mcs/class/System.Web/System.Web.Compilation/PageThemeCompiler.cs

   1 //
   2 // System.Web.Compilation.PageThemeCompiler
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@ximian.com)
   6 //
   7 // (C) 2006-2009 Novell, Inc (http://www.novell.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
  32 using System;
  33 using System.CodeDom;
  34 using System.Collections;
  35 using System.Collections.Specialized;
  36 using System.Reflection;
  37 using System.Text;
  38 using System.Web.UI;
  39 using System.Web.SessionState;
  40 using System.Web.Util;
  41
  42 namespace System.Web.Compilation
  43 {
  44         class PageThemeCompiler : TemplateControlCompiler
  45         {
  46                 PageThemeParser parser;
  47
  48                 public PageThemeCompiler (PageThemeParser parser)
  49                         : base (parser)
  50                 {
  51                         this.parser = parser;
  52                 }
  53
  54                 protected internal override void CreateMethods ()
  55                 {
  56                         CodeMemberField fld;
  57                         CodeMemberProperty prop;
  58
  59                         /* override the following abstract PageTheme properties:
  60                            protected abstract string AppRelativeTemplateSourceDirectory { get; }
  61                            protected abstract IDictionary ControlSkins { get; }
  62                            protected abstract string[] LinkedStyleSheets { get; }
  63                         */
  64
  65                         /* ControlSkins */
  66                         fld = new CodeMemberField (typeof (HybridDictionary), "__controlSkins");
  67                         fld.Attributes = MemberAttributes.Private;
  68                         fld.InitExpression = new CodeObjectCreateExpression (typeof (HybridDictionary));
  69                         mainClass.Members.Add (fld);
  70
  71                         prop = new CodeMemberProperty ();
  72                         prop.Name = "ControlSkins";
  73                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
  74                         prop.Type = new CodeTypeReference (typeof (IDictionary));
  75                         prop.GetStatements.Add (new CodeMethodReturnStatement (new CodeVariableReferenceExpression ("__controlSkins")));
  76                         mainClass.Members.Add (prop);
  77
  78                         /* LinkedStyleSheets */
  79                         fld = new CodeMemberField (typeof (string[]), "__linkedStyleSheets");
  80                         fld.Attributes = MemberAttributes.Private;
  81                         fld.InitExpression = CreateLinkedStyleSheets ();
  82                         mainClass.Members.Add (fld);
  83
  84                         prop = new CodeMemberProperty ();
  85                         prop.Name = "LinkedStyleSheets";
  86                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
  87                         prop.Type = new CodeTypeReference (typeof (string[]));
  88                         prop.GetStatements.Add (new CodeMethodReturnStatement (new CodeVariableReferenceExpression ("__linkedStyleSheets")));
  89                         mainClass.Members.Add (prop);
  90
  91                         /* AppRelativeTemplateSourceDirectory */
  92                         prop = new CodeMemberProperty ();
  93                         prop.Name = "AppRelativeTemplateSourceDirectory";
  94                         prop.Attributes = MemberAttributes.Family | MemberAttributes.Override;
  95                         prop.Type = new CodeTypeReference (typeof (string));
  96                         prop.GetStatements.Add (new CodeMethodReturnStatement (
  97                                                         new CodePrimitiveExpression (
  98                                                                 VirtualPathUtility.ToAbsolute (parser.BaseVirtualDir))));
  99                         mainClass.Members.Add (prop);
 100
 101                         ControlBuilder builder = parser.RootBuilder;
 102                         if (builder.Children != null) {
 103                                 foreach (object o in builder.Children) {
 104                                         if (! (o is ControlBuilder))
 105                                                 continue;
 106                                         if (o is CodeRenderBuilder)
 107                                                 continue;
 108
 109                                         ControlBuilder b = (ControlBuilder) o;
 110                                         CreateControlSkinMethod (b);
 111                                 }
 112                         }
 113                 }
 114
 115                 CodeExpression CreateLinkedStyleSheets ()
 116                 {
 117                         string [] lss = parser.LinkedStyleSheets;
 118                         if (lss == null)
 119                                 return new CodePrimitiveExpression (null);
 120
 121                         CodeExpression [] initializers = new CodeExpression [lss.Length];
 122                         for (int i = 0; i < lss.Length; i++)
 123                                 initializers[i] = new CodePrimitiveExpression (lss[i]);
 124
 125                         return new CodeArrayCreateExpression (typeof (string), initializers);
 126                 }
 127
 128                 protected override string HandleUrlProperty (string str, MemberInfo member)
 129                 {
 130                         if (str.StartsWith ("~", StringComparison.Ordinal))
 131                                 return str;
 132
 133                         return "~/App_Themes/" + UrlUtils.Combine (
 134                                 System.IO.Path.GetFileName (parser.InputFile), str);
 135                 }
 136
 137                 void CreateControlSkinMethod (ControlBuilder builder)
 138                 {
 139                         if (builder.ControlType == null)
 140                                 return;
 141
 142                         EnsureID (builder);
 143
 144                         CodeMemberMethod method = new CodeMemberMethod ();
 145                         method.Name = "__BuildControl_" + builder.ID;
 146                         method.Parameters.Add (new CodeParameterDeclarationExpression (typeof (Control), "ctrl"));
 147
 148                         mainClass.Members.Add (method);
 149
 150                         builder.Method = method;
 151                         builder.MethodStatements = method.Statements;
 152
 153                         method.ReturnType = new CodeTypeReference (typeof (Control));
 154
 155                         // _ctrl = ($controlType)(ctrl);
 156                         //
 157                         CodeCastExpression castExpr = new CodeCastExpression (builder.ControlType, new CodeVariableReferenceExpression ("ctrl"));
 158
 159                         method.Statements.Add (new CodeVariableDeclarationStatement (builder.ControlType, "__ctrl"));
 160                         CodeAssignStatement assign = new CodeAssignStatement ();
 161                         assign.Left = ctrlVar;
 162                         assign.Right = castExpr;
 163                         method.Statements.Add (assign);
 164
 165                         CreateAssignStatementsFromAttributes (builder);
 166
 167                         if (builder.Children != null) {
 168                                 foreach (object o in builder.Children) {
 169                                         if (! (o is ControlBuilder))
 170                                                 continue;
 171
 172                                         ControlBuilder b = (ControlBuilder) o;
 173                                         if (b.ControlType == null)
 174                                                 continue;
 175
 176                                         if (b is CollectionBuilder) {
 177                                                 PropertyInfo itemsProp = null;
 178
 179                                                 try {
 180                                                         itemsProp = b.GetType().GetProperty ("Items");
 181                                                 } catch (Exception) {}
 182
 183                                                 if (itemsProp != null) {
 184                                                         /* emit a prop.Clear call before populating the collection */;
 185                                                         CodePropertyReferenceExpression prop = new CodePropertyReferenceExpression (ctrlVar,
 186                                                                                                                                                                                                                                                                                                                                                                         b.TagName);
 187                                                         CodePropertyReferenceExpression items = new CodePropertyReferenceExpression (prop,
 188                                                                                                                                                                                                                                                                                                                                                                          "Items");
 189                                                         method.Statements.Add (new CodeMethodInvokeExpression (items, "Clear"));
 190                                                 }
 191                                         }
 192
 193                                         CreateControlTree (b, false, builder.ChildrenAsProperties);
 194                                         AddChildCall (builder, b);
 195                                 }
 196                         }
 197
 198                         builder.Method.Statements.Add (new CodeMethodReturnStatement (ctrlVar));
 199                 }
 200
 201                 protected override void AddClassAttributes ()
 202                 {
 203                         base.AddClassAttributes ();
 204                 }
 205
 206                 protected override void CreateStaticFields ()
 207                 {
 208                         base.CreateStaticFields ();
 209                         ControlBuilder builder = parser.RootBuilder;
 210
 211                         if (builder.Children != null) {
 212                                 foreach (object o in builder.Children) {
 213                                         if (o is string) /* literal stuff gets ignored */
 214                                                 continue;
 215                                         if (o is CodeRenderBuilder)
 216                                                 continue;
 217                                         ControlBuilder b = (ControlBuilder) o;
 218
 219                                         EnsureID (b);
 220                                         Type controlType = b.ControlType;
 221                                         if (controlType == null)
 222                                                 continue;
 223
 224                                         string id = b.ID;
 225                                         string skinId = b.Attributes != null ? b.Attributes["skinid"] as string : null;
 226                                         if (skinId == null)
 227                                                 skinId = "";
 228
 229                                         // private static object __BuildControl__$id_skinKey = System.Web.UI.PageTheme.CreateSkinKey(typeof($controlType), "$skinID")
 230                                         //
 231                                         CodeMemberField fld = new CodeMemberField (typeof (object), "__BuildControl_" + id + "_skinKey");
 232                                         fld.Attributes = MemberAttributes.Private | MemberAttributes.Static;
 233                                         fld.InitExpression = new CodeMethodInvokeExpression (
 234                                                 new CodeTypeReferenceExpression (typeof (PageTheme)),
 235                                                 "CreateSkinKey",
 236                                                 new CodeTypeOfExpression (controlType),
 237                                                 new CodePrimitiveExpression (skinId));
 238
 239                                         mainClass.Members.Add (fld);
 240                                 }
 241                         }
 242                 }
 243
 244                 protected override void CreateConstructor (CodeStatementCollection localVars,
 245                                                            CodeStatementCollection trueStmt)
 246                 {
 247                         ControlBuilder builder = parser.RootBuilder;
 248
 249                         if (builder.Children != null) {
 250                                 foreach (object o in builder.Children) {
 251                                         if (o is string) /* literal stuff gets ignored */
 252                                                 continue;
 253                                         if (o is CodeRenderBuilder)
 254                                                 continue;
 255
 256                                         ControlBuilder b = (ControlBuilder) o;
 257                                         Type controlType = b.ControlType;
 258                                         if (controlType == null)
 259                                                 continue;
 260
 261                                         string id = b.ID;
 262
 263                                         if (localVars == null)
 264                                                 localVars = new CodeStatementCollection ();
 265
 266                                         // this.__controlSkins[__BuildControl_$id_skinKey] = new System.Web.UI.ControlSkin(typeof ($controlType), this.__BuildControl__$id)
 267                                         //
 268                                         localVars.Add (new CodeAssignStatement (new CodeIndexerExpression (new CodePropertyReferenceExpression (thisRef, "__controlSkins"),
 269                                                                                                            new CodeVariableReferenceExpression ("__BuildControl_" + id + "_skinKey")),
 270                                                                                 new CodeObjectCreateExpression (typeof (ControlSkin),
 271                                                                                                                 new CodeTypeOfExpression (controlType),
 272                                                                                                                 new CodeDelegateCreateExpression (new CodeTypeReference (typeof (ControlSkinDelegate)),
 273                                                                                                                                                   thisRef, "__BuildControl_" + id))));
 274                                 }
 275
 276                                 base.CreateConstructor (localVars, trueStmt);
 277                         }
 278                 }
 279         }
 280 }
 281
 282