37 lines
915 B
C#
37 lines
915 B
C#
|
using System;
|
||
|
|
using System.Windows.Input;
|
||
|
|
|
||
|
|
#nullable enable
|
||
|
|
|
||
|
|
namespace Pulsar.Server.Controls.Wpf
|
||
|
|
{
|
||
|
|
internal sealed class RelayCommand<T> : ICommand
|
||
|
|
{
|
||
|
|
private readonly Action<T?> _execute;
|
||
|
|
private readonly Func<T?, bool>? _canExecute;
|
||
|
|
|
||
|
|
public RelayCommand(Action<T?> execute, Func<T?, bool>? canExecute = null)
|
||
|
|
{
|
||
|
|
_execute = execute ?? throw new ArgumentNullException(nameof(execute));
|
||
|
|
_canExecute = canExecute;
|
||
|
|
}
|
||
|
|
|
||
|
|
public event EventHandler? CanExecuteChanged;
|
||
|
|
|
||
|
|
public bool CanExecute(object? parameter)
|
||
|
|
{
|
||
|
|
return _canExecute?.Invoke((T?)parameter) ?? true;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Execute(object? parameter)
|
||
|
|
{
|
||
|
|
_execute((T?)parameter);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void RaiseCanExecuteChanged()
|
||
|
|
{
|
||
|
|
CanExecuteChanged?.Invoke(this, EventArgs.Empty);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|