Components/General/Validator/Castle.Components.Validator/Validators/NonEmptyValidator.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;
  18         using System.Collections;
  19
  20         /// <summary>
  21         /// Ensures that a property was
  22         /// filled with some value
  23         /// </summary>
  24         [Serializable]
  25         public class NonEmptyValidator : AbstractValidator
  26         {
  27                 /// <summary>
  28                 /// Check that this property has a value that is not null or empty (if string)
  29                 /// </summary>
  30                 /// <param name="instance"></param>
  31                 /// <param name="fieldValue"></param>
  32                 /// <returns><c>true</c> if the field is OK</returns>
  33                 public override bool IsValid(object instance, object fieldValue)
  34                 {
  35                         return fieldValue != null && fieldValue.ToString().Length != 0;
  36                 }
  37
  38                 /// <summary>
  39                 /// Gets a value indicating whether this validator supports web validation.
  40                 /// </summary>
  41                 /// <value>
  42                 ///     <see langword="true"/> if web validation is supported; otherwise, <see langword="false"/>.
  43                 /// </value>
  44                 public override bool SupportsWebValidation
  45                 {
  46                         get { return true; }
  47                 }
  48
  49                 /// <summary>
  50                 /// Applies the web validation by setting up one or
  51                 /// more input rules on <see cref="IWebValidationGenerator"/>.
  52                 /// </summary>
  53                 /// <param name="config">The config.</param>
  54                 /// <param name="inputType">Type of the input.</param>
  55                 /// <param name="generator">The generator.</param>
  56                 /// <param name="attributes">The attributes.</param>
  57                 /// <param name="target">The target.</param>
  58                 public override void ApplyWebValidation(WebValidationConfiguration config, InputElementType inputType,
  59                                                         IWebValidationGenerator generator, IDictionary attributes, string target)
  60                 {
  61                         base.ApplyWebValidation(config, inputType, generator, attributes, target);
  62
  63                         generator.SetAsRequired(BuildErrorMessage());
  64                 }
  65
  66                 /// <summary>
  67                 /// Returns the key used to internationalize error messages
  68                 /// </summary>
  69                 /// <value></value>
  70                 protected override string MessageKey
  71                 {
  72                         get { return MessageConstants.IsRequiredMessage; }
  73                 }
  74         }
  75 }