internal static IDisposable SetupSearchModelEventsObserver(NodeSearchModel model, IEventController controller, ILibraryViewCustomization customization, int throttleTime = 200)
{
customization.SpecificationUpdated += (o, e) => controller.RaiseEvent("libraryDataUpdated");
var observer = new EventObserver <NodeSearchElement, IEnumerable <NodeSearchElement> >(
elements => NotifySearchModelUpdate(customization, elements), CollectToList
).Throttle(TimeSpan.FromMilliseconds(throttleTime));
Action <NodeSearchElement> handler = (searchElement) =>
{
var libraryViewController = (controller as LibraryViewController);
if ((libraryViewController != null) && (libraryViewController.disableObserver))
{
return;
}
observer.OnEvent(searchElement);
};
Action <NodeSearchElement> onRemove = e => handler(null);
//Set up the event callback
model.EntryAdded += handler;
model.EntryRemoved += onRemove;
model.EntryUpdated += handler;
//Set up the dispose event handler
observer.Disposed += () =>
{
model.EntryAdded -= handler;
model.EntryRemoved -= onRemove;
model.EntryUpdated -= handler;
};
return(observer);
}