protected string PreparePrefetch(string content)
{
string output = null;
if (!(String.IsNullOrEmpty(Request.Url.Query)) || (Request.Headers["X-Cot-Manifest-Request"] == "true"))
{
return(output);
}
JToken token = ApplicationServices.TryGetJsonProperty(ApplicationServices.Current.DefaultSettings, "ui.history.dataView");
bool supportGridPrefetch = ((token == null) || !(Regex.IsMatch(((string)(token)), "\\b(search|sort|group|filter)\\b")));
List <string> prefetches = new List <string>();
bool prefetch = false;
List <Tuple <string, AttributeDictionary> > dataViews = new List <Tuple <string, AttributeDictionary> >();
foreach (Match m in Regex.Matches(content, "<div\\s+(id=\"(?\'Id\'\\w+)\")\\s+(?\'Props\'data-controller.*?)>"))
{
dataViews.Add(new Tuple <string, AttributeDictionary>(m.Groups["Id"].Value, new AttributeDictionary(m.Groups["Props"].Value)));
}
if (dataViews.Count == 1)
{
prefetch = true;
}
else
{
// LEGACY MASTER DETAIL PAGE SUPPORT
//
//
// 1. convert text of containers into single container with single dataview referring to virtual dashboard controller
//
// <div data-flow="row">
// <div id="view1" data-controller="Dashboards" data-view="form1" data-show-action-buttons="none"></div>
//
// </div>
//
// 2. produce response for this controller.
// a. standalone data views become data view fields of the virtual controller
// b. the layout of the page is optionally converted into form1 layout of the virtual controller
// c. render json response of virtual controller with layout in it
//
}
if (prefetch)
{
for (int i = 0; (i < dataViews.Count); i++)
{
Tuple <string, AttributeDictionary> dataView = dataViews[i];
string dataViewId = dataView.Item1;
AttributeDictionary attrs = dataView.Item2;
foreach (string p in UnsupportedDataViewProperties)
{
if (attrs.ContainsKey(p))
{
return(output);
}
}
string controllerName = attrs["data-controller"];
string viewId = null;
string tags = null;
attrs.TryGetValue("data-tags", out tags);
ControllerConfiguration c = Controller.CreateConfigurationInstance(GetType(), controllerName);
if (!(attrs.TryGetValue("data-view", out viewId)))
{
viewId = ((string)(c.Evaluate("string(/c:dataController/c:views/c:view[1]/@id)")));
}
XPathNavigator viewNav = c.SelectSingleNode("/c:dataController/c:views/c:view[@id=\'{0}\']", viewId);
if (!(Context.User.Identity.IsAuthenticated) && !((viewNav.GetAttribute("access", String.Empty) == "Public")))
{
return(output);
}
string roles = null;
if (attrs.TryGetValue("data-roles", out roles) && !(new ControllerUtilities().UserIsInRole(roles.Split(','))))
{
return(output);
}
tags = (tags
+ (" " + viewNav.GetAttribute("tags", String.Empty)));
bool isForm = (viewNav.GetAttribute("type", String.Empty) == "Form");
if (isForm)
{
_summaryDisabled = true;
}
if ((String.IsNullOrEmpty(tags) || !(Regex.IsMatch(tags, "\\bprefetch-data-none\\b"))) && (supportGridPrefetch || isForm))
{
PageRequest request = new PageRequest(-1, 30, null, null);
request.Controller = controllerName;
request.View = viewId;
request.Tag = tags;
request.ContextKey = dataViewId;
request.SupportsCaching = true;
if (attrs.ContainsKey("data-search-on-start"))
{
request.DoesNotRequireData = true;
}
ViewPage response = ControllerFactory.CreateDataController().GetPage(request.Controller, request.View, request);
string result = String.Format("{{ \"d\": {0} }}", ApplicationServices.CompressViewPageJsonOutput(JsonConvert.SerializeObject(response)));
prefetches.Add(String.Format("<script type=\"application/json\" id=\"_{0}_prefetch\">{1}</script>", dataViewId, Regex.Replace(result, "(<(/?\\s*script)(\\s|>))", "]_[$2$3]^[", RegexOptions.IgnoreCase)));
if (isForm)
{
foreach (DataField field in response.Fields)
{
if (String.IsNullOrEmpty(field.DataViewFilterSource) && (field.Type == "DataView"))
{
AttributeDictionary fieldAttr = new AttributeDictionary(String.Empty);
fieldAttr.Add("data-controller", field.DataViewController);
fieldAttr.Add("data-view", field.DataViewId);
fieldAttr.Add("data-tags", field.Tag);
if (field.DataViewSearchOnStart)
{
fieldAttr.Add("data-search-on-start", "true");
}
dataViews.Add(new Tuple <string, AttributeDictionary>(String.Format("{0}_{1}", dataViewId, field.Name), fieldAttr));
}
}
}
}
}
}
if (prefetches.Count > 0)
{
output = string.Join(String.Empty, prefetches);
}
return(output);
}