Avalonia/src/Perspex.Base/Utilities/IWeakSubscriber.cs

// Copyright (c) The Perspex Project. All rights reserved.
// Licensed under the MIT license. See licence.md file in the project root for full license information.

using System;

namespace Perspex.Utilities
{
    /// <summary>
    /// Defines a listener to a event subscribed vis the <see cref="WeakSubscriptionManager"/>.
    /// </summary>
    /// <typeparam name="T">The type of the event arguments.</typeparam>
    public interface IWeakSubscriber<T> where T : EventArgs
    {
        /// <summary>
        /// Invoked when the subscribed event is raised.
        /// </summary>
        /// <param name="sender">The event sender.</param>
        /// <param name="e">The event arguments.</param>
        void OnEvent(object sender, T e);
    }
}