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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* This software is subject to the Microsoft Public License (Ms-PL).
* A copy of the license can be found in the license.htm file included
* in this distribution.
*
* You must not remove this notice, or any other, from this software.
*
* ***************************************************************************/
namespace System.Web.Mvc {
using System;
using System.Collections;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Web.Script.Serialization;
public class ViewContext : ControllerContext {
private const string _clientValidationScript = @"<script type=""text/javascript"">
//<![CDATA[
if (!window.mvcClientValidationMetadata) {{ window.mvcClientValidationMetadata = []; }}
window.mvcClientValidationMetadata.push({0});
//]]>
</script>";
// Some values have to be stored in HttpContext.Items in order to be propagated between calls
// to RenderPartial(), RenderAction(), etc.
private static readonly object _clientValidationEnabledKey = new object();
private static readonly object _formContextKey = new object();
private static readonly object _lastFormNumKey = new object();
private Func<string> _formIdGenerator;
// parameterless constructor used for mocking
public ViewContext() {
}
[SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors",
Justification = "The virtual property setters are only to support mocking frameworks, in which case this constructor shouldn't be called anyway.")]
public ViewContext(ControllerContext controllerContext, IView view, ViewDataDictionary viewData, TempDataDictionary tempData, TextWriter writer)
: base(controllerContext) {
if (controllerContext == null) {
throw new ArgumentNullException("controllerContext");
}
if (view == null) {
throw new ArgumentNullException("view");
}
if (viewData == null) {
throw new ArgumentNullException("viewData");
}
if (tempData == null) {
throw new ArgumentNullException("tempData");
}
if (writer == null) {
throw new ArgumentNullException("writer");
}
View = view;
ViewData = viewData;
Writer = writer;
TempData = tempData;
}
public virtual bool ClientValidationEnabled {
get {
return (HttpContext.Items[_clientValidationEnabledKey] as bool?).GetValueOrDefault();
}
set {
HttpContext.Items[_clientValidationEnabledKey] = value;
}
}
public virtual FormContext FormContext {
get {
return HttpContext.Items[_formContextKey] as FormContext;
}
set {
HttpContext.Items[_formContextKey] = value;
}
}
internal Func<string> FormIdGenerator {
get {
if (_formIdGenerator == null) {
_formIdGenerator = DefaultFormIdGenerator;
}
return _formIdGenerator;
}
set {
_formIdGenerator = value;
}
}
[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly",
Justification = "The property setter is only here to support mocking this type and should not be called at runtime.")]
public virtual TempDataDictionary TempData {
get;
set;
}
public virtual IView View {
get;
set;
}
[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly",
Justification = "The property setter is only here to support mocking this type and should not be called at runtime.")]
public virtual ViewDataDictionary ViewData {
get;
set;
}
public virtual TextWriter Writer {
get;
set;
}
private string DefaultFormIdGenerator() {
int formNum = IncrementFormCount(HttpContext.Items);
return String.Format(CultureInfo.InvariantCulture, "form{0}", formNum);
}
internal FormContext GetFormContextForClientValidation() {
return (ClientValidationEnabled) ? FormContext : null;
}
private static int IncrementFormCount(IDictionary items) {
object lastFormNum = items[_lastFormNumKey];
int newFormNum = (lastFormNum != null) ? ((int)lastFormNum) + 1 : 0;
items[_lastFormNumKey] = newFormNum;
return newFormNum;
}
public void OutputClientValidation() {
FormContext formContext = GetFormContextForClientValidation();
if (formContext == null) {
return; // do nothing
}
string scriptWithCorrectNewLines = _clientValidationScript.Replace("\r\n", Environment.NewLine);
string validationJson = formContext.GetJsonValidationMetadata();
string formatted = String.Format(CultureInfo.InvariantCulture, scriptWithCorrectNewLines, validationJson);
Writer.Write(formatted);
FormContext = null;
}
}
}
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