mcs/class/System.Web/System.Web.UI.WebControls/RangeValidator.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.Globalization;
  29 using System.Security.Permissions;
  30
  31 // Modeled after Nikhil Kothari's sample in "ASP Server Controls and Components", pp368
  32
  33 namespace System.Web.UI.WebControls {
  34
  35         // CAS
  36         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  37         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  38         // attributes
  39 #if NET_2_0
  40         [ToolboxData("<{0}:RangeValidator runat=\"server\" ErrorMessage=\"RangeValidator\"></{0}:RangeValidator>")]
  41 #else
  42         [ToolboxData("<{0}:RangeValidator runat=server ErrorMessage=\"RangeValidator\"></{0}:RangeValidator>")]
  43 #endif
  44         public class RangeValidator : BaseCompareValidator {
  45                 #region Public Constructors
  46                 public RangeValidator() {
  47                 }
  48                 #endregion      // Public Constructors
  49
  50                 #region Public Instance Properties
  51 #if NET_2_0
  52                 [Themeable (false)]
  53 #else
  54                 [Bindable(true)]
  55 #endif
  56                 [DefaultValue("")]
  57                 [WebSysDescription ("")]
  58                 [WebCategory ("Behavior")]
  59                 public string MaximumValue {
  60                         get {
  61                                 return ViewState.GetString("MaximumValue", String.Empty);
  62                         }
  63
  64                         set {
  65                                 ViewState["MaximumValue"] = value;
  66                         }
  67                 }
  68
  69 #if NET_2_0
  70                 [Themeable (false)]
  71 #else
  72                 [Bindable(true)]
  73 #endif
  74                 [DefaultValue("")]
  75                 [WebSysDescription ("")]
  76                 [WebCategory ("Behavior")]
  77                 public string MinimumValue {
  78                         get {
  79                                 return ViewState.GetString("MinimumValue", String.Empty);
  80                         }
  81
  82                         set {
  83                                 ViewState["MinimumValue"] = value;
  84                         }
  85                 }
  86                 #endregion      // Public Instance Properties
  87
  88                 #region Public Instance Methods
  89                 protected override void AddAttributesToRender(HtmlTextWriter writer) {
  90                         base.AddAttributesToRender (writer);
  91
  92                         if (RenderUplevel) {
  93                                 writer.AddAttribute("evaluationfunction", "RangeValidatorEvaluateIsValid"); // FIXME - we need to define this in client code
  94                                 writer.AddAttribute("minimumValue", MinimumValue.ToString(CultureInfo.InvariantCulture));
  95                                 writer.AddAttribute("maximumValue", MaximumValue.ToString(CultureInfo.InvariantCulture));
  96                         }
  97                 }
  98
  99                 protected override bool ControlPropertiesValid() {
 100                         if (!CanConvert(MinimumValue, this.Type)) {
 101                                 throw new HttpException("Minimum value cannot be converterd to type " + this.Type.ToString());
 102                         }
 103                         if (!CanConvert(MaximumValue, this.Type)) {
 104                                 throw new HttpException("Maximum value cannot be converterd to type " + this.Type.ToString());
 105                         }
 106                         if (this.Type != ValidationDataType.String) {
 107                                 if (Compare(MinimumValue, MaximumValue, ValidationCompareOperator.GreaterThan, this.Type)) {
 108                                         throw new HttpException("Maximum value must be equal or bigger than Minimum value");
 109                                 }
 110                         }
 111                         return base.ControlPropertiesValid ();
 112                 }
 113
 114                 protected override bool EvaluateIsValid() {
 115                         string  control_value;
 116
 117                         control_value = GetControlValidationValue(this.ControlToValidate);
 118                         if (control_value == null || control_value == "") {
 119                                 return true;
 120                         }
 121
 122                         control_value = control_value.Trim();
 123
 124                         if (Compare(control_value, MinimumValue, ValidationCompareOperator.GreaterThanEqual, this.Type)) {
 125                                 if (Compare(control_value, MaximumValue, ValidationCompareOperator.LessThanEqual, this.Type)) {
 126                                         return true;
 127                                 }
 128                         }
 129                         return false;
 130                 }
 131                 #endregion      // Public Instance Methods
 132         }
 133 }