namespace Utils.Basis
{
    using System.ComponentModel;

    public abstract class ViewModelBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        protected bool Set<T>(ref T field, T newValue = default(T), [System.Runtime.CompilerServices.CallerMemberName] string propertyName = null)
        {
            if (System.Collections.Generic.EqualityComparer<T>.Default.Equals(field, newValue))
            {
                return false;
            }

            field = newValue;

            OnPropertyChanged(propertyName);

            return true;
        }

        public virtual void OnPropertyChanged([System.Runtime.CompilerServices.CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}