using System;
using System.Windows.Input;

namespace Life.Misc
{
    public class DelegateCommand<T> : ICommand
    {
        public Action<T> Action { get; set; }
        public Predicate<T> Predicate { get; set; }

        public bool CanExecute(object parameter)
        {
            if (Action == null)
                return false;

            return Predicate?.Invoke((T) parameter) ?? true;
        }

        public void Execute(object parameter)
        {
            Action?.Invoke((T)parameter);
        }

        public event EventHandler CanExecuteChanged;
    }
}