diff options
Diffstat (limited to 'mcs/class/System.ComponentModel.Composition/src/Composition.Initialization/System/ComponentModel/Composition/Hosting/CompositionHost.cs')
| -rw-r--r-- | mcs/class/System.ComponentModel.Composition/src/Composition.Initialization/System/ComponentModel/Composition/Hosting/CompositionHost.cs | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/mcs/class/System.ComponentModel.Composition/src/Composition.Initialization/System/ComponentModel/Composition/Hosting/CompositionHost.cs b/mcs/class/System.ComponentModel.Composition/src/Composition.Initialization/System/ComponentModel/Composition/Hosting/CompositionHost.cs deleted file mode 100644 index 33d65fd6499..00000000000 --- a/mcs/class/System.ComponentModel.Composition/src/Composition.Initialization/System/ComponentModel/Composition/Hosting/CompositionHost.cs +++ /dev/null @@ -1,113 +0,0 @@ -// -----------------------------------------------------------------------
-// Copyright (c) Microsoft Corporation. All rights reserved.
-// -----------------------------------------------------------------------
-using System;
-using System.Globalization;
-using System.Threading;
-using System.ComponentModel.Composition.Primitives;
-namespace System.ComponentModel.Composition.Hosting
-{
- public static class CompositionHost
- {
- // Field is internal only to assist in testing
- internal static CompositionContainer _container = null;
- private static object _lockObject = new object();
-
- /// <summary>
- /// This method can be used to initialize the global container used by <see cref="CompositionInitializer.SatisfyImports(object)"/>
- /// in case where the default container doesn't provide enough flexibility.
- ///
- /// If this method is needed it should be called exactly once and as early as possible in the application host. It will need
- /// to be called before the first call to <see cref="CompositionInitializer.SatisfyImports(object)"/>
- /// </summary>
- /// <param name="container">
- /// <see cref="CompositionContainer"/> that should be used instead of the default global container.
- /// </param>
- /// <exception cref="ArgumentNullException">
- /// <paramref name="container"/> is <see langword="null"/>.
- /// </exception>
- /// <exception cref="InvalidOperationException">
- /// Either <see cref="Initialize(CompositionContainer)" /> or <see cref="Initialize(ComposablePartCatalog[])" /> has already been called or someone has already made use of the global
- /// container via <see cref="CompositionInitializer.SatisfyImports(object)"/>. In either case you need to ensure that it
- /// is called only once and that it is called early in the application host startup code.
- /// </exception>
- public static void Initialize(CompositionContainer container)
- {
- if (container == null)
- {
- throw new ArgumentNullException("container");
- }
-
- CompositionContainer globalContainer = null;
- bool alreadyCreated = TryGetOrCreateContainer(() => container, out globalContainer);
-
- if (alreadyCreated)
- {
- throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
- Strings.InvalidOperationException_GlobalContainerAlreadyInitialized));
- }
- }
-
- /// <summary>
- /// This method can be used to initialize the global container used by <see cref="CompositionInitializer.SatisfyImports(object)"/>
- /// in case where the default container doesn't provide enough flexibility.
- ///
- /// If this method is needed it should be called exactly once and as early as possible in the application host. It will need
- /// to be called before the first call to <see cref="CompositionInitializer.SatisfyImports(object)"/>
- /// </summary>
- /// <param name="catalogs">
- /// An array of <see cref="ComposablePartCatalog"/> that should be used to initialize the <see cref="CompositionContainer"/> with.
- /// </param>
- /// <exception cref="ArgumentNullException">
- /// <paramref name="catalogs"/> is <see langword="null"/>.
- /// </exception>
- /// <exception cref="InvalidOperationException">
- /// Either <see cref="Initialize(CompositionContainer)" /> or <see cref="Initialize(ComposablePartCatalog[])" />has already been called or someone has already made use of the global
- /// container via <see cref="CompositionInitializer.SatisfyImports(object)"/>. In either case you need to ensure that it
- /// is called only once and that it is called early in the application host startup code.
- /// </exception>
- public static CompositionContainer Initialize(params ComposablePartCatalog[] catalogs)
- {
- AggregateCatalog aggregateCatalog = new AggregateCatalog(catalogs);
- CompositionContainer container = new CompositionContainer(aggregateCatalog);
- try
- {
- CompositionHost.Initialize(container);
- }
- catch
- {
- container.Dispose();
-
- // NOTE : this is important, as this prevents the disposal of the catalogs passed as input arguments
- aggregateCatalog.Catalogs.Clear();
- aggregateCatalog.Dispose();
-
- throw;
- }
-
- return container;
- }
-
-
-
- internal static bool TryGetOrCreateContainer(Func<CompositionContainer> createContainer, out CompositionContainer globalContainer)
- {
- bool alreadyCreated = true;
- if (_container == null)
- {
- var container = createContainer.Invoke();
- lock (_lockObject)
- {
- if (_container == null)
- {
- Thread.MemoryBarrier();
- _container = container;
- alreadyCreated = false;
- }
- }
- }
- globalContainer = _container;
- return alreadyCreated;
- }
- }
-}
\ No newline at end of file |