void LessonSelectedExecute(Lesson selectedLesson)
{
if (selectedLesson == null)
{
throw new ArgumentNullException(nameof(selectedLesson));
}
// ************************************************************
// this block of code is one way to work around the fact that
// the button that was clicked ate the mouse click, preventing
// the ListBox from getting it.
foreach (var lesson in Lessons.Where(l => l.IsSelected))
{
lesson.IsSelected = false;
}
selectedLesson.IsSelected = true;
// ************************************************************
// navigate to the selected lesson
// if successful set the title, otherwise, display an error message
_regionManager.Regions[Constants.ContentRegionName].RequestNavigate(selectedLesson.View,
result => {
if (result.Error == null)
{
_lessonSelectedResolver.Resolve().Publish(selectedLesson.Title);
}
else
{
_lessonSelectedResolver.Resolve().Publish(result.Error.Message);
}
});
}
public ShellViewModel(IEventResolver <LessonSelectedEvent> lessonSelectedResolver)
{
if (lessonSelectedResolver == null)
{
throw new ArgumentNullException(nameof(lessonSelectedResolver));
}
lessonSelectedResolver.Resolve().Subscribe(t => this.LessonTitle = t);
}
public IEventPublisher GetPublisher(ServiceId serviceId, EventId eventId)
{
if (_eventingMethods.Count == 0)
{
throw new CommunicationMethodNotFoundException("There are no communication methods registered.");
}
IServiceDefinition serviceDefinition;
IEventDefinition eventDefinition;
if (_serviceResolver.TryResolve(serviceId, out var serviceRef))
{
serviceDefinition = serviceRef.Definition;
eventDefinition = _eventResolver.Resolve(serviceDefinition, eventId).Definition;
}
else
{
throw new ServiceResolveException(serviceId);
}
lock (_publisherMap)
{
if (_publisherMap.TryGetValue(eventDefinition, out var cachedCommunicator))
{
return(cachedCommunicator);
}
}
var localSettings = _communicationSettingsProvider.GetEventSettings(eventDefinition, external: false);
var externalSettings = _communicationSettingsProvider.GetEventSettings(eventDefinition, external: true);
var localEventingMethod = GetEventingMethod(localSettings.CommunicationType);
var externalEventingMethod = GetEventingMethod(externalSettings.CommunicationType);
var localPublisher = localEventingMethod.CreateEventPublisher(GetConfiguration(eventDefinition));
var publisher = localPublisher;
if (externalEventingMethod.Type != localEventingMethod.Type)
{
var externalPublisher = externalEventingMethod.CreateEventPublisher(GetConfiguration(eventDefinition, forceExternal: true));
publisher = new MulticastEventPublisher(localPublisher, externalPublisher);
}
lock (_publisherMap)
{
if (_publisherMap.TryGetValue(eventDefinition, out var cachedPublisher))
{
(publisher as IDisposable)?.Dispose();
return(cachedPublisher);
}
_publisherMap.Add(eventDefinition, publisher);
return(publisher);
}
}