public ExplorerProvider(
Target target,
IExplorerTrigger trigger,
IMessageLoader messageLoader,
IMessageModelFactory messageModelFactory,
IAvatarManager avatarManager
)
{
_items = new SourceList <ItemModel>();
var loadRequests = Observable.FromEventPattern <MessageLoadRequestedArgs>(
h => trigger.MessageLoadRequested += h,
h => trigger.MessageLoadRequested -= h)
.Select(args => args.EventArgs);
BindLoading(loadRequests, target, messageLoader, messageModelFactory)
.DisposeWith(_serviceDisposable);
var visibleRangeChanges = Observable.FromEventPattern <VisibleRangeNotifiedArgs>(
h => trigger.VisibleRangeNotified += h,
h => trigger.VisibleRangeNotified -= h)
.Select(args => args.EventArgs);
BindAvatarLoading(visibleRangeChanges, avatarManager)
.DisposeWith(_serviceDisposable);
BindMediaLoading(visibleRangeChanges)
.DisposeWith(_serviceDisposable);
}
private IDisposable BindVisibility(IExplorerTrigger explorerTrigger)
{
return(this.WhenAnyValue(m => m.VisibleIndexes)
.ObserveOn(TaskPoolScheduler.Default)
.Subscribe(tuple =>
{
if (tuple != null)
{
explorerTrigger.NotifyVisibleRange(
new Range(tuple.Item1, tuple.Item2));
}
}));
}
public ExplorerModel(
IFactory <Target, ExplorerProvider> explorerProviderFactory,
IExplorerTrigger explorerTrigger,
Target target
)
{
var explorerProvider = explorerProviderFactory.Create(target);
BindMessages(explorerProvider).DisposeWith(_modelDisposable);
BindLoading(explorerTrigger).DisposeWith(_modelDisposable);
BindVisibility(explorerTrigger).DisposeWith(_modelDisposable);
}
private IDisposable BindLoading(IExplorerTrigger explorerTrigger)
{
explorerTrigger.LoadMessages(LoadDirection.Prev);
return(Disposable.Empty);
}
