Components/General/Validator/Castle.Components.Validator/Validators/SameAsValidator.cs

   1 // Copyright 2004-2007 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.Components.Validator
  16 {
  17         using System.Collections;
  18
  19         /// <summary>
  20         /// Validates that the content has the same
  21         /// value as the property informed.
  22         /// </summary>
  23         public class SameAsValidator : AbstractValidator
  24         {
  25                 private readonly string propertyToCompare;
  26
  27                 /// <summary>
  28                 /// Initializes a new instance of the <see cref="SameAsValidator"/> class.
  29                 /// </summary>
  30                 /// <param name="propertyToCompare">The property to compare.</param>
  31                 public SameAsValidator(string propertyToCompare)
  32                 {
  33                         this.propertyToCompare = propertyToCompare;
  34                 }
  35
  36
  37                 /// <summary>
  38                 /// Gets the property to compare.
  39                 /// </summary>
  40                 /// <value>The property to compare.</value>
  41                 public string PropertyToCompare
  42                 {
  43                         get { return propertyToCompare; }
  44                 }
  45
  46                 /// <summary>
  47                 /// Validates that the <c>fieldValue</c>
  48                 /// is the same as the property set through the constructor.
  49                 /// </summary>
  50                 /// <param name="instance">The target type instance</param>
  51                 /// <param name="fieldValue">The property/field value. It can be null.</param>
  52                 /// <returns>
  53                 ///     <c>true</c> if the value is accepted (has passed the validation test)
  54                 /// </returns>
  55                 public override bool IsValid(object instance, object fieldValue)
  56                 {
  57                         object referenceValue = GetFieldOrPropertyValue(instance, propertyToCompare);
  58
  59                         if (fieldValue is string && string.IsNullOrEmpty((string) fieldValue))
  60                         {
  61                                 fieldValue = null;
  62                         }
  63                         if (fieldValue is string && string.IsNullOrEmpty((string) referenceValue))
  64                         {
  65                                 referenceValue = null;
  66                         }
  67
  68                         if (fieldValue == null && referenceValue == null)
  69                         {
  70                                 return true;
  71                         }
  72                         else if (fieldValue != null)
  73                         {
  74                                 return fieldValue.Equals(referenceValue);
  75                         }
  76                         else
  77                         {
  78                                 return referenceValue.Equals(fieldValue);
  79                         }
  80                 }
  81
  82                 /// <summary>
  83                 /// Gets a value indicating whether this validator supports browser validation.
  84                 /// </summary>
  85                 /// <value>
  86                 ///     <see langword="true"/> if browser validation is supported; otherwise, <see langword="false"/>.
  87                 /// </value>
  88                 public override bool SupportsBrowserValidation
  89                 {
  90                         get { return true; }
  91                 }
  92
  93                 /// <summary>
  94                 /// Applies the browser validation by setting up one or
  95                 /// more input rules on <see cref="IBrowserValidationGenerator"/>.
  96                 /// </summary>
  97                 /// <param name="config">The config.</param>
  98                 /// <param name="inputType">Type of the input.</param>
  99                 /// <param name="generator">The generator.</param>
 100                 /// <param name="attributes">The attributes.</param>
 101                 /// <param name="target">The target.</param>
 102                 public override void ApplyBrowserValidation(BrowserValidationConfiguration config, InputElementType inputType,
 103                                                             IBrowserValidationGenerator generator, IDictionary attributes,
 104                                                             string target)
 105                 {
 106                         base.ApplyBrowserValidation(config, inputType, generator, attributes, target);
 107
 108                         generator.SetAsSameAs(target, propertyToCompare, BuildErrorMessage());
 109                 }
 110
 111                 /// <summary>
 112                 /// Returns the key used to internationalize error messages
 113                 /// </summary>
 114                 /// <value></value>
 115                 protected override string MessageKey
 116                 {
 117                         get { return MessageConstants.SameAsMessage; }
 118                 }
 119         }
 120 }