refactor<*>: rewrite all codes...

src/Views/Popups/DeleteBranch.xaml.cs

@@ -0,0 +1,40 @@
+using System.Threading.Tasks;
+
+namespace SourceGit.Views.Popups {
+    /// <summary>
+    ///     删除分支确认
+    /// </summary>
+    public partial class DeleteBranch : Controls.PopupWidget {
+        private string repo = null;
+        private string branch = null;
+        private string remote = null;
+
+        public DeleteBranch(string repo, string branch, string remote = null) {
+            this.repo = repo;
+            this.branch = branch;
+            this.remote = remote;
+
+            InitializeComponent();
+
+            if (string.IsNullOrEmpty(remote)) txtTarget.Text = branch;
+            else txtTarget.Text = $"{remote}/{branch}";
+        }
+
+        public override string GetTitle() {
+            return App.Text("DeleteBranch");
+        }
+
+        public override Task<bool> Start() {
+            return Task.Run(() => {
+                Models.Watcher.SetEnabled(repo, false);
+                if (string.IsNullOrEmpty(remote)) {
+                    new Commands.Branch(repo, branch).Delete();
+                } else {
+                    new Commands.Push(repo, remote, branch).Exec();
+                }
+                Models.Watcher.SetEnabled(repo, true);
+                return true;
+            });
+        }
+    }
+}