//===================================================================================

// Microsoft patterns & practices

// Composite Application Guidance for Windows Presentation Foundation and Silverlight

//===================================================================================

// Copyright (c) Microsoft Corporation.  All rights reserved.

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY

// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT

// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

// FITNESS FOR A PARTICULAR PURPOSE.

//===================================================================================

// The example companies, organizations, products, domain names,

// e-mail addresses, logos, people, places, and events depicted

// herein are fictitious.  No association with any real company,

// organization, product, domain name, email address, logo, person,

// places, or events is intended or should be inferred.

//===================================================================================

using System;

using System.Collections.Generic;

using System.Collections.Specialized;

using System.Linq;

using System.Text;



namespace Microsoft.Practices.Prism.TestSupport

{

    public class CollectionChangedTracker

    {

        private readonly List<NotifyCollectionChangedEventArgs> eventList = new List<NotifyCollectionChangedEventArgs>();



        public CollectionChangedTracker(INotifyCollectionChanged collection)

        {

            collection.CollectionChanged += OnCollectionChanged;

        }



        public IEnumerable<NotifyCollectionChangedAction> ActionsFired { get { return this.eventList.Select(e => e.Action);  } }

        public IEnumerable<NotifyCollectionChangedEventArgs> NotifyEvents { get { return this.eventList; } }

        

        private void OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)

        {

            this.eventList.Add(e);

        }

    }

}