public async Task<bool> GoBackToAsync(PageDescription page)
{
var index = pages.IndexOf(page);
return await GoBackToAsync(index);
}
private async Task<bool> CallOnNavigatingFrom(PageDescription description, NavigationMode mode)
{
var page = description.GetPage(this);
var args = new NavigatingCancelEventArgs();
args.Content = page;
args.SourcePageType = description.Type;
args.NavigationMode = mode;
await page.InternalOnNavigatingFrom(args);
return args.Cancel;
}
private void CallOnNavigatedTo(PageDescription description, NavigationMode mode)
{
var page = description.GetPage(this);
var args = new NavigationEventArgs();
args.Content = page;
args.SourcePageType = description.Type;
args.Parameter = description.Parameter;
args.NavigationMode = mode;
page.InternalOnNavigatedTo(args);
if (Navigated != null)
Navigated(this, args);
}
private void NavigateInternal(Type type, object parameter)
{
var oldPage = CurrentPage;
RemoveAllAfterCurrent();
var newPage = new PageDescription(type, parameter);
pages.Add(newPage);
currentIndex++;
Content = newPage.GetPage(this);
if (oldPage != null)
CallOnNavigatedFrom(oldPage, NavigationMode.Forward);
CallOnNavigatedTo(newPage, NavigationMode.New);
}
