msfs-popout-panel-manager/WpfApp/ViewModel/DelegateCommand.cs

using System;
using System.Windows.Input;

namespace MSFSPopoutPanelManager.WpfApp.ViewModel
{
    public class DelegateCommand : ICommand
    {
        private readonly Action<object> _executeAction;
        private readonly Func<object, bool> _canExecuteAction;

        public DelegateCommand(Action<object> executeAction, Func<object, bool> canExecuteAction)
        {
            _executeAction = executeAction;
            _canExecuteAction = canExecuteAction;
        }

        public void Execute(object parameter) => _executeAction(parameter);

        public bool CanExecute(object parameter) => _canExecuteAction?.Invoke(parameter) ?? true;

        public event EventHandler CanExecuteChanged;

        public void InvokeCanExecuteChanged() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
    }
}