Support selecting the aggregate package repository when searching for packages in the Add Package Reference dialog.

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

@@ -97,7 +97,11 @@ namespace ICSharpCode.PackageManagement
 		
 		void CreateActivePackageRepository()
 		{
-			activePackageRepository = packageRepositoryCache.CreateRepository(ActivePackageSource);
+			if (ActivePackageSource.IsAggregate) {
+				activePackageRepository = CreateAggregatePackageRepository();
+			} else {
+				activePackageRepository = packageRepositoryCache.CreateRepository(ActivePackageSource);
+			}
 		}
 		
 		public IProjectManager ActiveProjectManager {

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

@@ -374,7 +374,14 @@ namespace ICSharpCode.PackageManagement
 		public bool ShowPackageSources { get; set; }
 		
 		public IEnumerable<PackageSource> PackageSources {
-			get { return packageManagementService.Options.PackageSources; }
+			get {
+				foreach (PackageSource packageSource in packageManagementService.Options.PackageSources) {
+					yield return packageSource;
+				}
+				if (packageManagementService.Options.PackageSources.HasMultiplePackageSources) {
+					yield return RegisteredPackageSourceSettings.AggregatePackageSource;
+				}
+			}
 		}
 		
 		public PackageSource SelectedPackageSource {

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

@@ -253,13 +253,26 @@ namespace PackageManagement.Tests
 		}
 		
 		[Test]
-		public void PackageSources_TwoPackageSourcesInOptions_HasTwoRepositoriesInCollection()
+		public void PackageSources_TwoPackageSourcesInOptions_ReturnsTwoPackageSourcesPlusAggregatePackageSource()
 		{
 			CreatePackageManagementService();
 			AddTwoPackageSourcesToRegisteredSources();
 			CreateViewModel(packageManagementService);
 			
-			var expectedPackageSources = packageManagementService.Options.PackageSources;
+			var expectedPackageSources = new List<PackageSource>(packageManagementService.Options.PackageSources);
+			expectedPackageSources.Add(RegisteredPackageSourceSettings.AggregatePackageSource);
+			
+			PackageSourceCollectionAssert.AreEqual(expectedPackageSources, viewModel.PackageSources);
+		}
+		
+		[Test]
+		public void PackageSources_OnePackageSourceInOptions_ReturnsOnePackageSource()
+		{
+			CreatePackageManagementService();
+			AddOnePackageSourceToRegisteredSources();
+			CreateViewModel(packageManagementService);
+			
+			var expectedPackageSources = new List<PackageSource>(packageManagementService.Options.PackageSources);
 			
 			PackageSourceCollectionAssert.AreEqual(expectedPackageSources, viewModel.PackageSources);
 		}

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

@@ -561,7 +561,38 @@ namespace PackageManagement.Tests
 			updatePackageHelper.UpdateTestPackage();
 			
 			Assert.AreEqual(installPackageHelper.TestPackage, package);
-
+		}
+		
+		[Test]
+		public void ActivePackageRepository_ActivePackageSourceIsAggregate_ReturnsAggregatePackageRepository()
+		{
+			CreatePackageSources();
+			packageSourcesHelper.AddTwoPackageSources();
+			CreatePackageManagementService(packageSourcesHelper.Options);
+			
+			var repository1Package = new FakePackage("One");
+			var repository1 = new FakePackageRepository();
+			repository1.FakePackages.Add(repository1Package);
+			
+			fakePackageRepositoryFactory.FakePackageRepositories.Add(packageSourcesHelper.RegisteredPackageSources[0], repository1);
+			
+			var repository2Package = new FakePackage("Two");
+			var repository2 = new FakePackageRepository();
+			repository2.FakePackages.Add(repository2Package);
+			
+			fakePackageRepositoryFactory.FakePackageRepositories.Add(packageSourcesHelper.RegisteredPackageSources[1], repository2);
+			
+			packageManagementService.ActivePackageSource = RegisteredPackageSourceSettings.AggregatePackageSource;
+						
+			IPackageRepository repository = packageManagementService.ActivePackageRepository;
+			List<IPackage> packages = repository.GetPackages().OrderBy(x => x.Id).ToList();
+			
+			var expectedPackages = new FakePackage[] {
+				repository1Package,
+				repository2Package
+			};
+			
+			CollectionAssert.AreEqual(expectedPackages, packages);
 		}
 	}
 }