Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / StaticSiteMapProvider.cs / 1 / StaticSiteMapProvider.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * SimpleSiteMapProvider class definition * * Copyright (c) 2002 Microsoft Corporation */ namespace System.Web { using System; using System.Collections; using System.Collections.Specialized; using System.Globalization; using System.Security.Permissions; using System.Web.UI; using System.Web.Util; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public abstract class StaticSiteMapProvider : SiteMapProvider { // Table maps nodes to their child node collections private Hashtable _childNodeCollectionTable; internal IDictionary ChildNodeCollectionTable { get { if (_childNodeCollectionTable == null) { lock (_lock) { if (_childNodeCollectionTable == null) { _childNodeCollectionTable = new Hashtable(); } } } return _childNodeCollectionTable; } } // Case sensitive table that maps key to sitemap node. private Hashtable _keyTable; internal IDictionary KeyTable { get { if (_keyTable == null) { lock (_lock) { if (_keyTable == null) { _keyTable = new Hashtable(); } } } return _keyTable; } } // Table maps nodes to their parent nodes private Hashtable _parentNodeTable; internal IDictionary ParentNodeTable { get { if (_parentNodeTable == null) { lock (_lock) { if (_parentNodeTable == null) { _parentNodeTable = new Hashtable(); } } } return _parentNodeTable; } } // Case insensitive table that maps url to sitemap node. private Hashtable _urlTable; internal IDictionary UrlTable { get { if (_urlTable == null) { lock (_lock) { if (_urlTable == null) { _urlTable = new Hashtable(StringComparer.OrdinalIgnoreCase); } } } return _urlTable; } } ////// protected internal override void AddNode(SiteMapNode node, SiteMapNode parentNode) { if (node == null) { throw new ArgumentNullException("node"); } lock (_lock) { bool validUrl = false; string url = node.Url; if (!String.IsNullOrEmpty(url)) { if (HttpRuntime.AppDomainAppVirtualPath != null) { if (!UrlPath.IsAbsolutePhysicalPath(url)) { url = UrlPath.Combine(HttpRuntime.AppDomainAppVirtualPathString, url); // Normalize url url = UrlPath.MakeVirtualPathAppAbsolute(url); } if (UrlTable[url] != null) throw new InvalidOperationException( SR.GetString(SR.XmlSiteMapProvider_Multiple_Nodes_With_Identical_Url, url)); } validUrl = true; } String key = node.Key; Debug.Assert(key != null); if (KeyTable.Contains(key)) { throw new InvalidOperationException( SR.GetString(SR.XmlSiteMapProvider_Multiple_Nodes_With_Identical_Key, key)); } KeyTable[key] = node; if (validUrl) { UrlTable[url] = node; } if (parentNode != null) { ParentNodeTable[node] = parentNode; if (ChildNodeCollectionTable[parentNode] == null) ChildNodeCollectionTable[parentNode] = new SiteMapNodeCollection(); ((SiteMapNodeCollection)ChildNodeCollectionTable[parentNode]).Add(node); } } } public abstract SiteMapNode BuildSiteMap(); // Clear tables protected virtual void Clear() { lock (_lock) { if (_childNodeCollectionTable != null) _childNodeCollectionTable.Clear(); if (_urlTable != null) _urlTable.Clear(); if (_parentNodeTable != null) _parentNodeTable.Clear(); if (_keyTable != null) _keyTable.Clear(); } } // Find sitemapnode in current provider public override SiteMapNode FindSiteMapNodeFromKey(string key) { SiteMapNode result = base.FindSiteMapNodeFromKey(key); if (result == null) { result = (SiteMapNode)KeyTable[key]; } return ReturnNodeIfAccessible(result); } // Find sitemapnode in current provider public override SiteMapNode FindSiteMapNode(string rawUrl) { if (rawUrl == null) throw new ArgumentNullException("rawUrl"); // VSWhidbey 411041. URL needs to be trimmed. rawUrl = rawUrl.Trim(); if (rawUrl.Length == 0) { return null; } // Make sure it is an app absolute url if (UrlPath.IsAppRelativePath(rawUrl)) { rawUrl = UrlPath.MakeVirtualPathAppAbsolute(rawUrl); } BuildSiteMap(); return ReturnNodeIfAccessible((SiteMapNode)UrlTable[rawUrl]); } // Return readonly child node collection public override SiteMapNodeCollection GetChildNodes(SiteMapNode node) { if (node == null) throw new ArgumentNullException("node"); BuildSiteMap(); SiteMapNodeCollection collection = (SiteMapNodeCollection)ChildNodeCollectionTable[node]; if (collection == null) { SiteMapNode childNodeFromKey = (SiteMapNode)KeyTable[node.Key]; if (childNodeFromKey != null) { collection = (SiteMapNodeCollection)ChildNodeCollectionTable[childNodeFromKey]; } } if (collection != null) { if (!SecurityTrimmingEnabled) { return SiteMapNodeCollection.ReadOnly(collection); } HttpContext context = HttpContext.Current; SiteMapNodeCollection trimmedCollection = new SiteMapNodeCollection(collection.Count); foreach (SiteMapNode subNode in collection) { if (subNode.IsAccessibleToUser(context)) { trimmedCollection.Add(subNode); } } return SiteMapNodeCollection.ReadOnly(trimmedCollection); } return SiteMapNodeCollection.Empty; } public override SiteMapNode GetParentNode(SiteMapNode node) { if (node == null) throw new ArgumentNullException("node"); BuildSiteMap(); SiteMapNode parent = (SiteMapNode)ParentNodeTable[node]; if (parent == null) { // Try to find the original node in the table using the key SiteMapNode fallbackNode = (SiteMapNode)KeyTable[node.Key]; if (fallbackNode != null) { parent = (SiteMapNode)ParentNodeTable[fallbackNode]; } } // Try the parent providers. if (parent == null && ParentProvider != null) { parent = ParentProvider.GetParentNode(node); } return ReturnNodeIfAccessible(parent); } protected internal override void RemoveNode(SiteMapNode node) { if (node == null) throw new ArgumentNullException("node"); lock (_lock) { SiteMapNode oldParent = (SiteMapNode)ParentNodeTable[node]; if (ParentNodeTable.Contains(node)) ParentNodeTable.Remove(node); if (oldParent != null) { SiteMapNodeCollection collection = (SiteMapNodeCollection)ChildNodeCollectionTable[oldParent]; if (collection != null && collection.Contains(node)) collection.Remove(node); } string url = node.Url; if (url != null && url.Length > 0 && UrlTable.Contains(url)) { UrlTable.Remove(url); } string key = node.Key; if (KeyTable.Contains(key)) { KeyTable.Remove(key); } } } } }Add single node to provider tree and sets the parent-child relation. ///
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