Use NuGet-Operation update HTTP header when updating packages from dialog.

src/AddIns/Misc/PackageManagement/Project/Src/IPackageFromRepositoryExtensions.cs

@@ -11,5 +11,10 @@ namespace ICSharpCode.PackageManagement
 		{
 			return package.Repository.StartInstallOperation(package.Id);
 		}
+		
+		public static IDisposable StartUpdateOperation(this IPackageFromRepository package)
+		{
+			return package.Repository.StartUpdateOperation(package.Id);
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Project/Src/IPackageRepositoryExtensions.cs

@@ -12,5 +12,10 @@ namespace ICSharpCode.PackageManagement
 		{
 			return repository.StartOperation(RepositoryOperationNames.Install, mainPackageId);
 		}
+		
+		public static IDisposable StartUpdateOperation(this IPackageRepository repository, string mainPackageId = null)
+		{
+			return repository.StartOperation(RepositoryOperationNames.Update, mainPackageId);
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Project/Src/PackageViewModel.cs

@@ -181,12 +181,17 @@ namespace ICSharpCode.PackageManagement
 		{
 			ClearReportedMessages();
 			logger.LogAddingPackage();
-			using (IDisposable operation = package.StartInstallOperation()) {
+			using (IDisposable operation = StartInstallOperation(package)) {
 				TryInstallingPackage();
 			}
 			logger.LogAfterPackageOperationCompletes();
 		}
 		
+		protected virtual IDisposable StartInstallOperation(IPackageFromRepository package)
+		{
+			return package.StartInstallOperation();
+		}
+		
 		void ClearReportedMessages()
 		{
 			packageManagementEvents.OnPackageOperationsStarting();

src/AddIns/Misc/PackageManagement/Project/Src/UpdatedPackageViewModel.cs

@@ -24,5 +24,10 @@ namespace ICSharpCode.PackageManagement
 		{
 			return project.CreateUpdatePackageAction();
 		}
+		
+		protected override IDisposable StartInstallOperation(IPackageFromRepository package)
+		{
+			return package.StartUpdateOperation();
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Test/Src/UpdatedPackageViewModelTests.cs

@@ -128,5 +128,34 @@ namespace PackageManagement.Tests
 			
 			Assert.AreEqual(expectedPackage, actualPackage);
 		}
+		
+		[Test]
+		public void AddPackage_PackageRepositoryIsOperationAwareAndPackageAddedSuccessfully_UpdateOperationStartedForPackage()
+		{
+			CreateViewModel();
+			var operationAwareRepository = new FakeOperationAwarePackageRepository();
+			FakePackage fakePackage = viewModel.FakePackage;
+			fakePackage.FakePackageRepository = operationAwareRepository;
+			fakePackage.Id = "MyPackage";
+			
+			viewModel.AddPackage();
+			
+			Assert.AreEqual(RepositoryOperationNames.Update, operationAwareRepository.OperationStarted);
+			Assert.AreEqual("MyPackage", operationAwareRepository.MainPackageIdForOperationStarted);
+		}
+		
+		[Test]
+		public void AddPackage_PackageRepositoryIsOperationAwareAndPackageAddedSuccessfully_UpdateperationStartedIsDisposed()
+		{
+			CreateViewModel();
+			var operationAwareRepository = new FakeOperationAwarePackageRepository();
+			FakePackage fakePackage = viewModel.FakePackage;
+			fakePackage.FakePackageRepository = operationAwareRepository;
+			fakePackage.Id = "MyPackage";
+			
+			viewModel.AddPackage();
+			
+			operationAwareRepository.AssertOperationIsDisposed();
+		}
 	}
 }