DelegatingTypeDescriptionProvider.cs

Go to the documentation of this file.

using System.Collections;
using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
internal sealed class DelegatingTypeDescriptionProvider : TypeDescriptionProvider
{
    private readonly Type _type;
 
    internal TypeDescriptionProvider Provider => TypeDescriptor.GetProviderRecursive(_type);
 
    internal DelegatingTypeDescriptionProvider(Type type)
    {
        _type = type;
    }
 
    public override object CreateInstance(IServiceProvider provider, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] Type objectType, Type[] argTypes, object[] args)
    {
        return Provider.CreateInstance(provider, objectType, argTypes, args);
    }
 
    public override IDictionary GetCache(object instance)
    {
        return Provider.GetCache(instance);
    }
 
    [RequiresUnreferencedCode("The Type of component cannot be statically discovered.")]
    public override string GetFullComponentName(object component)
    {
        return Provider.GetFullComponentName(component);
    }
 
    [RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")]
    public override ICustomTypeDescriptor GetExtendedTypeDescriptor(object instance)
    {
        return Provider.GetExtendedTypeDescriptor(instance);
    }
 
    protected internal override IExtenderProvider[] GetExtenderProviders(object instance)
    {
        return Provider.GetExtenderProviders(instance);
    }
 
    [return: DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor | DynamicallyAccessedMemberTypes.PublicFields)]
    public override Type GetReflectionType([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicParameterlessConstructor | DynamicallyAccessedMemberTypes.PublicFields)] Type objectType, object instance)
    {
        return Provider.GetReflectionType(objectType, instance);
    }
 
    public override Type GetRuntimeType(Type objectType)
    {
        return Provider.GetRuntimeType(objectType);
    }
 
    public override ICustomTypeDescriptor GetTypeDescriptor([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] Type objectType, object instance)
    {
        return Provider.GetTypeDescriptor(objectType, instance);
    }
 
    public override bool IsSupportedType(Type type)
    {
        return Provider.IsSupportedType(type);
    }
}