~ubuntu-branches/ubuntu/karmic/moon/karmic

//

// ObservableCollection.cs

//

// Contact:

//   Moonlight List (moonlight-list@lists.ximian.com)

//

// Copyright 2008 Novell, Inc.

//

// Permission is hereby granted, free of charge, to any person obtaining

// a copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to

// permit persons to whom the Software is furnished to do so, subject to

// the following conditions:

// 

// The above copyright notice and this permission notice shall be

// included in all copies or substantial portions of the Software.

// 

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//

using System;

using System.Windows;

using System.Collections.Specialized;

using System.ComponentModel;

 

namespace System.Collections.ObjectModel {

 

        public class ObservableCollection<T> : Collection<T>, INotifyCollectionChanged, INotifyPropertyChanged

        {

                public ObservableCollection ()

                {

                }

 

                protected override void ClearItems ()

                {

                        base.ClearItems ();

                        OnCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Reset));

                }

 

                protected override void InsertItem (int index, T item)

                {

                        base.InsertItem (index, item);

                        OnCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Add,

                                                                                   item,

                                                                                   index));

                }

 

                protected virtual void OnCollectionChanged (NotifyCollectionChangedEventArgs e)

                {

                        if (CollectionChanged != null)

                                CollectionChanged (this, e);

                }

 

                protected virtual void OnPropertyChanged (PropertyChangedEventArgs e)

                {

                        if (PropertyChanged != null)

                                PropertyChanged (this, e);

                }

 

                protected override void RemoveItem (int index)

                {

                        T old_item = this[index];

                        base.RemoveItem (index);

                        OnCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Remove,

                                                                                   old_item,

                                                                                   index));

                }

 

                protected override void SetItem (int index, T item)

                {

                        T old_item = this[index];

                        base.SetItem (index, item);

 

                        OnCollectionChanged (new NotifyCollectionChangedEventArgs (NotifyCollectionChangedAction.Replace,

                                                                                   item,

                                                                                   old_item,

                                                                                   index));

                }

 

                public event NotifyCollectionChangedEventHandler CollectionChanged;

                public event PropertyChangedEventHandler PropertyChanged;

        }

}