protected virtual async Task ProcessNavigationForRootPage(string nextSegment, Queue<string> segments, NavigationParameters parameters, bool? useModalNavigation, bool animated)
{
var nextPage = CreatePageFromSegment(nextSegment);
await ProcessNavigation(nextPage, segments, parameters, useModalNavigation, animated);
var currentPage = _applicationProvider.MainPage;
var modalStack = currentPage?.Navigation.ModalStack.ToList();
await DoNavigateAction(GetCurrentPage(), nextSegment, nextPage, parameters, async () =>
{
await DoPush(null, nextPage, useModalNavigation, animated);
});
if (currentPage != null)
{
PageUtilities.DestroyWithModalStack(currentPage, modalStack);
}
}
public void DestroyWithModalStack()
{
var recorder = new PageNavigationEventRecorder();
var contentPage1 = new ContentPageMock(recorder);
var viewModel1 = contentPage1.BindingContext;
var contentPage2 = new ContentPageMock(recorder);
var viewModel2 = contentPage2.BindingContext;
var contentPage3 = new ContentPageMock(recorder);
var viewModel3 = contentPage3.BindingContext;
var modalStack = new List <Page> {
contentPage2, contentPage3
};
PageUtilities.DestroyWithModalStack(contentPage1, modalStack);
var record = recorder.TakeFirst();
Assert.Equal(contentPage3, record.Sender);
Assert.Equal(PageNavigationEvent.Destroy, record.Event);
record = recorder.TakeFirst();
Assert.Equal(viewModel3, record.Sender);
Assert.Equal(PageNavigationEvent.Destroy, record.Event);
record = recorder.TakeFirst();
Assert.Equal(contentPage2, record.Sender);
Assert.Equal(PageNavigationEvent.Destroy, record.Event);
record = recorder.TakeFirst();
Assert.Equal(viewModel2, record.Sender);
Assert.Equal(PageNavigationEvent.Destroy, record.Event);
record = recorder.TakeFirst();
Assert.Equal(contentPage1, record.Sender);
Assert.Equal(PageNavigationEvent.Destroy, record.Event);
record = recorder.TakeFirst();
Assert.Equal(viewModel1, record.Sender);
Assert.Equal(PageNavigationEvent.Destroy, record.Event);
Assert.True(recorder.IsEmpty);
}