mcs/class/System.Web/System.Web.Configuration/WebControlsSectionHandler.cs

   1 //
   2 // System.Web.Configuration.WebControlsSectionHandler
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2003 Ximian, Inc (http://www.ximian.com)
   8 //
   9
  10 using System;
  11 using System.Configuration;
  12 using System.IO;
  13 using System.Web;
  14 using System.Xml;
  15
  16 namespace System.Web.Configuration
  17 {
  18         class WebControlsConfig
  19         {
  20                 static WebControlsConfig instance;
  21                 string scriptsVDir;
  22                 string configFilePath;
  23
  24                 public WebControlsConfig (WebControlsConfig parent, object context)
  25                 {
  26                         configFilePath = context as string;
  27                         if (parent == null)
  28                                 return;
  29
  30                         scriptsVDir = parent.scriptsVDir;
  31                         if (scriptsVDir != null)
  32                                 configFilePath = parent.configFilePath;
  33                 }
  34
  35                 public void SetClientScriptsLocation (string location, out string error)
  36                 {
  37                         error = null;
  38                         if (location == null || location.Length == 0) {
  39                                 error = "empty or null value for clientScriptsLocation";
  40                                 return;
  41                         }
  42
  43                         if (location [0] != '/')
  44                                 location = "/" + location;
  45
  46                         string [] splitted = location.Split ('/');
  47                         int end = splitted.Length;
  48                         for (int i = 0; i < end; i++)
  49                                 splitted [i] = HttpUtility.UrlEncode (splitted [i]);
  50
  51                         scriptsVDir = String.Join ("/", splitted);
  52                 }
  53
  54                 public string ScriptsPhysicalDirectory {
  55                         get { return Path.Combine (Path.GetDirectoryName (configFilePath), "web_scripts"); }
  56                 }
  57
  58                 public string ScriptsVirtualDirectory {
  59                         get { return scriptsVDir; }
  60                         set { scriptsVDir = value; }
  61                 }
  62
  63                 static public WebControlsConfig Instance {
  64                         get {
  65                                 //TODO: use HttpContext to get the configuration
  66                                 if (instance != null)
  67                                         return instance;
  68
  69                                 lock (typeof (WebControlsConfig)) {
  70                                         if (instance != null)
  71                                                 return instance;
  72
  73                                         instance = (WebControlsConfig) ConfigurationSettings.GetConfig ("system.web/webControls");
  74                                 }
  75
  76                                 return instance;
  77                         }
  78                 }
  79         }
  80
  81         class WebControlsSectionHandler : IConfigurationSectionHandler
  82         {
  83                 public object Create (object parent, object context, XmlNode section)
  84                 {
  85                         WebControlsConfig config = new WebControlsConfig (parent as WebControlsConfig, context);
  86
  87                         if (section.Attributes == null && section.Attributes.Count == 0)
  88                                 ThrowException ("Lack of clientScriptsLocation attribute", section);
  89
  90                         string clientLocation = AttValue ("clientScriptsLocation", section, false);
  91                         if (section.Attributes != null && section.Attributes.Count != 0)
  92                                 HandlersUtil.ThrowException ("Unrecognized attribute", section);
  93
  94                         string error;
  95                         config.SetClientScriptsLocation (clientLocation, out error);
  96                         if (error != null)
  97                                 HandlersUtil.ThrowException (error, section);
  98
  99                         return config;
 100                 }
 101
 102                 // To save some typing...
 103                 static string AttValue (string name, XmlNode node, bool optional)
 104                 {
 105                         return HandlersUtil.ExtractAttributeValue (name, node, optional);
 106                 }
 107
 108                 static string AttValue (string name, XmlNode node)
 109                 {
 110                         return HandlersUtil.ExtractAttributeValue (name, node, true);
 111                 }
 112
 113                 static void ThrowException (string message, XmlNode node)
 114                 {
 115                         HandlersUtil.ThrowException (message, node);
 116                 }
 117                 //
 118         }
 119 }
 120