mcs/class/referencesource/System.Xml/System/Xml/Serialization/Configuration/SchemaImporterExtensionElement.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="SchemaImporterExtensionElement.cs" company="Microsoft Corporation">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 //------------------------------------------------------------------------------
   7 #if CONFIGURATION_DEP
   8 namespace System.Xml.Serialization.Configuration
   9 {
  10     using System;
  11     using System.Configuration;
  12     using System.ComponentModel;
  13     using System.Globalization;
  14     using System.Reflection;
  15     using System.Security.Permissions;
  16
  17     public sealed class SchemaImporterExtensionElement : ConfigurationElement
  18     {
  19         public SchemaImporterExtensionElement()
  20         {
  21             this.properties.Add(this.name);
  22             this.properties.Add(this.type);
  23         }
  24
  25         public SchemaImporterExtensionElement(string name, string type) : this()
  26         {
  27             this.Name = name;
  28             this[this.type] = new TypeAndName(type);
  29         }
  30
  31         public SchemaImporterExtensionElement(string name, Type type) : this()
  32         {
  33             this.Name = name;
  34             this.Type = type;
  35         }
  36
  37         [ConfigurationProperty(ConfigurationStrings.Name, IsRequired=true, IsKey = true)]
  38         public string Name
  39         {
  40             get { return (string)this[this.name]; }
  41             set { this[this.name] = value; }
  42         }
  43
  44         protected override ConfigurationPropertyCollection Properties
  45         {
  46             get
  47             {
  48                 return this.properties;
  49             }
  50         }
  51
  52         [ConfigurationProperty(ConfigurationStrings.Type, IsRequired=true, IsKey = false)]
  53         [TypeConverter(typeof(TypeTypeConverter))]
  54         public Type Type
  55         {
  56             get { return ((TypeAndName) this[this.type]).type; }
  57             set { this[this.type] = new TypeAndName(value); }
  58         }
  59
  60         internal string Key
  61         {
  62             get { return this.Name; }
  63         }
  64
  65         ConfigurationPropertyCollection properties = new ConfigurationPropertyCollection();
  66
  67         readonly ConfigurationProperty name =
  68             new ConfigurationProperty(ConfigurationStrings.Name, typeof(string), null,
  69                     ConfigurationPropertyOptions.IsKey);
  70
  71         readonly ConfigurationProperty type =
  72             new ConfigurationProperty(ConfigurationStrings.Type, typeof(Type), null,
  73                     new TypeTypeConverter(), null, ConfigurationPropertyOptions.IsRequired);
  74
  75         class TypeAndName
  76         {
  77             public TypeAndName(string name)
  78             {
  79                 this.type = Type.GetType(name, true, true);
  80                 this.name = name;
  81             }
  82
  83             public TypeAndName(Type type)
  84             {
  85                 this.type = type;
  86             }
  87
  88             public override int GetHashCode()
  89             {
  90                 return type.GetHashCode();
  91             }
  92
  93             public override bool Equals(object comparand)
  94             {
  95                 return type.Equals(((TypeAndName) comparand).type);
  96             }
  97
  98             public readonly Type type;
  99             public readonly string name;
 100         }
 101
 102         class TypeTypeConverter : TypeConverter {
 103             public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
 104                 if (sourceType == typeof(string)) {
 105                     return true;
 106                 }
 107                 return base.CanConvertFrom(context, sourceType);
 108             }
 109
 110             public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
 111                 if (value is string) {
 112                     return new TypeAndName((string) value);
 113                 }
 114
 115                 return base.ConvertFrom(context, culture, value);
 116             }
 117
 118             public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
 119                 if (destinationType == typeof(string)) {
 120                     TypeAndName castedValue = (TypeAndName) value;
 121                     return castedValue.name == null ? castedValue.type.AssemblyQualifiedName : castedValue.name;
 122                 }
 123
 124                 return base.ConvertTo(context, culture, value, destinationType);
 125             }
 126         }
 127     }
 128 }
 129 #endif