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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.
using Microsoft.AspNetCore.Mvc.Rendering;
namespace Microsoft.AspNetCore.Mvc.RazorPages;
/// <summary>
/// Provides methods to create a Razor page.
/// </summary>
public interface IPageActivatorProvider
{
/// <summary>
/// Creates a Razor page activator.
/// </summary>
/// <param name="descriptor">The <see cref="CompiledPageActionDescriptor"/>.</param>
/// <returns>The delegate used to activate the page.</returns>
Func<PageContext, ViewContext, object> CreateActivator(CompiledPageActionDescriptor descriptor);
/// <summary>
/// Releases a Razor page.
/// </summary>
/// <param name="descriptor">The <see cref="CompiledPageActionDescriptor"/>.</param>
/// <returns>The delegate used to dispose the activated page.</returns>
Action<PageContext, ViewContext, object>? CreateReleaser(CompiledPageActionDescriptor descriptor);
/// <summary>
/// Releases a Razor page asynchronously.
/// </summary>
/// <param name="descriptor">The <see cref="CompiledPageActionDescriptor"/>.</param>
/// <returns>The delegate used to dispose the activated page asynchronously.</returns>
Func<PageContext, ViewContext, object, ValueTask>? CreateAsyncReleaser(CompiledPageActionDescriptor descriptor)
{
var releaser = CreateReleaser(descriptor);
if (releaser is null)
{
return null;
}
return (context, viewContext, page) =>
{
releaser(context, viewContext, page);
return default;
};
}
}
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