void NavigationService_NavigationHistoryCleared(object sender, NavigationHistoryClearedEventArgs e)
{
for (int i = 0; i < e.Count; i++)
{
UIViewController[] newControllers = new UIViewController[] { ViewControllers[ViewControllers.Length - 1] };
SetViewControllers(newControllers, animated: false);
}
}
public async Task WhenSingleItemOnStack_NavigationHistoryClearedEventArgumentsAreCorrect()
{
NavigationHistoryClearedEventArgs args = null;
target.NavigationHistoryCleared += (s, e) => args = e;
// after running twice, navigation depth is 1
for (int i = 0; i < 2; i++)
{
await target.NavigateAsync(new TestViewModel(), waitFor : false, ct : CancellationToken.None);
}
target.ClearHistory();
Assert.That(args.From, Is.Zero);
Assert.That(args.Count, Is.EqualTo(1));
}
void NavigationService_NavigationHistoryCleared(object sender, NavigationHistoryClearedEventArgs e)
{
ClearHistoryCommand.RaiseCanExecuteChanged();
GoBackCommand.RaiseCanExecuteChanged();
}