using System;
using System.Windows.Input;

namespace Aufgabe17.Framework
{
	// Diese Klasse kann man sich bei Microsoft runterladen
	public class RelayCommand : ICommand
	{
		private readonly Action<object> execute;
		private readonly Func<object, bool> canExecute;

		public event EventHandler CanExecuteChanged
		{
			add => CommandManager.RequerySuggested += value;
			remove => CommandManager.RequerySuggested -= value;
		}

		public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
		{
			this.execute = execute;
			this.canExecute = canExecute;
		}

		public bool CanExecute(object parameter)
		{
			return canExecute == null || canExecute(parameter);
		}

		public void Execute(object parameter)
		{
			execute(parameter);
		}
	}
}