mcs/class/System.Web/System.Web.UI.WebControls/CustomValidator.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //
  25 //
  26
  27 using System.ComponentModel;
  28 using System.Security.Permissions;
  29
  30 namespace System.Web.UI.WebControls {
  31         // CAS
  32         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  33         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  34         // attributes
  35         [DefaultEvent("ServerValidate")]
  36 #if NET_2_0
  37         [ToolboxData("<{0}:CustomValidator runat=\"server\" ErrorMessage=\"CustomValidator\"></{0}:CustomValidator>")]
  38 #else
  39         [ToolboxData("<{0}:CustomValidator runat=server ErrorMessage=\"CustomValidator\"></{0}:CustomValidator>")]
  40 #endif
  41         public class CustomValidator : BaseValidator {
  42                 #region Public Constructors
  43                 public CustomValidator() {
  44                 }
  45                 #endregion      // Public Constructors
  46
  47                 #region Public Instance Properties
  48                 [DefaultValue("")]
  49                 [WebSysDescription ("")]
  50                 [WebCategory ("Behavior")]
  51 #if NET_2_0
  52                 [Themeable (false)]
  53 #endif
  54                 public string ClientValidationFunction {
  55                         get { return ViewState.GetString("ClientValidationFunction", ""); }
  56                         set { ViewState["ClientValidationFunction"] = value; }
  57                 }
  58
  59 #if NET_2_0
  60                 [MonoTODO]
  61                 [Themeable (false)]
  62                 [DefaultValue (false)]
  63                 public bool ValidateEmptyText {
  64                         get {
  65                                 throw new NotImplementedException ();
  66                         }
  67                         set {
  68                                 throw new NotImplementedException ();
  69                         }
  70                 }
  71 #endif
  72                 #endregion      // Public Instance Properties
  73
  74                 #region Public Instance Methods
  75                 protected override void AddAttributesToRender(HtmlTextWriter writer) {
  76                         base.AddAttributesToRender (writer);
  77
  78                         if (base.RenderUplevel) {
  79                                 string s;
  80
  81                                 writer.AddAttribute("evaluationfunction", "CustomValidatorEvaluateIsValid");
  82
  83                                 s = ClientValidationFunction;
  84                                 if (s != string.Empty) {
  85                                         writer.AddAttribute("clientvalidationfunction", s);
  86                                 }
  87                         }
  88                 }
  89
  90                 protected override bool ControlPropertiesValid ()
  91                 {
  92                         if (ControlToValidate == "")
  93                                 return true;
  94                         return base.ControlPropertiesValid ();
  95                 }
  96
  97                 protected override bool EvaluateIsValid() {
  98                         if (ControlToValidate.Length > 0) {
  99                                 return OnServerValidate(GetControlValidationValue(ControlToValidate));
 100                         }
 101                         return OnServerValidate(string.Empty);
 102                 }
 103
 104                 protected virtual bool OnServerValidate(string value) {
 105                         if (ServerValidate != null) {
 106                                 ServerValidateEventArgs e;
 107
 108                                 e = new ServerValidateEventArgs(value, true);
 109                                 ServerValidate(this, e);
 110                                 return e.IsValid;
 111                         }
 112                         return true;
 113                 }
 114                 #endregion      // Public Instance Methods
 115
 116                 #region Events
 117                 [WebSysDescription ("")]
 118                 [WebCategory ("Behavior")]
 119                 public event ServerValidateEventHandler ServerValidate;
 120                 #endregion      // Events
 121         }
 122 }