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 #if NET_2_0
  32 using System.Collections;
  33 using System.Collections.Specialized;
  34 using System.Text;
  35 using System.Configuration.Provider;
  36 using System.Configuration;
  37 using System.Web.Configuration;
  38
  39 namespace System.Web {
  40         public static class SiteMap {
  41
  42                 private 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
  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                 public static SiteMapProvider Provider {
  71                         get {
  72                                 Init ();
  73                                 return provider;
  74                         }
  75                 }
  76                 public static SiteMapProviderCollection Providers {
  77                         get {
  78                                 Init ();
  79                                 return providers;
  80                         }
  81                 }
  82
  83                 public static event SiteMapResolveEventHandler SiteMapResolve {
  84                         add { Provider.SiteMapResolve += value; }
  85                         remove { Provider.SiteMapResolve -= value; }
  86                 }
  87
  88                 public static bool Enabled {
  89                         get {
  90                                 SiteMapSection section = (SiteMapSection) WebConfigurationManager.GetSection ("system.web/siteMap");
  91                                 return section.Enabled;
  92                         }
  93                 }
  94
  95                 static SiteMapProvider provider;
  96                 static SiteMapProviderCollection providers;
  97                 static object locker = new object ();
  98         }
  99 }
 100 #endif
 101