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 //
  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;
  32 using System.Configuration;
  33 using System.IO;
  34 using System.Web;
  35 using System.Xml;
  36
  37 namespace System.Web.Configuration
  38 {
  39         class WebControlsConfig
  40         {
  41                 static WebControlsConfig instance;
  42                 string scriptsVDir;
  43                 string configFilePath;
  44
  45                 public WebControlsConfig (WebControlsConfig parent, object context)
  46                 {
  47                         configFilePath = context as string;
  48                         if (parent == null)
  49                                 return;
  50
  51                         scriptsVDir = parent.scriptsVDir;
  52                         if (scriptsVDir != null)
  53                                 configFilePath = parent.configFilePath;
  54                 }
  55
  56                 public void SetClientScriptsLocation (string location, out string error)
  57                 {
  58                         error = null;
  59                         if (location == null || location.Length == 0) {
  60                                 error = "empty or null value for clientScriptsLocation";
  61                                 return;
  62                         }
  63
  64                         if (location [0] != '/')
  65                                 location = "/" + location;
  66
  67                         string [] splitted = location.Split ('/');
  68                         int end = splitted.Length;
  69                         for (int i = 0; i < end; i++)
  70                                 splitted [i] = HttpUtility.UrlEncode (splitted [i]);
  71
  72                         scriptsVDir = String.Join ("/", splitted);
  73                 }
  74
  75                 public string ScriptsPhysicalDirectory {
  76                         get { return Path.Combine (Path.GetDirectoryName (configFilePath), "web_scripts"); }
  77                 }
  78
  79                 public string ScriptsVirtualDirectory {
  80                         get { return scriptsVDir; }
  81                         set { scriptsVDir = value; }
  82                 }
  83
  84                 static public WebControlsConfig Instance {
  85                         get {
  86                                 //TODO: use HttpContext to get the configuration
  87                                 if (instance != null)
  88                                         return instance;
  89
  90                                 lock (typeof (WebControlsConfig)) {
  91                                         if (instance != null)
  92                                                 return instance;
  93
  94                                         instance = (WebControlsConfig) ConfigurationSettings.GetConfig ("system.web/webControls");
  95                                 }
  96
  97                                 return instance;
  98                         }
  99                 }
 100         }
 101
 102         class WebControlsSectionHandler : IConfigurationSectionHandler
 103         {
 104                 public object Create (object parent, object context, XmlNode section)
 105                 {
 106                         WebControlsConfig config = new WebControlsConfig (parent as WebControlsConfig, context);
 107
 108                         if (section.Attributes == null && section.Attributes.Count == 0)
 109                                 ThrowException ("Lack of clientScriptsLocation attribute", section);
 110
 111                         string clientLocation = AttValue ("clientScriptsLocation", section, false);
 112                         if (section.Attributes != null && section.Attributes.Count != 0)
 113                                 HandlersUtil.ThrowException ("Unrecognized attribute", section);
 114
 115                         string error;
 116                         config.SetClientScriptsLocation (clientLocation, out error);
 117                         if (error != null)
 118                                 HandlersUtil.ThrowException (error, section);
 119
 120                         return config;
 121                 }
 122
 123                 // To save some typing...
 124                 static string AttValue (string name, XmlNode node, bool optional)
 125                 {
 126                         return HandlersUtil.ExtractAttributeValue (name, node, optional);
 127                 }
 128
 129                 static string AttValue (string name, XmlNode node)
 130                 {
 131                         return HandlersUtil.ExtractAttributeValue (name, node, true);
 132                 }
 133
 134                 static void ThrowException (string message, XmlNode node)
 135                 {
 136                         HandlersUtil.ThrowException (message, node);
 137                 }
 138                 //
 139         }
 140 }
 141