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//------------------------------------------------------------------------------
// <copyright file="XmlHierarchicalDataSourceView.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing.Design;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.Util;
using System.Xml;
/// <devdoc>
/// Represents a hierarchical view of an XmlDataSource.
/// </devdoc>
public class XmlHierarchicalDataSourceView : HierarchicalDataSourceView {
private XmlDataSource _owner;
private string _viewPath;
/// <devdoc>
/// Creates a new instance of XmlHierarchicalDataSourceView.
/// </devdoc>
internal XmlHierarchicalDataSourceView(XmlDataSource owner, string viewPath) {
Debug.Assert(owner != null);
_owner = owner;
_viewPath = viewPath;
}
public override IHierarchicalEnumerable Select() {
XmlNode root = _owner.GetXmlDocument();
XmlNodeList nodes = null;
if (!String.IsNullOrEmpty(_viewPath)) {
XmlNode node = root.SelectSingleNode(_viewPath);
if (node != null) {
nodes = node.ChildNodes;
}
}
else {
if (_owner.XPath.Length > 0) {
nodes = root.SelectNodes(_owner.XPath);
}
else {
nodes = root.ChildNodes;
}
}
return new XmlHierarchicalEnumerable(nodes);
}
}
}
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