mcs/class/System.Web/System.Web/SiteMap.cs

   1 //
   2 // System.Web.SiteMap
   3 //
   4 // Authors:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //
   7 // (C) 2003 Ben Maurer
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Collections;
  32 using System.Collections.Specialized;
  33 using System.Text;
  34 using System.Configuration.Provider;
  35 using System.Configuration;
  36 using System.Web.Configuration;
  37
  38 namespace System.Web
  39 {
  40         public static class SiteMap
  41         {
  42                 static void Init ()
  43                 {
  44                         lock (locker) {
  45                                 if (provider == null) {
  46                                         SiteMapSection section = (SiteMapSection) WebConfigurationManager.GetSection ("system.web/siteMap");
  47
  48                                         if (!section.Enabled)
  49                                                 throw new InvalidOperationException ("This feature is currently disabled.  Please enable it in the system.web/siteMap section in the web.config file.");
  50
  51                                         providers = section.ProvidersInternal;
  52                                         providers.SetReadOnly ();
  53                                         provider = providers[section.DefaultProvider];
  54
  55                                         if (provider == null)
  56                                                 throw new ConfigurationErrorsException (
  57                                                         String.Format ("The default sitemap provider '{0}' does not exist in the provider collection.", section.DefaultProvider));
  58                                 }
  59                         }
  60                 }
  61
  62                 public static SiteMapNode CurrentNode {
  63                         get { return Provider.CurrentNode; }
  64                 }
  65
  66                 public static SiteMapNode RootNode {
  67                         get { return Provider.RootNode; }
  68                 }
  69
  70
  71                 public static SiteMapProvider Provider {
  72                         get {
  73                                 Init ();
  74                                 return provider;
  75                         }
  76                 }
  77                 public static SiteMapProviderCollection Providers {
  78                         get {
  79                                 Init ();
  80                                 return providers;
  81                         }
  82                 }
  83
  84                 public static event SiteMapResolveEventHandler SiteMapResolve {
  85                         add { Provider.SiteMapResolve += value; }
  86                         remove { Provider.SiteMapResolve -= value; }
  87                 }
  88
  89                 public static bool Enabled {
  90                         get {
  91                                 SiteMapSection section = (SiteMapSection) WebConfigurationManager.GetSection ("system.web/siteMap");
  92                                 return section.Enabled;
  93                         }
  94                 }
  95
  96 #if TARGET_JVM
  97                 const string SiteMap_provider = "SiteMap_provider";
  98                 const string SiteMap_providers = "SiteMap_providers";
  99                 static SiteMapProvider provider
 100                 {
 101                         get { return (SiteMapProvider) AppDomain.CurrentDomain.GetData (SiteMap_provider); }
 102                         set { AppDomain.CurrentDomain.SetData (SiteMap_provider, value); }
 103                 }
 104                 static SiteMapProviderCollection providers
 105                 {
 106                         get { return (SiteMapProviderCollection) AppDomain.CurrentDomain.GetData (SiteMap_providers); }
 107                         set { AppDomain.CurrentDomain.SetData (SiteMap_providers, value); }
 108                 }
 109 #else
 110                 static SiteMapProvider provider;
 111                 static SiteMapProviderCollection providers;
 112 #endif
 113                 static object locker = new object ();
 114         }
 115 }
 116
 117