mcs/class/System.ComponentModel.Composition/src/ComponentModel/System/ComponentModel/Composition/ReflectionModel/PartCreatorParameterImportDefinition.cs

   1 // -----------------------------------------------------------------------\r
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.\r
   3 // -----------------------------------------------------------------------\r
   4 using System;\r
   5 using System.Collections.Generic;\r
   6 using System.ComponentModel.Composition.Hosting;\r
   7 using System.ComponentModel.Composition.Primitives;\r
   8 using System.Linq.Expressions;\r
   9 using System.Reflection;\r
  10 using Microsoft.Internal;\r
  11 \r
  12 namespace System.ComponentModel.Composition.ReflectionModel\r
  13 {\r
  14     internal class PartCreatorParameterImportDefinition : ReflectionParameterImportDefinition, IPartCreatorImportDefinition\r
  15     {\r
  16         private readonly ContractBasedImportDefinition _productImportDefinition;\r
  17 \r
  18         public PartCreatorParameterImportDefinition(\r
  19             Lazy<ParameterInfo> importingLazyParameter,\r
  20             ICompositionElement origin,\r
  21             ContractBasedImportDefinition productImportDefinition)\r
  22             : base(importingLazyParameter, CompositionConstants.PartCreatorContractName, CompositionConstants.PartCreatorTypeIdentity,\r
  23                 productImportDefinition.RequiredMetadata, productImportDefinition.Cardinality, CreationPolicy.Any, origin)\r
  24         {\r
  25             Assumes.NotNull(productImportDefinition);\r
  26             this._productImportDefinition = productImportDefinition;\r
  27         }\r
  28 \r
  29         public ContractBasedImportDefinition ProductImportDefinition { get { return this._productImportDefinition; } }\r
  30 \r
  31         public override bool IsConstraintSatisfiedBy(ExportDefinition exportDefinition)\r
  32         {\r
  33             if (!base.IsConstraintSatisfiedBy(exportDefinition))\r
  34             {\r
  35                 return false;\r
  36             }\r
  37             return PartCreatorExportDefinition.IsProductConstraintSatisfiedBy(this._productImportDefinition, exportDefinition);\r
  38         }\r
  39 \r
  40         public override Expression<Func<ExportDefinition, bool>> Constraint\r
  41         {\r
  42             get\r
  43             {\r
  44                 return ConstraintServices.CreatePartCreatorConstraint(base.Constraint, this._productImportDefinition);\r
  45             }\r
  46         }\r
  47     }\r
  48 }\r