private static void OnCommandChanged(EventToCommand element, DependencyPropertyChangedEventArgs e)
{
if (element != null)
{
if (e.OldValue != null)
{
((ICommand)e.OldValue).CanExecuteChanged -= element.OnCommandCanExecuteChanged;
}
ICommand newValue = (ICommand)e.NewValue;
if (newValue != null)
{
newValue.CanExecuteChanged += element.OnCommandCanExecuteChanged;
}
element.EnableDisableElement();
}
}
static EventToCommand()
{
CommandParameterProperty = DependencyProperty.Register("CommandParameter", typeof(object), typeof(EventToCommand), new PropertyMetadata(null, delegate(DependencyObject s, DependencyPropertyChangedEventArgs e)
{
EventToCommand command = s as EventToCommand;
if ((command != null) && (command.AssociatedObject != null))
{
command.EnableDisableElement();
}
}));
CommandProperty = DependencyProperty.Register("Command", typeof(ICommand), typeof(EventToCommand), new PropertyMetadata(null, (s, e) => OnCommandChanged(s as EventToCommand, e)));
MustToggleIsEnabledProperty = DependencyProperty.Register("MustToggleIsEnabled", typeof(bool), typeof(EventToCommand), new PropertyMetadata(false, delegate(DependencyObject s, DependencyPropertyChangedEventArgs e)
{
EventToCommand command = s as EventToCommand;
if ((command != null) && (command.AssociatedObject != null))
{
command.EnableDisableElement();
}
}));
EventArgsConverterParameterProperty = DependencyProperty.Register("EventArgsConverterParameter", typeof(object), typeof(EventToCommand), new PropertyMetadata(null));
}
