CodeDomSerializationProvider.cs source code in C# .NET

                        Code:
                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / CompMod / System / ComponentModel / Design / Serialization / CodeDomSerializationProvider.cs / 1 / CodeDomSerializationProvider.cs
                        
                        
                             
//------------------------------------------------------------------------------
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
//  
//-----------------------------------------------------------------------------
 
/* 
 */
namespace System.ComponentModel.Design.Serialization { 

    using System.Design;
    using System;
    using System.CodeDom; 
    using System.CodeDom.Compiler;
    using System.Collections; 
    using System.Collections.Specialized; 
    using System.ComponentModel;
    using System.ComponentModel.Design; 
    using System.Diagnostics;
    using System.Resources;
    using System.Runtime.Serialization;
    using System.Globalization; 

    ///  
    ///  
    ///     This is the serialization provider for all code dom serializers.
    ///  
    internal sealed class CodeDomSerializationProvider : IDesignerSerializationProvider {

        /// 
        ///    Returns a code dom serializer 
        /// 
        private object GetCodeDomSerializer(IDesignerSerializationManager manager, object currentSerializer, Type objectType, Type serializerType) { 
 
            // If this isn't a serializer type we recognize, do nothing.  Also, if metadata specified
            // a custom serializer, then use it. 
            if (currentSerializer != null) {
                return null;
            }
 
            // Null is a valid value that can be passed into GetSerializer.  It indicates
            // that the value we need to serialize is null, in which case we handle it 
            // through the PrimitiveCodeDomSerializer. 
            //
            if (objectType == null) { 
                return PrimitiveCodeDomSerializer.Default;
            }

            // Support for components. 
            //
            if (typeof(IComponent).IsAssignableFrom(objectType)) { 
                return ComponentCodeDomSerializer.Default; 
            }
 
            // We special case enums.  They do have instance descriptors, but we want
            // better looking code than the instance descriptor can provide for flags,
            // so we do it ourselves.
            // 
            if (typeof(Enum).IsAssignableFrom(objectType)) {
                return EnumCodeDomSerializer.Default; 
            } 

            // We will provide a serializer for any intrinsic types. 
            //
            if (objectType.IsPrimitive || objectType.IsEnum || objectType == typeof(string)) {
                return PrimitiveCodeDomSerializer.Default;
            } 

            // And one for collections. 
            // 
            if (typeof(ICollection).IsAssignableFrom(objectType)) {
                return CollectionCodeDomSerializer.Default; 
            }

            // And one for IContainer
            if (typeof(IContainer).IsAssignableFrom(objectType)) { 
                return ContainerCodeDomSerializer.Default;
            } 
 
            // And one for resources
            // 
            if (typeof(ResourceManager).IsAssignableFrom(objectType)) {
                return ResourceCodeDomSerializer.Default;
            }
 
            // The default serializer can do any object including those with instance descriptors.
            return CodeDomSerializer.Default; 
        } 

        ///  
        ///    Returns a code dom serializer for members
        /// 
        private object GetMemberCodeDomSerializer(IDesignerSerializationManager manager, object currentSerializer, Type objectType, Type serializerType) {
 
            // Don't provide our serializer if someone else already had one
            if (currentSerializer != null) { 
                return null; 
            }
 
            if (typeof(PropertyDescriptor).IsAssignableFrom(objectType)) {
                return PropertyMemberCodeDomSerializer.Default;
            }
 
            if (typeof(EventDescriptor).IsAssignableFrom(objectType)) {
                return EventMemberCodeDomSerializer.Default; 
            } 

            return null; 
        }

        /// 
        ///    Returns a code dom serializer for types 
        /// 
        private object GetTypeCodeDomSerializer(IDesignerSerializationManager manager, object currentSerializer, Type objectType, Type serializerType) { 
            // Don't provide our serializer if someone else already had one 
            if (currentSerializer != null) {
                return null; 
            }

            if (typeof(IComponent).IsAssignableFrom(objectType)) {
                return ComponentTypeCodeDomSerializer.Default; 
            }
 
            return TypeCodeDomSerializer.Default; 
        }
 
        /// 
        /// 
        ///     This will be called by the serialization manager when it
        ///     is trying to locate a serialzer for an object type. 
        ///     If this serialization provider can provide a serializer
        ///     that is of the correct type, it should return it. 
        ///     Otherwise, it should return null. 
        /// 
        object IDesignerSerializationProvider.GetSerializer(IDesignerSerializationManager manager, object currentSerializer, Type objectType, Type serializerType) { 

            if (serializerType == typeof(CodeDomSerializer)) {
                return GetCodeDomSerializer(manager, currentSerializer, objectType, serializerType);
            } 
            else if (serializerType == typeof(MemberCodeDomSerializer)) {
                return GetMemberCodeDomSerializer(manager, currentSerializer, objectType, serializerType); 
            } 
            else if (serializerType == typeof(TypeCodeDomSerializer)) {
                return GetTypeCodeDomSerializer(manager, currentSerializer, objectType, serializerType); 
            }

            return null; // don't understand this type of serializer.
        } 
    }
} 
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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CodeDomSerializationProvider.cs source code in C# .NET

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