//
// System.Web.StaticSiteMapProvider.cs
//
// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
// Ben Maurer (bmaurer@users.sourceforge.net)
// Juraj Skripsky (js@hotfeet.ch)
//
// (C) 2003 Ben Maurer
// (C) 2005 Novell, Inc (http://www.novell.com)
// (C) 2007 HotFeet GmbH (http://www.hotfeet.ch)
//
// 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.Collections.Generic;
using System.Web.Util;
namespace System.Web{
public abstract class StaticSiteMapProvider : SiteMapProvider
{
Dictionary<string, SiteMapNode> keyToNode;
Dictionary<SiteMapNode, SiteMapNode> nodeToParent;
Dictionary<SiteMapNode, SiteMapNodeCollection> nodeToChildren;
Dictionary<string, SiteMapNode> urlToNode;
protected StaticSiteMapProvider ()
{
keyToNode = new Dictionary<string, SiteMapNode> ();
nodeToParent = new Dictionary<SiteMapNode, SiteMapNode> ();
nodeToChildren = new Dictionary<SiteMapNode, SiteMapNodeCollection> ();
urlToNode = new Dictionary<string, SiteMapNode> (StringComparer.InvariantCultureIgnoreCase);
}
internal protected override void AddNode (SiteMapNode node, SiteMapNode parentNode)
{
if (node == null)
throw new ArgumentNullException ("node");
lock (this_lock) {
string nodeKey = node.Key;
if (FindSiteMapNodeFromKey (nodeKey) != null && node.Provider == this)
throw new InvalidOperationException (string.Format ("A node with key '{0}' already exists.",nodeKey));
string nodeUrl = node.Url;
if (!String.IsNullOrEmpty (nodeUrl)) {
string url = MapUrl (nodeUrl);
SiteMapNode foundNode = FindSiteMapNode (url);
if (foundNode != null && String.Compare (foundNode.Url, url, RuntimeHelpers.StringComparison) == 0)
throw new InvalidOperationException (String.Format (
"Multiple nodes with the same URL '{0}' were found. " +
"StaticSiteMapProvider requires that sitemap nodes have unique URLs.",
node.Url
));
urlToNode.Add (url, node);
}
keyToNode.Add (nodeKey, node);
if (node == RootNode)
return;
if (parentNode == null)
parentNode = RootNode;
nodeToParent.Add (node, parentNode);
SiteMapNodeCollection children;
if (!nodeToChildren.TryGetValue (parentNode, out children))
nodeToChildren.Add (parentNode, children = new SiteMapNodeCollection ());
children.Add (node);
}
}
protected virtual void Clear ()
{
lock (this_lock) {
urlToNode.Clear ();
nodeToChildren.Clear ();
nodeToParent.Clear ();
keyToNode.Clear ();
}
}
public override SiteMapNode FindSiteMapNode (string rawUrl)
{
if (rawUrl == null)
throw new ArgumentNullException ("rawUrl");
if (rawUrl == String.Empty)
return null;
BuildSiteMap();
SiteMapNode node;
if (VirtualPathUtility.IsAppRelative (rawUrl))
rawUrl = VirtualPathUtility.ToAbsolute (rawUrl, HttpRuntime.AppDomainAppVirtualPath, false);
if (!urlToNode.TryGetValue (rawUrl, out node))
return null;
return CheckAccessibility (node);
}
public override SiteMapNodeCollection GetChildNodes (SiteMapNode node)
{
if (node == null)
throw new ArgumentNullException ("node");
BuildSiteMap();
SiteMapNodeCollection col;
if (!nodeToChildren.TryGetValue (node, out col))
return SiteMapNodeCollection.EmptyCollection;
SiteMapNodeCollection ret = null;
for (int n=0; n<col.Count; n++) {
if (!IsAccessibleToUser (HttpContext.Current, col[n])) {
if (ret == null) {
ret = new SiteMapNodeCollection ();
for (int m=0; m<n; m++)
ret.Add (col[m]);
}
} else if (ret != null)
ret.Add (col[n]);
}
if (ret == null)
return SiteMapNodeCollection.ReadOnly (col);
else if (ret.Count > 0)
return SiteMapNodeCollection.ReadOnly (ret);
else
return SiteMapNodeCollection.EmptyCollection;
}
public override SiteMapNode GetParentNode (SiteMapNode node)
{
if (node == null)
throw new ArgumentNullException ("node");
BuildSiteMap();
SiteMapNode parent;
nodeToParent.TryGetValue (node, out parent);
return CheckAccessibility (parent);
}
protected override void RemoveNode (SiteMapNode node)
{
if (node == null)
throw new ArgumentNullException("node");
string key = node.Key;
string url;
lock (this_lock) {
if (keyToNode.ContainsKey (key))
keyToNode.Remove (key);
url = node.Url;
if (!String.IsNullOrEmpty (url)) {
url = MapUrl (url);
if (urlToNode.ContainsKey (url))
urlToNode.Remove (url);
}
if (node == RootNode)
return;
SiteMapNode parent;
if (nodeToParent.TryGetValue (node, out parent)) {
nodeToParent.Remove (node);
if (nodeToChildren.ContainsKey (parent))
nodeToChildren [parent].Remove (node);
}
}
}
public override SiteMapNode FindSiteMapNodeFromKey (string key)
{
if (key == null)
throw new ArgumentNullException ("key");
SiteMapNode ret;
keyToNode.TryGetValue (key, out ret);
return CheckAccessibility (ret);
}
public abstract SiteMapNode BuildSiteMap ();
SiteMapNode CheckAccessibility (SiteMapNode node) {
return (node != null && IsAccessibleToUser (HttpContext.Current, node)) ? node : null;
}
internal string MapUrl (string url)
{
if (String.IsNullOrEmpty (url))
return url;
string appVPath = HttpRuntime.AppDomainAppVirtualPath;
if (String.IsNullOrEmpty (appVPath))
appVPath = "/";
if (VirtualPathUtility.IsAppRelative (url))
return VirtualPathUtility.ToAbsolute (url, appVPath, true);
else
return VirtualPathUtility.ToAbsolute (UrlUtils.Combine (appVPath, url), appVPath, true);
}
}
}
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