//---------------------------------------------------------------------------
// <copyright file="PageContentCollection.cs" company="Microsoft">
// Copyright (C) 2004 by Microsoft Corporation. All rights reserved.
// </copyright>
//
// Description:
// Implements the PageContentCollection element
//
// History:
// 02/26/2004 - Zhenbin Xu (ZhenbinX) - Created.
//
//
//---------------------------------------------------------------------------
namespace System.Windows.Documents
{
using System;
using System.Collections.Generic;
using System.Collections;
using System.Diagnostics;
using System.Windows.Markup;
//=====================================================================
/// <summary>
/// PageContentCollection is an ordered collection of PageContent
/// </summary>
public sealed class PageContentCollection : IEnumerable<PageContent>
{
//--------------------------------------------------------------------
//
// Connstructors
//
//---------------------------------------------------------------------
#region Constructors
internal PageContentCollection(FixedDocument logicalParent)
{
_logicalParent = logicalParent;
_internalList = new List<PageContent>();
}
#endregion Constructors
//--------------------------------------------------------------------
//
// Public Methods
//
//---------------------------------------------------------------------
#region Public Methods
/// <summary>
/// Append a new PageContent to end of this collection
/// </summary>
/// <param name="newPageContent">New PageContent to be appended</param>
/// <returns>The index this new PageContent is appended at</returns>
/// <exception cref="ArgumentNullException">
/// Thrown if the argument is null
/// </exception>
/// <exception cref="InvalidOperationException">
/// Thrown if the page has been added to a PageContentCollection previously
/// </exception>
public int Add(PageContent newPageContent)
{
if (newPageContent == null)
{
throw new ArgumentNullException("newPageContent");
}
_logicalParent.AddLogicalChild(newPageContent);
InternalList.Add(newPageContent);
int index = InternalList.Count - 1;
_logicalParent.OnPageContentAppended(index);
return index;
}
#endregion Public Methods
#region IEnumerable
/// <summary>
/// <!-- see cref="System.Collections.Generic.IEnumerable<>.GetEnumerator" / -->
/// </summary>
public IEnumerator<PageContent> GetEnumerator()
{
return InternalList.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return ((IEnumerable<PageContent>)this).GetEnumerator();
}
#endregion IEnumerable
//--------------------------------------------------------------------
//
// Public Properties
//
//---------------------------------------------------------------------
#region Public Properties
/// <summary>
/// Indexer to retrieve individual PageContent contained within this collection
/// </summary>
public PageContent this[int pageIndex]
{
get
{
return InternalList[pageIndex];
}
}
/// <summary>
/// Number of PageContent items in this collection
/// </summary>
public int Count
{
get { return InternalList.Count; }
}
#endregion Public Properties
//--------------------------------------------------------------------
//
// Public Events
//
//---------------------------------------------------------------------
#region Public Event
#endregion Public Event
//--------------------------------------------------------------------
//
// Internal Methods
//
//---------------------------------------------------------------------
#region Internal Methods
internal int IndexOf(PageContent pc)
{
return InternalList.IndexOf(pc);
}
#endregion Internal Methods
//--------------------------------------------------------------------
//
// Internal Properties
//
//---------------------------------------------------------------------
//--------------------------------------------------------------------
//
// private Properties
//
//---------------------------------------------------------------------
#region Private Properties
// Aggregated IList
private IList<PageContent> InternalList
{
get
{
return _internalList;
}
}
#endregion Private Properties
//--------------------------------------------------------------------
//
// Private Methods
//
//---------------------------------------------------------------------
#region Private Methods
#endregion Private Methods
//--------------------------------------------------------------------
//
// Private Fields
//
//---------------------------------------------------------------------
#region Private Fields
private FixedDocument _logicalParent;
private List<PageContent> _internalList;
#endregion Private Fields
}
}
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