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

   1 //
   2 // System.Web.UI.TemplateBuilder
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2003 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.Collections.Generic;
  32 using System.ComponentModel;
  33 using System.Reflection;
  34 using System.Security.Permissions;
  35
  36 namespace System.Web.UI {
  37
  38         // CAS
  39         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  41         public class TemplateBuilder : ControlBuilder, ITemplate {
  42
  43                 string text;
  44                 TemplateContainerAttribute containerAttribute;
  45                 TemplateInstanceAttribute instanceAttribute;
  46                 List <TemplateBinding> bindings;
  47
  48                 public TemplateBuilder ()
  49                 {
  50                 }
  51
  52                 internal TemplateBuilder (ICustomAttributeProvider prov)
  53                 {
  54                         object[] ats = prov.GetCustomAttributes (typeof (TemplateContainerAttribute), true);
  55                         if (ats.Length > 0)
  56                                 containerAttribute = (TemplateContainerAttribute) ats [0];
  57
  58                         ats = prov.GetCustomAttributes (typeof (TemplateInstanceAttribute), true);
  59                         if (ats.Length > 0)
  60                                 instanceAttribute = (TemplateInstanceAttribute) ats [0];
  61                 }
  62
  63                 public virtual string Text {
  64                         get { return text; }
  65                         set { text = value; }
  66                 }
  67
  68                 internal Type ContainerType {
  69                         get { return containerAttribute != null ? containerAttribute.ContainerType : null; }
  70                 }
  71
  72                 internal TemplateInstance? TemplateInstance {
  73                         get { return instanceAttribute != null ? instanceAttribute.Instances : (TemplateInstance?)null; }
  74                 }
  75
  76                 internal BindingDirection BindingDirection {
  77                         get { return containerAttribute != null ? containerAttribute.BindingDirection : BindingDirection.TwoWay; }
  78                 }
  79
  80                 internal void RegisterBoundProperty (Type controlType, string controlProperty, string controlId, string fieldName)
  81                 {
  82                         if (bindings == null)
  83                                 bindings = new List <TemplateBinding> ();
  84                         bindings.Add (new TemplateBinding (controlType, controlProperty, controlId, fieldName));
  85                 }
  86
  87                 internal ICollection Bindings {
  88                         get { return bindings; }
  89                 }
  90
  91                 public override object BuildObject ()
  92                 {
  93                         return base.BuildObject ();
  94                 }
  95
  96                 public override void Init (TemplateParser parser,
  97                                           ControlBuilder parentBuilder,
  98                                           Type type,
  99                                           string tagName,
 100                                           string ID,
 101                                           IDictionary attribs)
 102                 {
 103                         // enough?
 104                         if (parser != null)
 105                                 FileName = parser.InputFile;
 106                         base.Init (parser, parentBuilder, type, tagName, ID, attribs);
 107                 }
 108
 109                 public virtual void InstantiateIn (Control container)
 110                 {
 111                         CreateChildren (container);
 112                 }
 113
 114                 public override bool NeedsTagInnerText ()
 115                 {
 116                         return false;
 117                 }
 118
 119                 public override void SetTagInnerText (string text)
 120                 {
 121                         this.text = text;
 122                 }
 123         }
 124
 125         internal class TemplateBinding
 126         {
 127                 public Type ControlType;
 128                 public string ControlProperty;
 129                 public string ControlId;
 130                 public string FieldName;
 131
 132                 public TemplateBinding (Type controlType, string controlProperty, string controlId, string fieldName)
 133                 {
 134                         ControlType = controlType;
 135                         ControlProperty = controlProperty;
 136                         ControlId = controlId;
 137                         FieldName = fieldName;
 138                 }
 139         }
 140 }
 141