mcs/class/System.Web/System.Web.UI/TemplateControlParser.cs

   1 //
   2 // System.Web.UI.TemplateControlParser
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2002 Ximian, Inc (http://www.ximian.com)
   8 // Copyright (C) 2005-2010 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Collections;
  31 using System.Globalization;
  32 using System.IO;
  33 using System.Reflection;
  34 using System.Security.Permissions;
  35 using System.Web.Compilation;
  36 using System.Web.Configuration;
  37 using System.Web.Util;
  38
  39 namespace System.Web.UI
  40 {
  41         // CAS
  42         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  43         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  44         public abstract class TemplateControlParser : BaseTemplateParser
  45         {
  46                 bool autoEventWireup = true;
  47                 bool enableViewState = true;
  48                 CompilationMode compilationMode = CompilationMode.Always;
  49 #if NET_4_0
  50                 ClientIDMode? clientIDMode;
  51 #endif
  52                 TextReader reader;
  53
  54                 protected TemplateControlParser ()
  55                 {
  56                         LoadConfigDefaults ();
  57                 }
  58
  59                 internal override void LoadConfigDefaults ()
  60                 {
  61                         base.LoadConfigDefaults ();
  62                         PagesSection ps = PagesConfig;
  63                         autoEventWireup = ps.AutoEventWireup;
  64                         enableViewState = ps.EnableViewState;
  65                         compilationMode = ps.CompilationMode;
  66                 }
  67
  68                 internal override void ProcessMainAttributes (IDictionary atts)
  69                 {
  70                         autoEventWireup = GetBool (atts, "AutoEventWireup", autoEventWireup);
  71                         enableViewState = GetBool (atts, "EnableViewState", enableViewState);
  72
  73                         string value = GetString (atts, "CompilationMode", compilationMode.ToString ());
  74                         if (!String.IsNullOrEmpty (value)) {
  75                                 try {
  76                                         compilationMode = (CompilationMode) Enum.Parse (typeof (CompilationMode), value, true);
  77                                 } catch (Exception ex) {
  78                                         ThrowParseException ("Invalid value of the CompilationMode attribute.", ex);
  79                                 }
  80                         }
  81
  82                         atts.Remove ("TargetSchema"); // Ignored
  83 #if NET_4_0
  84                         value = GetString (atts, "ClientIDMode", null);
  85                         if (!String.IsNullOrEmpty (value)) {
  86                                 try {
  87                                         clientIDMode = (ClientIDMode) Enum.Parse (typeof (ClientIDMode), value, true);
  88                                 } catch (Exception ex) {
  89                                         ThrowParseException ("Invalid value of the ClientIDMode attribute.", ex);
  90                                 }
  91                         }
  92 #endif
  93                         base.ProcessMainAttributes (atts);
  94                 }
  95
  96                 internal object GetCompiledInstance ()
  97                 {
  98                         Type type = CompileIntoType ();
  99                         if (type == null)
 100                                 return null;
 101
 102                         object ctrl = Activator.CreateInstance (type);
 103                         if (ctrl == null)
 104                                 return null;
 105
 106                         HandleOptions (ctrl);
 107                         return ctrl;
 108                 }
 109
 110                 internal override void AddDirective (string directive, IDictionary atts)
 111                 {
 112                         int cmp = String.Compare ("Register", directive, true, Helpers.InvariantCulture);
 113                         if (cmp == 0) {
 114                                 string tagprefix = GetString (atts, "TagPrefix", null);
 115                                 if (tagprefix == null || tagprefix.Trim () == "")
 116                                         ThrowParseException ("No TagPrefix attribute found.");
 117
 118                                 string ns = GetString (atts, "Namespace", null);
 119                                 string assembly = GetString (atts, "Assembly", null);
 120
 121                                 if (ns == null && assembly != null)
 122                                         ThrowParseException ("Need a Namespace attribute with Assembly.");
 123
 124                                 if (ns != null) {
 125                                         if (atts.Count != 0)
 126                                                 ThrowParseException ("Unknown attribute: " + GetOneKey (atts));
 127
 128                                         RegisterNamespace (tagprefix, ns, assembly);
 129                                         return;
 130                                 }
 131
 132                                 string tagname = GetString (atts, "TagName", null);
 133                                 string src = GetString (atts, "Src", null);
 134
 135                                 if (tagname == null && src != null)
 136                                         ThrowParseException ("Need a TagName attribute with Src.");
 137
 138                                 if (tagname != null && src == null)
 139                                         ThrowParseException ("Need a Src attribute with TagName.");
 140
 141                                 RegisterCustomControl (tagprefix, tagname, src);
 142                                 return;
 143                         }
 144
 145                         cmp = String.Compare ("Reference", directive, true, Helpers.InvariantCulture);
 146                         if (cmp == 0) {
 147                                 string vp = null;
 148                                 string page = GetString (atts, "Page", null);
 149                                 bool is_page = (page != null);
 150
 151                                 if (is_page)
 152                                         vp = page;
 153
 154                                 bool dupe = false;
 155                                 string control = GetString (atts, "Control", null);
 156                                 if (control != null)
 157                                         if (is_page)
 158                                                 dupe = true;
 159                                         else
 160                                                 vp = control;
 161
 162                                 string virtualPath = GetString (atts, "VirtualPath", null);
 163                                 if (virtualPath != null)
 164                                         if (vp != null)
 165                                                 dupe = true;
 166                                         else
 167                                                 vp = virtualPath;
 168
 169                                 if (vp == null)
 170                                         ThrowParseException ("Must provide one of the 'page', 'control' or 'virtualPath' attributes");
 171
 172                                 if (dupe)
 173                                         ThrowParseException ("Only one attribute can be specified.");
 174
 175                                 AddDependency (vp);
 176
 177                                 Type ctype;
 178                                 ctype = BuildManager.GetCompiledType (vp);
 179
 180                                 AddAssembly (ctype.Assembly, true);
 181                                 if (atts.Count != 0)
 182                                         ThrowParseException ("Unknown attribute: " + GetOneKey (atts));
 183
 184                                 return;
 185                         }
 186
 187                         base.AddDirective (directive, atts);
 188                 }
 189
 190                 internal override void HandleOptions (object obj)
 191                 {
 192                         base.HandleOptions (obj);
 193
 194                         Control ctrl = obj as Control;
 195                         ctrl.AutoEventWireup = autoEventWireup;
 196                         ctrl.EnableViewState = enableViewState;
 197                 }
 198
 199                 internal bool AutoEventWireup {
 200                         get { return autoEventWireup; }
 201                 }
 202
 203                 internal bool EnableViewState {
 204                         get { return enableViewState; }
 205                 }
 206
 207                 internal CompilationMode CompilationMode {
 208                         get { return compilationMode; }
 209                 }
 210 #if NET_4_0
 211                 internal ClientIDMode? ClientIDMode {
 212                         get { return clientIDMode; }
 213                 }
 214 #endif
 215                 internal override TextReader Reader {
 216                         get { return reader; }
 217                         set { reader = value; }
 218                 }
 219         }
 220 }
 221