feature: allow fetch the latest remote changes into local branch which is not current branch (#617)

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

src/Commands/Fetch.cs

@@ -21,6 +21,16 @@ namespace SourceGit.Commands
             Args += remote;
         }
 
+        public Fetch(string repo, Models.Branch local, Models.Branch remote, Action<string> outputHandler)
+        {
+            _outputHandler = outputHandler;
+            WorkingDirectory = repo;
+            Context = repo;
+            TraitErrorAsOutput = true;
+            SSHKey = new Config(repo).Get($"remote.{remote.Remote}.sshkey");
+            Args = $"fetch --progress --verbose {remote.Remote} {remote.Name}:{local.Name}";
+        }
+
         protected override void OnReadline(string line)
         {
             _outputHandler?.Invoke(line);

src/Resources/Locales/en_US.axaml

@@ -55,6 +55,7 @@
   <x:String x:Key="Text.BranchCM.DeleteMultiBranches" xml:space="preserve">Delete selected {0} branches</x:String>
   <x:String x:Key="Text.BranchCM.DiscardAll" xml:space="preserve">Discard all changes</x:String>
   <x:String x:Key="Text.BranchCM.FastForward" xml:space="preserve">Fast-Forward to ${0}$</x:String>
+  <x:String x:Key="Text.BranchCM.FetchInto" xml:space="preserve">Fetch ${0}$ into ${1}$...</x:String>
   <x:String x:Key="Text.BranchCM.Finish" xml:space="preserve">Git Flow - Finish ${0}$</x:String>
   <x:String x:Key="Text.BranchCM.Merge" xml:space="preserve">Merge ${0}$ into ${1}$...</x:String>
   <x:String x:Key="Text.BranchCM.Pull" xml:space="preserve">Pull ${0}$</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -58,6 +58,7 @@
   <x:String x:Key="Text.BranchCM.DeleteMultiBranches" xml:space="preserve">删除选中的 {0} 个分支</x:String>
   <x:String x:Key="Text.BranchCM.DiscardAll" xml:space="preserve">放弃所有更改</x:String>
   <x:String x:Key="Text.BranchCM.FastForward" xml:space="preserve">快进(fast-forward)到 ${0}$</x:String>
+  <x:String x:Key="Text.BranchCM.FetchInto" xml:space="preserve">拉取(fetch) ${0}$ 至 ${1}$...</x:String>
   <x:String x:Key="Text.BranchCM.Finish" xml:space="preserve">GIT工作流 - 完成 ${0}$</x:String>
   <x:String x:Key="Text.BranchCM.Merge" xml:space="preserve">合并 ${0}$ 到 ${1}$...</x:String>
   <x:String x:Key="Text.BranchCM.Pull" xml:space="preserve">拉回(pull) ${0}$</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -58,6 +58,7 @@
   <x:String x:Key="Text.BranchCM.DeleteMultiBranches" xml:space="preserve">刪除所選的 {0} 個分支</x:String>
   <x:String x:Key="Text.BranchCM.DiscardAll" xml:space="preserve">捨棄所有變更</x:String>
   <x:String x:Key="Text.BranchCM.FastForward" xml:space="preserve">快轉 (fast-forward) 到 ${0}$</x:String>
+  <x:String x:Key="Text.BranchCM.FetchInto" xml:space="preserve">提取(fetch) ${0}$ 至 ${1}$...</x:String>
   <x:String x:Key="Text.BranchCM.Finish" xml:space="preserve">Git 工作流 - 完成 ${0}$</x:String>
   <x:String x:Key="Text.BranchCM.Merge" xml:space="preserve">合併 ${0}$ 到 ${1}$...</x:String>
   <x:String x:Key="Text.BranchCM.Pull" xml:space="preserve">拉取 (pull) ${0}$</x:String>

src/ViewModels/FetchInto.cs

@@ -0,0 +1,42 @@
+using System.Threading.Tasks;
+
+namespace SourceGit.ViewModels
+{
+    public class FetchInto : Popup
+    {
+        public Models.Branch Local
+        {
+            get;
+            private set;
+        }
+
+        public Models.Branch Upstream
+        {
+            get;
+            private set;
+        }
+
+        public FetchInto(Repository repo, Models.Branch local, Models.Branch upstream)
+        {
+            _repo = repo;
+            Local = local;
+            Upstream = upstream;
+            View = new Views.FetchInto() { DataContext = this };
+        }
+
+        public override Task<bool> Sure()
+        {
+            _repo.SetWatcherEnabled(false);
+            ProgressDescription = "Fast-Forward ...";
+
+            return Task.Run(() =>
+            {
+                new Commands.Fetch(_repo.FullPath, Local, Upstream, SetProgressDescription).Exec();
+                CallUIThread(() => _repo.SetWatcherEnabled(true));
+                return true;
+            });
+        }
+
+        private readonly Repository _repo = null;
+    }
+}

src/ViewModels/Repository.cs

@@ -1354,6 +1354,7 @@ namespace SourceGit.ViewModels
                     e.Handled = true;
                 };
                 menu.Items.Add(checkout);
+                menu.Items.Add(new MenuItem() { Header = "-" });
 
                 var worktree = _worktrees.Find(x => x.Branch == branch.FullName);
                 var upstream = _branches.Find(x => x.FullName == branch.Upstream);
@@ -1370,11 +1371,22 @@ namespace SourceGit.ViewModels
                         e.Handled = true;
                     };
 
-                    menu.Items.Add(new MenuItem() { Header = "-" });
+                    var fetchInto = new MenuItem();
+                    fetchInto.Header = new Views.NameHighlightedTextBlock("BranchCM.FetchInto", upstream.FriendlyName, branch.Name);
+                    fetchInto.Icon = App.CreateMenuIcon("Icons.Fetch");
+                    fetchInto.IsEnabled = branch.TrackStatus.Ahead.Count == 0;
+                    fetchInto.Click += (_, e) =>
+                    {
+                        if (PopupHost.CanCreatePopup())
+                            PopupHost.ShowAndStartPopup(new FetchInto(this, branch, upstream));
+                        e.Handled = true;
+                    };
+
                     menu.Items.Add(fastForward);
+                    menu.Items.Add(new MenuItem() { Header = "-" });
+                    menu.Items.Add(fetchInto);
                 }
 
-                menu.Items.Add(new MenuItem() { Header = "-" });
                 menu.Items.Add(push);
 
                 var merge = new MenuItem();

src/Views/FetchInto.axaml

@@ -0,0 +1,21 @@
+<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:vm="using:SourceGit.ViewModels"
+             mc:Ignorable="d" d:DesignWidth="500" d:DesignHeight="450"
+             x:Class="SourceGit.Views.FetchInto"
+             x:DataType="vm:FetchInto">
+  <StackPanel Orientation="Vertical" Margin="8,0">
+    <TextBlock FontSize="18"
+               Classes="bold"
+               Text="{DynamicResource Text.Fetch.Title}"/>
+    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,16,0,0">
+      <Path Width="14" Height="14" Data="{StaticResource Icons.Branch}"/>
+      <TextBlock Text="{Binding Upstream.FriendlyName}" Margin="8,0,0,0"/>
+      <TextBlock Text="→" Margin="8,0"/>
+      <Path Width="14" Height="14" Data="{StaticResource Icons.Branch}"/>
+      <TextBlock Text="{Binding Local.Name}" Margin="8,0,0,0"/>
+    </StackPanel>
+  </StackPanel>
+</UserControl>

src/Views/FetchInto.axaml.cs

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