public async Task SaveNavigationAsync()
{
DebugWrite($"Frame: {FrameFacadeInternal.FrameId}");
if (CurrentPageType == null)
{
return;
}
var args = new CancelEventArgs <Type>(FrameFacadeInternal.CurrentPageType);
BeforeSavingNavigation?.Invoke(this, args);
if (args.Cancel)
{
return;
}
var state = FrameFacadeInternal.PageStateSettingsService(GetType().ToString());
if (state == null)
{
throw new InvalidOperationException("State container is unexpectedly null");
}
state.Write <string>("CurrentPageType", CurrentPageType.AssemblyQualifiedName);
state.Write <object>("CurrentPageParam", CurrentPageParam);
state.Write <string>("NavigateState", FrameFacadeInternal?.GetNavigationState());
await Task.CompletedTask;
}
public async Task SaveAsync()
{
// save navigation state into settings
DebugWrite($"Frame: {FrameFacade.FrameId}");
if (CurrentPageType == null)
{
return;
}
if (RaiseBeforeSavingNavigation())
{
return;
}
var frameState = Suspension.GetFrameState();
if (frameState == null)
{
throw new InvalidOperationException("State container is unexpectedly null");
}
frameState.Write <string>("CurrentPageType", CurrentPageType.AssemblyQualifiedName);
frameState.Write <object>("CurrentPageParam", CurrentPageParam);
frameState.Write <string>("NavigateState", FrameFacadeInternal.GetNavigationState());
await Task.CompletedTask;
}
public async Task <bool> RefreshAsync()
{
return(await NavigationOrchestratorAsync(CurrentPageType, CurrentPageParam, NavigationMode.Refresh, () =>
{
Windows.ApplicationModel.Resources.Core.ResourceContext.GetForCurrentView().Reset();
FrameFacadeInternal.SetNavigationState(FrameFacadeInternal.GetNavigationState());
return true;
}));
}