Making BranchesView respond to Repository's OnActiveBranchChanged and OnActiveRemoteChanged

src/GitHub.Api/RepositoryManager.cs

@@ -631,6 +631,7 @@ namespace GitHub.Unity
             private set
             {
                 activeBranch = value;
+                Logger.Trace("OnActiveBranchChanged: {0}", value);
                 OnActiveBranchChanged?.Invoke();
             }
         }
@@ -641,6 +642,7 @@ namespace GitHub.Unity
             private set
             {
                 activeRemote = value;
+                Logger.Trace("OnActiveRemoteChanged: {0}", value);
                 OnActiveRemoteChanged?.Invoke();
             }
         }

src/UnityExtension/Assets/Editor/GitHub.Unity/UI/BranchesView.cs

@@ -48,14 +48,22 @@ namespace GitHub.Unity
         {
             base.OnShow();
             if (Parent.Repository != null)
+            {
                 Parent.Repository.OnLocalBranchListChanged += RunRefreshEmbeddedOnMainThread;
+                Parent.Repository.OnActiveBranchChanged += HandleRepositoryBranchChangeEvent;
+                Parent.Repository.OnActiveRemoteChanged += HandleRepositoryBranchChangeEvent;
+            }
         }
 
         public override void OnHide()
         {
             base.OnHide();
             if (Parent.Repository != null)
+            {
                 Parent.Repository.OnLocalBranchListChanged -= RunRefreshEmbeddedOnMainThread;
+                Parent.Repository.OnActiveBranchChanged -= HandleRepositoryBranchChangeEvent;
+                Parent.Repository.OnActiveRemoteChanged -= HandleRepositoryBranchChangeEvent;
+            }
         }
 
         private void RunRefreshEmbeddedOnMainThread()
@@ -63,6 +71,11 @@ namespace GitHub.Unity
             TaskRunner.ScheduleMainThread(RefreshEmbedded);
         }
 
+        private void HandleRepositoryBranchChangeEvent(string obj)
+        {
+            RunRefreshEmbeddedOnMainThread();
+        }
+
         public override void Refresh()
         {
             var historyView = ((Window)Parent).HistoryTab;