
+            _notifyProgress = ouputHandler;
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
-        }
-
-        public override void OnException(string message) {
-            onError?.Invoke(message);
+        protected override void OnReadline(string line) {
+            _notifyProgress?.Invoke(line);
         }
     }
 }

src/Commands/Command.cs

@@ -1,3 +1,4 @@
+using Avalonia.Threading;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -5,60 +6,27 @@ using System.Text;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     用于取消命令执行的上下文对象
-    /// </summary>
-    public class Context {
-        public bool IsCancelRequested { get; set; } = false;
-    }
-
-    /// <summary>
-    ///     命令接口
-    /// </summary>
     public class Command {
-        private static readonly Regex PROGRESS_REG = new Regex(@"\d+%");
-
-        /// <summary>
-        ///     读取全部输出时的结果
-        /// </summary>
-        public class ReadToEndResult {
-            public bool IsSuccess { get; set; }
-            public string Output { get; set; }
-            public string Error { get; set; }
+        public class CancelToken {
+            public bool Requested { get; set; } = false;
         }
 
-        /// <summary>
-        ///     上下文
-        /// </summary>
-        public Context Ctx { get; set; } = null;
+        public class ReadToEndResult {
+            public bool IsSuccess { get; set; }
+            public string StdOut { get; set; }
+            public string StdErr { get; set; }
+        }
 
-        /// <summary>
-        ///     运行路径
-        /// </summary>
-        public string Cwd { get; set; } = "";
-
-        /// <summary>
-        ///     参数
-        /// </summary>
-        public string Args { get; set; } = "";
-
-        /// <summary>
-        ///     是否忽略错误
-        /// </summary>
-        public bool DontRaiseError { get; set; } = false;
-
-        /// <summary>
-        ///     使用标准错误输出
-        /// </summary>
+        public string Context { get; set; } = string.Empty;
+        public CancelToken Cancel { get; set; } = null;
+        public string WorkingDirectory { get; set; } = null;
+        public string Args { get; set; } = string.Empty;
+        public bool RaiseError { get; set; } = true;
         public bool TraitErrorAsOutput { get; set; } = false;
 
-        /// <summary>
-        ///     运行
-        /// </summary>
         public bool Exec() {
             var start = new ProcessStartInfo();
-            start.FileName = Models.Preference.Instance.Git.Path;
+            start.FileName = Native.OS.GitExecutableFile;
             start.Arguments = "--no-pager -c core.quotepath=off " + Args;
             start.UseShellExecute = false;
             start.CreateNoWindow = true;
@@ -67,49 +35,53 @@ namespace SourceGit.Commands {
             start.StandardOutputEncoding = Encoding.UTF8;
             start.StandardErrorEncoding = Encoding.UTF8;
 
-            if (!string.IsNullOrEmpty(Cwd)) start.WorkingDirectory = Cwd;
+            if (!string.IsNullOrEmpty(WorkingDirectory)) start.WorkingDirectory = WorkingDirectory;
 
             var errs = new List<string>();
             var proc = new Process() { StartInfo = start };
             var isCancelled = false;
 
-            proc.OutputDataReceived += (o, e) => {
-                if (Ctx != null && Ctx.IsCancelRequested) {
+            proc.OutputDataReceived += (_, e) => {
+                if (Cancel != null && Cancel.Requested) {
                     isCancelled = true;
                     proc.CancelErrorRead();
                     proc.CancelOutputRead();
-                    if (!proc.HasExited) proc.Kill();
+                    if (!proc.HasExited) proc.Kill(true);
                     return;
                 }
 
-                if (e.Data == null) return;
-                OnReadline(e.Data);
+                if (e.Data != null) OnReadline(e.Data);
             };
-            proc.ErrorDataReceived += (o, e) => {
-                if (Ctx != null && Ctx.IsCancelRequested) {
+
+            proc.ErrorDataReceived += (_, e) => {
+                if (Cancel != null && Cancel.Requested) {
                     isCancelled = true;
                     proc.CancelErrorRead();
                     proc.CancelOutputRead();
-                    if (!proc.HasExited) proc.Kill();
+                    if (!proc.HasExited) proc.Kill(true);
                     return;
                 }
 
                 if (string.IsNullOrEmpty(e.Data)) return;
                 if (TraitErrorAsOutput) OnReadline(e.Data);
 
-                // 错误信息中忽略进度相关的输出
+                // Ignore progress messages
                 if (e.Data.StartsWith("remote: Enumerating objects:", StringComparison.Ordinal)) return;
                 if (e.Data.StartsWith("remote: Counting objects:", StringComparison.Ordinal)) return;
                 if (e.Data.StartsWith("remote: Compressing objects:", StringComparison.Ordinal)) return;
                 if (e.Data.StartsWith("Filtering content:", StringComparison.Ordinal)) return;
-                if (PROGRESS_REG.IsMatch(e.Data)) return;
+                if (_progressRegex.IsMatch(e.Data)) return;
                 errs.Add(e.Data);
             };
 
             try {
                 proc.Start();
             } catch (Exception e) {
-                if (!DontRaiseError) OnException(e.Message);
+                if (RaiseError) {
+                    Dispatcher.UIThread.Invoke(() => {
+                        App.RaiseException(Context, e.Message);
+                    });
+                }
                 return false;
             }
 
@@ -121,19 +93,20 @@ namespace SourceGit.Commands {
             proc.Close();
 
             if (!isCancelled && exitCode != 0 && errs.Count > 0) {
-                if (!DontRaiseError) OnException(string.Join("\n", errs));
+                if (RaiseError) {
+                    Dispatcher.UIThread.Invoke(() => {
+                        App.RaiseException(Context, string.Join("\n", errs));
+                    });
+                }
                 return false;
             } else {
                 return true;
             }
         }
 
-        /// <summary>
-        ///     直接读取全部标准输出
-        /// </summary>
         public ReadToEndResult ReadToEnd() {
             var start = new ProcessStartInfo();
-            start.FileName = Models.Preference.Instance.Git.Path;
+            start.FileName = Native.OS.GitExecutableFile;
             start.Arguments = "--no-pager -c core.quotepath=off " + Args;
             start.UseShellExecute = false;
             start.CreateNoWindow = true;
@@ -142,22 +115,23 @@ namespace SourceGit.Commands {
             start.StandardOutputEncoding = Encoding.UTF8;
             start.StandardErrorEncoding = Encoding.UTF8;
 
-            if (!string.IsNullOrEmpty(Cwd)) start.WorkingDirectory = Cwd;
+            if (!string.IsNullOrEmpty(WorkingDirectory)) start.WorkingDirectory = WorkingDirectory;
 
             var proc = new Process() { StartInfo = start };
             try {
                 proc.Start();
             } catch (Exception e) {
                 return new ReadToEndResult() {
-                    Output = string.Empty,
-                    Error = e.Message,
                     IsSuccess = false,
+                    StdOut = string.Empty,
+                    StdErr = e.Message,
                 };
             }
 
-            var rs = new ReadToEndResult();
-            rs.Output = proc.StandardOutput.ReadToEnd();
-            rs.Error = proc.StandardError.ReadToEnd();
+            var rs = new ReadToEndResult() {
+                StdOut = proc.StandardOutput.ReadToEnd(),
+                StdErr = proc.StandardError.ReadToEnd(),
+            };
 
             proc.WaitForExit();
             rs.IsSuccess = proc.ExitCode == 0;
@@ -166,19 +140,8 @@ namespace SourceGit.Commands {
             return rs;
         }
 
-        /// <summary>
-        ///     调用Exec时的读取函数
-        /// </summary>
-        /// <param name="line"></param>
-        public virtual void OnReadline(string line) {
-        }
+        protected virtual void OnReadline(string line) { }
 
-        /// <summary>
-        ///     默认异常处理函数
-        /// </summary>
-        /// <param name="message"></param>
-        public virtual void OnException(string message) {
-            App.Exception(Cwd, message);
-        }
+        private static readonly Regex _progressRegex = new Regex(@"\d+%");
     }
-}
+}

src/Commands/Commit.cs

@@ -1,17 +1,16 @@
-using System.IO;
+using System.IO;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     `git commit`命令
-    /// </summary>
     public class Commit : Command {
-        public Commit(string repo, string message, bool amend) {
+        public Commit(string repo, string message, bool amend, bool allowEmpty = false) {
             var file = Path.GetTempFileName();
             File.WriteAllText(file, message);
 
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = $"commit --file=\"{file}\"";
             if (amend) Args += " --amend --no-edit";
+            if (allowEmpty) Args += " --allow-empty";
         }
     }
 }

src/Commands/CommitChanges.cs

@@ -1,39 +0,0 @@
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-
-namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     取得一个提交的变更列表
-    /// </summary>
-    public class CommitChanges : Command {
-        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
-        private List<Models.Change> changes = new List<Models.Change>();
-
-        public CommitChanges(string cwd, string commit) {
-            Cwd = cwd;
-            Args = $"show --name-status {commit}";
-        }
-
-        public List<Models.Change> Result() {
-            Exec();
-            return changes;
-        }
-
-        public override void OnReadline(string line) {
-            var match = REG_FORMAT.Match(line);
-            if (!match.Success) return;
-
-            var change = new Models.Change() { Path = match.Groups[2].Value };
-            var status = match.Groups[1].Value;
-
-            switch (status[0]) {
-            case 'M': change.Set(Models.Change.Status.Modified); changes.Add(change); break;
-            case 'A': change.Set(Models.Change.Status.Added); changes.Add(change); break;
-            case 'D': change.Set(Models.Change.Status.Deleted); changes.Add(change); break;
-            case 'R': change.Set(Models.Change.Status.Renamed); changes.Add(change); break;
-            case 'C': change.Set(Models.Change.Status.Copied); changes.Add(change); break;
-            }
-        }
-    }
-}

src/Commands/CommitRangeChanges.cs

@@ -1,39 +0,0 @@
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-
-namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     对比两个提交间的变更
-    /// </summary>
-    public class CommitRangeChanges : Command {
-        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
-        private List<Models.Change> changes = new List<Models.Change>();
-
-        public CommitRangeChanges(string cwd, string start, string end) {
-            Cwd = cwd;
-            Args = $"diff --name-status {start} {end}";
-        }
-
-        public List<Models.Change> Result() {
-            Exec();
-            return changes;
-        }
-
-        public override void OnReadline(string line) {
-            var match = REG_FORMAT.Match(line);
-            if (!match.Success) return;
-
-            var change = new Models.Change() { Path = match.Groups[2].Value };
-            var status = match.Groups[1].Value;
-
-            switch (status[0]) {
-            case 'M': change.Set(Models.Change.Status.Modified); changes.Add(change); break;
-            case 'A': change.Set(Models.Change.Status.Added); changes.Add(change); break;
-            case 'D': change.Set(Models.Change.Status.Deleted); changes.Add(change); break;
-            case 'R': change.Set(Models.Change.Status.Renamed); changes.Add(change); break;
-            case 'C': change.Set(Models.Change.Status.Copied); changes.Add(change); break;
-            }
-        }
-    }
-}

src/Commands/CompareRevisions.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class CompareRevisions : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
+
+        public CompareRevisions(string repo, string start, string end) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"diff --name-status {start} {end}";
+        }
+
+        public List<Models.Change> Result() {
+            Exec();
+            _changes.Sort((l, r) => l.Path.CompareTo(r.Path));
+            return _changes;
+        }
+
+        protected override void OnReadline(string line) {
+            var match = REG_FORMAT.Match(line);
+            if (!match.Success) return;
+
+            var change = new Models.Change() { Path = match.Groups[2].Value };
+            var status = match.Groups[1].Value;
+
+            switch (status[0]) {
+            case 'M': change.Set(Models.ChangeState.Modified); _changes.Add(change); break;
+            case 'A': change.Set(Models.ChangeState.Added); _changes.Add(change); break;
+            case 'D': change.Set(Models.ChangeState.Deleted); _changes.Add(change); break;
+            case 'R': change.Set(Models.ChangeState.Renamed); _changes.Add(change); break;
+            case 'C': change.Set(Models.ChangeState.Copied); _changes.Add(change); break;
+            }
+        }
+
+        private List<Models.Change> _changes = new List<Models.Change>();
+    }
+}

src/Commands/Config.cs

@@ -1,32 +1,55 @@
+using System;
+using System.Collections.Generic;
+
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     config命令
-    /// </summary>
-    public class Config : Command {
+    public class Config : Command {        
+        public Config(string repository) {
+            WorkingDirectory = repository;
+            Context = repository;
+            RaiseError = false;
+        }
 
-        public Config() { }
+        public Dictionary<string, string> ListAll() {
+            Args = "config -l";
 
-        public Config(string repo) {
-            Cwd = repo;
+            var output = ReadToEnd();
+            var rs = new Dictionary<string, string>();
+            if (output.IsSuccess) {
+                var lines = output.StdOut.Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
+                foreach (var line in lines) {
+                    var idx = line.IndexOf('=');
+                    if (idx != -1) {
+                        var key = line.Substring(0, idx).Trim();
+                        var val = line.Substring(idx+1).Trim();
+                        if (rs.ContainsKey(key)) {
+                            rs[key] = val;
+                        } else {
+                            rs.Add(key, val);
+                        }                        
+                    }
+                }
+            }
+
+            return rs;
         }
 
         public string Get(string key) {
             Args = $"config {key}";
-            return ReadToEnd().Output.Trim();
+            return ReadToEnd().StdOut.Trim();
         }
 
-        public bool Set(string key, string val, bool allowEmpty = false) {
-            if (!allowEmpty && string.IsNullOrEmpty(val)) {
-                if (string.IsNullOrEmpty(Cwd)) {
+        public bool Set(string key, string value, bool allowEmpty = false) {
+            if (!allowEmpty && string.IsNullOrWhiteSpace(value)) {
+                if (string.IsNullOrEmpty(WorkingDirectory)) {
                     Args = $"config --global --unset {key}";
                 } else {
                     Args = $"config --unset {key}";
                 }
             } else {
-                if (string.IsNullOrEmpty(Cwd)) {
-                    Args = $"config --global {key} \"{val}\"";
+                if (string.IsNullOrWhiteSpace(WorkingDirectory)) {
+                    Args = $"config --global {key} \"{value}\"";
                 } else {
-                    Args = $"config {key} \"{val}\"";
+                    Args = $"config {key} \"{value}\"";
                 }
             }
 

src/Commands/Diff.cs

@@ -1,111 +1,147 @@
-using System;
+using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     Diff命令（用于文件文件比对）
-    /// </summary>
     public class Diff : Command {
         private static readonly Regex REG_INDICATOR = new Regex(@"^@@ \-(\d+),?\d* \+(\d+),?\d* @@");
-        private Models.TextChanges changes = new Models.TextChanges();
-        private List<Models.TextChanges.Line> deleted = new List<Models.TextChanges.Line>();
-        private List<Models.TextChanges.Line> added = new List<Models.TextChanges.Line>();
-        private int oldLine = 0;
-        private int newLine = 0;
-        private int lineIndex = 0;
+        private static readonly string PREFIX_LFS = " version https://git-lfs.github.com/spec/";
 
-        public Diff(string repo, string args) {
-            Cwd = repo;
-            Args = $"diff --ignore-cr-at-eol --unified=4 {args}";
+        public Diff(string repo, Models.DiffOption opt) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"diff --ignore-cr-at-eol --unified=4 {opt}";
         }
 
-        public Models.TextChanges Result() {
+        public Models.DiffResult Result() {
             Exec();
-            ProcessChanges();
-            if (changes.IsBinary) changes.Lines.Clear();
-            lineIndex = 0;
-            return changes;
+
+            if (_result.IsBinary || _result.IsLFS) {
+                _result.TextDiff = null;
+            } else {
+                ProcessInlineHighlights();
+
+                if (_result.TextDiff.Lines.Count == 0) {
+                    _result.TextDiff = null;
+                } else {
+                    _result.TextDiff.MaxLineNumber = Math.Max(_newLine, _oldLine);
+                }                
+            }
+
+            return _result;
         }
 
-        public override void OnReadline(string line) {
-            if (changes.IsBinary) return;
+        protected override void OnReadline(string line) {
+            if (_result.IsBinary) return;
 
-            if (changes.Lines.Count == 0) {
+            if (_result.IsLFS) {
+                var ch = line[0];
+                if (ch == '-') {
+                    line = line.Substring(1);
+                    if (line.StartsWith("oid sha256:")) {
+                        _result.LFSDiff.Old.Oid = line.Substring(11);
+                    } else if (line.StartsWith("size ")) {
+                        _result.LFSDiff.Old.Size = long.Parse(line.Substring(5));
+                    }
+                } else if (ch == '+') {
+                    line = line.Substring(1);
+                    if (line.StartsWith("oid sha256:")) {
+                        _result.LFSDiff.New.Oid = line.Substring(11);
+                    } else if (line.StartsWith("size ")) {
+                        _result.LFSDiff.New.Size = long.Parse(line.Substring(5));
+                    }
+                } else if (line.StartsWith(" size ")) {
+                    _result.LFSDiff.New.Size = _result.LFSDiff.Old.Size = long.Parse(line.Substring(6));
+                }
+                return;
+            }
+
+            if (_result.TextDiff.Lines.Count == 0) {
                 var match = REG_INDICATOR.Match(line);
                 if (!match.Success) {
-                    if (line.StartsWith("Binary", StringComparison.Ordinal)) changes.IsBinary = true;
+                    if (line.StartsWith("Binary", StringComparison.Ordinal)) _result.IsBinary = true;
                     return;
                 }
 
-                oldLine = int.Parse(match.Groups[1].Value);
-                newLine = int.Parse(match.Groups[2].Value);
-                changes.Lines.Add(new Models.TextChanges.Line(lineIndex++, Models.TextChanges.LineMode.Indicator, line, "", ""));
+                _oldLine = int.Parse(match.Groups[1].Value);
+                _newLine = int.Parse(match.Groups[2].Value);
+                _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Indicator, line, "", ""));
             } else {
                 if (line.Length == 0) {
-                    ProcessChanges();
-                    changes.Lines.Add(new Models.TextChanges.Line(lineIndex++, Models.TextChanges.LineMode.Normal, "", $"{oldLine}", $"{newLine}"));
-                    oldLine++;
-                    newLine++;
+                    ProcessInlineHighlights();
+                    _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Normal, "", $"{_oldLine}", $"{_newLine}"));
+                    _oldLine++;
+                    _newLine++;
                     return;
                 }
 
                 var ch = line[0];
                 if (ch == '-') {
-                    deleted.Add(new Models.TextChanges.Line(lineIndex++, Models.TextChanges.LineMode.Deleted, line.Substring(1), $"{oldLine}", ""));
-                    oldLine++;
+                    _deleted.Add(new Models.TextDiffLine(Models.TextDiffLineType.Deleted, line.Substring(1), $"{_oldLine}", ""));
+                    _oldLine++;
                 } else if (ch == '+') {
-                    added.Add(new Models.TextChanges.Line(lineIndex++, Models.TextChanges.LineMode.Added, line.Substring(1), "", $"{newLine}"));
-                    newLine++;
+                    _added.Add(new Models.TextDiffLine(Models.TextDiffLineType.Added, line.Substring(1), "", $"{_newLine}"));
+                    _newLine++;
                 } else if (ch != '\\') {
-                    ProcessChanges();
+                    ProcessInlineHighlights();
                     var match = REG_INDICATOR.Match(line);
                     if (match.Success) {
-                        oldLine = int.Parse(match.Groups[1].Value);
-                        newLine = int.Parse(match.Groups[2].Value);
-                        changes.Lines.Add(new Models.TextChanges.Line(lineIndex++, Models.TextChanges.LineMode.Indicator, line, "", ""));
+                        _oldLine = int.Parse(match.Groups[1].Value);
+                        _newLine = int.Parse(match.Groups[2].Value);
+                        _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Indicator, line, "", ""));
                     } else {
-                        changes.Lines.Add(new Models.TextChanges.Line(lineIndex++, Models.TextChanges.LineMode.Normal, line.Substring(1), $"{oldLine}", $"{newLine}"));
-                        oldLine++;
-                        newLine++;
+                        if (line.StartsWith(PREFIX_LFS)) {
+                            _result.IsLFS = true;
+                            _result.LFSDiff = new Models.LFSDiff();
+                            return;
+                        }
+
+                        _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Normal, line.Substring(1), $"{_oldLine}", $"{_newLine}"));
+                        _oldLine++;
+                        _newLine++;
                     }
                 }
             }
         }
 
-        private void ProcessChanges() {
-            if (deleted.Any()) {
-                if (added.Count == deleted.Count) {
-                    for (int i = added.Count - 1; i >= 0; i--) {
-                        var left = deleted[i];
-                        var right = added[i];
+        private void ProcessInlineHighlights() {
+            if (_deleted.Count > 0) {
+                if (_added.Count == _deleted.Count) {
+                    for (int i = _added.Count - 1; i >= 0; i--) {
+                        var left = _deleted[i];
+                        var right = _added[i];
 
                         if (left.Content.Length > 1024 || right.Content.Length > 1024) continue;
 
-                        var chunks = Models.TextCompare.Process(left.Content, right.Content);
+                        var chunks = Models.TextInlineChange.Compare(left.Content, right.Content);
                         if (chunks.Count > 4) continue;
 
                         foreach (var chunk in chunks) {
                             if (chunk.DeletedCount > 0) {
-                                left.Highlights.Add(new Models.TextChanges.HighlightRange(chunk.DeletedStart, chunk.DeletedCount));
+                                left.Highlights.Add(new Models.TextInlineRange(chunk.DeletedStart, chunk.DeletedCount));
                             }
 
                             if (chunk.AddedCount > 0) {
-                                right.Highlights.Add(new Models.TextChanges.HighlightRange(chunk.AddedStart, chunk.AddedCount));
+                                right.Highlights.Add(new Models.TextInlineRange(chunk.AddedStart, chunk.AddedCount));
                             }
                         }
                     }
                 }
 
-                changes.Lines.AddRange(deleted);
-                deleted.Clear();
+                _result.TextDiff.Lines.AddRange(_deleted);
+                _deleted.Clear();
             }
 
-            if (added.Any()) {
-                changes.Lines.AddRange(added);
-                added.Clear();
+            if (_added.Count > 0) {
+                _result.TextDiff.Lines.AddRange(_added);
+                _added.Clear();
             }
         }
+
+        private Models.DiffResult _result = new Models.DiffResult() { TextDiff = new Models.TextDiff() };
+        private List<Models.TextDiffLine> _deleted = new List<Models.TextDiffLine>();
+        private List<Models.TextDiffLine> _added = new List<Models.TextDiffLine>();
+        private int _oldLine = 0;
+        private int _newLine = 0;
     }
 }

src/Commands/Discard.cs

@@ -1,28 +1,19 @@
-using System;
+using System;
 using System.Collections.Generic;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     忽略变更
-    /// </summary>
-    public class Discard {
-        private string repo = null;
-
-        public Discard(string repo) {
-            this.repo = repo;
-        }
-
-        public void Whole() {
+    public static class Discard {
+        public static void All(string repo) {
             new Reset(repo, "HEAD", "--hard").Exec();
             new Clean(repo).Exec();
         }
 
-        public void Changes(List<Models.Change> changes) {
+        public static void Changes(string repo, List<Models.Change> changes) {
             var needClean = new List<string>();
             var needCheckout = new List<string>();
 
             foreach (var c in changes) {
-                if (c.WorkTree == Models.Change.Status.Untracked || c.WorkTree == Models.Change.Status.Added) {
+                if (c.WorkTree == Models.ChangeState.Untracked || c.WorkTree == Models.ChangeState.Added) {
                     needClean.Add(c.Path);
                 } else {
                     needCheckout.Add(c.Path);

src/Commands/Fetch.cs

@@ -1,17 +1,11 @@
-using System;
-using System.Collections.Generic;
-using System.Threading;
+using System;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     拉取
-    /// </summary>
     public class Fetch : Command {
-        private Action<string> handler = null;
-
         public Fetch(string repo, string remote, bool prune, Action<string> outputHandler) {
-            Cwd = repo;
+            _outputHandler = outputHandler;
+            WorkingDirectory = repo;
+            Context = repo;
             TraitErrorAsOutput = true;
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
@@ -24,12 +18,12 @@ namespace SourceGit.Commands {
             Args += "fetch --progress --verbose ";
             if (prune) Args += "--prune ";
             Args += remote;
-            handler = outputHandler;
-            AutoFetch.MarkFetched(repo);
         }
 
         public Fetch(string repo, string remote, string localBranch, string remoteBranch, Action<string> outputHandler) {
-            Cwd = repo;
+            _outputHandler = outputHandler;
+            WorkingDirectory = repo;
+            Context = repo;
             TraitErrorAsOutput = true;
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
@@ -40,63 +34,12 @@ namespace SourceGit.Commands {
             }
 
             Args += $"fetch --progress --verbose {remote} {remoteBranch}:{localBranch}";
-            handler = outputHandler;
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
-        }
-    }
-
-    /// <summary>
-    ///     自动拉取（每隔10分钟）
-    /// </summary>
-    public class AutoFetch {
-        private static Dictionary<string, AutoFetch> jobs = new Dictionary<string, AutoFetch>();
-
-        private Fetch cmd = null;
-        private long nextFetchPoint = 0;
-        private Timer timer = null;
-
-        public static void Start(string repo) {
-            if (!Models.Preference.Instance.Git.AutoFetchRemotes) return;
-
-            // 只自动更新加入管理列表中的仓库（子模块等不自动更新）
-            var exists = Models.Preference.Instance.FindRepository(repo);
-            if (exists == null) return;
-
-            var job = new AutoFetch(repo);
-            jobs.Add(repo, job);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
 
-        public static void MarkFetched(string repo) {
-            if (!jobs.ContainsKey(repo)) return;
-            jobs[repo].nextFetchPoint = DateTime.Now.AddMinutes(10).ToFileTime();
-        }
-
-        public static void Stop(string repo) {
-            if (!jobs.ContainsKey(repo)) return;
-
-            jobs[repo].timer.Dispose();
-            jobs.Remove(repo);
-        }
-
-        public AutoFetch(string repo) {
-            cmd = new Fetch(repo, "--all", true, null);
-            cmd.DontRaiseError = true;
-
-            nextFetchPoint = DateTime.Now.AddMinutes(10).ToFileTime();
-            timer = new Timer(OnTick, null, 60000, 10000);
-        }
-
-        private void OnTick(object o) {
-            var now = DateTime.Now.ToFileTime();
-            if (nextFetchPoint > now) return;
-
-            Models.Watcher.SetEnabled(cmd.Cwd, false);
-            cmd.Exec();
-            nextFetchPoint = DateTime.Now.AddMinutes(10).ToFileTime();
-            Models.Watcher.SetEnabled(cmd.Cwd, true);
-        }
+        private Action<string> _outputHandler;
     }
 }

src/Commands/FormatPatch.cs

@@ -1,12 +1,9 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     将Commit另存为Patch文件
-    /// </summary>
+namespace SourceGit.Commands {
     public class FormatPatch : Command {
-
-        public FormatPatch(string repo, string commit, string path) {
-            Cwd = repo;
-            Args = $"format-patch {commit} -1 -o \"{path}\"";
+        public FormatPatch(string repo, string commit, string saveTo) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"format-patch {commit} -1 -o \"{saveTo}\"";
         }
     }
 }

src/Commands/GC.cs

@@ -1,21 +1,19 @@
 using System;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     GC
-    /// </summary>
     public class GC : Command {
-        private Action<string> handler;
-
-        public GC(string repo, Action<string> onProgress) {
-            Cwd = repo;
-            Args = "gc";
+        public GC(string repo, Action<string> outputHandler) {
+            _outputHandler = outputHandler;
+            WorkingDirectory = repo;
+            Context = repo;
             TraitErrorAsOutput = true;
-            handler = onProgress;
+            Args = "gc";
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
+
+        private Action<string> _outputHandler;
     }
 }

src/Commands/GetRepositoryRootPath.cs

@@ -1,17 +0,0 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     取得一个库的根路径
-    /// </summary>
-    public class GetRepositoryRootPath : Command {
-        public GetRepositoryRootPath(string path) {
-            Cwd = path;
-            Args = "rev-parse --show-toplevel";
-        }
-
-        public string Result() {
-            var rs = ReadToEnd().Output;
-            if (string.IsNullOrEmpty(rs)) return null;
-            return rs.Trim();
-        }
-    }
-}

src/Commands/GitFlow.cs

@@ -1,24 +1,22 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     Git-Flow命令
-    /// </summary>
-    public class GitFlow : Command {
+using System.Collections.Generic;
 
+namespace SourceGit.Commands {
+    public class GitFlow : Command {
         public GitFlow(string repo) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
         }
 
-        public bool Init(string master, string develop, string feature, string release, string hotfix, string version) {
-            var branches = new Branches(Cwd).Result();
+        public bool Init(List<Models.Branch> branches, string master, string develop, string feature, string release, string hotfix, string version) {
             var current = branches.Find(x => x.IsCurrent);
 
             var masterBranch = branches.Find(x => x.Name == master);
-            if (masterBranch == null && current != null) new Branch(Cwd, develop).Create(current.Head);
+            if (masterBranch == null && current != null) Branch.Create(WorkingDirectory, master, current.Head);
 
             var devBranch = branches.Find(x => x.Name == develop);
-            if (devBranch == null && current != null) new Branch(Cwd, develop).Create(current.Head);
+            if (devBranch == null && current != null) Branch.Create(WorkingDirectory, develop, current.Head);
 
-            var cmd = new Config(Cwd);
+            var cmd = new Config(WorkingDirectory);
             cmd.Set("gitflow.branch.master", master);
             cmd.Set("gitflow.branch.develop", develop);
             cmd.Set("gitflow.prefix.feature", feature);
@@ -32,7 +30,7 @@ namespace SourceGit.Commands {
             return Exec();
         }
 
-        public void Start(Models.GitFlowBranchType type, string name) {
+        public bool Start(Models.GitFlowBranchType type, string name) {
             switch (type) {
             case Models.GitFlowBranchType.Feature:
                 Args = $"flow feature start {name}";
@@ -44,13 +42,14 @@ namespace SourceGit.Commands {
                 Args = $"flow hotfix start {name}";
                 break;
             default:
-                return;
+                App.RaiseException(Context, "Bad branch type!!!");
+                return false;
             }
 
-            Exec();
+            return Exec();
         }
 
-        public void Finish(Models.GitFlowBranchType type, string name, bool keepBranch) {
+        public bool Finish(Models.GitFlowBranchType type, string name, bool keepBranch) {
             var option = keepBranch ? "-k" : string.Empty;
             switch (type) {
             case Models.GitFlowBranchType.Feature:
@@ -63,10 +62,11 @@ namespace SourceGit.Commands {
                 Args = $"flow hotfix finish {option} {name} -m \"HOTFIX_DONE\"";
                 break;
             default:
-                return;
+                App.RaiseException(Context, "Bad branch type!!!");
+                return false;
             }
 
-            Exec();
+            return Exec();
         }
     }
 }

src/Commands/Init.cs

@@ -1,12 +1,8 @@
-namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     初始化Git仓库
-    /// </summary>
+namespace SourceGit.Commands {
     public class Init : Command {
-
-        public Init(string workDir) {
-            Cwd = workDir;
+        public Init(string ctx, string dir) {
+            Context = ctx;
+            WorkingDirectory = dir;
             Args = "init -q";
         }
     }

src/Commands/IsBinary.cs

@@ -0,0 +1,18 @@
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class IsBinary : Command {
+        private static readonly Regex REG_TEST = new Regex(@"^\-\s+\-\s+.*$");
+
+        public IsBinary(string repo, string commit, string path) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"diff 4b825dc642cb6eb9a060e54bf8d69288fbee4904 {commit} --numstat -- \"{path}\"";
+            RaiseError = false;
+        }
+
+        public bool Result() {
+            return REG_TEST.IsMatch(ReadToEnd().StdOut);
+        }
+    }
+}

src/Commands/IsBinaryFile.cs

@@ -1,18 +0,0 @@
-using System.Text.RegularExpressions;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     查询指定版本下的某文件是否是二进制文件
-    /// </summary>
-    public class IsBinaryFile : Command {
-        private static readonly Regex REG_TEST = new Regex(@"^\-\s+\-\s+.*$");
-        public IsBinaryFile(string repo, string commit, string path) {
-            Cwd = repo;
-            Args = $"diff 4b825dc642cb6eb9a060e54bf8d69288fbee4904 {commit} --numstat -- \"{path}\"";
-        }
-
-        public bool Result() {
-            return REG_TEST.IsMatch(ReadToEnd().Output);
-        }
-    }
-}

src/Commands/IsLFSFiltered.cs

@@ -0,0 +1,15 @@
+namespace SourceGit.Commands {
+    public class IsLFSFiltered : Command {
+        public IsLFSFiltered(string repo, string path) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"check-attr -a -z \"{path}\"";
+            RaiseError = false;
+        }
+
+        public bool Result() {
+            var rs = ReadToEnd();
+            return rs.IsSuccess && rs.StdOut.Contains("filter\0lfs");
+        }
+    }
+}

src/Commands/LFS.cs

@@ -1,51 +1,40 @@
-using System;
+using System;
 using System.IO;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     LFS相关
-    /// </summary>
     public class LFS {
-        private string repo;
-
-        private class PruneCmd : Command {
-            private Action<string> handler;
-
+        class PruneCmd : Command {
             public PruneCmd(string repo, Action<string> onProgress) {
-                Cwd = repo;
+                WorkingDirectory = repo;
+                Context = repo;
                 Args = "lfs prune";
                 TraitErrorAsOutput = true;
-                handler = onProgress;
+                _outputHandler = onProgress;
             }
 
-            public override void OnReadline(string line) {
-                handler?.Invoke(line);
+            protected override void OnReadline(string line) {
+                _outputHandler?.Invoke(line);
             }
+
+            private Action<string> _outputHandler;
         }
 
         public LFS(string repo) {
-            this.repo = repo;
+            _repo = repo;
         }
 
         public bool IsEnabled() {
-            var path = Path.Combine(repo, ".git", "hooks", "pre-push");
+            var path = Path.Combine(_repo, ".git", "hooks", "pre-push");
             if (!File.Exists(path)) return false;
 
             var content = File.ReadAllText(path);
             return content.Contains("git lfs pre-push");
         }
 
-        public bool IsFiltered(string path) {
-            var cmd = new Command();
-            cmd.Cwd = repo;
-            cmd.Args = $"check-attr -a -z \"{path}\"";
-
-            var rs = cmd.ReadToEnd();
-            return rs.Output.Contains("filter\0lfs");
+        public void Prune(Action<string> outputHandler) {
+            new PruneCmd(_repo, outputHandler).Exec();
         }
 
-        public void Prune(Action<string> onProgress) {
-            new PruneCmd(repo, onProgress).Exec();
-        }
+        private string _repo;
     }
 }

src/Commands/LocalChanges.cs

@@ -1,67 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     取得本地工作副本变更
-    /// </summary>
-    public class LocalChanges : Command {
-        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
-        private static readonly string[] UNTRACKED = new string[] { "no", "all" };
-        private List<Models.Change> changes = new List<Models.Change>();
-
-        public LocalChanges(string path, bool includeUntracked = true) {
-            Cwd = path;
-            Args = $"status -u{UNTRACKED[includeUntracked ? 1 : 0]} --ignore-submodules=dirty --porcelain";
-        }
-
-        public List<Models.Change> Result() {
-            Exec();
-            return changes;
-        }
-
-        public override void OnReadline(string line) {
-            var match = REG_FORMAT.Match(line);
-            if (!match.Success) return;
-            if (line.EndsWith("/", StringComparison.Ordinal)) return; // Ignore changes with git-worktree
-
-            var change = new Models.Change() { Path = match.Groups[2].Value };
-            var status = match.Groups[1].Value;
-
-            switch (status) {
-            case " M": change.Set(Models.Change.Status.None, Models.Change.Status.Modified); break;
-            case " A": change.Set(Models.Change.Status.None, Models.Change.Status.Added); break;
-            case " D": change.Set(Models.Change.Status.None, Models.Change.Status.Deleted); break;
-            case " R": change.Set(Models.Change.Status.None, Models.Change.Status.Renamed); break;
-            case " C": change.Set(Models.Change.Status.None, Models.Change.Status.Copied); break;
-            case "M": change.Set(Models.Change.Status.Modified, Models.Change.Status.None); break;
-            case "MM": change.Set(Models.Change.Status.Modified, Models.Change.Status.Modified); break;
-            case "MD": change.Set(Models.Change.Status.Modified, Models.Change.Status.Deleted); break;
-            case "A": change.Set(Models.Change.Status.Added, Models.Change.Status.None); break;
-            case "AM": change.Set(Models.Change.Status.Added, Models.Change.Status.Modified); break;
-            case "AD": change.Set(Models.Change.Status.Added, Models.Change.Status.Deleted); break;
-            case "D": change.Set(Models.Change.Status.Deleted, Models.Change.Status.None); break;
-            case "R": change.Set(Models.Change.Status.Renamed, Models.Change.Status.None); break;
-            case "RM": change.Set(Models.Change.Status.Renamed, Models.Change.Status.Modified); break;
-            case "RD": change.Set(Models.Change.Status.Renamed, Models.Change.Status.Deleted); break;
-            case "C": change.Set(Models.Change.Status.Copied, Models.Change.Status.None); break;
-            case "CM": change.Set(Models.Change.Status.Copied, Models.Change.Status.Modified); break;
-            case "CD": change.Set(Models.Change.Status.Copied, Models.Change.Status.Deleted); break;
-            case "DR": change.Set(Models.Change.Status.Deleted, Models.Change.Status.Renamed); break;
-            case "DC": change.Set(Models.Change.Status.Deleted, Models.Change.Status.Copied); break;
-            case "DD": change.Set(Models.Change.Status.Deleted, Models.Change.Status.Deleted); break;
-            case "AU": change.Set(Models.Change.Status.Added, Models.Change.Status.Unmerged); break;
-            case "UD": change.Set(Models.Change.Status.Unmerged, Models.Change.Status.Deleted); break;
-            case "UA": change.Set(Models.Change.Status.Unmerged, Models.Change.Status.Added); break;
-            case "DU": change.Set(Models.Change.Status.Deleted, Models.Change.Status.Unmerged); break;
-            case "AA": change.Set(Models.Change.Status.Added, Models.Change.Status.Added); break;
-            case "UU": change.Set(Models.Change.Status.Unmerged, Models.Change.Status.Unmerged); break;
-            case "??": change.Set(Models.Change.Status.Untracked, Models.Change.Status.Untracked); break;
-            default: return;
-            }
-
-            changes.Add(change);
-        }
-    }
-}

src/Commands/Merge.cs

@@ -1,21 +1,19 @@
-using System;
+using System;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     合并分支
-    /// </summary>
     public class Merge : Command {
-        private Action<string> handler = null;
-
-        public Merge(string repo, string source, string mode, Action<string> onProgress) {
-            Cwd = repo;
-            Args = $"merge --progress {source} {mode}";
+        public Merge(string repo, string source, string mode, Action<string> outputHandler) {
+            _outputHandler = outputHandler;
+            WorkingDirectory = repo;
+            Context = repo;
             TraitErrorAsOutput = true;
-            handler = onProgress;
+            Args = $"merge --progress {source} {mode}";
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
+
+        private Action<string> _outputHandler = null;
     }
 }

src/Commands/MergeTool.cs

@@ -0,0 +1,41 @@
+using System.IO;
+
+namespace SourceGit.Commands {
+    public static class MergeTool {
+        public static bool OpenForMerge(string repo, string tool, string mergeCmd, string file) {
+            if (string.IsNullOrWhiteSpace(tool) || string.IsNullOrWhiteSpace(mergeCmd)) {
+                App.RaiseException(repo, "Invalid external merge tool settings!");
+                return false;
+            }
+
+            if (!File.Exists(tool)) {
+                App.RaiseException(repo, $"Can NOT found external merge tool in '{tool}'!");
+                return false;
+            }
+
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.RaiseError = false;
+            cmd.Args = $"-c mergetool.sourcegit.cmd=\"\\\"{tool}\\\" {mergeCmd}\" -c mergetool.writeToTemp=true -c mergetool.keepBackup=false -c mergetool.trustExitCode=true mergetool --tool=sourcegit \"{file}\"";
+            return cmd.Exec();
+        }
+
+        public static bool OpenForDiff(string repo, string tool, string diffCmd, Models.DiffOption option) {
+            if (string.IsNullOrWhiteSpace(tool) || string.IsNullOrWhiteSpace(diffCmd)) {
+                App.RaiseException(repo, "Invalid external merge tool settings!");
+                return false;
+            }
+
+            if (!File.Exists(tool)) {
+                App.RaiseException(repo, $"Can NOT found external merge tool in '{tool}'!");
+                return false;
+            }
+
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.RaiseError = false;      
+            cmd.Args = $"-c difftool.sourcegit.cmd=\"\\\"{tool}\\\" {diffCmd}\" difftool --tool=sourcegit --no-prompt {option}";
+            return cmd.Exec();
+        }
+    }
+}

src/Commands/Pull.cs

@@ -1,19 +1,12 @@
-using System;
+using System;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     拉回
-    /// </summary>
     public class Pull : Command {
-        private Action<string> handler = null;
-        private bool needStash = false;
-
-        public Pull(string repo, string remote, string branch, bool useRebase, bool autoStash, Action<string> onProgress) {
-            Cwd = repo;
+        public Pull(string repo, string remote, string branch, bool useRebase, Action<string> outputHandler) {
+            _outputHandler = outputHandler;
+            WorkingDirectory = repo;
+            Context = repo;
             TraitErrorAsOutput = true;
-            handler = onProgress;
-            needStash = autoStash;
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
@@ -27,25 +20,10 @@ namespace SourceGit.Commands {
             Args += $"{remote} {branch}";
         }
 
-        public bool Run() {
-            if (needStash) {
-                var changes = new LocalChanges(Cwd).Result();
-                if (changes.Count > 0) {
-                    if (!new Stash(Cwd).Push(changes, "PULL_AUTO_STASH", true)) {
-                        return false;
-                    }
-                } else {
-                    needStash = false;
-                }
-            }
-
-            var succ = Exec();
-            if (succ && needStash) new Stash(Cwd).Pop("stash@{0}");
-            return succ;
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
-        }
+        private Action<string> _outputHandler;
     }
 }

src/Commands/Push.cs

@@ -1,16 +1,12 @@
-using System;
+using System;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     推送
-    /// </summary>
     public class Push : Command {
-        private Action<string> handler = null;
-
         public Push(string repo, string local, string remote, string remoteBranch, bool withTags, bool force, bool track, Action<string> onProgress) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             TraitErrorAsOutput = true;
-            handler = onProgress;
+            _outputHandler = onProgress;
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
@@ -28,8 +24,16 @@ namespace SourceGit.Commands {
             Args += $"{remote} {local}:{remoteBranch}";
         }
 
+        /// <summary>
+        ///     Only used to delete a remote branch!!!!!!
+        /// </summary>
+        /// <param name="repo"></param>
+        /// <param name="remote"></param>
+        /// <param name="branch"></param>
         public Push(string repo, string remote, string branch) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
+            TraitErrorAsOutput = true;
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
@@ -42,7 +46,8 @@ namespace SourceGit.Commands {
         }
 
         public Push(string repo, string remote, string tag, bool isDelete) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
@@ -56,8 +61,10 @@ namespace SourceGit.Commands {
             Args += $"{remote} refs/tags/{tag}";
         }
 
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
+
+        private Action<string> _outputHandler = null;
     }
 }

src/Commands/QueryBranches.cs

@@ -1,31 +1,26 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     解析所有的分支
-    /// </summary>
-    public class Branches : Command {
+    public class QueryBranches : Command {
         private static readonly string PREFIX_LOCAL = "refs/heads/";
         private static readonly string PREFIX_REMOTE = "refs/remotes/";
-        private static readonly string CMD = "branch -l --all -v --format=\"%(refname)$%(objectname)$%(HEAD)$%(upstream)$%(upstream:track)\"";
         private static readonly Regex REG_AHEAD = new Regex(@"ahead (\d+)");
         private static readonly Regex REG_BEHIND = new Regex(@"behind (\d+)");
 
-        private List<Models.Branch> loaded = new List<Models.Branch>();
-
-        public Branches(string path) {
-            Cwd = path;
-            Args = CMD;
+        public QueryBranches(string repo) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = "branch -l --all -v --format=\"%(refname)$%(objectname)$%(HEAD)$%(upstream)$%(upstream:track)\"";
         }
 
         public List<Models.Branch> Result() {
             Exec();
-            return loaded;
+            return _branches;
         }
 
-        public override void OnReadline(string line) {
+        protected override void OnReadline(string line) {
             var parts = line.Split('$');
             if (parts.Length != 5) return;
 
@@ -55,7 +50,7 @@ namespace SourceGit.Commands {
             branch.Upstream = parts[3];
             branch.UpstreamTrackStatus = ParseTrackStatus(parts[4]);
 
-            loaded.Add(branch);
+            _branches.Add(branch);
         }
 
         private string ParseTrackStatus(string data) {
@@ -75,5 +70,7 @@ namespace SourceGit.Commands {
 
             return track.Trim();
         }
+
+        private List<Models.Branch> _branches = new List<Models.Branch>();
     }
 }

src/Commands/QueryCommitChanges.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class QueryCommitChanges : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
+
+        public QueryCommitChanges(string repo, string commitSHA) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"show --name-status {commitSHA}";
+        }
+
+        public List<Models.Change> Result() {
+            Exec();
+            _changes.Sort((l, r) => l.Path.CompareTo(r.Path));
+            return _changes;
+        }
+
+        protected override void OnReadline(string line) {
+            var match = REG_FORMAT.Match(line);
+            if (!match.Success) return;
+
+            var change = new Models.Change() { Path = match.Groups[2].Value };
+            var status = match.Groups[1].Value;
+
+            switch (status[0]) {
+            case 'M': change.Set(Models.ChangeState.Modified); _changes.Add(change); break;
+            case 'A': change.Set(Models.ChangeState.Added); _changes.Add(change); break;
+            case 'D': change.Set(Models.ChangeState.Deleted); _changes.Add(change); break;
+            case 'R': change.Set(Models.ChangeState.Renamed); _changes.Add(change); break;
+            case 'C': change.Set(Models.ChangeState.Copied); _changes.Add(change); break;
+            }
+        }
+
+        private List<Models.Change> _changes = new List<Models.Change>();
+    }
+}

src/Commands/QueryCommits.cs

@@ -1,13 +1,8 @@
-using System;
+using System;
 using System.Collections.Generic;
-using System.Linq;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     取得提交列表
-    /// </summary>
-    public class Commits : Command {
+    public class QueryCommits : Command {
         private static readonly string GPGSIG_START = "gpgsig -----BEGIN PGP SIGNATURE-----";
         private static readonly string GPGSIG_END = " -----END PGP SIGNATURE-----";
 
@@ -17,8 +12,8 @@ namespace SourceGit.Commands {
         private bool isHeadFounded = false;
         private bool findFirstMerged = true;
 
-        public Commits(string path, string limits, bool needFindHead = true) {
-            Cwd = path;
+        public QueryCommits(string repo, string limits, bool needFindHead = true) {
+            WorkingDirectory = repo;
             Args = "log --date-order --decorate=full --pretty=raw " + limits;
             findFirstMerged = needFindHead;
         }
@@ -38,7 +33,7 @@ namespace SourceGit.Commands {
             return commits;
         }
 
-        public override void OnReadline(string line) {
+        protected override void OnReadline(string line) {
             if (isSkipingGpgsig) {
                 if (line.StartsWith(GPGSIG_END, StringComparison.Ordinal)) isSkipingGpgsig = false;
                 return;
@@ -137,10 +132,10 @@ namespace SourceGit.Commands {
         }
 
         private void MarkFirstMerged() {
-            Args = $"log --since=\"{commits.Last().CommitterTimeStr}\" --format=\"%H\"";
+            Args = $"log --since=\"{commits[commits.Count - 1].CommitterTimeStr}\" --format=\"%H\"";
 
             var rs = ReadToEnd();
-            var shas = rs.Output.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
+            var shas = rs.StdOut.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
             if (shas.Length == 0) return;
 
             var set = new HashSet<string>();

src/Commands/QueryFileContent.cs

@@ -1,26 +1,23 @@
-using System.Collections.Generic;
+using System.Text;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     取得指定提交下的某文件内容
-    /// </summary>
     public class QueryFileContent : Command {
-        private List<Models.TextLine> lines = new List<Models.TextLine>();
-        private int added = 0;
-
-        public QueryFileContent(string repo, string commit, string path) {
-            Cwd = repo;
-            Args = $"show {commit}:\"{path}\"";
+        public QueryFileContent(string repo, string revision, string file) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"show {revision}:\"{file}\"";
         }
 
-        public List<Models.TextLine> Result() {
+        public string Result() {
             Exec();
-            return lines;
+            return _builder.ToString();
         }
 
-        public override void OnReadline(string line) {
-            added++;
-            lines.Add(new Models.TextLine() { Number = added, Data = line });
+        protected override void OnReadline(string line) {
+            _builder.Append(line);
+            _builder.Append('\n');
         }
+
+        private StringBuilder _builder = new StringBuilder();
     }
 }

src/Commands/QueryFileSize.cs

@@ -0,0 +1,29 @@
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class QueryFileSize : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^\d+\s+\w+\s+[0-9a-f]+\s+(\d+)\s+.*$");
+
+        public QueryFileSize(string repo, string file, string revision) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"ls-tree {revision} -l -- {file}";
+        }
+
+        public long Result() {
+            if (_result != 0) return _result;
+
+            var rs = ReadToEnd();
+            if (rs.IsSuccess) {
+                var match = REG_FORMAT.Match(rs.StdOut);
+                if (match.Success) {
+                    return long.Parse(match.Groups[1].Value);
+                }
+            }
+
+            return 0;
+        }
+
+        private long _result = 0;
+    }
+}

src/Commands/QueryFileSizeChange.cs

@@ -1,50 +0,0 @@
-using System.IO;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     查询文件大小变化
-    /// </summary>
-    public class QueryFileSizeChange {
-
-        class QuerySizeCmd : Command {
-            public QuerySizeCmd(string repo, string path, string revision) {
-                Cwd = repo;
-                Args = $"cat-file -s {revision}:\"{path}\"";
-            }
-
-            public long Result() {
-                string data = ReadToEnd().Output;
-                long size;
-                if (!long.TryParse(data, out size)) size = 0;
-                return size;
-            }
-        }
-
-        private Models.FileSizeChange change = new Models.FileSizeChange();
-
-        public QueryFileSizeChange(string repo, string[] revisions, string path, string orgPath) {
-            if (revisions.Length == 0) {
-                change.NewSize = new FileInfo(Path.Combine(repo, path)).Length;
-                change.OldSize = new QuerySizeCmd(repo, path, "HEAD").Result();
-            } else if (revisions.Length == 1) {
-                change.NewSize = new QuerySizeCmd(repo, path, "HEAD").Result();
-                if (string.IsNullOrEmpty(orgPath)) {
-                    change.OldSize = new QuerySizeCmd(repo, path, revisions[0]).Result();
-                } else {
-                    change.OldSize = new QuerySizeCmd(repo, orgPath, revisions[0]).Result();
-                }
-            } else {
-                change.NewSize = new QuerySizeCmd(repo, path, revisions[1]).Result();
-                if (string.IsNullOrEmpty(orgPath)) {
-                    change.OldSize = new QuerySizeCmd(repo, path, revisions[0]).Result();
-                } else {
-                    change.OldSize = new QuerySizeCmd(repo, orgPath, revisions[0]).Result();
-                }
-            }
-        }
-
-        public Models.FileSizeChange Result() {
-            return change;
-        }
-    }
-}

src/Commands/QueryGitDir.cs

@@ -1,23 +1,20 @@
-using System.IO;
+using System.IO;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     取得GitDir
-    /// </summary>
     public class QueryGitDir : Command {
         public QueryGitDir(string workDir) {
-            Cwd = workDir;
+            WorkingDirectory = workDir;
             Args = "rev-parse --git-dir";
+            RaiseError = false;
         }
 
         public string Result() {
-            var rs = ReadToEnd().Output;
+            var rs = ReadToEnd().StdOut;
             if (string.IsNullOrEmpty(rs)) return null;
 
             rs = rs.Trim();
             if (Path.IsPathRooted(rs)) return rs;
-            return Path.GetFullPath(Path.Combine(Cwd, rs));
+            return Path.GetFullPath(Path.Combine(WorkingDirectory, rs));
         }
     }
 }

src/Commands/QueryLFSObject.cs

@@ -1,28 +0,0 @@
-using System;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     取得一个LFS对象的信息
-    /// </summary>
-    public class QueryLFSObject : Command {
-        private Models.LFSObject obj = new Models.LFSObject();
-
-        public QueryLFSObject(string repo, string commit, string path) {
-            Cwd = repo;
-            Args = $"show {commit}:\"{path}\"";
-        }
-
-        public Models.LFSObject Result() {
-            Exec();
-            return obj;
-        }
-
-        public override void OnReadline(string line) {
-            if (line.StartsWith("oid sha256:", StringComparison.Ordinal)) {
-                obj.OID = line.Substring(11).Trim();
-            } else if (line.StartsWith("size")) {
-                obj.Size = int.Parse(line.Substring(4).Trim());
-            }
-        }
-    }
-}

src/Commands/QueryLFSObjectChange.cs

@@ -1,41 +0,0 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     查询LFS对象变更
-    /// </summary>
-    public class QueryLFSObjectChange : Command {
-        private Models.LFSChange change = new Models.LFSChange();
-
-        public QueryLFSObjectChange(string repo, string args) {
-            Cwd = repo;
-            Args = $"diff --ignore-cr-at-eol {args}";
-        }
-
-        public Models.LFSChange Result() {
-            Exec();
-            return change;
-        }
-
-        public override void OnReadline(string line) {
-            var ch = line[0];
-            if (ch == '-') {
-                if (change.Old == null) change.Old = new Models.LFSObject();
-                line = line.Substring(1);
-                if (line.StartsWith("oid sha256:")) {
-                    change.Old.OID = line.Substring(11);
-                } else if (line.StartsWith("size ")) {
-                    change.Old.Size = int.Parse(line.Substring(5));
-                }
-            } else if (ch == '+') {
-                if (change.New == null) change.New = new Models.LFSObject();
-                line = line.Substring(1);
-                if (line.StartsWith("oid sha256:")) {
-                    change.New.OID = line.Substring(11);
-                } else if (line.StartsWith("size ")) {
-                    change.New.Size = int.Parse(line.Substring(5));
-                }
-            } else if (line.StartsWith(" size ")) {
-                change.New.Size = change.Old.Size = int.Parse(line.Substring(6));
-            }
-        }
-    }
-}

src/Commands/QueryLocalChanges.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class QueryLocalChanges : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
+        private static readonly string[] UNTRACKED = [ "no", "all" ];
+
+        public QueryLocalChanges(string repo, bool includeUntracked = true) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"status -u{UNTRACKED[includeUntracked ? 1 : 0]} --ignore-submodules=dirty --porcelain";
+        }
+
+        public List<Models.Change> Result() {
+            Exec();
+            return _changes;
+        }
+
+        protected override void OnReadline(string line) {
+            var match = REG_FORMAT.Match(line);
+            if (!match.Success) return;
+            if (line.EndsWith("/", StringComparison.Ordinal)) return; // Ignore changes with git-worktree
+
+            var change = new Models.Change() { Path = match.Groups[2].Value };
+            var status = match.Groups[1].Value;
+
+            switch (status) {
+            case " M": change.Set(Models.ChangeState.None, Models.ChangeState.Modified); break;
+            case " A": change.Set(Models.ChangeState.None, Models.ChangeState.Added); break;
+            case " D": change.Set(Models.ChangeState.None, Models.ChangeState.Deleted); break;
+            case " R": change.Set(Models.ChangeState.None, Models.ChangeState.Renamed); break;
+            case " C": change.Set(Models.ChangeState.None, Models.ChangeState.Copied); break;
+            case "M": change.Set(Models.ChangeState.Modified, Models.ChangeState.None); break;
+            case "MM": change.Set(Models.ChangeState.Modified, Models.ChangeState.Modified); break;
+            case "MD": change.Set(Models.ChangeState.Modified, Models.ChangeState.Deleted); break;
+            case "A": change.Set(Models.ChangeState.Added, Models.ChangeState.None); break;
+            case "AM": change.Set(Models.ChangeState.Added, Models.ChangeState.Modified); break;
+            case "AD": change.Set(Models.ChangeState.Added, Models.ChangeState.Deleted); break;
+            case "D": change.Set(Models.ChangeState.Deleted, Models.ChangeState.None); break;
+            case "R": change.Set(Models.ChangeState.Renamed, Models.ChangeState.None); break;
+            case "RM": change.Set(Models.ChangeState.Renamed, Models.ChangeState.Modified); break;
+            case "RD": change.Set(Models.ChangeState.Renamed, Models.ChangeState.Deleted); break;
+            case "C": change.Set(Models.ChangeState.Copied, Models.ChangeState.None); break;
+            case "CM": change.Set(Models.ChangeState.Copied, Models.ChangeState.Modified); break;
+            case "CD": change.Set(Models.ChangeState.Copied, Models.ChangeState.Deleted); break;
+            case "DR": change.Set(Models.ChangeState.Deleted, Models.ChangeState.Renamed); break;
+            case "DC": change.Set(Models.ChangeState.Deleted, Models.ChangeState.Copied); break;
+            case "DD": change.Set(Models.ChangeState.Deleted, Models.ChangeState.Deleted); break;
+            case "AU": change.Set(Models.ChangeState.Added, Models.ChangeState.Unmerged); break;
+            case "UD": change.Set(Models.ChangeState.Unmerged, Models.ChangeState.Deleted); break;
+            case "UA": change.Set(Models.ChangeState.Unmerged, Models.ChangeState.Added); break;
+            case "DU": change.Set(Models.ChangeState.Deleted, Models.ChangeState.Unmerged); break;
+            case "AA": change.Set(Models.ChangeState.Added, Models.ChangeState.Added); break;
+            case "UU": change.Set(Models.ChangeState.Unmerged, Models.ChangeState.Unmerged); break;
+            case "??": change.Set(Models.ChangeState.Untracked, Models.ChangeState.Untracked); break;
+            default: return;
+            }
+
+            _changes.Add(change);
+        }
+
+        private List<Models.Change> _changes = new List<Models.Change>();
+    }
+}

src/Commands/QueryRemotes.cs

@@ -1,25 +1,22 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     获取远程列表
-    /// </summary>
-    public class Remotes : Command {
+    public class QueryRemotes : Command {
         private static readonly Regex REG_REMOTE = new Regex(@"^([\w\.\-]+)\s*(\S+).*$");
-        private List<Models.Remote> loaded = new List<Models.Remote>();
 
-        public Remotes(string repo) {
-            Cwd = repo;
+        public QueryRemotes(string repo) {
+            WorkingDirectory = repo;
+            Context = repo;
             Args = "remote -v";
         }
 
         public List<Models.Remote> Result() {
             Exec();
-            return loaded;
+            return _loaded;
         }
 
-        public override void OnReadline(string line) {
+        protected override void OnReadline(string line) {
             var match = REG_REMOTE.Match(line);
             if (!match.Success) return;
 
@@ -28,8 +25,10 @@ namespace SourceGit.Commands {
                 URL = match.Groups[2].Value,
             };
 
-            if (loaded.Find(x => x.Name == remote.Name) != null) return;
-            loaded.Add(remote);
+            if (_loaded.Find(x => x.Name == remote.Name) != null) return;
+            _loaded.Add(remote);
         }
+
+        private List<Models.Remote> _loaded = new List<Models.Remote>();
     }
 }

src/Commands/QueryRepositoryRootPath.cs

@@ -0,0 +1,15 @@
+namespace SourceGit.Commands {
+    public class QueryRepositoryRootPath : Command {
+        public QueryRepositoryRootPath(string path) {
+            WorkingDirectory = path;
+            Args = "rev-parse --show-toplevel";
+            RaiseError = false;
+        }
+
+        public string Result() {
+            var rs = ReadToEnd().StdOut;
+            if (string.IsNullOrEmpty(rs)) return null;
+            return rs.Trim();
+        }
+    }
+}

src/Commands/QueryRevisionObjects.cs

@@ -1,16 +1,14 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     取出指定Revision下的文件列表
-    /// </summary>
-    public class RevisionObjects : Command {
+    public class QueryRevisionObjects : Command {
         private static readonly Regex REG_FORMAT = new Regex(@"^\d+\s+(\w+)\s+([0-9a-f]+)\s+(.*)$");
         private List<Models.Object> objects = new List<Models.Object>();
 
-        public RevisionObjects(string cwd, string sha) {
-            Cwd = cwd;
+        public QueryRevisionObjects(string repo, string sha) {
+            WorkingDirectory = repo;
+            Context = repo;
             Args = $"ls-tree -r {sha}";
         }
 
@@ -19,7 +17,7 @@ namespace SourceGit.Commands {
             return objects;
         }
 
-        public override void OnReadline(string line) {
+        protected override void OnReadline(string line) {
             var match = REG_FORMAT.Match(line);
             if (!match.Success) return;
 

src/Commands/QueryStashChanges.cs

@@ -0,0 +1,37 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class QueryStashChanges : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
+
+        public QueryStashChanges(string repo, string sha) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"diff --name-status --pretty=format: {sha}^ {sha}";
+        }
+
+        public List<Models.Change> Result() {
+            Exec();
+            return _changes;
+        }
+
+        protected override void OnReadline(string line) {
+            var match = REG_FORMAT.Match(line);
+            if (!match.Success) return;
+
+            var change = new Models.Change() { Path = match.Groups[2].Value };
+            var status = match.Groups[1].Value;
+
+            switch (status[0]) {
+            case 'M': change.Set(Models.ChangeState.Modified); _changes.Add(change); break;
+            case 'A': change.Set(Models.ChangeState.Added); _changes.Add(change); break;
+            case 'D': change.Set(Models.ChangeState.Deleted); _changes.Add(change); break;
+            case 'R': change.Set(Models.ChangeState.Renamed); _changes.Add(change); break;
+            case 'C': change.Set(Models.ChangeState.Copied); _changes.Add(change); break;
+            }
+        }
+
+        private List<Models.Change> _changes = new List<Models.Change>();
+    }
+}

src/Commands/QueryStashes.cs

@@ -1,48 +1,47 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     解析当前仓库中的贮藏
-    /// </summary>
-    public class Stashes : Command {
+    public class QueryStashes : Command {
         private static readonly Regex REG_STASH = new Regex(@"^Reflog: refs/(stash@\{\d+\}).*$");
-        private List<Models.Stash> parsed = new List<Models.Stash>();
-        private Models.Stash current = null;
-
-        public Stashes(string path) {
-            Cwd = path;
+        
+        public QueryStashes(string repo) {
+            WorkingDirectory = repo;
+            Context = repo;
             Args = "stash list --pretty=raw";
         }
 
         public List<Models.Stash> Result() {
             Exec();
-            if (current != null) parsed.Add(current);
-            return parsed;
+            if (_current != null) _stashes.Add(_current);
+            return _stashes;
         }
 
-        public override void OnReadline(string line) {
+        protected override void OnReadline(string line) {
             if (line.StartsWith("commit ", StringComparison.Ordinal)) {
-                if (current != null && !string.IsNullOrEmpty(current.Name)) parsed.Add(current);
-                current = new Models.Stash() { SHA = line.Substring(7, 8) };
+                if (_current != null && !string.IsNullOrEmpty(_current.Name)) _stashes.Add(_current);
+                _current = new Models.Stash() { SHA = line.Substring(7, 8) };
                 return;
             }
 
-            if (current == null) return;
+            if (_current == null) return;
 
             if (line.StartsWith("Reflog: refs/stash@", StringComparison.Ordinal)) {
                 var match = REG_STASH.Match(line);
-                if (match.Success) current.Name = match.Groups[1].Value;
+                if (match.Success) _current.Name = match.Groups[1].Value;
             } else if (line.StartsWith("Reflog message: ", StringComparison.Ordinal)) {
-                current.Message = line.Substring(16);
+                _current.Message = line.Substring(16);
             } else if (line.StartsWith("author ", StringComparison.Ordinal)) {
                 Models.User user = Models.User.Invalid;
                 ulong time = 0;
                 Models.Commit.ParseUserAndTime(line.Substring(7), ref user, ref time);
-                current.Author = user;
-                current.Time = time;
+                _current.Author = user;
+                _current.Time = time;
             }
         }
+
+        private List<Models.Stash> _stashes = new List<Models.Stash>();
+        private Models.Stash _current = null;
     }
 }

src/Commands/QuerySubmodules.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class QuerySubmodules : Command {
+        private readonly Regex REG_FORMAT = new Regex(@"^[\-\+ ][0-9a-f]+\s(.*)\s\(.*\)$");
+
+        public QuerySubmodules(string repo) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = "submodule status";
+        }
+
+        public List<string> Result() {
+            Exec();
+            return _submodules;
+        }
+
+        protected override void OnReadline(string line) {
+            var match = REG_FORMAT.Match(line);
+            if (!match.Success) return;
+            _submodules.Add(match.Groups[1].Value);
+        }
+
+        private List<string> _submodules = new List<string>();
+    }
+}

src/Commands/QueryTags.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+
+namespace SourceGit.Commands {
+    public class QueryTags : Command {
+        public QueryTags(string repo) {
+            Context = repo;
+            WorkingDirectory = repo;
+            Args = "for-each-ref --sort=-creatordate --format=\"$%(refname:short)$%(objectname)$%(*objectname)\" refs/tags";
+        }
+
+        public List<Models.Tag> Result() {
+            Exec();
+            return _loaded;
+        }
+
+        protected override void OnReadline(string line) {
+            var subs = line.Split(new char[] { '$' }, StringSplitOptions.RemoveEmptyEntries);
+            if (subs.Length == 2) {
+                _loaded.Add(new Models.Tag() {
+                    Name = subs[0],
+                    SHA = subs[1],
+                });
+            } else if (subs.Length == 3) {
+                _loaded.Add(new Models.Tag() {
+                    Name = subs[0],
+                    SHA = subs[2],
+                });
+            }
+        }
+
+        private List<Models.Tag> _loaded = new List<Models.Tag>();
+    }
+}

src/Commands/Rebase.cs

@@ -1,11 +1,8 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     变基命令
-    /// </summary>
+namespace SourceGit.Commands {
     public class Rebase : Command {
-
         public Rebase(string repo, string basedOn, bool autoStash) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = "rebase ";
             if (autoStash) Args += "--autostash ";
             Args += basedOn;

src/Commands/Remote.cs

@@ -1,11 +1,8 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     远程操作
-    /// </summary>
+namespace SourceGit.Commands {
     public class Remote : Command {
-
         public Remote(string repo) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
         }
 
         public bool Add(string name, string url) {

src/Commands/Reset.cs

@@ -1,33 +1,32 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     重置命令
-    /// </summary>
     public class Reset : Command {
-
         public Reset(string repo) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = "reset";
         }
 
-        public Reset(string repo, string revision, string mode) {
-            Cwd = repo;
-            Args = $"reset {mode} {revision}";
-        }
+        public Reset(string repo, List<Models.Change> changes) {
+            WorkingDirectory = repo;
+            Context = repo;
 
-        public Reset(string repo, List<string> files) {
-            Cwd = repo;
-
-            StringBuilder builder = new StringBuilder();
+            var builder = new StringBuilder();
             builder.Append("reset --");
-            foreach (var f in files) {
+            foreach (var c in changes) {
                 builder.Append(" \"");
-                builder.Append(f);
+                builder.Append(c.Path);
                 builder.Append("\"");
             }
             Args = builder.ToString();
         }
+
+        public Reset(string repo, string revision, string mode) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"reset {mode} {revision}";
+        }        
     }
 }

src/Commands/Revert.cs

@@ -1,11 +1,8 @@
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     撤销提交
-    /// </summary>
+namespace SourceGit.Commands {
     public class Revert : Command {
-
         public Revert(string repo, string commit, bool autoCommit) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
             Args = $"revert {commit} --no-edit";
             if (!autoCommit) Args += "  --no-commit";
         }

src/Commands/Reword.cs

@@ -1,16 +0,0 @@
-using System.IO;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     编辑HEAD的提交信息
-    /// </summary>
-    public class Reword : Command {
-        public Reword(string repo, string msg) {
-            var tmp = Path.GetTempFileName();
-            File.WriteAllText(tmp, msg);
-
-            Cwd = repo;
-            Args = $"commit --amend --allow-empty --file=\"{tmp}\"";
-        }
-    }
-}

src/Commands/SaveChangesAsPatch.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+
+namespace SourceGit.Commands {
+    public static class SaveChangesAsPatch {
+        public static bool Exec(string repo, List<Models.Change> changes, bool isUnstaged, string saveTo) {
+            using (var sw = File.Create(saveTo)) {
+                foreach (var change in changes) {
+                    if (!ProcessSingleChange(repo, new Models.DiffOption(change, isUnstaged), sw)) return false;
+                }
+            }
+
+            return true;
+        }
+
+        private static bool ProcessSingleChange(string repo, Models.DiffOption opt, FileStream writer) {
+            var starter = new ProcessStartInfo();
+            starter.WorkingDirectory = repo;
+            starter.FileName = Native.OS.GitExecutableFile;
+            starter.Arguments = $"diff --ignore-cr-at-eol --unified=4 {opt}";
+            starter.UseShellExecute = false;
+            starter.CreateNoWindow = true;
+            starter.WindowStyle = ProcessWindowStyle.Hidden;
+            starter.RedirectStandardOutput = true;
+
+            try {
+                var proc = new Process() { StartInfo = starter };
+                proc.Start();
+                proc.StandardOutput.BaseStream.CopyTo(writer);
+                proc.WaitForExit();
+                var rs = proc.ExitCode == 0;
+                proc.Close();
+
+                return rs;
+            } catch (Exception e) {
+                App.RaiseException(repo, "Save change to patch failed: " + e.Message);
+                return false;
+            }
+        }
+    }
+}

src/Commands/SaveChangesToPatch.cs

@@ -1,26 +0,0 @@
-using System.IO;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     将Changes保存到文件流中
-    /// </summary>
-    public class SaveChangeToStream : Command {
-        private StreamWriter writer = null;
-
-        public SaveChangeToStream(string repo, Models.Change change, StreamWriter to) {
-            Cwd = repo;
-            if (change.WorkTree == Models.Change.Status.Added || change.WorkTree == Models.Change.Status.Untracked) {
-                Args = $"diff --no-index --no-ext-diff --find-renames -- /dev/null \"{change.Path}\"";
-            } else {
-                var pathspec = $"\"{change.Path}\"";
-                if (!string.IsNullOrEmpty(change.OriginalPath)) pathspec = $"\"{change.OriginalPath}\" \"{change.Path}\"";
-                Args = $"diff --binary --no-ext-diff --find-renames --full-index -- {pathspec}";
-            }
-            writer = to;
-        }
-
-        public override void OnReadline(string line) {
-            writer.WriteLine(line);
-        }
-    }
-}

src/Commands/SaveRevisionFile.cs

@@ -1,44 +1,60 @@
+using System;
 using System.Diagnostics;
 using System.IO;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     保存指定版本的文件
-    /// </summary>
-    public class SaveRevisionFile {
-        private string cwd = "";
-        private string bat = "";
-
-        public SaveRevisionFile(string repo, string path, string sha, string saveTo) {
-            var tmp = Path.GetTempFileName();
-            var cmd = $"\"{Models.Preference.Instance.Git.Path}\" --no-pager ";
-
-            var isLFS = new LFS(repo).IsFiltered(path);
-            if (isLFS) {
-                cmd += $"show {sha}:\"{path}\" > {tmp}.lfs\n";
-                cmd += $"\"{Models.Preference.Instance.Git.Path}\" --no-pager lfs smudge < {tmp}.lfs > \"{saveTo}\"\n";
+    public static class SaveRevisionFile {
+        public static void Run(string repo, string revision, string file, string saveTo) {
+            var isLFSFiltered = new IsLFSFiltered(repo, file).Result();
+            if (isLFSFiltered) {
+                var tmpFile = saveTo + ".tmp";
+                if (ExecCmd(repo, $"show {revision}:\"{file}\"", tmpFile)) {
+                    ExecCmd(repo, $"lfs smudge", saveTo, tmpFile);
+                }                
+                File.Delete(tmpFile);
             } else {
-                cmd += $"show {sha}:\"{path}\" > \"{saveTo}\"\n";
+                ExecCmd(repo, $"show {revision}:\"{file}\"", saveTo);
             }
-
-            cwd = repo;
-            bat = tmp + ".bat";
-
-            File.WriteAllText(bat, cmd);
         }
-
-        public void Exec() {
+        
+        private static bool ExecCmd(string repo, string args, string outputFile, string inputFile = null) {
             var starter = new ProcessStartInfo();
-            starter.FileName = bat;
-            starter.WorkingDirectory = cwd;
+            starter.WorkingDirectory = repo;
+            starter.FileName = Native.OS.GitExecutableFile;
+            starter.Arguments = args;
+            starter.UseShellExecute = false;
             starter.CreateNoWindow = true;
             starter.WindowStyle = ProcessWindowStyle.Hidden;
+            starter.RedirectStandardInput = true;
+            starter.RedirectStandardOutput = true;
+            starter.RedirectStandardError = true;
 
-            var proc = Process.Start(starter);
-            proc.WaitForExit();
-            proc.Close();
+            using (var sw = File.OpenWrite(outputFile)) {
+                try {
+                    var proc = new Process() { StartInfo = starter };
+                    proc.Start();
 
-            File.Delete(bat);
+                    if (inputFile != null) {
+                        using (StreamReader sr = new StreamReader(inputFile)) {
+                            while (true) {
+                                var line = sr.ReadLine();
+                                if (line == null) break;
+                                proc.StandardInput.WriteLine(line);
+                            }
+                        }
+                    }
+
+                    proc.StandardOutput.BaseStream.CopyTo(sw);
+                    proc.WaitForExit();
+                    var rs = proc.ExitCode == 0;
+                    proc.Close();
+
+                    return rs;
+                } catch (Exception e) {
+                    App.RaiseException(repo, "Save file failed: " + e.Message);
+                    return false;
+                }
+            }
         }
     }
 }

src/Commands/Stash.cs

@@ -1,68 +1,49 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     单个贮藏相关操作
-    /// </summary>
     public class Stash : Command {
-
         public Stash(string repo) {
-            Cwd = repo;
+            WorkingDirectory = repo;
+            Context = repo;
         }
 
-        public bool Push(List<Models.Change> changes, string message, bool bFull) {
-            if (bFull) {
-                var needAdd = new List<string>();
-                foreach (var c in changes) {
-                    if (c.WorkTree == Models.Change.Status.Added || c.WorkTree == Models.Change.Status.Untracked) {
-                        needAdd.Add(c.Path);
-                        if (needAdd.Count > 10) {
-                            new Add(Cwd, needAdd).Exec();
-                            needAdd.Clear();
-                        }
+        public bool Push(string message) {
+            Args = $"stash push -m \"{message}\"";
+            return Exec();
+        }
+
+        public bool Push(List<Models.Change> changes, string message) {
+            var temp = Path.GetTempFileName();
+            var stream = new FileStream(temp, FileMode.Create);
+            var writer = new StreamWriter(stream);
+
+            var needAdd = new List<Models.Change>();
+            foreach (var c in changes) {
+                writer.WriteLine(c.Path);
+
+                if (c.WorkTree == Models.ChangeState.Added || c.WorkTree == Models.ChangeState.Untracked) {
+                    needAdd.Add(c);
+                    if (needAdd.Count > 10) {
+                        new Add(WorkingDirectory, needAdd).Exec();
+                        needAdd.Clear();
                     }
                 }
+            }
+            if (needAdd.Count > 0) {
+                new Add(WorkingDirectory, needAdd).Exec();
+                needAdd.Clear();
+            }
 
-                if (needAdd.Count > 0) {
-                    new Add(Cwd, needAdd).Exec();
-                    needAdd.Clear();
-                }
+            writer.Flush();
+            stream.Flush();
+            writer.Close();
+            stream.Close();
 
-                Args = $"stash push -m \"{message}\"";
-                return Exec();
-            } else {
-                var temp = Path.GetTempFileName();
-                var stream = new FileStream(temp, FileMode.Create);
-                var writer = new StreamWriter(stream);
-
-                var needAdd = new List<string>();
-                foreach (var c in changes) {
-                    writer.WriteLine(c.Path);
-
-                    if (c.WorkTree == Models.Change.Status.Added || c.WorkTree == Models.Change.Status.Untracked) {
-                        needAdd.Add(c.Path);
-                        if (needAdd.Count > 10) {
-                            new Add(Cwd, needAdd).Exec();
-                            needAdd.Clear();
-                        }
-                    }
-                }
-                if (needAdd.Count > 0) {
-                    new Add(Cwd, needAdd).Exec();
-                    needAdd.Clear();
-                }
-
-                writer.Flush();
-                stream.Flush();
-                writer.Close();
-                stream.Close();
-
-                Args = $"stash push -m \"{message}\" --pathspec-from-file=\"{temp}\"";
-                var succ = Exec();
-                File.Delete(temp);
-                return succ;
-            }            
+            Args = $"stash push -m \"{message}\" --pathspec-from-file=\"{temp}\"";
+            var succ = Exec();
+            File.Delete(temp);
+            return succ;
         }
 
         public bool Apply(string name) {
@@ -79,5 +60,10 @@ namespace SourceGit.Commands {
             Args = $"stash drop -q {name}";
             return Exec();
         }
+
+        public bool Clear() {
+            Args = "stash clear";
+            return Exec();
+        }
     }
 }

src/Commands/StashChanges.cs

@@ -1,38 +0,0 @@
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     查看Stash中的修改
-    /// </summary>
-    public class StashChanges : Command {
-        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
-        private List<Models.Change> changes = new List<Models.Change>();
-
-        public StashChanges(string repo, string sha) {
-            Cwd = repo;
-            Args = $"diff --name-status --pretty=format: {sha}^ {sha}";
-        }
-
-        public List<Models.Change> Result() {
-            Exec();
-            return changes;
-        }
-
-        public override void OnReadline(string line) {
-            var match = REG_FORMAT.Match(line);
-            if (!match.Success) return;
-
-            var change = new Models.Change() { Path = match.Groups[2].Value };
-            var status = match.Groups[1].Value;
-
-            switch (status[0]) {
-            case 'M': change.Set(Models.Change.Status.Modified); changes.Add(change); break;
-            case 'A': change.Set(Models.Change.Status.Added); changes.Add(change); break;
-            case 'D': change.Set(Models.Change.Status.Deleted); changes.Add(change); break;
-            case 'R': change.Set(Models.Change.Status.Renamed); changes.Add(change); break;
-            case 'C': change.Set(Models.Change.Status.Copied); changes.Add(change); break;
-            }
-        }
-    }
-}

src/Commands/SubTree.cs

@@ -1,43 +0,0 @@
-using System;
-using System.IO;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     子树相关操作
-    /// </summary>
-    public class SubTree : Command {
-        private Action<string> handler = null;
-
-        public SubTree(string repo) {
-            Cwd = repo;
-            TraitErrorAsOutput = true;
-        }
-
-        public override void OnReadline(string line) {
-            handler?.Invoke(line);
-        }
-
-        public bool Add(string prefix, string source, string revision, bool squash, Action<string> onProgress) {
-            var path = Path.Combine(Cwd, prefix);
-            if (Directory.Exists(path)) return true;
-
-            handler = onProgress;
-            Args = $"subtree add --prefix=\"{prefix}\" {source} {revision}";
-            if (squash) Args += " --squash";
-            return Exec();
-        }
-
-        public void Pull(string prefix, string source, string branch, bool squash, Action<string> onProgress) {
-            handler = onProgress;
-            Args = $"subtree pull --prefix=\"{prefix}\" {source} {branch}";
-            if (squash) Args += " --squash";
-            Exec();
-        }
-
-        public void Push(string prefix, string source, string branch, Action<string> onProgress) {
-            handler = onProgress;
-            Args = $"subtree push --prefix=\"{prefix}\" {source} {branch}";
-            Exec();
-        }
-    }
-}

src/Commands/Submodule.cs

@@ -1,25 +1,22 @@
-using System;
+using System;
 
 namespace SourceGit.Commands {
-    /// <summary>
-    ///     子模块
-    /// </summary>
     public class Submodule : Command {
-        private Action<string> onProgress = null;
-
-        public Submodule(string cwd) {
-            Cwd = cwd;
+        public Submodule(string repo) {
+            WorkingDirectory = repo;
+            Context = repo;
         }
 
-        public bool Add(string url, string path, bool recursive, Action<string> handler) {
-            Args = $"submodule add {url} {path}";
-            onProgress = handler;
+        public bool Add(string url, string relativePath, bool recursive, Action<string> outputHandler) {
+            _outputHandler = outputHandler;
+            Args = $"submodule add {url} {relativePath}";
             if (!Exec()) return false;
 
             if (recursive) {
-                Args = $"submodule update --init --recursive -- {path}";
+                Args = $"submodule update --init --recursive -- {relativePath}";
                 return Exec();
             } else {
+                Args = $"submodule update --init -- {relativePath}";
                 return true;
             }
         }
@@ -29,16 +26,18 @@ namespace SourceGit.Commands {
             return Exec();
         }
 
-        public bool Delete(string path) {
-            Args = $"submodule deinit -f {path}";
+        public bool Delete(string relativePath) {
+            Args = $"submodule deinit -f {relativePath}";
             if (!Exec()) return false;
 
-            Args = $"rm -rf {path}";
+            Args = $"rm -rf {relativePath}";
             return Exec();
         }
 
-        public override void OnReadline(string line) {
-            onProgress?.Invoke(line);
+        protected override void OnReadline(string line) {
+            _outputHandler?.Invoke(line);
         }
+
+        private Action<string> _outputHandler;
     }
 }

src/Commands/Submodules.cs

@@ -1,28 +0,0 @@
-using System.Collections.Generic;
-using System.Text.RegularExpressions;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     获取子模块列表
-    /// </summary>
-    public class Submodules : Command {
-        private readonly Regex REG_FORMAT = new Regex(@"^[\-\+ ][0-9a-f]+\s(.*)\s\(.*\)$");
-        private List<string> modules = new List<string>();
-
-        public Submodules(string repo) {
-            Cwd = repo;
-            Args = "submodule status";
-        }
-
-        public List<string> Result() {
-            Exec();
-            return modules;
-        }
-
-        public override void OnReadline(string line) {
-            var match = REG_FORMAT.Match(line);
-            if (!match.Success) return;
-            modules.Add(match.Groups[1].Value);
-        }
-    }
-}

src/Commands/Tag.cs

@@ -1,38 +1,35 @@
+using System.Collections.Generic;
 using System.IO;
 
 namespace SourceGit.Commands {
-
-    /// <summary>
-    ///     标签相关指令
-    /// </summary>
-    public class Tag : Command {
-
-        public Tag(string repo) {
-            Cwd = repo;
-        }
-
-        public bool Add(string name, string basedOn, string message) {
-            Args = $"tag -a {name} {basedOn} ";
+    public static class Tag {
+        public static bool Add(string repo, string name, string basedOn, string message) {
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.Context = repo;
+            cmd.Args = $"tag -a {name} {basedOn} ";
 
             if (!string.IsNullOrEmpty(message)) {
                 string tmp = Path.GetTempFileName();
                 File.WriteAllText(tmp, message);
-                Args += $"-F \"{tmp}\"";
+                cmd.Args += $"-F \"{tmp}\"";
             } else {
-                Args += $"-m {name}";
+                cmd.Args += $"-m {name}";
             }
 
-            return Exec();
+            return cmd.Exec();
         }
 
-        public bool Delete(string name, bool push) {
-            Args = $"tag --delete {name}";
-            if (!Exec()) return false;
+        public static bool Delete(string repo, string name, List<Models.Remote> remotes) {
+            var cmd = new Command();
+            cmd.WorkingDirectory = repo;
+            cmd.Context = repo;
+            cmd.Args = $"tag --delete {name}";
+            if (!cmd.Exec()) return false;
 
-            if (push) {
-                var remotes = new Remotes(Cwd).Result();
+            if (remotes != null) {
                 foreach (var r in remotes) {
-                    new Push(Cwd, r.Name, name, true).Exec();
+                    new Push(repo, r.Name, name, true).Exec();
                 }
             }
 

src/Commands/Tags.cs

@@ -1,37 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     解析所有的Tags
-    /// </summary>
-    public class Tags : Command {
-        public static readonly string CMD = "for-each-ref --sort=-creatordate --format=\"$%(refname:short)$%(objectname)$%(*objectname)\" refs/tags";
-        private List<Models.Tag> loaded = new List<Models.Tag>();
-
-        public Tags(string path) {
-            Cwd = path;
-            Args = CMD;
-        }
-
-        public List<Models.Tag> Result() {
-            Exec();
-            return loaded;
-        }
-
-        public override void OnReadline(string line) {
-            var subs = line.Split(new char[] { '$' }, StringSplitOptions.RemoveEmptyEntries);
-            if (subs.Length == 2) {
-                loaded.Add(new Models.Tag() {
-                    Name = subs[0],
-                    SHA = subs[1],
-                });
-            } else if (subs.Length == 3) {
-                loaded.Add(new Models.Tag() {
-                    Name = subs[0],
-                    SHA = subs[2],
-                });
-            }
-        }
-    }
-}

src/Commands/Version.cs

@@ -1,18 +1,14 @@
-using System;
-
-namespace SourceGit.Commands {
-    /// <summary>
-    ///     检测git是否可用，并获取git版本信息
-    /// </summary>
+namespace SourceGit.Commands {
     public class Version : Command {
-        const string GitVersionPrefix = "git version ";
+        public Version() {
+            Args = "-v";
+            RaiseError = false;
+        }
+
         public string Query() {
-            Args = $"--version";
-            var result = ReadToEnd();
-            if (!result.IsSuccess || string.IsNullOrEmpty(result.Output)) return null;
-            var version = result.Output.Trim();
-            if (!version.StartsWith(GitVersionPrefix, StringComparison.Ordinal)) return null;
-            return version.Substring(GitVersionPrefix.Length);
+            var rs = ReadToEnd();
+            if (!rs.IsSuccess || string.IsNullOrWhiteSpace(rs.StdOut)) return string.Empty;
+            return rs.StdOut.Trim().Substring("git version ".Length);
         }
     }
 }

src/Converters/BookmarkConverters.cs

@@ -0,0 +1,12 @@
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+
+namespace SourceGit.Converters {
+    public static class BookmarkConverters {
+        public static FuncValueConverter<int, IBrush> ToBrush =
+            new FuncValueConverter<int, IBrush>(bookmark => Models.Bookmarks.Brushes[bookmark]);
+
+        public static FuncValueConverter<int, double> ToStrokeThickness =
+            new FuncValueConverter<int, double>(bookmark => bookmark == 0 ? 1.0 : 0);
+    }
+}

src/Converters/BoolConverters.cs

@@ -0,0 +1,8 @@
+using Avalonia.Data.Converters;
+
+namespace SourceGit.Converters {
+    public static class BoolConverters {
+        public static FuncValueConverter<bool, double> ToCommitOpacity =
+            new FuncValueConverter<bool, double>(x => x ? 1 : 0.5);
+    }
+}

src/Converters/BranchConverters.cs

@@ -0,0 +1,8 @@
+using Avalonia.Data.Converters;
+
+namespace SourceGit.Converters {
+    public static class BranchConverters {
+        public static FuncValueConverter<Models.Branch, string> ToName =
+            new FuncValueConverter<Models.Branch, string>(v => v.IsLocal ? v.Name : $"{v.Remote}/{v.Name}");
+    }
+}

src/Converters/ChangeViewModeConverters.cs

@@ -0,0 +1,28 @@
+using Avalonia.Controls;
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+
+namespace SourceGit.Converters {
+    public static class ChangeViewModeConverters {
+        public static FuncValueConverter<Models.ChangeViewMode, StreamGeometry> ToIcon =
+            new FuncValueConverter<Models.ChangeViewMode, StreamGeometry>(v => {
+                switch (v) {
+                case Models.ChangeViewMode.List:
+                    return App.Current?.FindResource("Icons.List") as StreamGeometry;
+                case Models.ChangeViewMode.Grid:
+                    return App.Current?.FindResource("Icons.Grid") as StreamGeometry;
+                default:
+                    return App.Current?.FindResource("Icons.Tree") as StreamGeometry;
+                }
+            });
+
+        public static FuncValueConverter<Models.ChangeViewMode, bool> IsList =
+            new FuncValueConverter<Models.ChangeViewMode, bool>(v => v == Models.ChangeViewMode.List);
+
+        public static FuncValueConverter<Models.ChangeViewMode, bool> IsGrid =
+            new FuncValueConverter<Models.ChangeViewMode, bool>(v => v == Models.ChangeViewMode.Grid);
+
+        public static FuncValueConverter<Models.ChangeViewMode, bool> IsTree =
+            new FuncValueConverter<Models.ChangeViewMode, bool>(v => v == Models.ChangeViewMode.Tree);
+    }
+}

src/Converters/DecoratorTypeConverters.cs

@@ -0,0 +1,34 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+
+namespace SourceGit.Converters {
+    public static class DecoratorTypeConverters {
+        public static FuncValueConverter<Models.DecoratorType, IBrush> ToBackground =
+            new FuncValueConverter<Models.DecoratorType, IBrush>(v => {
+                if (v == Models.DecoratorType.Tag) return Models.DecoratorResources.Backgrounds[0];
+                return Models.DecoratorResources.Backgrounds[1];
+            });
+
+        public static FuncValueConverter<Models.DecoratorType, StreamGeometry> ToIcon =
+            new FuncValueConverter<Models.DecoratorType, StreamGeometry>(v => {
+                var key = "Icons.Tag";
+                switch (v) {
+                case Models.DecoratorType.CurrentBranchHead:
+                    key = "Icons.Check";
+                    break;
+                case Models.DecoratorType.RemoteBranchHead:
+                    key = "Icons.Remote";
+                    break;
+                case Models.DecoratorType.LocalBranchHead:
+                    key = "Icons.Branch";
+                    break;
+                default:
+                    break;
+                }
+
+                return Application.Current?.FindResource(key) as StreamGeometry;
+            });
+    }
+}

src/Converters/IntConverters.cs

@@ -0,0 +1,27 @@
+using Avalonia.Data.Converters;
+using System;
+using System.Globalization;
+
+namespace SourceGit.Converters {
+    public static class IntConverters {
+        public static FuncValueConverter<int, bool> IsGreaterThanZero =
+            new FuncValueConverter<int, bool>(v => v > 0);
+
+        public static FuncValueConverter<int, bool> IsZero =
+            new FuncValueConverter<int, bool>(v => v == 0);
+
+        public class NotEqualConverter : IValueConverter {
+            public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+                int v = (int)value;
+                int target = (int)parameter;
+                return v != target;
+            }
+
+            public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+                throw new NotImplementedException();
+            }
+        }
+
+        public static NotEqualConverter NotEqual = new NotEqualConverter();
+    }
+}

src/Converters/LauncherPageConverters.cs

@@ -0,0 +1,28 @@
+using Avalonia.Collections;
+using Avalonia.Data.Converters;
+using System.Collections.Generic;
+
+namespace SourceGit.Converters {
+    public static class LauncherPageConverters {
+        public static FuncMultiValueConverter<object, bool> ToTabSeperatorVisible =
+            new FuncMultiValueConverter<object, bool>(v => {
+                if (v == null) return false;
+
+                var array = new List<object>();
+                array.AddRange(v);
+                if (array.Count != 3) return false;
+
+                var self = array[0] as ViewModels.LauncherPage;
+                if (self == null) return false;
+
+                var selected = array[1] as ViewModels.LauncherPage;
+                var collections = array[2] as AvaloniaList<ViewModels.LauncherPage>;
+
+                if (selected != null && collections != null && (self == selected || collections.IndexOf(self) + 1 == collections.IndexOf(selected))) {
+                    return false;
+                } else {
+                    return true;
+                }
+            });
+    }
+}

src/Converters/ListConverters.cs

@@ -0,0 +1,12 @@
+using Avalonia.Data.Converters;
+using System.Collections;
+
+namespace SourceGit.Converters {
+    public static class ListConverters {
+        public static FuncValueConverter<IList, string> ToCount =
+            new FuncValueConverter<IList, string>(v => $" ({v.Count})");
+
+        public static FuncValueConverter<IList, bool> IsNotNullOrEmpty =
+            new FuncValueConverter<IList, bool>(v => v != null && v.Count > 0);
+    }
+}

src/Converters/PathConverters.cs

@@ -0,0 +1,18 @@
+using Avalonia.Data.Converters;
+using System.IO;
+
+namespace SourceGit.Converters {
+    public static class PathConverters {
+        public static FuncValueConverter<string, string> PureFileName =
+            new FuncValueConverter<string, string>(fullpath => Path.GetFileName(fullpath) ?? "");
+
+        public static FuncValueConverter<string, string> PureDirectoryName =
+            new FuncValueConverter<string, string>(fullpath => Path.GetDirectoryName(fullpath) ?? "");
+
+        public static FuncValueConverter<string, string> TruncateIfTooLong =
+            new FuncValueConverter<string, string>(fullpath => {
+                if (fullpath.Length <= 50) return fullpath;
+                return fullpath.Substring(0, 20) + ".../" + Path.GetFileName(fullpath);
+            });
+    }
+}

src/Converters/StringConverters.cs

@@ -0,0 +1,56 @@
+using Avalonia.Data.Converters;
+using Avalonia.Styling;
+using System;
+using System.Globalization;
+
+namespace SourceGit.Converters {
+    public static class StringConverters {
+        public class ToLocaleConverter : IValueConverter {
+            public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+                return Models.Locale.Supported.Find(x => x.Key == value as string);
+            }
+
+            public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+                return (value as Models.Locale).Key;
+            }
+        }
+
+        public static ToLocaleConverter ToLocale = new ToLocaleConverter();
+
+        public class ToThemeConverter : IValueConverter {
+            public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+                var theme = (string)value;
+                if (theme.Equals("Light", StringComparison.OrdinalIgnoreCase)) {
+                    return ThemeVariant.Light;
+                } else if (theme.Equals("Dark", StringComparison.OrdinalIgnoreCase)) {
+                    return ThemeVariant.Dark;
+                } else {
+                    return ThemeVariant.Default;
+                }
+            }
+
+            public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+                var theme = (ThemeVariant)value;
+                return theme.Key;
+            }
+        }
+
+        public static ToThemeConverter ToTheme = new ToThemeConverter();
+
+        public class FormatByResourceKeyConverter : IValueConverter {
+            public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
+                var key = parameter as string;
+                return App.Text(key, value);
+            }
+
+            public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
+                throw new NotImplementedException();
+            }
+        }
+
+        public static FormatByResourceKeyConverter FormatByResourceKey = new FormatByResourceKeyConverter();
+
+        public static FuncValueConverter<string, string> ToShortSHA =
+            new FuncValueConverter<string, string>(v => v.Length > 10 ? v.Substring(0, 10) : v);
+    }
+}

src/Converters/WindowStateConverters.cs

@@ -0,0 +1,36 @@
+using Avalonia.Controls;
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+using Avalonia;
+using System.Runtime.InteropServices;
+
+namespace SourceGit.Converters {
+    public static class WindowStateConverters {
+        public static FuncValueConverter<WindowState, Thickness> ToContentMargin =
+            new FuncValueConverter<WindowState, Thickness>(state => {
+                if (state == WindowState.Maximized && RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
+                    return new Thickness(6);
+                } else {
+                    return new Thickness(0);
+                }
+            });
+
+        public static FuncValueConverter<WindowState, GridLength> ToTitleBarHeight =
+            new FuncValueConverter<WindowState, GridLength>(state => {
+                if (state == WindowState.Maximized && RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) {
+                    return new GridLength(30);
+                } else {
+                    return new GridLength(38);
+                }
+            });
+
+        public static FuncValueConverter<WindowState, StreamGeometry> ToMaxOrRestoreIcon =
+            new FuncValueConverter<WindowState, StreamGeometry>(state => {
+                if (state == WindowState.Maximized) {
+                    return Application.Current?.FindResource("Icons.Window.Restore") as StreamGeometry;
+                } else {
+                    return Application.Current?.FindResource("Icons.Window.Maximize") as StreamGeometry;
+                }
+            });
+    }
+}

src/FodyWeavers.xml

@@ -1,3 +0,0 @@
-<Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
-  <Costura />
-</Weavers>

src/FodyWeavers.xsd

@@ -1,141 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
-  <!-- This file was generated by Fody. Manual changes to this file will be lost when your project is rebuilt. -->
-  <xs:element name="Weavers">
-    <xs:complexType>
-      <xs:all>
-        <xs:element name="Costura" minOccurs="0" maxOccurs="1">
-          <xs:complexType>
-            <xs:all>
-              <xs:element minOccurs="0" maxOccurs="1" name="ExcludeAssemblies" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>A list of assembly names to exclude from the default action of "embed all Copy Local references", delimited with line breaks</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-              <xs:element minOccurs="0" maxOccurs="1" name="IncludeAssemblies" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>A list of assembly names to include from the default action of "embed all Copy Local references", delimited with line breaks.</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-              <xs:element minOccurs="0" maxOccurs="1" name="ExcludeRuntimeAssemblies" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>A list of runtime assembly names to exclude from the default action of "embed all Copy Local references", delimited with line breaks</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-              <xs:element minOccurs="0" maxOccurs="1" name="IncludeRuntimeAssemblies" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>A list of runtime assembly names to include from the default action of "embed all Copy Local references", delimited with line breaks.</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-              <xs:element minOccurs="0" maxOccurs="1" name="Unmanaged32Assemblies" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>A list of unmanaged 32 bit assembly names to include, delimited with line breaks.</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-              <xs:element minOccurs="0" maxOccurs="1" name="Unmanaged64Assemblies" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>A list of unmanaged 64 bit assembly names to include, delimited with line breaks.</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-              <xs:element minOccurs="0" maxOccurs="1" name="PreloadOrder" type="xs:string">
-                <xs:annotation>
-                  <xs:documentation>The order of preloaded assemblies, delimited with line breaks.</xs:documentation>
-                </xs:annotation>
-              </xs:element>
-            </xs:all>
-            <xs:attribute name="CreateTemporaryAssemblies" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>This will copy embedded files to disk before loading them into memory. This is helpful for some scenarios that expected an assembly to be loaded from a physical file.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="IncludeDebugSymbols" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>Controls if .pdbs for reference assemblies are also embedded.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="IncludeRuntimeReferences" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>Controls if runtime assemblies are also embedded.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="UseRuntimeReferencePaths" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>Controls whether the runtime assemblies are embedded with their full path or only with their assembly name.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="DisableCompression" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>Embedded assemblies are compressed by default, and uncompressed when they are loaded. You can turn compression off with this option.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="DisableCleanup" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>As part of Costura, embedded assemblies are no longer included as part of the build. This cleanup can be turned off.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="LoadAtModuleInit" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>Costura by default will load as part of the module initialization. This flag disables that behavior. Make sure you call CosturaUtility.Initialize() somewhere in your code.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="IgnoreSatelliteAssemblies" type="xs:boolean">
-              <xs:annotation>
-                <xs:documentation>Costura will by default use assemblies with a name like 'resources.dll' as a satellite resource and prepend the output path. This flag disables that behavior.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="ExcludeAssemblies" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>A list of assembly names to exclude from the default action of "embed all Copy Local references", delimited with |</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="IncludeAssemblies" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>A list of assembly names to include from the default action of "embed all Copy Local references", delimited with |.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="ExcludeRuntimeAssemblies" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>A list of runtime assembly names to exclude from the default action of "embed all Copy Local references", delimited with |</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="IncludeRuntimeAssemblies" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>A list of runtime assembly names to include from the default action of "embed all Copy Local references", delimited with |.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="Unmanaged32Assemblies" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>A list of unmanaged 32 bit assembly names to include, delimited with |.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="Unmanaged64Assemblies" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>A list of unmanaged 64 bit assembly names to include, delimited with |.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-            <xs:attribute name="PreloadOrder" type="xs:string">
-              <xs:annotation>
-                <xs:documentation>The order of preloaded assemblies, delimited with |.</xs:documentation>
-              </xs:annotation>
-            </xs:attribute>
-          </xs:complexType>
-        </xs:element>
-      </xs:all>
-      <xs:attribute name="VerifyAssembly" type="xs:boolean">
-        <xs:annotation>
-          <xs:documentation>'true' to run assembly verification (PEVerify) on the target assembly after all weavers have been executed.</xs:documentation>
-        </xs:annotation>
-      </xs:attribute>
-      <xs:attribute name="VerifyIgnoreCodes" type="xs:string">
-        <xs:annotation>
-          <xs:documentation>A comma-separated list of error codes that can be safely ignored in assembly verification.</xs:documentation>
-        </xs:annotation>
-      </xs:attribute>
-      <xs:attribute name="GenerateXsd" type="xs:boolean">
-        <xs:annotation>
-          <xs:documentation>'false' to turn off automatic generation of the XML Schema file.</xs:documentation>
-        </xs:annotation>
-      </xs:attribute>
-    </xs:complexType>
-  </xs:element>
-</xs:schema>

src/Models/ApplyWhiteSpaceMode.cs

@@ -0,0 +1,13 @@
+namespace SourceGit.Models {
+    public class ApplyWhiteSpaceMode {
+        public string Name { get; set; }
+        public string Desc { get; set; }
+        public string Arg { get; set; }
+
+        public ApplyWhiteSpaceMode(string n, string d, string a) {
+            Name = App.Text(n);
+            Desc = App.Text(d);
+            Arg = a;
+        }
+    }
+}

src/Models/AvatarManager.cs

@@ -0,0 +1,120 @@
+using Avalonia.Media.Imaging;
+using Avalonia.Threading;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace SourceGit.Models {
+    public interface IAvatarHost {
+        void OnAvatarResourceReady(string md5, Bitmap bitmap);
+    }
+
+    public static class AvatarManager {
+        static AvatarManager() {
+            _storePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "SourceGit", "avatars");
+            if (!Directory.Exists(_storePath)) Directory.CreateDirectory(_storePath);
+
+            Task.Run(() => {
+                while (true) {
+                    var md5 = null as string;
+
+                    lock (_synclock) {
+                        foreach (var one in _requesting) {
+                            md5 = one;
+                            break;
+                        }
+                    }
+
+                    if (md5 == null) {
+                        Thread.Sleep(100);
+                        continue;
+                    }
+
+                    var localFile = Path.Combine(_storePath, md5);
+                    var img = null as Bitmap;
+                    try {
+                        var client = new HttpClient() { Timeout = TimeSpan.FromSeconds(2) };
+                        var task = client.GetAsync($"https://cravatar.cn/avatar/{md5}?d=404");
+                        task.Wait();
+
+                        var rsp = task.Result;
+                        if (rsp.IsSuccessStatusCode) {
+                            using (var stream = rsp.Content.ReadAsStream()) {
+                                using (var writer = File.OpenWrite(localFile)) {
+                                    stream.CopyTo(writer);
+                                }
+                            }
+
+                            using (var reader = File.OpenRead(localFile)) {
+                                img = Bitmap.DecodeToWidth(reader, 128);
+                            }
+                        }
+                    } catch { }
+
+                    lock (_synclock) {
+                        _requesting.Remove(md5);
+                    }
+
+                    Dispatcher.UIThread.InvokeAsync(() => {
+                        if (_resources.ContainsKey(md5)) _resources[md5] = img;
+                        else _resources.Add(md5, img);
+                        if (img != null) NotifyResourceReady(md5, img);
+                    });
+                }
+            });
+        }
+
+        public static void Subscribe(IAvatarHost host) {
+            _avatars.Add(new WeakReference<IAvatarHost>(host));
+        }
+
+        public static Bitmap Request(string md5, bool forceRefetch = false) {
+            if (forceRefetch) {
+                if (_resources.ContainsKey(md5)) _resources.Remove(md5);                
+            } else {
+                if (_resources.ContainsKey(md5)) return _resources[md5];
+
+                var localFile = Path.Combine(_storePath, md5);
+                if (File.Exists(localFile)) {
+                    try {
+                        using (var stream = File.OpenRead(localFile)) {
+                            var img = Bitmap.DecodeToWidth(stream, 128);
+                            _resources.Add(md5, img);
+                            return img;
+                        }
+                    } catch { }
+                }
+            }
+
+            lock (_synclock) {
+                if (!_requesting.Contains(md5)) _requesting.Add(md5);
+            }
+
+            return null;
+        }
+
+        private static void NotifyResourceReady(string md5, Bitmap bitmap) {
+            List<WeakReference<IAvatarHost>> invalids = new List<WeakReference<IAvatarHost>>();
+            foreach (var avatar in _avatars) {
+                IAvatarHost retrived = null;
+                if (avatar.TryGetTarget(out retrived)) {
+                    retrived.OnAvatarResourceReady(md5, bitmap);
+                    break;
+                } else {
+                    invalids.Add(avatar);
+                }
+            }
+
+            foreach (var invalid in invalids) _avatars.Remove(invalid);
+        }
+
+        private static object _synclock = new object();
+        private static string _storePath = string.Empty;
+        private static List<WeakReference<IAvatarHost>> _avatars = new List<WeakReference<IAvatarHost>>();
+        private static Dictionary<string, Bitmap> _resources = new Dictionary<string, Bitmap>();
+        private static HashSet<string> _requesting = new HashSet<string>();
+    }
+}

src/Models/Blame.cs

@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+
+namespace SourceGit.Models {
+    public class BlameLineInfo {
+        public bool IsFirstInGroup { get; set; } = false;
+        public string CommitSHA { get; set; } = string.Empty;
+        public string Author { get; set; } = string.Empty;
+        public string Time { get; set; } = string.Empty;
+    }
+
+    public class BlameData {
+        public string File { get; set; } = string.Empty;
+        public List<BlameLineInfo> LineInfos { get; set; } = new List<BlameLineInfo>();
+        public string Content { get; set; } = string.Empty;
+        public bool IsBinary { get; set; } = false;
+    }
+}

src/Models/BlameLine.cs

@@ -1,12 +0,0 @@
-namespace SourceGit.Models {
-    /// <summary>
-    ///     追溯中的行信息
-    /// </summary>
-    public class BlameLine {
-        public string LineNumber { get; set; }
-        public string CommitSHA { get; set; }
-        public string Author { get; set; }
-        public string Time { get; set; }
-        public string Content { get; set; }
-    }
-}

src/Models/Bookmarks.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+
+namespace SourceGit.Models {
+    public static class Bookmarks {
+        public static readonly Avalonia.Media.IBrush[] Brushes = [
+            Avalonia.Media.Brushes.Transparent,
+            Avalonia.Media.Brushes.Red,
+            Avalonia.Media.Brushes.Orange,
+            Avalonia.Media.Brushes.Gold,
+            Avalonia.Media.Brushes.ForestGreen,
+            Avalonia.Media.Brushes.DarkCyan,
+            Avalonia.Media.Brushes.DeepSkyBlue,
+            Avalonia.Media.Brushes.Purple,
+        ];
+
+        public static readonly List<int> Supported = new List<int>();
+
+        static Bookmarks() {
+            for (int i = 0; i < Brushes.Length; i++) Supported.Add(i);
+        }
+    }
+}

src/Models/Branch.cs

@@ -1,7 +1,4 @@
-namespace SourceGit.Models {
-    /// <summary>
-    ///     分支数据
-    /// </summary>
+namespace SourceGit.Models {
     public class Branch {
         public string Name { get; set; }
         public string FullName { get; set; }

src/Models/BranchTreeNode.cs

@@ -0,0 +1,152 @@
+using System;
+using System.Collections.Generic;
+
+namespace SourceGit.Models {
+    public enum BranchTreeNodeType {
+        Remote,
+        Folder,
+        Branch,
+    }
+
+    public class BranchTreeNode {
+        public string Name { get; set; }
+        public BranchTreeNodeType Type { get; set; }
+        public object Backend { get; set; }
+        public bool IsExpanded { get; set; }
+        public List<BranchTreeNode> Children { get; set; } = new List<BranchTreeNode>();
+
+        public bool IsUpstreamTrackStatusVisible {
+            get => IsBranch && !string.IsNullOrEmpty((Backend as Branch).UpstreamTrackStatus);
+        }
+
+        public string UpstreamTrackStatus {
+            get => Type == BranchTreeNodeType.Branch ? (Backend as Branch).UpstreamTrackStatus : "";
+        }
+
+        public bool IsRemote {
+            get => Type == BranchTreeNodeType.Remote;
+        }
+
+        public bool IsFolder {
+            get => Type == BranchTreeNodeType.Folder;
+        }
+
+        public bool IsBranch {
+            get => Type == BranchTreeNodeType.Branch;
+        }
+
+        public bool IsCurrent {
+            get => IsBranch && (Backend as Branch).IsCurrent;
+        }        
+
+        public class Builder {
+            public List<BranchTreeNode> Locals => _locals;
+            public List<BranchTreeNode> Remotes => _remotes;
+
+            public void Run(List<Branch> branches, List<Remote> remotes) {                
+                foreach (var remote in remotes) {
+                    var path = $"remote/{remote.Name}";
+                    var node = new BranchTreeNode() {
+                        Name = remote.Name,
+                        Type = BranchTreeNodeType.Remote,
+                        Backend = remote,
+                        IsExpanded = _expanded.Contains(path),
+                    };
+
+                    _maps.Add(path, node);
+                    _remotes.Add(node);
+                }
+
+                foreach (var branch in branches) {
+                    if (branch.IsLocal) {
+                        MakeBranchNode(branch, _locals, "local");
+                    } else {
+                        var remote = _remotes.Find(x => x.Name == branch.Remote);
+                        if (remote != null) MakeBranchNode(branch, remote.Children, $"remote/{remote.Name}");
+                    }
+                }
+
+                SortNodes(_locals);
+                SortNodes(_remotes);
+            }
+
+            public void CollectExpandedNodes(List<BranchTreeNode> nodes, bool isLocal) {
+                CollectExpandedNodes(nodes, isLocal ? "local" : "remote");
+            }
+
+            private void CollectExpandedNodes(List<BranchTreeNode> nodes, string prefix) {
+                foreach (var node in nodes) {
+                    var path = prefix + "/" + node.Name;
+                    if (node.Type != BranchTreeNodeType.Branch && node.IsExpanded) _expanded.Add(path);
+                    CollectExpandedNodes(node.Children, path);
+                }
+            }
+
+            private void MakeBranchNode(Branch branch, List<BranchTreeNode> roots, string prefix) {
+                var subs = branch.Name.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
+
+                if (subs.Length == 1) {
+                    var node = new BranchTreeNode() {
+                        Name = subs[0],
+                        Type = BranchTreeNodeType.Branch,
+                        Backend = branch,
+                        IsExpanded = false,
+                    };
+                    roots.Add(node);
+                    return;
+                }
+
+                BranchTreeNode lastFolder = null;
+                string path = prefix;
+                for (int i = 0; i < subs.Length - 1; i++) {
+                    path = string.Concat(path, "/", subs[i]);
+                    if (_maps.ContainsKey(path)) {
+                        lastFolder = _maps[path];
+                    } else if (lastFolder == null) {
+                        lastFolder = new BranchTreeNode() {
+                            Name = subs[i],
+                            Type = BranchTreeNodeType.Folder,
+                            IsExpanded = _expanded.Contains(path),
+                        };
+                        roots.Add(lastFolder);
+                        _maps.Add(path, lastFolder);
+                    } else {
+                        var folder = new BranchTreeNode() {
+                            Name = subs[i],
+                            Type = BranchTreeNodeType.Folder,
+                            IsExpanded = _expanded.Contains(path),
+                        };
+                        _maps.Add(path, folder);
+                        lastFolder.Children.Add(folder);
+                        lastFolder = folder;
+                    }
+                }
+
+                var last = new BranchTreeNode() {
+                    Name = subs[subs.Length - 1],
+                    Type = BranchTreeNodeType.Branch,
+                    Backend = branch,
+                    IsExpanded = false,
+                };
+                lastFolder.Children.Add(last);
+            }
+
+            private void SortNodes(List<BranchTreeNode> nodes) {
+                nodes.Sort((l, r) => {
+                    if (l.Type == r.Type) {
+                        return l.Name.CompareTo(r.Name);
+                    } else {
+                        return (int)(l.Type) - (int)(r.Type);
+                    }
+                });
+
+                foreach (var node in nodes) SortNodes(node.Children);
+            }
+
+            private List<BranchTreeNode> _locals = new List<BranchTreeNode>();
+            private List<BranchTreeNode> _remotes = new List<BranchTreeNode>();
+            private HashSet<string> _expanded = new HashSet<string>();
+            private Dictionary<string, BranchTreeNode> _maps = new Dictionary<string, BranchTreeNode>();
+        }
+    }
+}

src/Models/CRLFMode.cs

@@ -0,0 +1,21 @@
+using System.Collections.Generic;
+
+namespace SourceGit.Models {
+    public class CRLFMode {
+        public string Name { get; set; }
+        public string Value { get; set; }
+        public string Desc { get; set; }
+
+        public static List<CRLFMode> Supported = new List<CRLFMode>() {
+            new CRLFMode("TRUE", "true", "Commit as LF, checkout as CRLF"),
+            new CRLFMode("INPUT", "input", "Only convert for commit"),
+            new CRLFMode("FALSE", "false", "Do NOT convert"),
+        };
+
+        public CRLFMode(string name, string value, string desc) {
+            Name = name;
+            Value = value;
+            Desc = desc;
+        }
+    }
+}

src/Models/CRLFOption.cs

@@ -1,25 +0,0 @@
-using System.Collections.Generic;
-
-namespace SourceGit.Models {
-
-    /// <summary>
-    ///     自动换行处理方式
-    /// </summary>
-    public class CRLFOption {
-        public string Display { get; set; }
-        public string Value { get; set; }
-        public string Desc { get; set; }
-
-        public static List<CRLFOption> Supported = new List<CRLFOption>() {
-            new CRLFOption("TRUE", "true", "Commit as LF, checkout as CRLF"),
-            new CRLFOption("INPUT", "input", "Only convert for commit"),
-            new CRLFOption("FALSE", "false", "Do NOT convert"),
-        };
-
-        public CRLFOption(string display, string value, string desc) {
-            Display = display;
-            Value = value;
-            Desc = desc;
-        }
-    }
-}

src/Models/Change.cs

@@ -1,52 +1,41 @@
-namespace SourceGit.Models {
+namespace SourceGit.Models {
+    public enum ChangeViewMode {
+        List,
+        Grid,
+        Tree,
+    }
+
+    public enum ChangeState {
+        None,
+        Modified,
+        Added,
+        Deleted,
+        Renamed,
+        Copied,
+        Unmerged,
+        Untracked
+    }
 
-    /// <summary>
-    ///     Git变更
-    /// </summary>
     public class Change {
-
-        /// <summary>
-        ///     显示模式
-        /// </summary>
-        public enum DisplayMode {
-            Tree,
-            List,
-            Grid,
-        }
-
-        /// <summary>
-        ///     变更状态码
-        /// </summary>
-        public enum Status {
-            None,
-            Modified,
-            Added,
-            Deleted,
-            Renamed,
-            Copied,
-            Unmerged,
-            Untracked,
-        }
-
-        public Status Index { get; set; }
-        public Status WorkTree { get; set; } = Status.None;
+        public ChangeState Index { get; set; }
+        public ChangeState WorkTree { get; set; } = ChangeState.None;
         public string Path { get; set; } = "";
         public string OriginalPath { get; set; } = "";
 
         public bool IsConflit {
             get {
-                if (Index == Status.Unmerged || WorkTree == Status.Unmerged) return true;
-                if (Index == Status.Added && WorkTree == Status.Added) return true;
-                if (Index == Status.Deleted && WorkTree == Status.Deleted) return true;
+                if (Index == ChangeState.Unmerged || WorkTree == ChangeState.Unmerged) return true;
+                if (Index == ChangeState.Added && WorkTree == ChangeState.Added) return true;
+                if (Index == ChangeState.Deleted && WorkTree == ChangeState.Deleted) return true;
                 return false;
             }
         }
 
-        public void Set(Status index, Status workTree = Status.None) {
+        public void Set(ChangeState index, ChangeState workTree = ChangeState.None) {
             Index = index;
             WorkTree = workTree;
 
-            if (index == Status.Renamed || workTree == Status.Renamed) {
+            if (index == ChangeState.Renamed || workTree == ChangeState.Renamed) {
                 var idx = Path.IndexOf('\t');
                 if (idx >= 0) {
                     OriginalPath = Path.Substring(0, idx);

src/Models/Commit.cs

@@ -1,16 +1,10 @@
+using Avalonia;
 using System;
 using System.Collections.Generic;
-using System.Windows;
 
 namespace SourceGit.Models {
-    /// <summary>
-    ///     提交记录
-    /// </summary>
     public class Commit {
-        private static readonly DateTime UTC_START = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).ToLocalTime();
-
         public string SHA { get; set; } = string.Empty;
-        public string ShortSHA => SHA.Substring(0, 8);
         public User Author { get; set; } = User.Invalid;
         public ulong AuthorTime { get; set; } = 0;
         public User Committer { get; set; } = User.Invalid;
@@ -23,10 +17,18 @@ namespace SourceGit.Models {
         public bool IsMerged { get; set; } = false;
         public Thickness Margin { get; set; } = new Thickness(0);
 
-        public string AuthorTimeStr => UTC_START.AddSeconds(AuthorTime).ToString("yyyy-MM-dd HH:mm:ss");
-        public string CommitterTimeStr => UTC_START.AddSeconds(CommitterTime).ToString("yyyy-MM-dd HH:mm:ss");
-        public string AuthorTimeShortStr => UTC_START.AddSeconds(AuthorTime).ToString("yyyy/MM/dd");
-        public string CommitterTimeShortStr => UTC_START.AddSeconds(CommitterTime).ToString("yyyy/MM/dd");
+        public string AuthorTimeStr => _utcStart.AddSeconds(AuthorTime).ToString("yyyy/MM/dd HH:mm:ss");
+        public string CommitterTimeStr => _utcStart.AddSeconds(CommitterTime).ToString("yyyy/MM/dd HH:mm:ss");
+        public string AuthorTimeShortStr => _utcStart.AddSeconds(AuthorTime).ToString("yyyy/MM/dd");
+        public string CommitterTimeShortStr => _utcStart.AddSeconds(CommitterTime).ToString("yyyy/MM/dd");
+
+        public bool IsCommitterVisible {
+            get => Author != Committer || AuthorTime != CommitterTime;
+        }
+
+        public string FullMessage {
+            get => string.IsNullOrWhiteSpace(Message) ? Subject : $"{Subject}\n\n{Message}";
+        }
 
         public static void ParseUserAndTime(string data, ref User user, ref ulong time) {
             var userEndIdx = data.IndexOf('>');
@@ -36,5 +38,7 @@ namespace SourceGit.Models {
             user = User.FindOrAdd(data.Substring(0, userEndIdx));
             time = timeEndIdx < 0 ? 0 : ulong.Parse(data.Substring(userEndIdx + 2, timeEndIdx - userEndIdx - 2));
         }
+
+        private static readonly DateTime _utcStart = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).ToLocalTime();
     }
 }

src/Models/CommitGraph.cs

@@ -0,0 +1,205 @@
+using Avalonia;
+using System;
+using System.Collections.Generic;
+
+namespace SourceGit.Models {
+    public class CommitGraph {
+        public class Path {
+            public List<Point> Points = new List<Point>();
+            public int Color = 0;
+        }
+
+        public class PathHelper {
+            public string Next;
+            public bool IsMerged;
+            public double LastX;
+            public double LastY;
+            public double EndY;
+            public Path Path;
+
+            public PathHelper(string next, bool isMerged, int color, Point start) {
+                Next = next;
+                IsMerged = isMerged;
+                LastX = start.X;
+                LastY = start.Y;
+                EndY = LastY;
+
+                Path = new Path();
+                Path.Color = color;
+                Path.Points.Add(start);
+            }
+
+            public PathHelper(string next, bool isMerged, int color, Point start, Point to) {
+                Next = next;
+                IsMerged = isMerged;
+                LastX = to.X;
+                LastY = to.Y;
+                EndY = LastY;
+
+                Path = new Path();
+                Path.Color = color;
+                Path.Points.Add(start);
+                Path.Points.Add(to);
+            }
+
+            public void Add(double x, double y, double halfHeight, bool isEnd = false) {
+                if (x > LastX) {
+                    Add(new Point(LastX, LastY));
+                    Add(new Point(x, y - halfHeight));
+                    if (isEnd) Add(new Point(x, y));
+                } else if (x < LastX) {
+                    if (y > LastY + halfHeight) Add(new Point(LastX, LastY + halfHeight));
+                    Add(new Point(x, y));
+                } else if (isEnd) {
+                    Add(new Point(x, y));
+                }
+
+                LastX = x;
+                LastY = y;
+            }
+
+            private void Add(Point p) {
+                if (EndY < p.Y) {
+                    Path.Points.Add(p);
+                    EndY = p.Y;
+                }
+            }
+        }
+
+        public class Link {
+            public Point Start;
+            public Point Control;
+            public Point End;
+            public int Color;
+        }
+
+        public class Dot {
+            public Point Center;
+            public int Color;
+        }
+
+        public List<Path> Paths { get; set; } = new List<Path>();
+        public List<Link> Links { get; set; } = new List<Link>();
+        public List<Dot> Dots { get; set; } = new List<Dot>();
+
+        public static CommitGraph Parse(List<Commit> commits, double rowHeight, int colorCount) {
+            double UNIT_WIDTH = 12;
+            double HALF_WIDTH = 6;
+            double UNIT_HEIGHT = rowHeight;
+            double HALF_HEIGHT = rowHeight / 2;
+
+            var temp = new CommitGraph();
+            var unsolved = new List<PathHelper>();
+            var mapUnsolved = new Dictionary<string, PathHelper>();
+            var ended = new List<PathHelper>();
+            var offsetY = -HALF_HEIGHT;
+            var colorIdx = 0;
+
+            foreach (var commit in commits) {
+                var major = null as PathHelper;
+                var isMerged = commit.IsMerged;
+                var oldCount = unsolved.Count;
+
+                // Update current y offset
+                offsetY += UNIT_HEIGHT;
+
+                // Find first curves that links to this commit and marks others that links to this commit ended.
+                double offsetX = -HALF_WIDTH;
+                foreach (var l in unsolved) {
+                    if (l.Next == commit.SHA) {
+                        if (major == null) {
+                            offsetX += UNIT_WIDTH;
+                            major = l;
+
+                            if (commit.Parents.Count > 0) {
+                                major.Next = commit.Parents[0];
+                                if (!mapUnsolved.ContainsKey(major.Next)) mapUnsolved.Add(major.Next, major);
+                            } else {
+                                major.Next = "ENDED";
+                                ended.Add(l);
+                            }
+
+                            major.Add(offsetX, offsetY, HALF_HEIGHT);
+                        } else {
+                            ended.Add(l);
+                        }
+
+                        isMerged = isMerged || l.IsMerged;
+                    } else {
+                        if (!mapUnsolved.ContainsKey(l.Next)) mapUnsolved.Add(l.Next, l);
+                        offsetX += UNIT_WIDTH;
+                        l.Add(offsetX, offsetY, HALF_HEIGHT);
+                    }
+                }
+
+                // Create new curve for branch head
+                if (major == null && commit.Parents.Count > 0) {
+                    offsetX += UNIT_WIDTH;
+                    major = new PathHelper(commit.Parents[0], isMerged, colorIdx, new Point(offsetX, offsetY));
+                    unsolved.Add(major);
+                    temp.Paths.Add(major.Path);
+                    colorIdx = (colorIdx + 1) % colorCount;
+                }
+
+                // Calculate link position of this commit.
+                Point position = new Point(offsetX, offsetY);
+                if (major != null) {
+                    major.IsMerged = isMerged;
+                    position = new Point(major.LastX, offsetY);
+                    temp.Dots.Add(new Dot() { Center = position, Color = major.Path.Color });
+                } else {
+                    temp.Dots.Add(new Dot() { Center = position, Color = 0 });
+                }
+
+                // Deal with parents
+                for (int j = 1; j < commit.Parents.Count; j++) {
+                    var parent = commit.Parents[j];
+                    if (mapUnsolved.ContainsKey(parent)) {
+                        var l = mapUnsolved[parent];
+                        var link = new Link();
+
+                        link.Start = position;
+                        link.End = new Point(l.LastX, offsetY + HALF_HEIGHT);
+                        link.Control = new Point(link.End.X, link.Start.Y);
+                        link.Color = l.Path.Color;
+                        temp.Links.Add(link);
+                    } else {
+                        offsetX += UNIT_WIDTH;
+
+                        // Create new curve for parent commit that not includes before
+                        var l = new PathHelper(commit.Parents[j], isMerged, colorIdx, position, new Point(offsetX, position.Y + HALF_HEIGHT));
+                        unsolved.Add(l);
+                        temp.Paths.Add(l.Path);
+                        colorIdx = (colorIdx + 1) % colorCount;
+                    }
+                }
+
+                // Remove ended curves from unsolved
+                foreach (var l in ended) {
+                    l.Add(position.X, position.Y, HALF_HEIGHT, true);
+                    unsolved.Remove(l);
+                }
+
+                // Margins & merge state (used by datagrid).
+                commit.IsMerged = isMerged;
+                commit.Margin = new Thickness(Math.Max(offsetX + HALF_WIDTH, oldCount * UNIT_WIDTH), 0, 0, 0);
+
+                // Clean up
+                ended.Clear();
+                mapUnsolved.Clear();
+            }
+
+            // Deal with curves haven't ended yet.
+            for (int i = 0; i < unsolved.Count; i++) {
+                var path = unsolved[i];
+                var endY = (commits.Count - 0.5) * UNIT_HEIGHT;
+
+                if (path.Path.Points.Count == 1 && path.Path.Points[0].Y == endY) continue;
+                path.Add((i + 0.5) * UNIT_WIDTH, endY + HALF_HEIGHT, HALF_HEIGHT, true);
+            }
+            unsolved.Clear();
+
+            return temp;
+        }
+    }
+}