public RepositoriesViewModel(
Uri repositoriesUri,
bool showOwner = true,
IApplicationService applicationService = null,
IAlertDialogService dialogService = null)
{
_applicationService = applicationService ?? Locator.Current.GetService <IApplicationService>();
_dialogService = dialogService ?? Locator.Current.GetService <IAlertDialogService>();
NextPage = repositoriesUri;
var showDescription = _applicationService.Account.ShowRepositoryDescriptionInList;
RepositoryItemSelected = ReactiveCommand.Create <RepositoryItemViewModel, RepositoryItemViewModel>(x => x);
var repositoryItems = _internalItems.CreateDerivedCollection(
x => new RepositoryItemViewModel(x, showOwner, showDescription, GoToRepository));
var searchUpdated = this.WhenAnyValue(x => x.SearchText)
.Throttle(TimeSpan.FromMilliseconds(400), RxApp.MainThreadScheduler);
Items = repositoryItems
.CreateDerivedCollection(
x => x,
x => x.Name.ContainsKeyword(SearchText),
signalReset: searchUpdated);
LoadCommand = ReactiveCommand.CreateFromTask(async t =>
{
_internalItems.Clear();
var parameters = new Dictionary <string, string>();
parameters["per_page"] = 75.ToString();
var items = await RetrieveRepositories(repositoriesUri, parameters);
_internalItems.AddRange(items);
return(items.Count > 0);
});
var canLoadMore = this.WhenAnyValue(x => x.NextPage).Select(x => x != null);
LoadMoreCommand = ReactiveCommand.CreateFromTask(async _ =>
{
var items = await RetrieveRepositories(NextPage);
_internalItems.AddRange(items);
return(items.Count > 0);
}, canLoadMore);
LoadCommand.Select(_ => _internalItems.Count == 0)
.ToProperty(this, x => x.IsEmpty, out _isEmpty, true);
LoadCommand.ThrownExceptions.Subscribe(LoadingError);
LoadMoreCommand.ThrownExceptions.Subscribe(LoadingError);
_hasMore = this.WhenAnyValue(x => x.NextPage)
.Select(x => x != null)
.ToProperty(this, x => x.HasMore);
}