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 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.IO;
  32 using System.Reflection;
  33 using System.Security.Permissions;
  34 using System.Web.Compilation;
  35 using System.Web.Util;
  36
  37 namespace System.Web.UI {
  38
  39         // CAS
  40         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  41         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  42         public abstract class TemplateControlParser : TemplateParser {
  43
  44                 bool autoEventWireup = true;
  45                 bool enableViewState = true;
  46
  47                 protected TemplateControlParser ()
  48                 {
  49                 }
  50
  51                 internal override void ProcessMainAttributes (Hashtable atts)
  52                 {
  53                         autoEventWireup = GetBool (atts, "AutoEventWireup", PagesConfig.AutoEventWireup);
  54                         enableViewState = GetBool (atts, "EnableViewState", PagesConfig.EnableViewState);
  55
  56                         atts.Remove ("TargetSchema"); // Ignored
  57
  58                         base.ProcessMainAttributes (atts);
  59                 }
  60
  61                 internal object GetCompiledInstance ()
  62                 {
  63                         Type type = CompileIntoType ();
  64                         if (type == null)
  65                                 return null;
  66
  67                         object ctrl = Activator.CreateInstance (type);
  68                         if (ctrl == null)
  69                                 return null;
  70
  71                         HandleOptions (ctrl);
  72                         return ctrl;
  73                 }
  74
  75                 internal override void AddDirective (string directive, Hashtable atts)
  76                 {
  77                         int cmp = String.Compare ("Register", directive, true);
  78                         if (cmp == 0) {
  79                                 string tagprefix = GetString (atts, "TagPrefix", null);
  80                                 if (tagprefix == null || tagprefix.Trim () == "")
  81                                         ThrowParseException ("No TagPrefix attribute found.");
  82
  83                                 string ns = GetString (atts, "Namespace", null);
  84                                 string assembly = GetString (atts, "Assembly", null);
  85
  86                                 if (ns != null && assembly == null)
  87                                         ThrowParseException ("Need an Assembly attribute with Namespace.");
  88
  89                                 if (ns == null && assembly != null)
  90                                         ThrowParseException ("Need a Namespace attribute with Assembly.");
  91
  92                                 if (ns != null) {
  93                                         if (atts.Count != 0)
  94                                                 ThrowParseException ("Unknown attribute: " + GetOneKey (atts));
  95
  96                                         AddImport (ns);
  97                                         Assembly ass = AddAssemblyByName (assembly);
  98                                         AddDependency (ass.Location);
  99                                         RootBuilder.Foundry.RegisterFoundry (tagprefix, ass, ns);
 100                                         return;
 101                                 }
 102
 103                                 string tagname = GetString (atts, "TagName", null);
 104                                 string src = GetString (atts, "Src", null);
 105
 106                                 if (tagname == null && src != null)
 107                                         ThrowParseException ("Need a TagName attribute with Src.");
 108
 109                                 if (tagname != null && src == null)
 110                                         ThrowParseException ("Need a Src attribute with TagName.");
 111
 112                                 if (!src.EndsWith (".ascx"))
 113                                         ThrowParseException ("Source file extension for controls must be .ascx");
 114
 115                                 string realpath = MapPath (src);
 116                                 if (!File.Exists (realpath))
 117                                         throw new ParseException (Location, "Could not find file \""
 118                                                 + realpath + "\".");
 119
 120                                 string vpath = UrlUtils.Combine (BaseVirtualDir, src);
 121                                 Type type = null;
 122                                 try {
 123                                         type = UserControlParser.GetCompiledType (vpath, realpath, Dependencies, Context);
 124                                 } catch (ParseException pe) {
 125                                         if (this is UserControlParser)
 126                                                 throw new ParseException (Location, pe.Message, pe);
 127                                         throw;
 128                                 }
 129
 130                                 AddAssembly (type.Assembly, true);
 131                                 RootBuilder.Foundry.RegisterFoundry (tagprefix, tagname, type);
 132                                 return;
 133                         }
 134
 135                         cmp = String.Compare ("Reference", directive, true);
 136                         if (cmp == 0) {
 137                                 string page = GetString (atts, "Page", null);
 138                                 string control = GetString (atts, "Control", null);
 139
 140                                 bool is_page = (page != null);
 141                                 if (!is_page && control == null)
 142                                         ThrowParseException ("Must provide 'page' or 'control' attribute");
 143
 144                                 if (is_page && control != null)
 145                                         ThrowParseException ("'page' and 'control' are mutually exclusive");
 146
 147                                 string filepath = (!is_page) ? control : page;
 148                                 filepath = MapPath (filepath);
 149                                 AddDependency (filepath);
 150                                 Type ctype;
 151                                 if (is_page) {
 152                                         PageParser pp = new PageParser (page, filepath, Context);
 153                                         ctype = pp.CompileIntoType ();
 154                                 } else {
 155                                         ctype = UserControlParser.GetCompiledType (control, filepath, Dependencies, Context);
 156                                 }
 157
 158                                 AddAssembly (ctype.Assembly, true);
 159                                 if (atts.Count != 0)
 160                                         ThrowParseException ("Unknown attribute: " + GetOneKey (atts));
 161
 162                                 return;
 163                         }
 164
 165                         base.AddDirective (directive, atts);
 166                 }
 167
 168                 internal override void HandleOptions (object obj)
 169                 {
 170                         Control ctrl = obj as Control;
 171                         ctrl.AutoEventWireup = autoEventWireup;
 172                         ctrl.EnableViewState = enableViewState;
 173                 }
 174
 175                 internal bool AutoEventWireup {
 176                         get { return autoEventWireup; }
 177                 }
 178
 179                 internal bool EnableViewState {
 180                         get { return enableViewState; }
 181                 }
 182         }
 183 }
 184