/// <summary>
/// Execute an 'im mem' preview request of the provided page and content. The execution depends on the hosting environment.
/// Then running in pipeline mode the current HttpContext is
/// </summary>
/// <param name="selectedPage">Page to render. Functionality reading the rendered page ID will get the ID from this object.</param>
/// <param name="contents">Content to render on the page</param>
/// <param name="renderingReason">The rendering reason</param>
/// <returns>The page html as a string when running in classic mode. In Pipeline mode the content is written directly to the HttpContext and an empty string is returned.</returns>
public static string RenderPreview(IPage selectedPage, IList <IPagePlaceholderContent> contents, RenderingReason renderingReason)
{
HttpContext ctx = HttpContext.Current;
string key = Guid.NewGuid().ToString();
string query = "previewKey=" + key;
ctx.Cache.Add(key + "_SelectedPage", selectedPage, null, Cache.NoAbsoluteExpiration, PreviewExpirationTimeSpan, CacheItemPriority.NotRemovable, null);
ctx.Cache.Add(key + "_SelectedContents", contents, null, Cache.NoAbsoluteExpiration, PreviewExpirationTimeSpan, CacheItemPriority.NotRemovable, null);
ctx.Cache.Add(key + "_RenderingReason", renderingReason, null, Cache.NoAbsoluteExpiration, PreviewExpirationTimeSpan, CacheItemPriority.NotRemovable, null);
if (HttpRuntime.UsingIntegratedPipeline)
{
// The header trick here is to work around (what seems to be) a bug in .net 4.5, where preserveForm=false is ignored
// asp.net 4.5 request validation will see the 'page edit http post' data and start bitching. It really should not.
var headers = new System.Collections.Specialized.NameValueCollection();
headers.Add("Content-Length", "0");
string cookieHeader = ctx.Request.Headers["Cookie"];
if (!string.IsNullOrEmpty(cookieHeader))
{
headers.Add("Cookie", cookieHeader);
}
ctx.Server.TransferRequest("~/Renderers/Page.aspx?" + query, false, "GET", headers);
}
else
{
var sb = new StringBuilder();
var writer = new StringWriter(sb);
var wr = new PreviewWorkerRequest(query, ctx, writer);
AllowChildRequestSessionAccess(ctx);
HttpRuntime.ProcessRequest(wr);
// Preview <iframe /> has source "~/Composite/content/flow/FlowUi.aspx" and page is rendered from "~/Renderers/Page.aspx"
// The following line fixes style references processed by ASP.NET-s Control.ResolveClientUrl()
sb = sb.Replace("href=\"../", "href=\"../../../");
return(sb.ToString());
}
return(String.Empty);
}
/// <summary>
/// Execute an 'im mem' preview request of the provided page and content. The execution depends on the hosting environment.
/// Then running in pipeline mode the current HttpContext is
/// </summary>
/// <param name="selectedPage">Page to render. Functionality reading the rendered page ID will get the ID from this object.</param>
/// <param name="contents">Content to render on the page</param>
/// <param name="renderingReason">The rendering reason</param>
/// <returns>The page html as a string when running in classic mode. In Pipeline mode the content is written directly to the HttpContext and an empty string is returned.</returns>
public static string RenderPreview(IPage selectedPage, IList<IPagePlaceholderContent> contents, RenderingReason renderingReason)
{
HttpContext ctx = HttpContext.Current;
string key = Guid.NewGuid().ToString();
string query = "previewKey=" + key;
ctx.Cache.Add(key + "_SelectedPage", selectedPage, null, Cache.NoAbsoluteExpiration, PreviewExpirationTimeSpan, CacheItemPriority.NotRemovable, null);
ctx.Cache.Add(key + "_SelectedContents", contents, null, Cache.NoAbsoluteExpiration, PreviewExpirationTimeSpan, CacheItemPriority.NotRemovable, null);
ctx.Cache.Add(key + "_RenderingReason", renderingReason, null, Cache.NoAbsoluteExpiration, PreviewExpirationTimeSpan, CacheItemPriority.NotRemovable, null);
if (HttpRuntime.UsingIntegratedPipeline)
{
// The header trick here is to work around (what seems to be) a bug in .net 4.5, where preserveForm=false is ignored
// asp.net 4.5 request validation will see the 'page edit http post' data and start bitching. It really should not.
var headers = new System.Collections.Specialized.NameValueCollection();
headers.Add("Content-Length", "0");
string cookieHeader = ctx.Request.Headers["Cookie"];
if (!string.IsNullOrEmpty(cookieHeader))
{
headers.Add("Cookie", cookieHeader);
}
ctx.Server.TransferRequest("~/Renderers/Page.aspx?" + query, false, "GET", headers);
}
else
{
var sb = new StringBuilder();
var writer = new StringWriter(sb);
var wr = new PreviewWorkerRequest(query, ctx, writer);
AllowChildRequestSessionAccess(ctx);
HttpRuntime.ProcessRequest(wr);
// Preview <iframe /> has source "~/Composite/content/flow/FlowUi.aspx" and page is rendered from "~/Renderers/Page.aspx"
// The following line fixes style references processed by ASP.NET-s Control.ResolveClientUrl()
sb = sb.Replace("href=\"../", "href=\"../../../");
return sb.ToString();
}
return String.Empty;
}
