Nuclex.Support/Source/Collections/IObservableCollection.cs

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#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2010 Nuclex Development Labs
This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.
You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
namespace Nuclex.Support.Collections {
/// <summary>Interface for collections that can be observed</summary>
/// <typeparam name="ItemType">Type of items managed in the collection</typeparam>
public interface IObservableCollection<ItemType> {
/// <summary>Raised when an item has been added to the collection</summary>
event EventHandler<ItemEventArgs<ItemType>> ItemAdded;
/// <summary>Raised when an item is removed from the collection</summary>
event EventHandler<ItemEventArgs<ItemType>> ItemRemoved;
/// <summary>Raised when the collection is about to be cleared</summary>
/// <remarks>
/// This could be covered by calling ItemRemoved for each item currently
/// contained in the collection, but it is often simpler and more efficient
/// to process the clearing of the entire collection as a special operation.
/// </remarks>
event EventHandler Clearing;
/// <summary>Raised when the collection has been cleared of its items</summary>
event EventHandler Cleared;
}
} // namespace Nuclex.Support.Collections