Components/Validator/Castle.Components.Validator/IValidator.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         using System.Reflection;
  19
  20         /// <summary>
  21         /// Defines the basic contract for validators.
  22         /// <para>
  23         /// To create a new validation you should use <see cref="AbstractValidator"/> as it
  24         /// implements most of the common methods and properties.
  25         /// </para>
  26         /// <para>
  27         /// The validation should happen at <c>IsValid</c>, and if the validator can configure
  28         /// a client-side validation script, it should use the <see cref="SupportsBrowserValidation"/>
  29         /// to indicate that it does support client-side validation and also implement the
  30         /// <see cref="ApplyBrowserValidation"/> to configure it.
  31         /// </para>
  32         /// </summary>
  33         public interface IValidator
  34         {
  35                 /// <summary>
  36                 /// Implementors should perform any initialization logic
  37                 /// </summary>
  38                 /// <param name="validationRegistry">The validation registry.</param>
  39                 /// <param name="property">The target property</param>
  40                 void Initialize(IValidatorRegistry validationRegistry, PropertyInfo property);
  41
  42                 /// <summary>
  43                 /// The target property
  44                 /// </summary>
  45                 PropertyInfo Property { get; }
  46
  47                 /// <summary>
  48                 /// Defines when to run the validation.
  49                 /// Defaults to <c>RunWhen.Everytime</c>
  50                 /// </summary>
  51                 RunWhen RunWhen { get; set; }
  52
  53                 /// <summary>
  54                 /// Gets or sets the validation execution order.
  55                 /// </summary>
  56                 /// <value>The execution order.</value>
  57                 int ExecutionOrder { get; set; }
  58
  59                 /// <summary>
  60                 /// The error message to be displayed if the validation fails
  61                 /// </summary>
  62                 /// <value>The error message.</value>
  63                 string ErrorMessage { get; set; }
  64
  65                 /// <summary>
  66                 /// Gets or sets the a friendly name for the target property
  67                 /// </summary>
  68                 /// <value>The name.</value>
  69                 string FriendlyName { get; set; }
  70
  71                 /// <summary>
  72                 /// Implementors should perform the actual validation upon
  73                 /// the property value
  74                 /// </summary>
  75                 /// <param name="instance"></param>
  76                 /// <returns><c>true</c> if the field is OK</returns>
  77                 bool IsValid(object instance);
  78
  79                 /// <summary>
  80                 /// Implementors should perform the actual validation upon
  81                 /// the property value
  82                 /// </summary>
  83                 /// <param name="instance"></param>
  84                 /// <param name="fieldValue"></param>
  85                 /// <returns><c>true</c> if the field is OK</returns>
  86                 bool IsValid(object instance, object fieldValue);
  87
  88                 /// <summary>
  89                 /// Gets a value indicating whether this validator supports browser validation.
  90                 /// </summary>
  91                 /// <value>
  92                 /// <see langword="true"/> if browser validation is supported; otherwise, <see langword="false"/>.
  93                 /// </value>
  94                 bool SupportsBrowserValidation { get; }
  95
  96                 /// <summary>
  97                 /// Applies the browser validation by setting up one or
  98                 /// more input rules on <see cref="IBrowserValidationGenerator"/>.
  99                 /// </summary>
 100                 /// <param name="config">The config.</param>
 101                 /// <param name="inputType">Type of the input.</param>
 102                 /// <param name="generator">The generator.</param>
 103                 /// <param name="attributes">The attributes.</param>
 104                 /// <param name="target">The target.</param>
 105                 void ApplyBrowserValidation(BrowserValidationConfiguration config, InputElementType inputType,
 106                                             IBrowserValidationGenerator generator, IDictionary attributes, string target);
 107
 108                 /// <summary>
 109                 /// Gets the property name. The <see cref="FriendlyName"/>
 110                 /// is returned if non-null, otherwise it will return the property name.
 111                 /// </summary>
 112                 string Name { get; }
 113         }
 114 }