public SpellCheckerViewModel(ISpellCheckerModel spellChecker)
{
_spellChecker = spellChecker;
_dispatcher = new DispatcherScheduler(System.Windows.Threading.Dispatcher.CurrentDispatcher);
_corrections = new BindingList <string>();
_logs = new BindingList <string>();
_searchChanged = new Subject <string>();
_logChanged = new Subject <string>();
Func <string, IObservable <string> > GetSuggestions = (searchText) => {
IsProcessing = true;
Corrections.Clear();
Error = null;
AddToLog(string.Format("Searching for suggestions : {0}", searchText));
return(_spellChecker
.SpellCheck(searchText, 5)
.ToObservable <string>());
};
var searches = _searchChanged
.Select(GetSuggestions)
.Finally(() => AddToLog("Search DISPOSED!!!"));
searches
.Switch()
.Where(s => s.Length > 3)
.DistinctUntilChanged()
.SubscribeOn(Scheduler.Default)
.ObserveOn(_dispatcher)
.Subscribe(OnEachSuggest, OnSuggestError, OnSuggestComplete);
DoLogging(_logChanged);
}
public SpellCheckerViewModel(ISpellCheckerModel spellChecker)
{
_spellChecker = spellChecker;
_dispatcher = new DispatcherScheduler(System.Windows.Threading.Dispatcher.CurrentDispatcher);
_corrections = new BindingList <string>();
_searchChanged = new Subject <string>();
Func <string, IObservable <string> > GetSuggestions = (searchText) =>
{
IsProcessing = true;
Corrections.Clear();
Error = null;
return(_spellChecker.SpellCheck(searchText, 5).ToObservable <string>());
};
var searches = this.SearchChanged
.Select(GetSuggestions);
searches
.Switch() //Provides the most recent changes in this sequence
.Where(s => s.Length > 3) //Do lookup only for 4 letter words and above
.DistinctUntilChanged() //Do lookup only if new value entered is different from old
.SubscribeOn(Scheduler.Default) //Search on background thread
.ObserveOn(_dispatcher) //Return result on dispatcher
.Subscribe(OnEachSuggest, OnSuggestError, OnSuggestComplete);
}
