using System;

using System.Diagnostics;

using System.Windows.Input;

// Source: https://msdn.microsoft.com/en-us/magazine/dd419663.aspx?f=255&MSPPError=-2147217396#id0090030

namespace NETworkManager.Utilities;

public class RelayCommand : ICommand

{

#region Fields

private readonly Action<object> _execute;

private readonly Predicate<object> _canExecute;

#endregion

#region Constructors

public RelayCommand(Action<object> execute) : this(execute, null)

{

}

public RelayCommand(Action<object> execute, Predicate<object> canExecute)

{

_execute = execute ?? throw new ArgumentNullException(nameof(execute)); _canExecute = canExecute;

}

#endregion

#region ICommand Members

[DebuggerStepThrough]

public bool CanExecute(object parameter)

{

return _canExecute?.Invoke(parameter) ?? true;

}

public event EventHandler CanExecuteChanged

{

add => CommandManager.RequerySuggested += value;

remove => CommandManager.RequerySuggested -= value;

}

public void Execute(object parameter)

{

_execute(parameter);

}

#endregion

}