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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
#nullable enable
namespace Microsoft.AspNetCore.Mvc.ModelBinding.Metadata;
/// <summary>
/// Provides <see cref="BindingMetadata"/> for a <see cref="DefaultModelMetadata"/>.
/// </summary>
public class BindingSourceMetadataProvider : IBindingMetadataProvider
{
/// <summary>
/// Creates a new <see cref="BindingSourceMetadataProvider"/> for the given <paramref name="type"/>.
/// </summary>
/// <param name="type">
/// The <see cref="Type"/>. The provider sets <see cref="BindingSource"/> of the given <see cref="Type"/> or
/// anything assignable to the given <see cref="Type"/>.
/// </param>
/// <param name="bindingSource">
/// The <see cref="BindingSource"/> to assign to the given <paramref name="type"/>.
/// </param>
public BindingSourceMetadataProvider(Type type, BindingSource? bindingSource)
{
ArgumentNullException.ThrowIfNull(type);
Type = type;
BindingSource = bindingSource;
}
/// <summary>
/// The <see cref="Type"/>. The provider sets <see cref="BindingSource"/> of the given <see cref="Type"/> or
/// anything assignable to the given <see cref="Type"/>.
/// </summary>
public Type Type { get; }
/// <summary>
/// The <see cref="BindingSource"/> to assign to the Type.
/// </summary>
public BindingSource? BindingSource { get; }
/// <inheritdoc />
public void CreateBindingMetadata(BindingMetadataProviderContext context)
{
ArgumentNullException.ThrowIfNull(context);
if (Type.IsAssignableFrom(context.Key.ModelType))
{
context.BindingMetadata.BindingSource = BindingSource;
}
}
}
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