// Copyright (c) Microsoft Corporation
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

// <history>
//     2020-... created by Filip Jeremic (fjeremic) as "HexView.Wpf".
//     2024-... republished by @hotkidfamily as "HexBox.WinUI".
//     2025 Included in PowerToys. (Branch master; commit 72dcf64dc858c693a7a16887004c8ddbab61fce7.)
// </history>
using System;
using System.Windows.Input;

namespace RegistryPreviewUILib.HexBox
{
    public class RelayCommand : ICommand
    {
        private readonly Action<object> _execute;
        private readonly Func<object, bool> _canExecute;

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

        public event EventHandler CanExecuteChanged;

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

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

        public void RaiseCanExecuteChanged()
        {
            CanExecuteChanged?.Invoke(this, EventArgs.Empty);
        }
    }
}
