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

   1 //
   2 // System.Web.UI.WebControls.CompareValidator
   3 //
   4 // Authors:
   5 //      Chris Toshok (toshok@novell.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Globalization;
  30 using System.ComponentModel;
  31 using System.Security.Permissions;
  32
  33 namespace System.Web.UI.WebControls {
  34         // CAS
  35         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  36         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  37         // attributes
  38 #if NET_2_0
  39         [ToolboxData("<{0}:CompareValidator runat=\"server\" ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  40 #else
  41         [ToolboxData("<{0}:CompareValidator runat=server ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  42 #endif
  43         public class CompareValidator : BaseCompareValidator
  44         {
  45                 public CompareValidator ()
  46                 {
  47                 }
  48
  49                 protected override void AddAttributesToRender (HtmlTextWriter w)
  50                 {
  51                         if (RenderUplevel) {
  52                                 if (ControlToCompare != "")
  53                                         w.AddAttribute ("controltocompare", ControlToCompare);
  54                                 if (ValueToCompare != "")
  55                                         w.AddAttribute ("valuetocompare", ValueToCompare);
  56                                 w.AddAttribute ("operator", Operator.ToString());
  57                                 w.AddAttribute("evaluationfunction", "CompareValidatorEvaluateIsValid");
  58                         }
  59
  60                         base.AddAttributesToRender (w);
  61                 }
  62
  63                 protected override bool ControlPropertiesValid ()
  64                 {
  65                         /* if the control id is the default "", or if we're
  66                          * using the one Operator that ignores the control
  67                          * id.. */
  68                         if (ControlToCompare == "" || Operator == ValidationCompareOperator.DataTypeCheck)
  69                                 return base.ControlPropertiesValid();
  70
  71                         /* attempt to locate the ControlToCompare somewhere on the page */
  72                         Control control = NamingContainer.FindControl (ControlToCompare);
  73                         if (control == null)
  74                                 throw new HttpException (String.Format ("Unable to locate ControlToCompare with id `{0}'", ControlToCompare));
  75
  76                         return base.ControlPropertiesValid ();
  77                 }
  78
  79                 protected override bool EvaluateIsValid ()
  80                 {
  81                         /* wtf? */
  82                         if (GetControlValidationValue (ControlToValidate) == "")
  83                                 return true;
  84
  85                         string compare;
  86                         /* ControlToCompare takes precendence, if it's set. */
  87                         compare = (ControlToCompare != "" ? GetControlValidationValue (ControlToCompare) : ValueToCompare);
  88
  89                         return BaseCompareValidator.Compare (GetControlValidationValue (ControlToValidate), compare,
  90                                                              Operator,
  91                                                              this.Type);
  92                 }
  93
  94                 [DefaultValue("")]
  95                 [TypeConverter(typeof(System.Web.UI.WebControls.ValidatedControlConverter))]
  96                 [WebSysDescription ("")]
  97                 [WebCategory ("Behavior")]
  98 #if NET_2_0
  99                 [Themeable (false)]
 100 #endif
 101                 public string ControlToCompare {
 102                         get { return ViewState.GetString ("ControlToCompare", String.Empty); }
 103                         set { ViewState["ControlToCompare"] = value; }
 104                 }
 105
 106                 [DefaultValue(ValidationCompareOperator.Equal)]
 107                 [WebSysDescription ("")]
 108                 [WebCategory ("Behavior")]
 109 #if NET_2_0
 110                 [Themeable (false)]
 111 #endif
 112                 public ValidationCompareOperator Operator {
 113                         get { return (ValidationCompareOperator)ViewState.GetInt ("Operator", (int)ValidationCompareOperator.Equal); }
 114                         set { ViewState ["Operator"] = (int)value; }
 115                 }
 116
 117 #if !NET_2_0
 118                 [Bindable(true)]
 119 #endif
 120                 [DefaultValue("")]
 121                 [WebSysDescription ("")]
 122                 [WebCategory ("Behavior")]
 123 #if NET_2_0
 124                 [Themeable (false)]
 125 #endif
 126                 public string ValueToCompare {
 127                         get { return ViewState.GetString ("ValueToCompare", String.Empty); }
 128                         set { ViewState ["ValueToCompare"] = value; }
 129                 }
 130         }
 131 }