// 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.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;
 
namespace Microsoft.VisualStudio.LanguageServices.Utilities;
 
internal class ViewModelBase : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler? PropertyChanged;
 
    protected void SetProperty<T>(ref T field, T value, [CallerMemberName] string name = "")
    {
        if (EqualityComparer<T>.Default.Equals(field, value))
        {
            return;
        }
 
        field = value;
        NotifyPropertyChanged(name);
    }
 
    protected void NotifyPropertyChanged(string name)
        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
}