mcs/class/System.ComponentModel.Composition/src/ComponentModel/System/ComponentModel/Composition/ReflectionModel/ReflectionMemberExportDefinition.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.ComponentModel.Composition.ReflectionModel;\r
   9 using System.Globalization;\r
  10 using System.Reflection;\r
  11 using Microsoft.Internal;\r
  12 using Microsoft.Internal.Collections;\r
  13 using System.Threading;\r
  14 \r
  15 namespace System.ComponentModel.Composition.ReflectionModel\r
  16 {\r
  17     internal class ReflectionMemberExportDefinition : ExportDefinition, ICompositionElement\r
  18     {\r
  19         private readonly LazyMemberInfo _member;\r
  20         private readonly ExportDefinition _exportDefinition;\r
  21         private readonly ICompositionElement _origin;\r
  22         private IDictionary<string, object> _metadata;\r
  23 \r
  24         public ReflectionMemberExportDefinition(LazyMemberInfo member, ExportDefinition exportDefinition, ICompositionElement origin)\r
  25         {\r
  26             Assumes.NotNull(exportDefinition);\r
  27 \r
  28             this._member = member;\r
  29             this._exportDefinition = exportDefinition;\r
  30             this._origin = origin;\r
  31         }\r
  32 \r
  33         public override string ContractName\r
  34         {\r
  35             get { return this._exportDefinition.ContractName; }\r
  36         }\r
  37 \r
  38         public LazyMemberInfo ExportingLazyMember\r
  39         {\r
  40             get { return this._member; }\r
  41         }\r
  42 \r
  43         public override IDictionary<string, object> Metadata\r
  44         {\r
  45             get\r
  46             {\r
  47                 if (this._metadata == null)\r
  48                 {\r
  49                     var metadata = this._exportDefinition.Metadata ?? MetadataServices.EmptyMetadata;\r
  50                     this._metadata = metadata.AsReadOnly();\r
  51                 }\r
  52                 return this._metadata;\r
  53             }\r
  54         }\r
  55 \r
  56         string ICompositionElement.DisplayName\r
  57         {\r
  58             get { return this.GetDisplayName(); }\r
  59         }\r
  60 \r
  61         ICompositionElement ICompositionElement.Origin\r
  62         {\r
  63             get { return this._origin; }\r
  64         }\r
  65 \r
  66         public override string ToString()\r
  67         {\r
  68             return this.GetDisplayName();\r
  69         }\r
  70 \r
  71         public ExportingMember ToExportingMember()\r
  72         {\r
  73             return new ExportingMember(this, this.ToReflectionMember());\r
  74         }\r
  75 \r
  76         private ReflectionMember ToReflectionMember()\r
  77         {\r
  78             return this.ExportingLazyMember.ToReflectionMember();\r
  79         }\r
  80 \r
  81         private string GetDisplayName()\r
  82         {\r
  83             return string.Format(CultureInfo.CurrentCulture,\r
  84                    "{0} (ContractName=\"{1}\")",    // NOLOC\r
  85                    this.ToReflectionMember().GetDisplayName(),\r
  86                    this.ContractName);\r
  87         }\r
  88     }\r
  89 }\r