Data Transfer Item Interface (Input/IDataTransferItem.cs)

Defines an item within a data transfer operation, exposing supported data formats and allowing retrieval of values on demand; used for clipboard and drag‑and‑drop handling.

// Source: https://github.com/AvaloniaUI/Avalonia | License: MIT
// Provided via justclaw.it.com; keep this notice with the code.
using System.Collections.Generic;

namespace Avalonia.Input;

/// <summary>
/// Represent an item inside a <see cref="IDataTransfer"/>.
/// An item may support several formats and can return the value of a given format on demand.
/// </summary>
/// <seealso cref="DataTransferItem"/>
public interface IDataTransferItem
{
    /// <summary>
    /// Gets the formats supported by this item.
    /// </summary>
    IReadOnlyList<DataFormat> Formats { get; }

    /// <summary>
    /// Tries to get a value for a given format.
    /// </summary>
    /// <param name="format">The format to retrieve.</param>
    /// <returns>A value for <paramref name="format"/>, or null if 

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