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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Web.WebPages.Resources;
namespace System.Web.Mvc
{
public static class UnobtrusiveValidationAttributesGenerator
{
public static void GetValidationAttributes(IEnumerable<ModelClientValidationRule> clientRules, IDictionary<string, object> results)
{
if (clientRules == null)
{
throw new ArgumentNullException("clientRules");
}
if (results == null)
{
throw new ArgumentNullException("results");
}
bool renderedRules = false;
foreach (ModelClientValidationRule rule in clientRules)
{
renderedRules = true;
string ruleName = "data-val-" + rule.ValidationType;
ValidateUnobtrusiveValidationRule(rule, results, ruleName);
results.Add(ruleName, HttpUtility.HtmlEncode(rule.ErrorMessage ?? String.Empty));
ruleName += "-";
foreach (var kvp in rule.ValidationParameters)
{
results.Add(ruleName + kvp.Key, HttpUtility.HtmlEncode(kvp.Value ?? String.Empty));
}
}
if (renderedRules)
{
results.Add("data-val", "true");
}
}
private static void ValidateUnobtrusiveValidationRule(ModelClientValidationRule rule, IDictionary<string, object> resultsDictionary, string dictionaryKey)
{
if (String.IsNullOrWhiteSpace(rule.ValidationType))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
WebPageResources.UnobtrusiveJavascript_ValidationTypeCannotBeEmpty,
rule.GetType().FullName));
}
if (resultsDictionary.ContainsKey(dictionaryKey))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
WebPageResources.UnobtrusiveJavascript_ValidationTypeMustBeUnique,
rule.ValidationType));
}
if (rule.ValidationType.Any(c => !Char.IsLower(c)))
{
throw new InvalidOperationException(
String.Format(CultureInfo.CurrentCulture, WebPageResources.UnobtrusiveJavascript_ValidationTypeMustBeLegal,
rule.ValidationType,
rule.GetType().FullName));
}
foreach (var key in rule.ValidationParameters.Keys)
{
if (String.IsNullOrWhiteSpace(key))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
WebPageResources.UnobtrusiveJavascript_ValidationParameterCannotBeEmpty,
rule.GetType().FullName));
}
if (!Char.IsLower(key.First()) || key.Any(c => !Char.IsLower(c) && !Char.IsDigit(c)))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture,
WebPageResources.UnobtrusiveJavascript_ValidationParameterMustBeLegal,
key,
rule.GetType().FullName));
}
}
}
}
}
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