Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Base / System / ComponentModel / SortDescriptionCollection.cs / 1 / SortDescriptionCollection.cs
//---------------------------------------------------------------------------- // //// Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // // // // Description: dynamic collection of SortDescriptions // // See spec at http://avalon/connecteddata/Specs/CollectionView.mht // // History: // 03/24/2005 : [....] - created // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.ObjectModel; using System.Collections.Specialized; using System.Windows; using MS.Utility; namespace System.ComponentModel { ////// Implementation of a dynamic data collection of SortDescriptions. /// public class SortDescriptionCollection : Collection, INotifyCollectionChanged { //----------------------------------------------------- // // Public Events // //----------------------------------------------------- #region Public Events /// /// Occurs when the collection changes, either by adding or removing an item. /// ////// see event NotifyCollectionChangedEventHandler INotifyCollectionChanged.CollectionChanged { add { CollectionChanged += value; } remove { CollectionChanged -= value; } } ////// /// Occurs when the collection changes, either by adding or removing an item. /// protected event NotifyCollectionChangedEventHandler CollectionChanged; #endregion Public Events //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods ////// called by base class Collection<T> when the list is being cleared; /// raises a CollectionChanged event to any listeners /// protected override void ClearItems() { base.ClearItems(); OnCollectionChanged(NotifyCollectionChangedAction.Reset); } ////// called by base class Collection<T> when an item is removed from list; /// raises a CollectionChanged event to any listeners /// protected override void RemoveItem(int index) { SortDescription removedItem = this[index]; base.RemoveItem(index); OnCollectionChanged(NotifyCollectionChangedAction.Remove, removedItem, index); } ////// called by base class Collection<T> when an item is added to list; /// raises a CollectionChanged event to any listeners /// protected override void InsertItem(int index, SortDescription item) { item.Seal(); base.InsertItem(index, item); OnCollectionChanged(NotifyCollectionChangedAction.Add, item, index); } ////// called by base class Collection<T> when an item is set in the list; /// raises a CollectionChanged event to any listeners /// protected override void SetItem(int index, SortDescription item) { item.Seal(); SortDescription originalItem = this[index]; base.SetItem(index, item); OnCollectionChanged(NotifyCollectionChangedAction.Remove, originalItem, index); OnCollectionChanged(NotifyCollectionChangedAction.Add, item, index); } ////// raise CollectionChanged event to any listeners /// private void OnCollectionChanged(NotifyCollectionChangedAction action, object item, int index) { if (CollectionChanged != null) { CollectionChanged(this, new NotifyCollectionChangedEventArgs(action, item, index)); } } // raise CollectionChanged event to any listeners void OnCollectionChanged(NotifyCollectionChangedAction action) { if (CollectionChanged != null) { CollectionChanged(this, new NotifyCollectionChangedEventArgs(action)); } } #endregion Protected Methods ////// Immutable, read-only SortDescriptionCollection /// class EmptySortDescriptionCollection : SortDescriptionCollection, IList { //------------------------------------------------------ // // Protected Methods // //------------------------------------------------------ #region Protected Methods ////// called by base class Collection<T> when the list is being cleared; /// raises a CollectionChanged event to any listeners /// protected override void ClearItems() { throw new NotSupportedException(); } ////// called by base class Collection<T> when an item is removed from list; /// raises a CollectionChanged event to any listeners /// protected override void RemoveItem(int index) { throw new NotSupportedException(); } ////// called by base class Collection<T> when an item is added to list; /// raises a CollectionChanged event to any listeners /// protected override void InsertItem(int index, SortDescription item) { throw new NotSupportedException(); } ////// called by base class Collection<T> when an item is set in list; /// raises a CollectionChanged event to any listeners /// protected override void SetItem(int index, SortDescription item) { throw new NotSupportedException(); } #endregion Protected Methods #region IList Implementations // explicit implementation to override the IsReadOnly and IsFixedSize properties bool IList.IsFixedSize { get { return true; } } bool IList.IsReadOnly { get { return true; } } #endregion IList Implementations } ////// returns an empty and non-modifiable SortDescriptionCollection /// public static readonly SortDescriptionCollection Empty = new EmptySortDescriptionCollection(); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // // // // Description: dynamic collection of SortDescriptions // // See spec at http://avalon/connecteddata/Specs/CollectionView.mht // // History: // 03/24/2005 : [....] - created // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.ObjectModel; using System.Collections.Specialized; using System.Windows; using MS.Utility; namespace System.ComponentModel { ////// Implementation of a dynamic data collection of SortDescriptions. /// public class SortDescriptionCollection : Collection, INotifyCollectionChanged { //----------------------------------------------------- // // Public Events // //----------------------------------------------------- #region Public Events /// /// Occurs when the collection changes, either by adding or removing an item. /// ////// see event NotifyCollectionChangedEventHandler INotifyCollectionChanged.CollectionChanged { add { CollectionChanged += value; } remove { CollectionChanged -= value; } } ////// /// Occurs when the collection changes, either by adding or removing an item. /// protected event NotifyCollectionChangedEventHandler CollectionChanged; #endregion Public Events //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods ////// called by base class Collection<T> when the list is being cleared; /// raises a CollectionChanged event to any listeners /// protected override void ClearItems() { base.ClearItems(); OnCollectionChanged(NotifyCollectionChangedAction.Reset); } ////// called by base class Collection<T> when an item is removed from list; /// raises a CollectionChanged event to any listeners /// protected override void RemoveItem(int index) { SortDescription removedItem = this[index]; base.RemoveItem(index); OnCollectionChanged(NotifyCollectionChangedAction.Remove, removedItem, index); } ////// called by base class Collection<T> when an item is added to list; /// raises a CollectionChanged event to any listeners /// protected override void InsertItem(int index, SortDescription item) { item.Seal(); base.InsertItem(index, item); OnCollectionChanged(NotifyCollectionChangedAction.Add, item, index); } ////// called by base class Collection<T> when an item is set in the list; /// raises a CollectionChanged event to any listeners /// protected override void SetItem(int index, SortDescription item) { item.Seal(); SortDescription originalItem = this[index]; base.SetItem(index, item); OnCollectionChanged(NotifyCollectionChangedAction.Remove, originalItem, index); OnCollectionChanged(NotifyCollectionChangedAction.Add, item, index); } ////// raise CollectionChanged event to any listeners /// private void OnCollectionChanged(NotifyCollectionChangedAction action, object item, int index) { if (CollectionChanged != null) { CollectionChanged(this, new NotifyCollectionChangedEventArgs(action, item, index)); } } // raise CollectionChanged event to any listeners void OnCollectionChanged(NotifyCollectionChangedAction action) { if (CollectionChanged != null) { CollectionChanged(this, new NotifyCollectionChangedEventArgs(action)); } } #endregion Protected Methods ////// Immutable, read-only SortDescriptionCollection /// class EmptySortDescriptionCollection : SortDescriptionCollection, IList { //------------------------------------------------------ // // Protected Methods // //------------------------------------------------------ #region Protected Methods ////// called by base class Collection<T> when the list is being cleared; /// raises a CollectionChanged event to any listeners /// protected override void ClearItems() { throw new NotSupportedException(); } ////// called by base class Collection<T> when an item is removed from list; /// raises a CollectionChanged event to any listeners /// protected override void RemoveItem(int index) { throw new NotSupportedException(); } ////// called by base class Collection<T> when an item is added to list; /// raises a CollectionChanged event to any listeners /// protected override void InsertItem(int index, SortDescription item) { throw new NotSupportedException(); } ////// called by base class Collection<T> when an item is set in list; /// raises a CollectionChanged event to any listeners /// protected override void SetItem(int index, SortDescription item) { throw new NotSupportedException(); } #endregion Protected Methods #region IList Implementations // explicit implementation to override the IsReadOnly and IsFixedSize properties bool IList.IsFixedSize { get { return true; } } bool IList.IsReadOnly { get { return true; } } #endregion IList Implementations } ////// returns an empty and non-modifiable SortDescriptionCollection /// public static readonly SortDescriptionCollection Empty = new EmptySortDescriptionCollection(); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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