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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Reactive;
using System;
using System.Reactive.Disposables;
namespace Microsoft.Reactive.Testing
{
class ColdObservable<T> : ITestableObservable<T>
{
readonly TestScheduler scheduler;
readonly Recorded<Notification<T>>[] messages;
readonly List<Subscription> subscriptions = new List<Subscription>();
public ColdObservable(TestScheduler scheduler, params Recorded<Notification<T>>[] messages)
{
if (scheduler == null)
throw new ArgumentNullException("scheduler");
if (messages == null)
throw new ArgumentNullException("messages");
this.scheduler = scheduler;
this.messages = messages;
}
public virtual IDisposable Subscribe(IObserver<T> observer)
{
if (observer == null)
throw new ArgumentNullException("observer");
subscriptions.Add(new Subscription(scheduler.Clock));
var index = subscriptions.Count - 1;
var d = new CompositeDisposable();
for (var i = 0; i < messages.Length; ++i)
{
var notification = messages[i].Value;
d.Add(scheduler.ScheduleRelative(default(object), messages[i].Time, (scheduler1, state1) => { notification.Accept(observer); return Disposable.Empty; }));
}
return Disposable.Create(() =>
{
subscriptions[index] = new Subscription(subscriptions[index].Subscribe, scheduler.Clock);
d.Dispose();
});
}
public IList<Subscription> Subscriptions
{
get { return subscriptions; }
}
public IList<Recorded<Notification<T>>> Messages
{
get { return messages; }
}
}
}
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