mcs/class/System.ComponentModel.Composition/Tests/ComponentModelUnitTest/System/ComponentModel/Composition/Factories/CatalogFactory.FilteredComposablePartCatalog.cs

   1 // -----------------------------------------------------------------------\r
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.\r
   3 // -----------------------------------------------------------------------\r
   4 using System;\r
   5 using System.ComponentModel.Composition.Primitives;\r
   6 using System.Linq;\r
   7 \r
   8 namespace System.ComponentModel.Composition.Factories\r
   9 {\r
  10     partial class CatalogFactory\r
  11     {\r
  12         private class FilteredComposablePartCatalog : ComposablePartCatalog\r
  13         {\r
  14             private readonly IQueryable<ComposablePartDefinition> _filteredParts;\r
  15 \r
  16             public FilteredComposablePartCatalog(ComposablePartCatalog catalog, Func<ComposablePartDefinition, bool> filter)\r
  17             {\r
  18                 this._filteredParts = catalog.Parts.Where(filter).AsQueryable();\r
  19 \r
  20                 // Do we care about hooking the the catalog changed events? Not for my particular tests.\r
  21             }\r
  22 \r
  23             public override IQueryable<ComposablePartDefinition> Parts\r
  24             {\r
  25                 get\r
  26                 {\r
  27                     return this._filteredParts;\r
  28                 }\r
  29             }\r
  30         }\r
  31     }\r
  32 }