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.Web;
  30 using System.Web.UI.WebControls;
  31 using System.Globalization;
  32 using System.ComponentModel;
  33
  34 namespace System.Web.UI.WebControls
  35 {
  36 #if NET_2_0
  37         [ToolboxData("<{0}:CompareValidator runat=\"server\" ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  38 #else
  39         [ToolboxData("<{0}:CompareValidator runat=server ErrorMessage=\"CompareValidator\"></{0}:CompareValidator>")]
  40 #endif
  41         public class CompareValidator : BaseCompareValidator
  42         {
  43                 public CompareValidator ()
  44                 {
  45                 }
  46
  47                 protected override void AddAttributesToRender (HtmlTextWriter w)
  48                 {
  49                         if (RenderUplevel) {
  50                                 if (ControlToCompare != "")
  51                                         w.AddAttribute ("controltocompare", ControlToCompare);
  52                                 if (ValueToCompare != "")
  53                                         w.AddAttribute ("valuetocompare", ValueToCompare);
  54                                 w.AddAttribute ("operator", Operator.ToString());
  55                                 w.AddAttribute("evaluationfunction", "CompareValidatorEvaluateIsValid");
  56                         }
  57
  58                         base.AddAttributesToRender (w);
  59                 }
  60
  61                 protected override bool ControlPropertiesValid ()
  62                 {
  63                         /* if the control id is the default "", or if we're
  64                          * using the one Operator that ignores the control
  65                          * id.. */
  66                         if (ControlToCompare == "" || Operator == ValidationCompareOperator.DataTypeCheck)
  67                                 return base.ControlPropertiesValid();
  68
  69                         /* attempt to locate the ControlToCompare somewhere on the page */
  70                         Control control = Page.FindControl (ControlToCompare);
  71                         if (control == null)
  72                                 throw new HttpException (String.Format ("Unable to locate ControlToCompare with id `{0}'", ControlToCompare));
  73
  74                         return base.ControlPropertiesValid ();
  75                 }
  76
  77                 protected override bool EvaluateIsValid ()
  78                 {
  79                         /* wtf? */
  80                         if (GetControlValidationValue (ControlToValidate) == "")
  81                                 return true;
  82
  83                         string compare;
  84                         /* ControlToCompare takes precendence, if it's set. */
  85                         compare = (ControlToCompare != "" ? GetControlValidationValue (ControlToCompare) : ValueToCompare);
  86
  87                         return BaseCompareValidator.Compare (GetControlValidationValue (ControlToValidate), compare,
  88                                                              Operator,
  89                                                              this.Type);
  90                 }
  91
  92                 [DefaultValue("")]
  93                 [TypeConverter(typeof(System.Web.UI.WebControls.ValidatedControlConverter))]
  94                 [WebSysDescription ("")]
  95                 [WebCategory ("Behavior")]
  96 #if NET_2_0
  97                 [Themeable (false)]
  98 #endif
  99                 public string ControlToCompare {
 100                         get {
 101                                 return ViewState.GetString ("ControlToCompare", String.Empty);
 102                         }
 103                         set {
 104                                 ViewState["ControlToCompare"] = value;
 105                         }
 106                 }
 107
 108                 [DefaultValue(ValidationCompareOperator.Equal)]
 109                 [WebSysDescription ("")]
 110                 [WebCategory ("Behavior")]
 111 #if NET_2_0
 112                 [Themeable (false)]
 113 #endif
 114                 public ValidationCompareOperator Operator {
 115                         get {
 116                                 return (ValidationCompareOperator)ViewState.GetInt ("Operator", (int)ValidationCompareOperator.Equal);
 117                         }
 118
 119                         set {
 120                                 ViewState ["Operator"] = (int)value;
 121                         }
 122                 }
 123
 124 #if !NET_2_0
 125                 [Bindable(true)]
 126 #endif
 127                 [DefaultValue("")]
 128                 [WebSysDescription ("")]
 129                 [WebCategory ("Behavior")]
 130 #if NET_2_0
 131                 [Themeable (false)]
 132 #endif
 133                 public string ValueToCompare {
 134                         get {
 135                                 return ViewState.GetString ("ValueToCompare", String.Empty);
 136                         }
 137                         set {
 138                                 ViewState ["ValueToCompare"] = value;
 139                         }
 140                 }
 141         }
 142 }