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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Diagnostics.CodeAnalysis;
using System.IO;
namespace System.Web.Mvc
{
public abstract class ViewResultBase : ActionResult
{
private DynamicViewDataDictionary _dynamicViewData;
private TempDataDictionary _tempData;
private ViewDataDictionary _viewData;
private ViewEngineCollection _viewEngineCollection;
private string _viewName;
public object Model
{
get { return ViewData.Model; }
}
[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly", Justification = "This entire type is meant to be mutable.")]
public TempDataDictionary TempData
{
get
{
if (_tempData == null)
{
_tempData = new TempDataDictionary();
}
return _tempData;
}
set { _tempData = value; }
}
public IView View { get; set; }
public dynamic ViewBag
{
get
{
if (_dynamicViewData == null)
{
_dynamicViewData = new DynamicViewDataDictionary(() => ViewData);
}
return _dynamicViewData;
}
}
[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly", Justification = "This entire type is meant to be mutable.")]
public ViewDataDictionary ViewData
{
get
{
if (_viewData == null)
{
_viewData = new ViewDataDictionary();
}
return _viewData;
}
set { _viewData = value; }
}
[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly", Justification = "This entire type is meant to be mutable.")]
public ViewEngineCollection ViewEngineCollection
{
get { return _viewEngineCollection ?? ViewEngines.Engines; }
set { _viewEngineCollection = value; }
}
public string ViewName
{
get { return _viewName ?? String.Empty; }
set { _viewName = value; }
}
public override void ExecuteResult(ControllerContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (String.IsNullOrEmpty(ViewName))
{
ViewName = context.RouteData.GetRequiredString("action");
}
ViewEngineResult result = null;
if (View == null)
{
result = FindView(context);
View = result.View;
}
TextWriter writer = context.HttpContext.Response.Output;
ViewContext viewContext = new ViewContext(context, View, ViewData, TempData, writer);
View.Render(viewContext, writer);
if (result != null)
{
result.ViewEngine.ReleaseView(context, View);
}
}
protected abstract ViewEngineResult FindView(ControllerContext context);
}
}
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