internal static string TemplateHelper(HtmlHelper html, ModelMetadata metadata, string htmlFieldName, string templateName, DataBoundControlMode mode, object additionalViewData, ExecuteTemplateDelegate executeTemplate)
{
// TODO: Convert Editor into Display if model.IsReadOnly is true? Need to be careful about this because
// the Model property on the ViewPage/ViewUserControl is get-only, so the type descriptor automatically
// decorates it with a [ReadOnly] attribute...
if (metadata.ConvertEmptyStringToNull && String.Empty.Equals(metadata.Model))
{
metadata.Model = null;
}
object formattedModelValue = metadata.Model;
if (metadata.Model == null && mode == DataBoundControlMode.ReadOnly)
{
formattedModelValue = metadata.NullDisplayText;
}
string formatString = mode == DataBoundControlMode.ReadOnly ? metadata.DisplayFormatString : metadata.EditFormatString;
if (metadata.Model != null && !String.IsNullOrEmpty(formatString))
{
formattedModelValue = String.Format(CultureInfo.CurrentCulture, formatString, metadata.Model);
}
// Normally this shouldn't happen, unless someone writes their own custom Object templates which
// don't check to make sure that the object hasn't already been displayed
object visitedObjectsKey = metadata.Model ?? metadata.RealModelType;
if (html.ViewDataContainer.ViewData.TemplateInfo.VisitedObjects.Contains(visitedObjectsKey)) // DDB #224750
{
return(String.Empty);
}
ViewDataDictionary viewData = new ViewDataDictionary(html.ViewDataContainer.ViewData)
{
Model = metadata.Model,
ModelMetadata = metadata,
TemplateInfo = new TemplateInfo {
FormattedModelValue = formattedModelValue,
HtmlFieldPrefix = html.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(htmlFieldName),
VisitedObjects = new HashSet <object>(html.ViewContext.ViewData.TemplateInfo.VisitedObjects), // DDB #224750
}
};
if (additionalViewData != null)
{
foreach (KeyValuePair <string, object> kvp in new RouteValueDictionary(additionalViewData))
{
viewData[kvp.Key] = kvp.Value;
}
}
viewData.TemplateInfo.VisitedObjects.Add(visitedObjectsKey); // DDB #224750
return(executeTemplate(html, viewData, templateName, mode, GetViewNames));
}
internal static string TemplateHelper(HtmlHelper html, ModelMetadata metadata, string htmlFieldName, string templateName, DataBoundControlMode mode, object additionalViewData, ExecuteTemplateDelegate executeTemplate)
{
if (metadata.ConvertEmptyStringToNull && string.Empty.Equals(metadata.Model))
{
metadata.Model = null;
}
var obj1 = metadata.Model;
if (metadata.Model == null && mode == DataBoundControlMode.ReadOnly)
{
obj1 = metadata.NullDisplayText;
}
var format = mode == DataBoundControlMode.ReadOnly ? metadata.DisplayFormatString : metadata.EditFormatString;
if (metadata.Model != null && !string.IsNullOrEmpty(format))
{
obj1 = string.Format(CultureInfo.CurrentCulture, format, new object[1]
{
metadata.Model
});
}
var obj2 = metadata.Model ?? metadata.ModelType;
if (html.ViewDataContainer.ViewData.TemplateInfo.GetPrivatePropertyValue <HashSet <object> >("VisitedObjects").Contains(obj2))
{
return(string.Empty);
}
var viewData = new ViewDataDictionary(html.ViewDataContainer.ViewData)
{
Model = metadata.Model,
ModelMetadata = metadata,
TemplateInfo = new TemplateInfo()
{
FormattedModelValue = obj1,
HtmlFieldPrefix = html.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(htmlFieldName)
}
};
viewData.TemplateInfo.SetPrivatePropertyValue <HashSet <object> >("VisitedObjects", new HashSet <object>(html.ViewContext.ViewData.TemplateInfo.GetPrivatePropertyValue <HashSet <object> >("VisitedObjects")));
if (additionalViewData != null)
{
foreach (var keyValuePair in new RouteValueDictionary(additionalViewData))
{
viewData[keyValuePair.Key] = keyValuePair.Value;
}
}
viewData.TemplateInfo.GetPrivatePropertyValue <HashSet <object> >("VisitedObjects").Add(obj2);
return(executeTemplate(html, viewData, templateName, mode, GetViewNames, GetDefaultActions));
}
