public void HandleLogonEvent(object authenticatedUser)
{
DoLogin((AppUser)authenticatedUser);
var deactivate = new ScreenEventArgs { Event = ScreenEventType.Deactivate, RegionName = RegionName.Body };
EventManager.Screen_Event(deactivate);
}
private void DoLogout()
{
// make sure the contexts are cleared
// var lookupContext = Container.Instance.Resolve<LookupContext>();
// if this is NOT an automatic logout, make sure there are no context changes;
// this is a safeguard; the user should not be able to logout when there are changes anyway.
//if (_LogoutTimer != null)
// if (_coreContext.HasChanges || lookupContext.HasChanges || employmentContext.HasChanges) return;
StopActivityMonitor();
// all good; clear everything
//_coreContext.Addresses.Clear();
AllowedActions = null;
Entity = null;
Instance = null;
//_authContext.LogoutQuery();
// take down screens
var closeMainRegion = new ScreenEventArgs {Event = ScreenEventType.CloseInactiveScreens, RegionName = RegionName.Body};
EventManager.Screen_Event(closeMainRegion);
var closeOverlayActiveScreen = new ScreenEventArgs { Event = ScreenEventType.Deactivate, RegionName = RegionName.Overlay };
EventManager.Screen_Event(closeOverlayActiveScreen);
var closeOverlayRegionInactive = new ScreenEventArgs { Event = ScreenEventType.CloseInactiveScreens, RegionName = RegionName.Overlay };
EventManager.Screen_Event(closeOverlayRegionInactive);
EventManager.Screen_Activate("EntryScreen");
}
private void SwitchScreens(IScreen oldScreen, ScreenEventArgs newScreenArgs)
{
if (oldScreen != null && Region.Views.Contains(oldScreen.View))
{
oldScreen.Leaving();
Region.Deactivate(oldScreen.View);
Region.Remove(oldScreen.View);
}
PrepareScreen(newScreenArgs.ScreenName,newScreenArgs.ScreenSubject);
ShowScreen(newScreenArgs.ScreenName, newScreenArgs.UseAnimation);
}
private void HandleScreenEventRetry(ScreenEventArgs args)
{
Log("HandleScreenEventRetry(); screenName="+args.ScreenName);
// create a dispatcherTimer to call activate screen
if (_jobQueue == null) _jobQueue = new List<ScreenEventArgs>();
_jobQueue.Add(args);
if (_timer == null)
{
_timer = new DispatcherTimer {Interval = TimeSpan.FromSeconds(2)};
_timer.Tick += TimerDing;
_timer.Start();
}
}
private void ActivateScreen(ScreenEventArgs args)
{
Log("ActivateScreen(); " + args.ScreenName);
// check if there is no such registered screen type.
if (!this.ScreenFactoryRegistry.HasFactory(args.ScreenName))
{
// the most likely reason is that the screen's module is not loaded.
// check again in 2 seconds
Log(string.Format("Requested screen '{0}' is not available. Verify it is registered.", args.ScreenName));
HandleScreenEventRetry(args);
return;
}
// Check if an active screen exists.
if (this.ScreenCollection.ContainsKey(this._activeScreenName))
{
// Get the currently active screen
IScreen activeScreen = this.ScreenCollection[this._activeScreenName];
// Check if we can leave
if (activeScreen.CanLeave())
{
IScreen screen = this.ScreenCollection[this._activeScreenName];
if (args.UseAnimation)
VisibilityService.LeaveViewAnimation(screen.View, () => SwitchScreens(screen, args));
else
SwitchScreens(screen, args);
}
else
activeScreen.LeaveCanceled();
}
else
{
Log("call PrepareScreen()");
// no active screen exists
PrepareScreen(args.ScreenName, args.ScreenSubject);
ShowScreen(args.ScreenName, args.UseAnimation);
}
}
protected bool IsNotificationRelevant(ScreenEventArgs args)
{
return true;
}
protected virtual void HandleScreenEvent(ScreenEventArgs args)
{
// check the event type for deactivate, because
// check the screen's region. If it is not "my" region, then ignore the request
if (args.RegionName != MyRegionName) return;
Log("HandleScreenEvent; handling screen=" + args.ScreenName + ", event="+args.Event);
if (args.Event == ScreenEventType.Activate)
ActivateScreen(args);
else if (args.Event == ScreenEventType.Deactivate)
DeactivateScreen(args.ScreenName);
else if (args.Event == ScreenEventType.CloseInactiveScreens)
CloseInactiveScreens();
}
