SharpDevelop/src/AddIns/Misc/PackageManagement/Project/Src/PackageManagementViewModels.cs

// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using ICSharpCode.PackageManagement.Design;
using ICSharpCode.PackageManagement.Scripting;
using NuGet;

namespace ICSharpCode.PackageManagement
{
	public class PackageManagementViewModels
	{
		ManagePackagesViewModel managePackagesViewModel;
		RegisteredPackageSourcesViewModel registeredPackageSourcesViewModel;
		RegisteredPackageSourcesViewModel registeredProjectTemplatePackageSourcesViewModel;
		PackageManagementOptionsViewModel packageManagementOptionsViewModel;
		PackageManagementConsoleViewModel packageManagementConsoleViewModel;
		IPackageManagementSolution solution;
		IRegisteredPackageRepositories registeredPackageRepositories;
		
		public ManagePackagesViewModel ManagePackagesViewModel {
			get {
				CreateManagePackagesViewModel();
				return managePackagesViewModel;
			}
		}
		
		void CreateManagePackagesViewModel()
		{
			CreateRegisteredPackageRepositories();
			CreateSolution();
			ThreadSafePackageManagementEvents packageManagementEvents = CreateThreadSafePackageManagementEvents();
			PackagesViewModels packagesViewModels = CreatePackagesViewModels(packageManagementEvents);

			managePackagesViewModel = 
				new ManagePackagesViewModel(
					packagesViewModels,
					new ManagePackagesViewTitle(solution),
					packageManagementEvents,
					new ManagePackagesUserPrompts(packageManagementEvents));
		}
		
		void CreateRegisteredPackageRepositories()
		{
			if (registeredPackageRepositories == null) {
				if (IsInDesignMode()) {
					registeredPackageRepositories = new DesignTimeRegisteredPackageRepositories();
				} else {
					registeredPackageRepositories = PackageManagementServices.RegisteredPackageRepositories;
				}
			}
		}
		
		void CreateSolution()
		{
			if (solution == null) {
				if (IsInDesignMode()) {
					solution = new FakePackageManagementSolution();
				} else {
					solution = PackageManagementServices.Solution;
				}
			}
		}
		
		ThreadSafePackageManagementEvents CreateThreadSafePackageManagementEvents()
		{
			return new ThreadSafePackageManagementEvents(
				PackageManagementServices.PackageManagementEvents);
		}
		
		PackagesViewModels CreatePackagesViewModels(IThreadSafePackageManagementEvents packageManagementEvents)
		{
			return new PackagesViewModels(
				solution,
				registeredPackageRepositories,
				packageManagementEvents,
				PackageManagementServices.PackageActionRunner,
				new PackageManagementTaskFactory());
		}
		
		bool IsInDesignMode()
		{
			return WpfDesigner.IsInDesignMode();
		}
		
		public RegisteredPackageSourcesViewModel RegisteredPackageSourcesViewModel {
			get {
				if (registeredPackageSourcesViewModel == null) {
					RegisteredPackageSources packageSources = GetRegisteredPackageSources();
					registeredPackageSourcesViewModel = 
						CreateRegisteredPackageSourcesViewModel(packageSources);
				}
				return registeredPackageSourcesViewModel;
			}
		}
		
		RegisteredPackageSources GetRegisteredPackageSources()
		{
			if (IsInDesignMode()) {
				return CreateDesignTimeRegisteredPackageSources();
			} else {
				return PackageManagementServices.Options.PackageSources;
			}
		}
		
		RegisteredPackageSources CreateDesignTimeRegisteredPackageSources()
		{
			return new RegisteredPackageSources(new PackageSource[0]);
		}
		
		RegisteredPackageSourcesViewModel CreateRegisteredPackageSourcesViewModel(RegisteredPackageSources packageSources)
		{
			CreateRegisteredPackageRepositories();
			if (IsInDesignMode()) {
				return new DesignTimeRegisteredPackageSourcesViewModel();
			} else {
				return new RegisteredPackageSourcesViewModel(packageSources);
			}
		}
		
		public RegisteredPackageSourcesViewModel RegisteredProjectTemplatePackageSourcesViewModel {
			get {
				if (registeredProjectTemplatePackageSourcesViewModel == null) {
					RegisteredPackageSources packageSources = GetProjectTemplatePackageSources();
					registeredProjectTemplatePackageSourcesViewModel =
						CreateRegisteredPackageSourcesViewModel(packageSources);
				}
				return registeredProjectTemplatePackageSourcesViewModel;
			}
		}
		
		RegisteredPackageSources GetProjectTemplatePackageSources()
		{
			if (IsInDesignMode()) {
				return CreateDesignTimeRegisteredPackageSources();
			} else {
				return PackageManagementServices.ProjectTemplatePackageSources;
			}
		}
		
		public PackageManagementOptionsViewModel PackageManagementOptionsViewModel {
			get {
				if (packageManagementOptionsViewModel == null) {
					CreateRegisteredPackageRepositories();
					IRecentPackageRepository recentRepository = registeredPackageRepositories.RecentPackageRepository;
					packageManagementOptionsViewModel = new PackageManagementOptionsViewModel(recentRepository);
				}
				return packageManagementOptionsViewModel;
			}
		}
		
		public PackageManagementConsoleViewModel PackageManagementConsoleViewModel {
			get { 
				if (packageManagementConsoleViewModel == null) {
					CreatePackageManagementConsoleViewModel();
				}
				return packageManagementConsoleViewModel;
			}
		}
		
		void CreatePackageManagementConsoleViewModel()
		{
			CreateSolution();
			CreateRegisteredPackageRepositories();
			var consoleHost = PackageManagementServices.ConsoleHost;
			packageManagementConsoleViewModel = 
				new PackageManagementConsoleViewModel(
					registeredPackageRepositories.PackageSources,
					PackageManagementServices.ProjectService,
					consoleHost);
		}
	}
}