// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.ComponentModel;

namespace CommunityToolkit.Mvvm.ComponentModel;

/// <summary>
/// An attribute that indicates that a given type should have all the members from <see cref="ObservableObject"/>
/// generated into it, as well as the <see cref="INotifyPropertyChanged"/> and <see cref="INotifyPropertyChanging"/>
/// interfaces. This can be useful when you want the same functionality from <see cref="ObservableObject"/> into a class
/// that already inherits from another one (since C# doesn't support multiple inheritance). This attribute will trigger
/// the source generator to just create the same APIs directly into the decorated class.
/// <para>
/// This attribute can be used as follows:
/// <code>
/// [ObservableObject]
/// partial class MyViewModel : SomeOtherClass
/// {
///     // Other members here...
/// }
/// </code>
/// </para>
/// And with this, the same APIs from <see cref="ObservableObject"/> will be available on this type as well.
/// </summary>
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
public sealed class ObservableObjectAttribute : Attribute
{
}