private async Task LoadLanguages()
{
var lRepo = new LanguageRepository();
var langs = await lRepo.GetLanguages();
var sec = new Section();
langs.Insert(0, new Language("All Languages", null));
sec.AddAll(langs.Select(x =>
{
var el = new StringElement(x.Name) { Accessory = UITableViewCellAccessory.None };
el.Clicked.Subscribe(_ => _languageSubject.OnNext(x));
return el;
}));
Root.Reset(sec);
if (SelectedLanguage != null)
{
var el = sec.Elements.OfType<StringElement>().FirstOrDefault(x => string.Equals(x.Caption, SelectedLanguage.Name));
if (el != null)
el.Accessory = UITableViewCellAccessory.Checkmark;
var indexPath = el?.IndexPath;
if (indexPath != null)
TableView.ScrollToRow(indexPath, UITableViewScrollPosition.Middle, false);
}
}
public LanguagesViewModel()
{
Title = "Languages";
var languages = new ReactiveList<Language>();
Languages = languages.CreateDerivedCollection(
x => new LanguageItemViewModel(x.Name, x.Slug),
filter: x => x.Name.StartsWith(SearchKeyword ?? string.Empty, StringComparison.OrdinalIgnoreCase),
signalReset: this.WhenAnyValue(x => x.SearchKeyword));
Languages
.Changed.Select(_ => Unit.Default)
.Merge(this.WhenAnyValue(x => x.SelectedLanguage).Select(_ => Unit.Default))
.Select(_ => SelectedLanguage)
.Where(x => x != null)
.Subscribe(x =>
{
foreach (var l in Languages)
l.Selected = l.Slug == x.Slug;
});
this.WhenAnyValue(x => x.SelectedLanguage)
.IsNotNull()
.Subscribe(_ => Dismiss());
LoadCommand = ReactiveCommand.CreateAsyncTask(async t =>
{
var languageRepository = new LanguageRepository();
var langs = await languageRepository.GetLanguages();
langs.Insert(0, LanguageRepository.DefaultLanguage);
languages.Reset(langs);
});
}
