| public UnregisterCommand ( ICommand command ) : void | ||
| command | ICommand | The command. |
| return | void | |
private void OnViewModelClosed(object sender, ViewModelClosedEventArgs e)
{
Log.Debug("ViewModel '{0}' is closed, automatically unregistering command from CompositeCommand", ViewModel);
_compositeCommand.UnregisterCommand(Command);
ViewModel.Closed -= OnViewModelClosed;
ViewModel = null;
}
private Task OnViewModelClosedAsync(object sender, ViewModelClosedEventArgs e)
{
Log.Debug("ViewModel '{0}' is closed, automatically unregistering command from CompositeCommand", ViewModel);
_compositeCommand.UnregisterCommand(Command);
ViewModel.ClosedAsync -= OnViewModelClosedAsync;
ViewModel = null;
return(TaskHelper.Completed);
}
public void UnregistersCommandForExecution()
{
var vm = new CompositeCommandViewModel();
var compositeCommand = new CompositeCommand();
compositeCommand.RegisterCommand(vm.TestCommand1, vm);
compositeCommand.RegisterCommand(vm.TestCommand2, vm);
compositeCommand.UnregisterCommand(vm.TestCommand1);
compositeCommand.Execute();
Assert.IsFalse(vm.IsTestCommand1Executed);
Assert.IsTrue(vm.IsTestCommand2Executed);
}
public void ThrowsArgumentNullExceptionForNullCommand()
{
var compositeCommand = new CompositeCommand();
ExceptionTester.CallMethodAndExpectException<ArgumentNullException>(() => compositeCommand.UnregisterCommand(null));
}
