using ReactiveUI; using System; using System.Reactive.Linq; using System.Windows.Media.Imaging; using Wabbajack.Common; using Wabbajack.Lib; using Wabbajack.Lib.Downloaders; namespace Wabbajack { public class ModVM : ViewModel { public IMetaState State { get; } // Image isn't exposed as a direct property, but as an observable. // This acts as a caching mechanism, as interested parties will trigger it to be created, // and the cached image will automatically be released when the last interested party is gone. public IObservable ImageObservable { get; } public ModVM(IMetaState state) { State = state; ImageObservable = Observable.Return(State.ImageURL) .ObserveOn(RxApp.TaskpoolScheduler) .DownloadBitmapImage((ex) => Utils.Log($"Skipping slide for mod {State.Name}")) .Replay(1) .RefCount(TimeSpan.FromMilliseconds(5000)); } } }