HtmlFragmentResponse.cs :  » Build-Systems » CruiseControl.NET » ThoughtWorks » CruiseControl » WebDashboard » MVC » C# / CSharp Open Source

using System.Web;
using ThoughtWorks.CruiseControl.WebDashboard.IO;

namespace ThoughtWorks.CruiseControl.WebDashboard.MVC{
  public class HtmlFragmentResponse : IResponse
  {
    private readonly string htmlFragment;
      private ConditionalGetFingerprint serverFingerprint;

      public HtmlFragmentResponse(string htmlFragment)
    {
      this.htmlFragment = htmlFragment;
    }

    public string ResponseFragment
    {
      get { return htmlFragment; }
    }

    public void Process(HttpResponse response)
    {
      if (IsClientSideCacheable())
      {
        AddHeadersToEnable403Cacheing(response);
      }
            response.ContentType = MimeType.Html.ContentType;
            response.Write(htmlFragment);
    }

    private void AddHeadersToEnable403Cacheing(HttpResponse response)
    {
            var browser = HttpContext.Current.Request.Browser;
            if (browser.IsBrowser("IE") && (browser.MajorVersion <= 6))
            {
                // Turn off caching due to issues with IE 6.0
                response.Cache.SetCacheability(HttpCacheability.NoCache);
                response.Cache.SetNoStore();
            }
            else
            {
                response.AppendHeader("Last-Modified", serverFingerprint.LastModifiedTime.ToString("r"));
                response.AppendHeader("ETag", serverFingerprint.ETag);
                response.AppendHeader("Cache-Control", "no-store");
            }
    }

    private bool IsClientSideCacheable()
    {
      return !(ConditionalGetFingerprint.NOT_AVAILABLE.Equals(ServerFingerprint));
    }

    public ConditionalGetFingerprint ServerFingerprint
      {
            get { return serverFingerprint; }
          set { serverFingerprint = value; }
      }
  }
}