IPackageManagementSelectedProject CreateSelectedProject(
			IPackageManagementProject project,
			IPackageFromRepository package)
		{
			bool enabled = IsProjectEnabled(project, package);
			bool selected = IsProjectSelected(project, package);
			return new PackageManagementSelectedProject(project, selected, enabled);
		}

		public override PackageViewModel CreatePackageViewModel(IPackageFromRepository package)
		{
			return new UpdatedPackageViewModel(
				package,
				selectedProjectsForUpdatedPackages,
				PackageManagementEvents,
				PackageActionRunner,
				Logger);
		}

		public PackageViewModel CreatePackageViewModel(IPackageFromRepository package)
		{
			return new PackageViewModel(
				package,
				SelectedProjects,
				FakePackageManagementEvents,
				FakeActionRunner,
				FakeLogger);
		}

		public UpdatedPackageViewModel(
			IPackageFromRepository package,
			IPackageManagementSolution solution,
			IPackageManagementEvents packageManagementEvents,
			IPackageActionRunner actionRunner,
			ILogger logger)
			: base(package, solution, packageManagementEvents, actionRunner, logger)
		{
		}

 public UpdatedPackageViewModel(
     IPackageFromRepository package,
     SelectedProjectsForUpdatedPackages selectedProjects,
     IPackageManagementEvents packageManagementEvents,
     IPackageActionRunner actionRunner,
     ILogger logger)
     : base(package, selectedProjects, packageManagementEvents, actionRunner, logger)
 {
 }

		public virtual PackageViewModel CreatePackageViewModel(IPackageFromRepository package)
		{
			return new PackageViewModel(
				package,
				Solution,
				PackageManagementEvents,
				PackageActionRunner,
				Logger);
		}

		public virtual PackageViewModel CreatePackageViewModel(IPackageViewModelParent parent, IPackageFromRepository package)
		{
			return new PackageViewModel(
				parent,
				package,
				SelectedProjects,
				PackageManagementEvents,
				PackageActionRunner,
				Logger);
		}

		public InstalledPackageViewModel2 (
			IPackageViewModelParent2 parent,
			IPackageFromRepository package,
			SelectedProjectsForInstalledPackages selectedProjects,
			IPackageManagementEvents packageManagementEvents,
			IPackageActionRunner actionRunner,
			ILogger logger)
			: base (parent, package, selectedProjects, packageManagementEvents, actionRunner, logger)
		{
		}

		public override PackageViewModel2 CreatePackageViewModel (IPackageViewModelParent2 parent, IPackageFromRepository package)
		{
			return new InstalledPackageViewModel2 (
				parent,
				package,
				selectedProjectsForInstalledPackages,
				PackageManagementEvents,
				PackageActionRunner,
				Logger);
		}

		public IEnumerable<IPackageManagementSelectedProject> GetProjects(IPackageFromRepository package)
		{
			if (HasSingleProjectSelected()) {
				yield return GetSingleProjectSelected(package);
			} else {
				foreach (Project project in GetOpenProjects()) {
					yield return CreateSelectedProject(project, package);
				}
			}
		}

		public PackageViewModel CreatePackageViewModel(IPackageViewModelParent parent, IPackageFromRepository package)
		{
			SelectedProjects = new PackageManagementSelectedProjects(FakeSolution);
			return new PackageViewModel(
				parent,
				package,
				SelectedProjects,
				FakePackageManagementEvents,
				FakeActionRunner,
				FakeLogger);
		}

 protected override bool IsProjectSelected(IPackageManagementProject project, IPackageFromRepository package)
 {
     return IsProjectEnabled(project, package);
 }

 protected override bool IsProjectEnabled(IPackageManagementProject project, IPackageFromRepository package)
 {
     return project.GetPackages()
         .Where(p => IsPackageIdMatch(p.Id, package.Id))
         .Any(p => p.Version < package.Version);
 }

 void ProjectHasOlderVersionOfPackage(IPackageManagementProject project, IPackageFromRepository package)
 {
     project.Stub(p => p.HasOlderPackageInstalled(package)).Return(true);
 }

		IPackageManagementSelectedProject CreateSelectedProject(Project dotNetProject, IPackageFromRepository package)
		{
			IPackageManagementProject project = Solution.GetProject(package.Repository, dotNetProject);
			return CreateSelectedProject(project, package);
		}

		IPackageManagementSelectedProject GetSingleProjectSelected(IPackageFromRepository package)
		{
			return CreateSelectedProject(singleDotNetProjectSelected, package);
		}

		public bool HasOlderPackageInstalled (IPackageFromRepository package)
		{
			if (HasSingleProjectSelected ()) {
				IPackageManagementProject project = GetSingleProjectSelected(package.Repository);
				return project.HasOlderPackageInstalled(package);
			}
			return false;
		}

		/// <summary>
		/// Returns true if the package is installed in the selected projects.
		/// </summary>
		public bool IsPackageInstalled(IPackageFromRepository package)
		{
			if (HasSingleProjectSelected()) {
				IPackageManagementProject project = GetSingleProjectSelected(package.Repository);
				return project.IsPackageInstalled(package);
			}
			return IsPackageInstalledInSolution(package);
		}

		protected virtual bool IsProjectEnabled(IPackageManagementProject project, IPackageFromRepository package)
		{
			return true;
		}

		IPackageManagementSelectedProject CreateSelectedProject(IProject msbuildProject, IPackageFromRepository package)
		{
			IPackageManagementProject project = solution.GetProject(package.Repository, msbuildProject);
			return CreateSelectedProject(project, package);
		}