public bool Navigate(string pageToken, object parameter)
{
Type pageType = _navigationResolver(pageToken);
if (pageType != null)
{
if (typeof(IContentPage).GetTypeInfo().IsAssignableFrom(pageType.GetTypeInfo()))
{
if (!IsInShellPage())
{
_frameNavigationService.Navigate("AppShell", null);
InitContentFrame();
}
var lastNavigationParameter =
_sessionStateService.SessionState.ContainsKey(LAST_CONTENT_NAVIGATION_PARAMETER_KEY)
? _sessionStateService.SessionState[LAST_CONTENT_NAVIGATION_PARAMETER_KEY]
: null;
var lastPageTypeFullName =
_sessionStateService.SessionState.ContainsKey(LAST_CONTENT_NAVIGATION_PAGE_KEY)
? _sessionStateService.SessionState[LAST_CONTENT_NAVIGATION_PAGE_KEY] as string
: string.Empty;
if (lastPageTypeFullName != pageType.FullName || lastNavigationParameter != parameter)
{
return(_contentFrameFacade.Navigate(pageType, parameter));
}
}
else
{
if (_contentFrameFacade != null)
{
_sessionStateService.UnregisterFrame(_contentFrameFacade);
_contentFrameFacade = null;
}
return(_frameNavigationService.Navigate(pageToken, parameter));
}
}
return(false);
}
/// <summary>
/// Navigates to the page with the specified page token, passing the specified parameter.
/// </summary>
/// <param name="pageToken">The page token.</param>
/// <param name="parameter">The parameter.</param>
/// <returns>Returns <c>true</c> if the navigation succeeds: otherwise, <c>false</c>.</returns>
public bool Navigate(string pageToken, object parameter)
{
Type pageType = _navigationResolver(pageToken);
if (pageType == null)
{
var resourceLoader = new ResourceLoader(Constants.StoreAppsInfrastructureResourceMapId);
var error = string.Format(CultureInfo.CurrentCulture, resourceLoader.GetString("FrameNavigationServiceUnableResolveMessage"), pageToken);
throw new ArgumentException(error, "pageToken");
}
// Get the page type and parameter of the last navigation to check if we
// are trying to navigate to the exact same page that we are currently on
var lastNavigationParameter = _sessionStateService.SessionState.ContainsKey(LastNavigationParameterKey) ? _sessionStateService.SessionState[LastNavigationParameterKey] : null;
var lastPageTypeFullName = _sessionStateService.SessionState.ContainsKey(LastNavigationPageKey) ? _sessionStateService.SessionState[LastNavigationPageKey] as string : string.Empty;
if (lastPageTypeFullName != pageType.FullName || !AreEquals(lastNavigationParameter, parameter))
{
return(_frame.Navigate(pageType, parameter));
}
return(false);
}
/// <summary>
/// Navigates to the page.
/// </summary>
/// <param name="sourcePageType">The page type</param>
/// <returns></returns>
public async Task NavigateAsync(Type sourcePageType)
{
await PerformNavigationAsync(() => frameFacade.Navigate(sourcePageType));
}
