// OpenTween - Client of Twitter
// Copyright (c) 2015 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
// All rights reserved.
//
// This file is part of OpenTween.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>, or write to
// the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
// Boston, MA 02110-1301, USA.

#nullable enable

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace OpenTween
{
    /// <summary>
    /// <see cref="INotifyPropertyChanged"/> の実装に必要な基本的な機能を提供するクラス
    /// </summary>
    public class NotifyPropertyChangedBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler? PropertyChanged;

        protected bool SetProperty<T>(ref T field, T value, [CallerMemberName] string propertyName = "")
        {
            if (EqualityComparer<T>.Default.Equals(field, value))
                return false;

            field = value;
            this.RaisePropertyChanged(propertyName);

            return true;
        }

        protected void RaisePropertyChanged([CallerMemberName] string propertyName = "")
            => this.OnPropertyChanged(new PropertyChangedEventArgs(propertyName));

        protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
            => this.PropertyChanged?.Invoke(this, e);
    }
}