protected override void OnInitialize()
{
base.OnInitialize();
LogData = new BindableCollection <string>();
SearchResults = new BindableCollectionEx <string>();
var searchTextChanged = Observable.FromEventPattern <PropertyChangedEventHandler, PropertyChangedEventArgs>(
ev => PropertyChanged += ev,
ev => PropertyChanged -= ev)
.Where(ev => ev.EventArgs.PropertyName == "SearchText")
.Select(_ => SearchText);
var input = searchTextChanged
.Where(s => s == null || s.Length < 3)
.Throttle(TimeSpan.FromMilliseconds(500))
.Merge(searchTextChanged
.Where(s => s != null && s.Length >= 3)
.Throttle(TimeSpan.FromMilliseconds(300)))
.DistinctUntilChanged();
//for logging purpose
var logSubscriber = input
.ObserveOn(Scheduler.Default)
.SubscribeOn(Scheduler.CurrentThread)
.Subscribe(a => LogData.Add(a.ToString()));
//The search in the repository
var search = Observable.ToAsync <string, SearchResult>(DoSearch);
var results = input.SelectMany(searchTerm => search(searchTerm).TakeUntil(input));
var resultSubscriber = results
.ObserveOn(Scheduler.Default)
.SubscribeOn(Scheduler.CurrentThread)
.Subscribe(r => SearchResults.Reload(r.Results.ToList()));
}
public ShellViewModel(IWindowManager windowManager,
IEventAggregator eventAggregator,
INotificationService notificationService)
{
_windowManager = windowManager;
_eventAggregator = eventAggregator;
_notificationService = notificationService;
Notifications = new BindableCollectionEx <NotificationViewModel>();
}
