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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if !NO_PERF
using System;
using System.Reactive.Concurrency;
using System.Threading;
namespace System.Reactive.Linq.ObservableImpl
{
class ObserveOn<TSource> : Producer<TSource>
{
private readonly IObservable<TSource> _source;
private readonly IScheduler _scheduler;
public ObserveOn(IObservable<TSource> source, IScheduler scheduler)
{
_source = source;
_scheduler = scheduler;
}
#if !NO_SYNCCTX
private readonly SynchronizationContext _context;
public ObserveOn(IObservable<TSource> source, SynchronizationContext context)
{
_source = source;
_context = context;
}
#endif
protected override IDisposable Run(IObserver<TSource> observer, IDisposable cancel, Action<IDisposable> setSink)
{
#if !NO_SYNCCTX
if (_context != null)
{
var sink = new ObserveOnImpl(this, observer, cancel);
setSink(sink);
return _source.Subscribe(sink);
}
else
#endif
{
var sink = new ObserveOnObserver<TSource>(_scheduler, observer, cancel);
setSink(sink);
return _source.Subscribe(sink);
}
}
#if !NO_SYNCCTX
class ObserveOnImpl : Sink<TSource>, IObserver<TSource>
{
private readonly ObserveOn<TSource> _parent;
public ObserveOnImpl(ObserveOn<TSource> parent, IObserver<TSource> observer, IDisposable cancel)
: base(observer, cancel)
{
_parent = parent;
}
public void OnNext(TSource value)
{
_parent._context.PostWithStartComplete(() =>
{
base._observer.OnNext(value);
});
}
public void OnError(Exception error)
{
_parent._context.PostWithStartComplete(() =>
{
base._observer.OnError(error);
base.Dispose();
});
}
public void OnCompleted()
{
_parent._context.PostWithStartComplete(() =>
{
base._observer.OnCompleted();
base.Dispose();
});
}
}
#endif
}
}
#endif
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