117 lines
3.7 KiB
C#
117 lines
3.7 KiB
C#
namespace System.Web.Mvc {
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.Web.Mvc.Resources;
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using System.Web.WebPages;
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public abstract class WebViewPage : WebPageBase, IViewDataContainer, IViewStartPageChild {
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private ViewDataDictionary _viewData;
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private DynamicViewDataDictionary _dynamicViewData;
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private HttpContextBase _context;
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public AjaxHelper<object> Ajax {
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get;
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set;
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}
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public override HttpContextBase Context {
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// REVIEW why are we forced to override this?
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get {
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return _context ?? ViewContext.HttpContext;
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}
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set {
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_context = value;
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}
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}
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public HtmlHelper<object> Html {
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get;
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set;
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}
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public object Model {
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get {
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return ViewData.Model;
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}
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}
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internal string OverridenLayoutPath { get; set; }
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public TempDataDictionary TempData {
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get {
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return ViewContext.TempData;
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}
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}
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public UrlHelper Url {
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get;
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set;
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}
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public dynamic ViewBag {
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get {
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if (_dynamicViewData == null) {
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_dynamicViewData = new DynamicViewDataDictionary(() => ViewData);
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}
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return _dynamicViewData;
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}
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}
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public ViewContext ViewContext {
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get;
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set;
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}
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[SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly", Justification = "This is the mechanism by which the ViewPage gets its ViewDataDictionary object.")]
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public ViewDataDictionary ViewData {
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get {
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if (_viewData == null) {
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SetViewData(new ViewDataDictionary());
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}
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return _viewData;
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}
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set {
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SetViewData(value);
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}
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}
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protected override void ConfigurePage(WebPageBase parentPage) {
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var baseViewPage = parentPage as WebViewPage;
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if (baseViewPage == null) {
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// TODO : review if this check is even necessary.
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// When this method is called by the framework parentPage should already be an instance of WebViewPage
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// Need to review what happens if this method gets called in Plan9 pointing at an MVC view
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throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture, MvcResources.CshtmlView_WrongViewBase, parentPage.VirtualPath));
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}
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// Set ViewContext and ViewData here so that the layout page inherits ViewData from the main page
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ViewContext = baseViewPage.ViewContext;
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ViewData = baseViewPage.ViewData;
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InitHelpers();
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}
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public override void ExecutePageHierarchy() {
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// Change the Writer so that things like Html.BeginForm work correctly
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ViewContext.Writer = Output;
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base.ExecutePageHierarchy();
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// Overwrite LayoutPage so that returning a view with a custom master page works.
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if (!String.IsNullOrEmpty(OverridenLayoutPath)) {
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Layout = OverridenLayoutPath;
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}
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}
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public virtual void InitHelpers() {
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Ajax = new AjaxHelper<object>(ViewContext, this);
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Html = new HtmlHelper<object>(ViewContext, this);
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Url = new UrlHelper(ViewContext.RequestContext);
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}
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protected virtual void SetViewData(ViewDataDictionary viewData) {
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_viewData = viewData;
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}
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}
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}
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