enhance: Git LFS support

src/Commands/GitIgnore.cs

@@ -8,9 +8,9 @@ namespace SourceGit.Commands
         {
             var file = Path.Combine(repo, ".gitignore");
             if (!File.Exists(file))
-                File.WriteAllLines(file, [ pattern ]);
+                File.WriteAllLines(file, [pattern]);
             else
-                File.AppendAllLines(file, [ pattern ]);
+                File.AppendAllLines(file, [pattern]);
         }
     }
 }

src/Commands/LFS.cs

@@ -1,17 +1,22 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
+using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands
 {
-    public class LFS
+    public partial class LFS
     {
-        class PruneCmd : Command
+        [GeneratedRegex(@"^(.+)\s+(\w+)\s+\w+:(\d+)$")]
+        private static partial Regex REG_LOCK();
+
+        class SubCmd : Command
         {
-            public PruneCmd(string repo, Action<string> onProgress)
+            public SubCmd(string repo, string args, Action<string> onProgress)
             {
                 WorkingDirectory = repo;
                 Context = repo;
-                Args = "lfs prune";
+                Args = args;
                 TraitErrorAsOutput = true;
                 _outputHandler = onProgress;
             }
@@ -39,9 +44,73 @@ namespace SourceGit.Commands
             return content.Contains("git lfs pre-push");
         }
 
+        public bool Install()
+        {
+            return new SubCmd(_repo, $"lfs install", null).Exec();
+        }
+
+        public bool Track(string pattern, bool isFilenameMode = false)
+        {
+            var opt = isFilenameMode ? "--filename" : "";
+            return new SubCmd(_repo, $"lfs track {opt} \"{pattern}\"", null).Exec();
+        }
+
+        public void Fetch(Action<string> outputHandler)
+        {
+            new SubCmd(_repo, $"lfs fetch", outputHandler).Exec();
+        }
+
+        public void Pull(Action<string> outputHandler)
+        {
+            new SubCmd(_repo, $"lfs pull", outputHandler).Exec();
+        }
+
         public void Prune(Action<string> outputHandler)
         {
-            new PruneCmd(_repo, outputHandler).Exec();
+            new SubCmd(_repo, "lfs prune", outputHandler).Exec();
+        }
+
+        public List<Models.LFSLock> Locks()
+        {
+            var locks = new List<Models.LFSLock>();
+            var cmd = new SubCmd(_repo, "lfs locks", null);
+            var rs = cmd.ReadToEnd();
+            if (rs.IsSuccess)
+            {
+                var lines = rs.StdOut.Split(['\r', '\n'], StringSplitOptions.RemoveEmptyEntries);
+                foreach (var line in lines)
+                {
+                    var match = REG_LOCK().Match(line);
+                    if (match.Success)
+                    {
+                        locks.Add(new Models.LFSLock()
+                        {
+                            File = match.Groups[1].Value,
+                            User = match.Groups[2].Value,
+                            ID = long.Parse(match.Groups[3].Value),
+                        });
+                    }
+                }
+            }
+
+            return locks;
+        }
+
+        public bool Lock(string file)
+        {
+            return new SubCmd(_repo, $"lfs lock \"{file}\"", null).Exec();
+        }
+
+        public bool Unlock(string file, bool force)
+        {
+            var opt = force ? "-f" : "";
+            return new SubCmd(_repo, $"lfs unlock {opt} \"{file}\"", null).Exec();
+        }
+
+        public bool Unlock(long id, bool force)
+        {
+            var opt = force ? "-f" : "";
+            return new SubCmd(_repo, $"lfs unlock {opt} --id={id}", null).Exec();
         }
 
         private readonly string _repo;

src/Models/LFSLock.cs

@@ -0,0 +1,9 @@
+namespace SourceGit.Models
+{
+    public class LFSLock
+    {
+        public string File { get; set; } = string.Empty;
+        public string User { get; set; } = string.Empty;
+        public long ID { get; set; } = 0;
+    }
+}

src/Resources/Icons.axaml

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src/Resources/Locales/en_US.axaml

@@ -228,6 +228,24 @@
   <x:String x:Key="Text.GitFlow.StartRelease" xml:space="preserve">Start Release ...</x:String>
   <x:String x:Key="Text.GitFlow.StartReleaseTitle" xml:space="preserve">FLOW - Start Release</x:String>
   <x:String x:Key="Text.GitFlow.TagPrefix" xml:space="preserve">Version Tag Prefix :</x:String>
+  <x:String x:Key="Text.GitLFS" xml:space="preserve">Git LFS</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch" xml:space="preserve">Fetch ...</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch.Title" xml:space="preserve">Fetch LFS Objects</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch.Tips" xml:space="preserve">Run `git lfs fetch` to download Git LFS objects. This does not update the working copy.</x:String>
+  <x:String x:Key="Text.GitLFS.Install" xml:space="preserve">Install Git LFS hooks</x:String>
+  <x:String x:Key="Text.GitLFS.Locks" xml:space="preserve">Show Locks</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Empty" xml:space="preserve">No Locked Files</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Lock" xml:space="preserve">Lock</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Title" xml:space="preserve">LFS Locks</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Unlock" xml:space="preserve">Unlock</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.UnlockForce" xml:space="preserve">Force Unlock</x:String>
+  <x:String x:Key="Text.GitLFS.Prune" xml:space="preserve">Prune</x:String>
+  <x:String x:Key="Text.GitLFS.Prune.Tips" xml:space="preserve">Run `git lfs prune` to delete old LFS files from local storage</x:String>
+  <x:String x:Key="Text.GitLFS.Pull" xml:space="preserve">Pull ...</x:String>
+  <x:String x:Key="Text.GitLFS.Pull.Title" xml:space="preserve">Pull LFS Objects</x:String>
+  <x:String x:Key="Text.GitLFS.Pull.Tips" xml:space="preserve">Run `git lfs pull` to download all Git LFS files for current ref &amp; checkout</x:String>
+  <x:String x:Key="Text.GitLFS.Track" xml:space="preserve">Track files named '{0}'</x:String>
+  <x:String x:Key="Text.GitLFS.TrackByExtension" xml:space="preserve">Track all *{0} files</x:String>
   <x:String x:Key="Text.Histories" xml:space="preserve">Histories</x:String>
   <x:String x:Key="Text.Histories.DisplayMode" xml:space="preserve">Switch Horizontal/Vertical Layout</x:String>
   <x:String x:Key="Text.Histories.GraphMode" xml:space="preserve">Switch Curve/Polyline Graph Mode</x:String>
@@ -373,7 +391,7 @@
   <x:String x:Key="Text.RenameBranch.Target" xml:space="preserve">Branch :</x:String>
   <x:String x:Key="Text.Repository.Abort" xml:space="preserve">ABORT</x:String>
   <x:String x:Key="Text.Repository.Clean" xml:space="preserve">Cleanup(GC &amp; Prune)</x:String>
-  <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">Run `gc` command and do `lfs prune` if LFS is installed.</x:String>
+  <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">Run `git gc` command for this repository.</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">Configure this repository</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">CONTINUE</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">Open In File Browser</x:String>
@@ -477,7 +495,7 @@
   <x:String x:Key="Text.Welcome.Search" xml:space="preserve">Search Repositories ...</x:String>
   <x:String x:Key="Text.Welcome.Sort" xml:space="preserve">Sort</x:String>
   <x:String x:Key="Text.WorkingCopy" xml:space="preserve">Changes</x:String>
-  <x:String x:Key="Text.WorkingCopy.AddToGitIgnore" xml:space="preserve">Add To .gitignore ...</x:String>
+  <x:String x:Key="Text.WorkingCopy.AddToGitIgnore" xml:space="preserve">Git Ignore</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.Extension" xml:space="preserve">Ignore all *{0} files</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.ExtensionInSameFolder" xml:space="preserve">Ignore *{0} files in the same folder</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.InSameFolder" xml:space="preserve">Ignore files in the same folder</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -231,6 +231,24 @@
   <x:String x:Key="Text.GitFlow.StartRelease" xml:space="preserve">开始版本分支...</x:String>
   <x:String x:Key="Text.GitFlow.StartReleaseTitle" xml:space="preserve">开始版本分支</x:String>
   <x:String x:Key="Text.GitFlow.TagPrefix" xml:space="preserve">版本标签前缀 ：</x:String>
+  <x:String x:Key="Text.GitLFS" xml:space="preserve">Git LFS</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch" xml:space="preserve">拉取LFS对象 (fetch) ...</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch.Title" xml:space="preserve">拉取LFS对象</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch.Tips" xml:space="preserve">执行`git lfs prune`命令，下载远程LFS对象，但不会更新工作副本。</x:String>
+  <x:String x:Key="Text.GitLFS.Install" xml:space="preserve">启用Git LFS支持</x:String>
+  <x:String x:Key="Text.GitLFS.Locks" xml:space="preserve">显示LFS对象锁</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Empty" xml:space="preserve">没有锁定的LFS文件</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Lock" xml:space="preserve">锁定</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Title" xml:space="preserve">LFS对象锁状态</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Unlock" xml:space="preserve">解锁</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.UnlockForce" xml:space="preserve">强制解锁</x:String>
+  <x:String x:Key="Text.GitLFS.Prune" xml:space="preserve">精简本地LFS对象存储</x:String>
+  <x:String x:Key="Text.GitLFS.Prune.Tips" xml:space="preserve">运行`git lfs prune`命令，从本地存储中精简当前版本不需要的LFS对象</x:String>
+  <x:String x:Key="Text.GitLFS.Pull" xml:space="preserve">拉回LFS对象 (pull) ...</x:String>
+  <x:String x:Key="Text.GitLFS.Pull.Title" xml:space="preserve">拉回LFS对象</x:String>
+  <x:String x:Key="Text.GitLFS.Pull.Tips" xml:space="preserve">运行`git lfs pull`命令，下载远程LFS对象并更新工作副本。</x:String>
+  <x:String x:Key="Text.GitLFS.Track" xml:space="preserve">跟踪名为'{0}'的文件</x:String>
+  <x:String x:Key="Text.GitLFS.TrackByExtension" xml:space="preserve">跟踪所有 *{0} 文件</x:String>
   <x:String x:Key="Text.Histories" xml:space="preserve">历史记录</x:String>
   <x:String x:Key="Text.Histories.DisplayMode" xml:space="preserve">切换横向/纵向显示</x:String>
   <x:String x:Key="Text.Histories.GraphMode" xml:space="preserve">切换曲线/折线显示</x:String>
@@ -376,7 +394,7 @@
   <x:String x:Key="Text.RenameBranch.Target" xml:space="preserve">分支 ：</x:String>
   <x:String x:Key="Text.Repository.Abort" xml:space="preserve">终止合并</x:String>
   <x:String x:Key="Text.Repository.Clean" xml:space="preserve">清理本仓库(GC)</x:String>
-  <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">本操作将执行`gc`，对于启用LFS的仓库也会执行`lfs prune`。</x:String>
+  <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">本操作将执行`git gc`命令。</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">配置本仓库</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">下一步</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">在文件浏览器中打开</x:String>
@@ -480,7 +498,7 @@
   <x:String x:Key="Text.Welcome.Search" xml:space="preserve">快速查找仓库...</x:String>
   <x:String x:Key="Text.Welcome.Sort" xml:space="preserve">排序</x:String>
   <x:String x:Key="Text.WorkingCopy" xml:space="preserve">本地更改</x:String>
-  <x:String x:Key="Text.WorkingCopy.AddToGitIgnore" xml:space="preserve">添加至 .gitignore 忽略列表 ...</x:String>
+  <x:String x:Key="Text.WorkingCopy.AddToGitIgnore" xml:space="preserve">添加至 .gitignore 忽略列表</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.Extension" xml:space="preserve">忽略所有 *{0} 文件</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.ExtensionInSameFolder" xml:space="preserve">忽略同目录下所有 *{0} 文件</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.InSameFolder" xml:space="preserve">忽略同目录下所有文件</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -231,6 +231,24 @@
   <x:String x:Key="Text.GitFlow.StartRelease" xml:space="preserve">開始版本分支...</x:String>
   <x:String x:Key="Text.GitFlow.StartReleaseTitle" xml:space="preserve">開始版本分支</x:String>
   <x:String x:Key="Text.GitFlow.TagPrefix" xml:space="preserve">版本標籤字首 ：</x:String>
+  <x:String x:Key="Text.GitLFS" xml:space="preserve">Git LFS</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch" xml:space="preserve">拉取LFS物件 (fetch) ...</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch.Title" xml:space="preserve">拉取LFS物件</x:String>
+  <x:String x:Key="Text.GitLFS.Fetch.Tips" xml:space="preserve">執行`git lfs fetch`命令，下載遠端LFS物件，但不會更新工作副本。</x:String>
+  <x:String x:Key="Text.GitLFS.Install" xml:space="preserve">啟用Git LFS支援</x:String>
+  <x:String x:Key="Text.GitLFS.Locks" xml:space="preserve">顯示LFS物件鎖</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Empty" xml:space="preserve">沒有鎖定的LFS物件</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Lock" xml:space="preserve">鎖定</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Title" xml:space="preserve">LFS物件鎖</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.Unlock" xml:space="preserve">解鎖</x:String>
+  <x:String x:Key="Text.GitLFS.Locks.UnlockForce" xml:space="preserve">強制解鎖</x:String>
+  <x:String x:Key="Text.GitLFS.Prune" xml:space="preserve">精簡本地LFS物件存儲</x:String>
+  <x:String x:Key="Text.GitLFS.Prune.Tips" xml:space="preserve">執行`git lfs prune`命令，從本地存儲中精簡當前版本不需要的LFS物件</x:String>
+  <x:String x:Key="Text.GitLFS.Pull" xml:space="preserve">拉回LFS物件 (pull) ...</x:String>
+  <x:String x:Key="Text.GitLFS.Pull.Title" xml:space="preserve">拉回LFS物件</x:String>
+  <x:String x:Key="Text.GitLFS.Pull.Tips" xml:space="preserve">執行`git lfs pull`命令，下載遠端LFS物件并更新工作副本。</x:String>
+  <x:String x:Key="Text.GitLFS.Track" xml:space="preserve">跟蹤名為'{0}'的檔案</x:String>
+  <x:String x:Key="Text.GitLFS.TrackByExtension" xml:space="preserve">跟蹤所有 *{0} 檔案</x:String>
   <x:String x:Key="Text.Histories" xml:space="preserve">歷史記錄</x:String>
   <x:String x:Key="Text.Histories.DisplayMode" xml:space="preserve">切換橫向/縱向顯示</x:String>
   <x:String x:Key="Text.Histories.GraphMode" xml:space="preserve">切換曲線/折線顯示</x:String>
@@ -376,7 +394,7 @@
   <x:String x:Key="Text.RenameBranch.Target" xml:space="preserve">分支 ：</x:String>
   <x:String x:Key="Text.Repository.Abort" xml:space="preserve">終止合併</x:String>
   <x:String x:Key="Text.Repository.Clean" xml:space="preserve">清理本倉庫(GC)</x:String>
-  <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">本操作將執行`gc`，對於啟用LFS的倉庫也會執行`lfs prune`。</x:String>
+  <x:String x:Key="Text.Repository.CleanTips" xml:space="preserve">本操作將執行`git gc`命令。</x:String>
   <x:String x:Key="Text.Repository.Configure" xml:space="preserve">配置本倉庫</x:String>
   <x:String x:Key="Text.Repository.Continue" xml:space="preserve">下一步</x:String>
   <x:String x:Key="Text.Repository.Explore" xml:space="preserve">在檔案瀏覽器中開啟</x:String>
@@ -480,7 +498,7 @@
   <x:String x:Key="Text.Welcome.Search" xml:space="preserve">快速查詢倉庫...</x:String>
   <x:String x:Key="Text.Welcome.Sort" xml:space="preserve">排序</x:String>
   <x:String x:Key="Text.WorkingCopy" xml:space="preserve">本地更改</x:String>
-  <x:String x:Key="Text.WorkingCopy.AddToGitIgnore" xml:space="preserve">添加至 .gitignore 忽略清單 ...</x:String>
+  <x:String x:Key="Text.WorkingCopy.AddToGitIgnore" xml:space="preserve">添加至 .gitignore 忽略清單</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.Extension" xml:space="preserve">忽略所有 *{0} 檔案</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.ExtensionInSameFolder" xml:space="preserve">忽略同路徑下所有 *{0} 檔案</x:String>
   <x:String x:Key="Text.WorkingCopy.AddToGitIgnore.InSameFolder" xml:space="preserve">忽略同路徑下所有檔案</x:String>

src/ViewModels/Cleanup.cs

@@ -18,14 +18,6 @@ namespace SourceGit.ViewModels
             return Task.Run(() =>
             {
                 new Commands.GC(_repo.FullPath, SetProgressDescription).Exec();
-
-                var lfs = new Commands.LFS(_repo.FullPath);
-                if (lfs.IsEnabled())
-                {
-                    SetProgressDescription("Run LFS prune ...");
-                    lfs.Prune(SetProgressDescription);
-                }
-
                 CallUIThread(() => _repo.SetWatcherEnabled(true));
                 return true;
             });

src/ViewModels/LFSFetch.cs

@@ -0,0 +1,27 @@
+using System.Threading.Tasks;
+
+namespace SourceGit.ViewModels
+{
+    public class LFSFetch : Popup
+    {
+        public LFSFetch(Repository repo)
+        {
+            _repo = repo;
+            View = new Views.LFSFetch() { DataContext = this };
+        }
+
+        public override Task<bool> Sure()
+        {
+            _repo.SetWatcherEnabled(false);
+            ProgressDescription = $"Fetching LFS objects from remote ...";
+            return Task.Run(() =>
+            {
+                new Commands.LFS(_repo.FullPath).Fetch(SetProgressDescription);
+                CallUIThread(() => _repo.SetWatcherEnabled(true));
+                return true;
+            });
+        }
+
+        private readonly Repository _repo = null;
+    }
+}

src/ViewModels/LFSLocks.cs

@@ -0,0 +1,73 @@
+using System.Threading.Tasks;
+
+using Avalonia.Collections;
+using Avalonia.Threading;
+
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace SourceGit.ViewModels
+{
+    public class LFSLocks : ObservableObject
+    {
+        public bool IsLoading
+        {
+            get => _isLoading;
+            private set => SetProperty(ref _isLoading, value);
+        }
+
+        public bool IsEmpty
+        {
+            get => _isEmpty;
+            private set => SetProperty(ref _isEmpty, value);
+        }
+
+        public AvaloniaList<Models.LFSLock> Locks
+        {
+            get;
+            private set;
+        }
+
+        public LFSLocks(string repo)
+        {
+            _repo = repo;
+            Locks = new AvaloniaList<Models.LFSLock>();
+
+            Task.Run(() =>
+            {
+                var collect = new Commands.LFS(_repo).Locks();
+                Dispatcher.UIThread.Invoke(() =>
+                {
+                    if (collect.Count > 0)
+                        Locks.AddRange(collect);
+
+                    IsLoading = false;
+                    IsEmpty = collect.Count == 0;
+                });
+            });
+        }
+
+        public void Unlock(Models.LFSLock lfsLock, bool force)
+        {
+            if (_isLoading)
+                return;
+
+            IsLoading = true;
+            Task.Run(() =>
+            {
+                var succ = new Commands.LFS(_repo).Unlock(lfsLock.ID, force);
+                Dispatcher.UIThread.Invoke(() =>
+                {
+                    if (succ)
+                        Locks.Remove(lfsLock);
+
+                    IsLoading = false;
+                    IsEmpty = Locks.Count == 0;
+                });
+            });
+        }
+
+        private string _repo = string.Empty;
+        private bool _isLoading = true;
+        private bool _isEmpty = false;
+    }
+}

src/ViewModels/LFSPrune.cs

@@ -0,0 +1,28 @@
+using System.Threading.Tasks;
+
+namespace SourceGit.ViewModels
+{
+    public class LFSPrune : Popup
+    {
+        public LFSPrune(Repository repo)
+        {
+            _repo = repo;
+            View = new Views.LFSPrune() { DataContext = this };
+        }
+
+        public override Task<bool> Sure()
+        {
+            _repo.SetWatcherEnabled(false);
+            ProgressDescription = "LFS prune ...";
+
+            return Task.Run(() =>
+            {
+                new Commands.LFS(_repo.FullPath).Prune(SetProgressDescription);
+                CallUIThread(() => _repo.SetWatcherEnabled(true));
+                return true;
+            });
+        }
+
+        private readonly Repository _repo = null;
+    }
+}

src/ViewModels/LFSPull.cs

@@ -0,0 +1,27 @@
+using System.Threading.Tasks;
+
+namespace SourceGit.ViewModels
+{
+    public class LFSPull : Popup
+    {
+        public LFSPull(Repository repo)
+        {
+            _repo = repo;
+            View = new Views.LFSPull() { DataContext = this };
+        }
+
+        public override Task<bool> Sure()
+        {
+            _repo.SetWatcherEnabled(false);
+            ProgressDescription = $"Pull LFS objects from remote ...";
+            return Task.Run(() =>
+            {
+                new Commands.LFS(_repo.FullPath).Pull(SetProgressDescription);
+                CallUIThread(() => _repo.SetWatcherEnabled(true));
+                return true;
+            });
+        }
+
+        private readonly Repository _repo = null;
+    }
+}

src/ViewModels/Repository.cs

@@ -814,7 +814,7 @@ namespace SourceGit.ViewModels
             {
                 var init = new MenuItem();
                 init.Header = App.Text("GitFlow.Init");
-                init.Icon = App.CreateMenuIcon("Icons.GitFlow.Init");
+                init.Icon = App.CreateMenuIcon("Icons.Init");
                 init.Click += (o, e) =>
                 {
                     if (PopupHost.CanCreatePopup())
@@ -826,6 +826,95 @@ namespace SourceGit.ViewModels
             return menu;
         }
 
+        public ContextMenu CreateContextMenuForGitLFS()
+        {
+            var menu = new ContextMenu();
+            menu.Placement = PlacementMode.BottomEdgeAlignedLeft;
+
+            var lfs = new Commands.LFS(_fullpath);
+            if (lfs.IsEnabled())
+            {
+                var fetch = new MenuItem();
+                fetch.Header = App.Text("GitLFS.Fetch");
+                fetch.Icon = App.CreateMenuIcon("Icons.Fetch");
+                fetch.IsEnabled = Remotes.Count > 0;
+                fetch.Click += (o, e) =>
+                {
+                    if (PopupHost.CanCreatePopup())
+                    {
+                        if (Remotes.Count == 1)
+                            PopupHost.ShowAndStartPopup(new LFSFetch(this));
+                        else
+                            PopupHost.ShowPopup(new LFSFetch(this));
+                    }
+
+                    e.Handled = true;
+                };
+                menu.Items.Add(fetch);
+
+                var pull = new MenuItem();
+                pull.Header = App.Text("GitLFS.Pull");
+                pull.Icon = App.CreateMenuIcon("Icons.Pull");
+                pull.IsEnabled = Remotes.Count > 0;
+                pull.Click += (o, e) =>
+                {
+                    if (PopupHost.CanCreatePopup())
+                    {
+                        if (Remotes.Count == 1)
+                            PopupHost.ShowAndStartPopup(new LFSPull(this));
+                        else
+                            PopupHost.ShowPopup(new LFSPull(this));
+                    }
+
+                    e.Handled = true;
+                };
+                menu.Items.Add(pull);
+
+                var prune = new MenuItem();
+                prune.Header = App.Text("GitLFS.Prune");
+                prune.Icon = App.CreateMenuIcon("Icons.Clean");
+                prune.Click += (o, e) =>
+                {
+                    if (PopupHost.CanCreatePopup())
+                        PopupHost.ShowAndStartPopup(new LFSPrune(this));
+
+                    e.Handled = true;
+                };
+                menu.Items.Add(new MenuItem() { Header = "-" });
+                menu.Items.Add(prune);
+
+                var locks = new MenuItem();
+                locks.Header = App.Text("GitLFS.Locks");
+                locks.Icon = App.CreateMenuIcon("Icons.Lock");
+                locks.Click += (o, e) =>
+                {
+                    var dialog = new Views.LFSLocks() { DataContext = new LFSLocks(_fullpath) };
+                    dialog.Show(App.GetTopLevel() as Window);
+
+                    e.Handled = true;
+                };
+                menu.Items.Add(new MenuItem() { Header = "-" });
+                menu.Items.Add(locks);
+            }
+            else
+            {
+                var install = new MenuItem();
+                install.Header = App.Text("GitLFS.Install");
+                install.Icon = App.CreateMenuIcon("Icons.Init");
+                install.Click += (o, e) =>
+                {
+                    var succ = new Commands.LFS(_fullpath).Install();
+                    if (succ)
+                        App.SendNotification(_fullpath, $"LFS enabled successfully!");
+
+                    e.Handled = true;
+                };
+                menu.Items.Add(install);
+            }
+
+            return menu;
+        }
+
         public ContextMenu CreateContextMenuForLocalBranch(Models.Branch branch)
         {
             var menu = new ContextMenu();

src/ViewModels/WorkingCopy.cs

@@ -557,6 +557,8 @@ namespace SourceGit.ViewModels
                     menu.Items.Add(history);
                     menu.Items.Add(new MenuItem() { Header = "-" });
 
+                    var extension = Path.GetExtension(change.Path);
+                    var hasExtra = false;
                     if (change.WorkTree == Models.ChangeState.Untracked)
                     {
                         var isRooted = change.Path.IndexOf('/', StringComparison.Ordinal) <= 0;
@@ -583,7 +585,6 @@ namespace SourceGit.ViewModels
                         };
                         addToIgnore.Items.Add(byParentFolder);
 
-                        var extension = Path.GetExtension(change.Path);
                         if (!string.IsNullOrEmpty(extension))
                         {
                             var byExtension = new MenuItem();
@@ -607,8 +608,77 @@ namespace SourceGit.ViewModels
                         }
 
                         menu.Items.Add(addToIgnore);
-                        menu.Items.Add(new MenuItem() { Header = "-" });
+                        hasExtra = true;
                     }
+
+                    var lfsEnabled = new Commands.LFS(_repo.FullPath).IsEnabled();
+                    if (lfsEnabled)
+                    {
+                        var lfs = new MenuItem();
+                        lfs.Header = App.Text("GitLFS");
+                        lfs.Icon = App.CreateMenuIcon("Icons.LFS");
+
+                        var filename = Path.GetFileName(change.Path);
+                        var lfsTrackThisFile = new MenuItem();
+                        lfsTrackThisFile.Header = App.Text("GitLFS.Track", filename);
+                        lfsTrackThisFile.Click += async (_, e) =>
+                        {
+                            var succ = await Task.Run(() => new Commands.LFS(_repo.FullPath).Track(filename, true));
+                            if (succ)
+                                App.SendNotification(_repo.FullPath, $"Tracking file named {filename} successfully!");
+
+                            e.Handled = true;
+                        };
+                        lfs.Items.Add(lfsTrackThisFile);
+
+                        if (!string.IsNullOrEmpty(extension))
+                        {
+                            var lfsTrackByExtension = new MenuItem();
+                            lfsTrackByExtension.Header = App.Text("GitLFS.TrackByExtension", extension);
+                            lfsTrackByExtension.Click += async (_, e) =>
+                            {
+                                var succ = await Task.Run(() => new Commands.LFS(_repo.FullPath).Track("*" + extension, false));
+                                if (succ)
+                                    App.SendNotification(_repo.FullPath, $"Tracking all *{extension} files successfully!");
+
+                                e.Handled = true;
+                            };
+                            lfs.Items.Add(lfsTrackByExtension);
+                        }
+
+                        var lfsLock = new MenuItem();
+                        lfsLock.Header = App.Text("GitLFS.Locks.Lock");
+                        lfsLock.Icon = App.CreateMenuIcon("Icons.Lock");
+                        lfsLock.Click += async (_, e) =>
+                        {
+                            var succ = await Task.Run(() => new Commands.LFS(_repo.FullPath).Lock(change.Path));
+                            if (succ)
+                                App.SendNotification(_repo.FullPath, $"Lock file \"{change.Path}\" successfully!");
+
+                            e.Handled = true;
+                        };
+                        lfs.Items.Add(new MenuItem() { Header = "-" });
+                        lfs.Items.Add(lfsLock);
+
+                        var lfsUnlock = new MenuItem();
+                        lfsUnlock.Header = App.Text("GitLFS.Locks.Unlock");
+                        lfsUnlock.Icon = App.CreateMenuIcon("Icons.Unlock");
+                        lfsUnlock.Click += async (_, e) =>
+                        {
+                            var succ = await Task.Run(() => new Commands.LFS(_repo.FullPath).Unlock(change.Path, false));
+                            if (succ)
+                                App.SendNotification(_repo.FullPath, $"Unlock file \"{change.Path}\" successfully!");
+
+                            e.Handled = true;
+                        };
+                        lfs.Items.Add(lfsUnlock);
+
+                        menu.Items.Add(lfs);
+                        hasExtra = true;
+                    }
+                    
+                    if (hasExtra)
+                        menu.Items.Add(new MenuItem() { Header = "-" });
                 }
 
                 var copy = new MenuItem();
@@ -702,9 +772,8 @@ namespace SourceGit.ViewModels
                 stash.Click += (_, e) =>
                 {
                     if (PopupHost.CanCreatePopup())
-                    {
                         PopupHost.ShowPopup(new StashChanges(_repo, _selectedUnstaged, false));
-                    }
+
                     e.Handled = true;
                 };
 
@@ -797,9 +866,8 @@ namespace SourceGit.ViewModels
                 stash.Click += (_, e) =>
                 {
                     if (PopupHost.CanCreatePopup())
-                    {
                         PopupHost.ShowPopup(new StashChanges(_repo, _selectedStaged, false));
-                    }
+
                     e.Handled = true;
                 };
 
@@ -854,6 +922,45 @@ namespace SourceGit.ViewModels
                 menu.Items.Add(stash);
                 menu.Items.Add(patch);
                 menu.Items.Add(new MenuItem() { Header = "-" });
+
+                var lfsEnabled = new Commands.LFS(_repo.FullPath).IsEnabled();
+                if (lfsEnabled)
+                {
+                    var lfs = new MenuItem();
+                    lfs.Header = App.Text("GitLFS");
+                    lfs.Icon = App.CreateMenuIcon("Icons.LFS");
+
+                    var lfsLock = new MenuItem();
+                    lfsLock.Header = App.Text("GitLFS.Locks.Lock");
+                    lfsLock.Icon = App.CreateMenuIcon("Icons.Lock");
+                    lfsLock.Click += async (_, e) =>
+                    {
+                        var succ = await Task.Run(() => new Commands.LFS(_repo.FullPath).Lock(change.Path));
+                        if (succ)
+                            App.SendNotification(_repo.FullPath, $"Lock file \"{change.Path}\" successfully!");
+
+                        e.Handled = true;
+                    };
+                    lfs.Items.Add(new MenuItem() { Header = "-" });
+                    lfs.Items.Add(lfsLock);
+
+                    var lfsUnlock = new MenuItem();
+                    lfsUnlock.Header = App.Text("GitLFS.Locks.Unlock");
+                    lfsUnlock.Icon = App.CreateMenuIcon("Icons.Unlock");
+                    lfsUnlock.Click += async (_, e) =>
+                    {
+                        var succ = await Task.Run(() => new Commands.LFS(_repo.FullPath).Unlock(change.Path, false));
+                        if (succ)
+                            App.SendNotification(_repo.FullPath, $"Unlock file \"{change.Path}\" successfully!");
+
+                        e.Handled = true;
+                    };
+                    lfs.Items.Add(lfsUnlock);
+
+                    menu.Items.Add(lfs);
+                    menu.Items.Add(new MenuItem() { Header = "-" });
+                }
+
                 menu.Items.Add(copyPath);
                 menu.Items.Add(copyFileName);
             }

src/Views/LFSFetch.axaml

@@ -0,0 +1,18 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:m="using:SourceGit.Models"
+             xmlns:vm="using:SourceGit.ViewModels"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="SourceGit.Views.LFSFetch">
+  <StackPanel Orientation="Vertical" Margin="8,0">
+    <TextBlock FontSize="18"
+               Classes="bold"
+               Text="{DynamicResource Text.GitLFS.Fetch.Title}"/>
+    <TextBlock Text="{DynamicResource Text.GitLFS.Fetch.Tips}"
+               Margin="8,16,8,0"
+               HorizontalAlignment="Center"
+               TextWrapping="Wrap"/>
+  </StackPanel>
+</UserControl>

src/Views/LFSFetch.axaml.cs

@@ -0,0 +1,12 @@
+using Avalonia.Controls;
+
+namespace SourceGit.Views
+{
+    public partial class LFSFetch : UserControl
+    {
+        public LFSFetch()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/Views/LFSLocks.axaml

@@ -0,0 +1,126 @@
+<v:ChromelessWindow xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+                    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+                    xmlns:vm="using:SourceGit.ViewModels"
+                    xmlns:c="using:SourceGit.Converters"
+                    xmlns:v="using:SourceGit.Views"
+                    mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+                    x:Class="SourceGit.Views.LFSLocks"
+                    x:DataType="vm:LFSLocks"
+                    Icon="/App.ico"
+                    Title="{DynamicResource Text.GitLFS.Locks.Title}"
+                    Width="600" Height="400"
+                    CanResize="False"
+                    WindowStartupLocation="CenterOwner">
+  <Grid RowDefinitions="Auto,*">
+    <!-- TitleBar -->
+    <Grid Grid.Row="0" ColumnDefinitions="Auto,*,Auto" Height="30">
+      <Border Grid.Column="0" Grid.ColumnSpan="3"
+              Background="{DynamicResource Brush.TitleBar}"
+              BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}"
+              PointerPressed="BeginMoveWindow"/>
+
+      <Path Grid.Column="0"
+            Width="14" Height="14"
+            Margin="10,0,0,0"
+            Data="{StaticResource Icons.Lock}"
+            IsVisible="{OnPlatform True, macOS=False}"/>
+
+      <Grid Grid.Column="0" Classes="caption_button_box" Margin="2,4,0,0" IsVisible="{OnPlatform False, macOS=True}">
+        <Button Classes="caption_button_macos" Click="CloseWindow">
+          <Grid>
+            <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
+            <Path Height="6" Width="6" Stretch="Fill" Fill="#404040" Stroke="#404040" StrokeThickness="1" Data="{StaticResource Icons.Window.Close}"/>
+          </Grid>
+        </Button>
+      </Grid>
+
+      <TextBlock Grid.Column="0" Grid.ColumnSpan="3"
+                 Classes="bold"
+                 Text="{DynamicResource Text.GitLFS.Locks.Title}"
+                 HorizontalAlignment="Center" VerticalAlignment="Center"
+                 IsHitTestVisible="False"/>
+
+      <Button Grid.Column="2"
+              Classes="caption_button"
+              Click="CloseWindow"
+              IsVisible="{OnPlatform True, macOS=False}">
+        <Path Data="{StaticResource Icons.Window.Close}"/>
+      </Button>
+    </Grid>
+
+    <!-- Locked Files -->
+    <Grid Grid.Row="1">
+      <DataGrid Margin="8"
+                Background="{DynamicResource Brush.Contents}"
+                ItemsSource="{Binding Locks}"
+                SelectionMode="Single"
+                CanUserReorderColumns="False"
+                CanUserResizeColumns="False"
+                CanUserSortColumns="False"
+                IsReadOnly="True"
+                HeadersVisibility="None"
+                Focusable="False"
+                RowHeight="26"
+                BorderThickness="1"
+                BorderBrush="{DynamicResource Brush.Border2}"
+                HorizontalScrollBarVisibility="Disabled"
+                VerticalScrollBarVisibility="Auto">
+        <DataGrid.Columns>
+          <DataGridTemplateColumn Width="*">
+            <DataGridTemplateColumn.CellTemplate>
+              <DataTemplate>
+                <StackPanel Orientation="Horizontal">
+                  <Path Width="14" Height="14" Margin="8,0,4,0" Data="{StaticResource Icons.File}"/>
+                  <TextBlock Text="{Binding File}" Margin="4,0"/>
+                </StackPanel>
+              </DataTemplate>
+            </DataGridTemplateColumn.CellTemplate>
+          </DataGridTemplateColumn>
+
+          <DataGridTemplateColumn>
+            <DataGridTemplateColumn.CellTemplate>
+              <DataTemplate>
+                <TextBlock Text="{Binding User}" Margin="8,0"/>
+              </DataTemplate>
+            </DataGridTemplateColumn.CellTemplate>
+          </DataGridTemplateColumn>
+
+          <DataGridTemplateColumn>
+            <DataGridTemplateColumn.CellTemplate>
+              <DataTemplate>
+                <Button Classes="icon_button" Click="OnUnlockButtonClicked" ToolTip.Tip="{DynamicResource Text.GitLFS.Locks.Unlock}">
+                  <Path Width="14" Height="14" Data="{StaticResource Icons.Unlock}"/>
+                </Button>
+              </DataTemplate>
+            </DataGridTemplateColumn.CellTemplate>
+          </DataGridTemplateColumn>
+
+          <DataGridTemplateColumn>
+            <DataGridTemplateColumn.CellTemplate>
+              <DataTemplate>
+                <Button Classes="icon_button" Click="OnForceUnlockButtonClicked" ToolTip.Tip="{DynamicResource Text.GitLFS.Locks.UnlockForce}">
+                  <Path Width="14" Height="14" Fill="Red" Data="{StaticResource Icons.Unlock}"/>
+                </Button>
+              </DataTemplate>
+            </DataGridTemplateColumn.CellTemplate>
+          </DataGridTemplateColumn>
+        </DataGrid.Columns>
+      </DataGrid>
+
+      <!-- Empty -->
+      <StackPanel Orientation="Vertical"
+                  HorizontalAlignment="Center" VerticalAlignment="Center"
+                  IsVisible="{Binding IsEmpty}">
+        <Path Width="48" Height="48" Data="{StaticResource Icons.Empty}" Fill="{DynamicResource Brush.FG2}"/>
+        <TextBlock Margin="0,16,0,0" Text="{DynamicResource Text.GitLFS.Locks.Empty}" Foreground="{DynamicResource Brush.FG2}"/>
+      </StackPanel>
+
+      <!-- Loading -->
+      <v:LoadingIcon Width="48" Height="48"
+                     HorizontalAlignment="Center" VerticalAlignment="Center"
+                     IsVisible="{Binding IsLoading}"/>
+    </Grid>
+  </Grid>
+</v:ChromelessWindow>

src/Views/LFSLocks.axaml.cs

@@ -0,0 +1,40 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+
+namespace SourceGit.Views
+{
+    public partial class LFSLocks : ChromelessWindow
+    {
+        public LFSLocks()
+        {
+            InitializeComponent();
+        }
+
+        private void BeginMoveWindow(object sender, PointerPressedEventArgs e)
+        {
+            BeginMoveDrag(e);
+        }
+
+        private void CloseWindow(object sender, RoutedEventArgs e)
+        {
+            Close();
+        }
+
+        private void OnUnlockButtonClicked(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is ViewModels.LFSLocks vm && sender is Button button)
+                vm.Unlock(button.DataContext as Models.LFSLock, false);
+
+            e.Handled = true;
+        }
+
+        private void OnForceUnlockButtonClicked(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is ViewModels.LFSLocks vm && sender is Button button)
+                vm.Unlock(button.DataContext as Models.LFSLock, true);
+
+            e.Handled = true;
+        }
+    }
+}

src/Views/LFSPrune.axaml

@@ -0,0 +1,16 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="SourceGit.Views.LFSPrune">
+  <StackPanel Orientation="Vertical" Margin="8,0">
+    <TextBlock FontSize="18"
+               Classes="bold"
+               Text="{DynamicResource Text.GitLFS.Prune}"/>
+    <TextBlock Text="{DynamicResource Text.GitLFS.Prune.Tips}"
+               Margin="8,16,8,0"
+               HorizontalAlignment="Center"
+               TextWrapping="Wrap"/>
+  </StackPanel>
+</UserControl>

src/Views/LFSPrune.axaml.cs

@@ -0,0 +1,12 @@
+using Avalonia.Controls;
+
+namespace SourceGit.Views
+{
+    public partial class LFSPrune : UserControl
+    {
+        public LFSPrune()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/Views/LFSPull.axaml

@@ -0,0 +1,18 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:m="using:SourceGit.Models"
+             xmlns:vm="using:SourceGit.ViewModels"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="SourceGit.Views.LFSPull">
+  <StackPanel Orientation="Vertical" Margin="8,0">
+    <TextBlock FontSize="18"
+               Classes="bold"
+               Text="{DynamicResource Text.GitLFS.Pull.Title}"/>
+    <TextBlock Text="{DynamicResource Text.GitLFS.Pull.Tips}"
+               Margin="8,16,8,0"
+               HorizontalAlignment="Center"
+               TextWrapping="Wrap"/>
+  </StackPanel>
+</UserControl>

src/Views/LFSPull.axaml.cs

@@ -0,0 +1,12 @@
+using Avalonia.Controls;
+
+namespace SourceGit.Views
+{
+    public partial class LFSPull : UserControl
+    {
+        public LFSPull()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/Views/Repository.axaml

@@ -72,6 +72,10 @@
           <Button Classes="icon_button" Width="32" Margin="8,0,0,0" Click="OpenGitFlowMenu" ToolTip.Tip="{DynamicResource Text.GitFlow}">
             <Path Width="14" Height="14" Data="{StaticResource Icons.Flow}"/>
           </Button>
+
+          <Button Classes="icon_button" Width="32" Margin="8,0,0,0" Click="OpenGitLFSMenu" ToolTip.Tip="{DynamicResource Text.GitLFS}">
+            <Path Width="14" Height="14" Data="{StaticResource Icons.LFS}"/>
+          </Button>
         </StackPanel>
 
         <StackPanel Grid.Column="2" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,0,4,0">          

src/Views/Repository.axaml.cs

@@ -37,6 +37,17 @@ namespace SourceGit.Views
             e.Handled = true;
         }
 
+        private void OpenGitLFSMenu(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is ViewModels.Repository repo)
+            {
+                var menu = repo.CreateContextMenuForGitLFS();
+                (sender as Control)?.OpenContextMenu(menu);
+            }
+
+            e.Handled = true;
+        }
+
         private async void OpenStatistics(object sender, RoutedEventArgs e)
         {
             if (DataContext is ViewModels.Repository repo)