28 lines
903 B
C#
28 lines
903 B
C#
using System.Windows.Input;
|
|
|
|
namespace CloudPrint.Client.Infrastructure;
|
|
|
|
public sealed class RelayCommand : ICommand
|
|
{
|
|
private readonly Action<object?> _execute;
|
|
private readonly Predicate<object?>? _canExecute;
|
|
|
|
public RelayCommand(Action execute, Func<bool>? canExecute = null)
|
|
: this(_ => execute(), canExecute is null ? null : _ => canExecute())
|
|
{
|
|
}
|
|
|
|
public RelayCommand(Action<object?> execute, Predicate<object?>? canExecute = null)
|
|
{
|
|
_execute = execute ?? throw new ArgumentNullException(nameof(execute));
|
|
_canExecute = canExecute;
|
|
}
|
|
|
|
public event EventHandler? CanExecuteChanged;
|
|
|
|
public bool CanExecute(object? parameter) => _canExecute?.Invoke(parameter) ?? true;
|
|
|
|
public void Execute(object? parameter) => _execute(parameter);
|
|
|
|
public void RaiseCanExecuteChanged() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
|
|
} |