45 lines
1.2 KiB
Plaintext
45 lines
1.2 KiB
Plaintext
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
|
|
namespace Haftmittel
|
|
{
|
|
public class DelegateCommand<T> : System.Windows.Input.ICommand
|
|
{
|
|
private readonly Predicate<T> _canExecute;
|
|
private readonly Action<T> _execute;
|
|
|
|
public DelegateCommand(Action<T> execute)
|
|
: this(execute, null)
|
|
{
|
|
}
|
|
|
|
public DelegateCommand(Action<T> execute, Predicate<T> canExecute)
|
|
{
|
|
_execute = execute;
|
|
_canExecute = canExecute;
|
|
}
|
|
|
|
public bool CanExecute(object parameter)
|
|
{
|
|
if (_canExecute == null)
|
|
return true;
|
|
|
|
return _canExecute((parameter == null) ? default(T) : (T)Convert.ChangeType(parameter, typeof(T)));
|
|
}
|
|
|
|
public void Execute(object parameter)
|
|
{
|
|
_execute((parameter == null) ? default(T) : (T)Convert.ChangeType(parameter, typeof(T)));
|
|
}
|
|
|
|
public event EventHandler CanExecuteChanged;
|
|
public void RaiseCanExecuteChanged()
|
|
{
|
|
if (CanExecuteChanged != null)
|
|
CanExecuteChanged(this, EventArgs.Empty);
|
|
}
|
|
}
|
|
}
|