private void ActivateScreen(ScreenEventArgs args)
{
// There is no such registered screen type. Possibly throw an exception here.
if (!this.ScreenFactoryRegistry.HasFactory(args.ScreenKey))
{
return;
}
// Check if an active screen exists.
if (this.ScreenCollection.ContainsKey(this.activeScreenKey))
{
// Get the currently active screen
IScreen activeScreen = this.ScreenCollection[this.activeScreenKey];
// Check if we can leave
if (activeScreen.CanLeave())
{
IScreen screen = this.ScreenCollection[this.activeScreenKey];
this.VisibilityService.LeaveViewAnimation(screen.View, () =>
{
mainRegion.Deactivate(screen.View);
mainRegion.Remove(screen.View);
IScreen newScreen = EnsureScreenExists(args.ScreenKey, args.ScreenSubject, args.RegionName);
ShowScreen(args.ScreenKey, args.RegionName);
});
}
else
{
activeScreen.CleanUp(); //TODO: implement CleanUp
}
}
else
{
// no active screen exists
IScreen newScreen = EnsureScreenExists(args.ScreenKey, args.ScreenSubject, args.RegionName);
ShowScreen(args.ScreenKey, args.RegionName);
}
}