// #region License

// /*

// Microsoft Public License (Ms-PL)

// MonoGame - Copyright © 2009 The MonoGame Team

//

// All rights reserved.

//

// This license governs use of the accompanying software. If you use the software, you accept this license. If you do not

// accept the license, do not use the software.

//

// 1. Definitions

// The terms "reproduce," "reproduction," "derivative works," and "distribution" have the same meaning here as under

// U.S. copyright law.

//

// A "contribution" is the original software, or any additions or changes to the software.

// A "contributor" is any person that distributes its contribution under this license.

// "Licensed patents" are a contributor's patent claims that read directly on its contribution.

//

// 2. Grant of Rights

// (A) Copyright Grant- Subject to the terms of this license, including the license conditions and limitations in section 3,

// each contributor grants you a non-exclusive, worldwide, royalty-free copyright license to reproduce its contribution, prepare derivative works of its contribution, and distribute its contribution or any derivative works that you create.

// (B) Patent Grant- Subject to the terms of this license, including the license conditions and limitations in section 3,

// each contributor grants you a non-exclusive, worldwide, royalty-free license under its licensed patents to make, have made, use, sell, offer for sale, import, and/or otherwise dispose of its contribution in the software or derivative works of the contribution in the software.

//

// 3. Conditions and Limitations

// (A) No Trademark License- This license does not grant you rights to use any contributors' name, logo, or trademarks.

// (B) If you bring a patent claim against any contributor over patents that you claim are infringed by the software,

// your patent license from such contributor to the software ends automatically.

// (C) If you distribute any portion of the software, you must retain all copyright, patent, trademark, and attribution

// notices that are present in the software.

// (D) If you distribute any portion of the software in source code form, you may do so only under this license by including

// a complete copy of this license with your distribution. If you distribute any portion of the software in compiled or object

// code form, you may only do so under a license that complies with this license.

// (E) The software is licensed "as-is." You bear the risk of using it. The contributors give no express warranties, guarantees

// or conditions. You may have additional consumer rights under your local laws which this license cannot change. To the extent

// permitted under your local laws, the contributors exclude the implied warranties of merchantability, fitness for a particular

// purpose and non-infringement.

// */

// #endregion License

using System;

using System.Collections.ObjectModel;

namespace Microsoft.Xna.Framework

{

public sealed class GameComponentCollection : Collection<IGameComponent>

{

public event EventHandler<GameComponentCollectionEventArgs> ComponentAdded;

public event EventHandler<GameComponentCollectionEventArgs> ComponentRemoved;

protected override void ClearItems()

{

for (int i = 0; i < base.Count; i++)

{

this.OnComponentRemoved(new GameComponentCollectionEventArgs(base[i]));

}

base.ClearItems();

}

protected override void InsertItem(int index, IGameComponent item)

{

if (base.IndexOf(item) != -1)

{

throw new ArgumentException("Cannot Add Same Component Multiple Times");

}

base.InsertItem(index, item);

if (item != null)

{

this.OnComponentAdded(new GameComponentCollectionEventArgs(item));

}

}

private void OnComponentAdded(GameComponentCollectionEventArgs eventArgs)

{

if (this.ComponentAdded != null)

{

this.ComponentAdded(this, eventArgs);

}

}

private void OnComponentRemoved(GameComponentCollectionEventArgs eventArgs)

{

if (this.ComponentRemoved != null)

{

this.ComponentRemoved(this, eventArgs);

}

}

protected override void RemoveItem(int index)

{

IGameComponent gameComponent = base[index];

base.RemoveItem(index);

if (gameComponent != null)

{

this.OnComponentRemoved(new GameComponentCollectionEventArgs(gameComponent));

}

}

protected override void SetItem(int index, IGameComponent item)

{

throw new NotSupportedException();

}

}

}