feature<Checkout>: add a status panel for checkout progress

src/Commands/Checkout.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Text;
 
@@ -6,13 +7,16 @@ namespace SourceGit.Commands {
     ///     检出
     /// </summary>
     public class Checkout : Command {
+        private Action<string> handler = null;
 
         public Checkout(string repo) {
             Cwd = repo;
         }
 
-        public bool Branch(string branch) {
+        public bool Branch(string branch, Action<string> onProgress) {
-            Args = $"checkout {branch}";
+            Args = $"checkout --progress {branch}";
+            TraitErrorAsOutput = true;
+            handler = onProgress;
             return Exec();
         }
 
@@ -42,5 +46,9 @@ namespace SourceGit.Commands {
             Args = builder.ToString();
             return Exec();
         }
+
+        public override void OnReadline(string line) {
+            handler?.Invoke(line);
+        }
     }
 }

src/Views/Popups/Checkout.xaml

@@ -0,0 +1,10 @@
+<controls:PopupWidget 
+    x:Class="SourceGit.Views.Popups.Checkout"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+    xmlns:controls="clr-namespace:SourceGit.Views.Controls"
+    mc:Ignorable="d" 
+    d:DesignWidth="500" Height="100">
+</controls:PopupWidget>

src/Views/Popups/Checkout.xaml.cs

@@ -0,0 +1,34 @@
+using System.Threading.Tasks;
+
+namespace SourceGit.Views.Popups {
+
+    /// <summary>
+    ///     切换分支
+    /// </summary>
+    public partial class Checkout : Controls.PopupWidget {
+        private string repo;
+        private string branch;
+
+        public Checkout(string repo, string branch) {
+            this.repo = repo;
+            this.branch = branch;
+
+            InitializeComponent();
+        }
+
+        public override string GetTitle() {
+            return App.Text("BranchCM.Checkout", branch);
+        }
+
+        public override Task<bool> Start() {
+            UpdateProgress(GetTitle());
+
+            return Task.Run(() => {
+                Models.Watcher.SetEnabled(repo, false);
+                new Commands.Checkout(repo).Branch(branch, UpdateProgress);
+                Models.Watcher.SetEnabled(repo, true);
+                return true;
+            });
+        }
+    }
+}

src/Views/Widgets/Dashboard.xaml.cs

@@ -424,7 +424,7 @@ namespace SourceGit.Views.Widgets {
             if (node.Type == BranchNodeType.Branch) NavigateTo((node.Data as Models.Branch).Head);
         }
 
-        private async void OnTreeDoubleClick(object sender, MouseButtonEventArgs e) {
+        private void OnTreeDoubleClick(object sender, MouseButtonEventArgs e) {
             var item = sender as Controls.TreeItem;
             if (item == null) return;
 
@@ -434,9 +434,7 @@ namespace SourceGit.Views.Widgets {
             var branch = node.Data as Models.Branch;
             if (!branch.IsLocal || branch.IsCurrent) return;
 
-            Models.Watcher.SetEnabled(repo.Path, false);
+            new Popups.Checkout(repo.Path, branch.Name).ShowAndStart();
-            await Task.Run(() => new Commands.Checkout(repo.Path).Branch(branch.Name));
-            Models.Watcher.SetEnabled(repo.Path, true);
         }
 
         private void OnTreeContextMenuOpening(object sender, ContextMenuEventArgs e) {
@@ -510,10 +508,8 @@ namespace SourceGit.Views.Widgets {
 
                 var checkout = new MenuItem();
                 checkout.Header = App.Text("BranchCM.Checkout", branch.Name);
-                checkout.Click += async (o, e) => {
+                checkout.Click += (o, e) => {
-                    Models.Watcher.SetEnabled(repo.Path, false);
+                    new Popups.Checkout(repo.Path, branch.Name).ShowAndStart();
-                    await Task.Run(() => new Commands.Checkout(repo.Path).Branch(branch.Name));
-                    Models.Watcher.SetEnabled(repo.Path, true);
                     e.Handled = true;
                 };
                 menu.Items.Add(checkout);
@@ -676,14 +672,11 @@ namespace SourceGit.Views.Widgets {
 
             var checkout = new MenuItem();
             checkout.Header = App.Text("BranchCM.Checkout", branch.Name);
-            checkout.Click += async (o, e) => {
+            checkout.Click += (o, e) => {
                 foreach (var b in repo.Branches) {
                     if (b.IsLocal && b.Upstream == branch.FullName) {
                         if (b.IsCurrent) return;
-
+                        new Popups.Checkout(repo.Path, b.Name).ShowAndStart();
-                        Models.Watcher.SetEnabled(repo.Path, false);
-                        await Task.Run(() => new Commands.Checkout(repo.Path).Branch(b.Name));
-                        Models.Watcher.SetEnabled(repo.Path, true);
                         return;
                     }
                 }

src/Views/Widgets/Histories.xaml.cs

@@ -457,10 +457,8 @@ namespace SourceGit.Views.Widgets {
 
             var checkout = new MenuItem();
             checkout.Header = App.Text("BranchCM.Checkout", branch.Name);
-            checkout.Click += async (o, e) => {
+            checkout.Click += (o, e) => {
-                Models.Watcher.SetEnabled(repo.Path, false);
+                new Popups.Checkout(repo.Path, branch.Name).ShowAndStart();
-                await Task.Run(() => new Commands.Checkout(repo.Path).Branch(branch.Name));
-                Models.Watcher.SetEnabled(repo.Path, true);
                 e.Handled = true;
             };
             submenu.Items.Add(checkout);
@@ -528,14 +526,11 @@ namespace SourceGit.Views.Widgets {
 
             var checkout = new MenuItem();
             checkout.Header = App.Text("BranchCM.Checkout", name);
-            checkout.Click += async (o, e) => {
+            checkout.Click += (o, e) => {
                 foreach (var b in repo.Branches) {
                     if (b.IsLocal && b.Upstream == branch.FullName) {
                         if (b.IsCurrent) return;
-
+                        new Popups.Checkout(repo.Path, b.Name).ShowAndStart();
-                        Models.Watcher.SetEnabled(repo.Path, false);
-                        await Task.Run(() => new Commands.Checkout(repo.Path).Branch(b.Name));
-                        Models.Watcher.SetEnabled(repo.Path, true);
                         return;
                     }
                 }