mcs/class/System.Web.DynamicData/System.Web.DynamicData/DynamicValidator.cs

   1 //
   2 // DynamicValidator.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //      Marek Habersack <mhabersack@novell.com>
   7 //
   8 // Copyright (C) 2008-2009 Novell Inc. http://novell.com
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31 using System;
  32 using System.Collections;
  33 using System.Collections.Generic;
  34 using System.Collections.Specialized;
  35 using System.ComponentModel;
  36 using System.Drawing;
  37 using System.Globalization;
  38 using System.Security.Permissions;
  39 using System.Security.Principal;
  40 using System.Web.Caching;
  41 using System.Web.UI;
  42 using System.Web.UI.WebControls;
  43
  44 namespace System.Web.DynamicData
  45 {
  46         [ToolboxBitmap (typeof(DynamicValidator), "DynamicValidator.ico")]
  47         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  48         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  49         public class DynamicValidator : BaseValidator
  50         {
  51                 IDynamicDataSource dynamicDataSource;
  52
  53                 IDynamicDataSource DynamicDataSource {
  54                         get {
  55                                 if (dynamicDataSource == null)
  56                                         dynamicDataSource = this.FindDataSourceControl ();
  57
  58                                 return dynamicDataSource;
  59                         }
  60                 }
  61
  62                 [Themeable (false)]
  63                 [Browsable (false)]
  64                 public MetaColumn Column { get; set; }
  65
  66                 [Themeable (false)]
  67                 [Browsable (false)]
  68                 public string ColumnName {
  69                         get {
  70                                 // LAMESPEC: returns Column.Name if Column is not null, String.Empty
  71                                 // otherwise
  72                                 MetaColumn column = Column;
  73                                 return column != null ? column.Name : String.Empty;
  74                         }
  75                 }
  76
  77                 protected virtual Exception ValidationException { get; set; }
  78
  79                 protected override bool ControlPropertiesValid ()
  80                 {
  81                         return base.ControlPropertiesValid () && DynamicDataSource != null;
  82                 }
  83
  84                 [MonoTODO]
  85                 protected override bool EvaluateIsValid ()
  86                 {
  87                         Exception ex = ValidationException;
  88                         if (ex != null) {
  89                                 ErrorMessage = HttpUtility.HtmlEncode (ex.Message);
  90                                 return false;
  91                         }
  92
  93                         string controlToValidate = ControlToValidate;
  94                         if (String.IsNullOrEmpty (controlToValidate))
  95                                 return true;
  96
  97                         GetControlValidationValue (controlToValidate);
  98
  99                         return true;
 100                 }
 101
 102                 void HandleException (object sender, DynamicValidatorEventArgs args)
 103                 {
 104                         if (args == null)
 105                                 return;
 106
 107                         ValidateException (args.Exception);
 108                 }
 109
 110                 protected override void OnInit (EventArgs e)
 111                 {
 112                         IDynamicDataSource dds = DynamicDataSource;
 113                         if (dds != null)
 114                                 dds.Exception += HandleException;
 115
 116                         base.OnInit (e);
 117                 }
 118
 119                 [MonoTODO]
 120                 protected virtual void ValidateException (Exception exception)
 121                 {
 122                         // http://forums.asp.net/p/1287649/2478409.aspx#2478409
 123                         //
 124                         // The above suggests that IDynamicValidatorException.InnerExceptions is
 125                         // indexed on column name
 126                         //
 127                         throw new NotImplementedException ();
 128                 }
 129         }
 130 }