protected string RenderNodeBlock(NodeBlock block, HtmlHelper html)
{
//check if the node exists
if (block.Content == null) return null;
//initialise WebBlocksAPI
WebBlocksAPI blockInstanceAPI = new WebBlocksAPI();
blockInstanceAPI.CssClasses = new List<string>();
blockInstanceAPI.BlockElement = "";
blockInstanceAPI.BlockAttributes = new Dictionary<string, string>();
IRenderingEngine renderingEngine = ResolveRenderingEngine(block);
//if rendering engine is null then the document doesn't exist anymore
if (renderingEngine == null || block.Content == null) return "";
//set the block model for the view to access
WebBlocksUtility.CurrentBlockContent = block.Content;
string blockIdAttribute = WebBlocksUtility.IsInBuilder ? string.Format(" wbid='{0}'", block.Id) : "";
string blockTemplateAttribute = WebBlocksUtility.IsInBuilder ?
string.Format(" templateblock='{0}'", block.IsTemplateBlock.ToString().ToLower()) : "";
string blockDeletedAttribute = WebBlocksUtility.IsInBuilder && block.IsDeleted ? " deletedBlock='deleted' style='display:none;visibilty:hidden;'" : "";
string renderedContent = "";
//render
try
{
renderedContent = renderingEngine.Render(html);
}
catch(Exception ex)
{
renderedContent = HttpUtility.HtmlEncode(ex.ToString());
}
List<string> CssClasses = blockInstanceAPI.CssClasses;
string blockElement = blockInstanceAPI.BlockElement ?? "div";
blockElement = blockElement != "" ? blockElement : "div";
Dictionary<string, string> blockAttributeDictionary = blockInstanceAPI.BlockAttributes;
string blockAttributes = string.Join(" ", blockAttributeDictionary.Keys.Select(c => c + "='" + blockAttributeDictionary[c] + "'"));
string blockClass = string.Format("{0}{1}{0}{2}{3}{4}",
block.Class.Length > 0 ? " " : "",
block.Class,
WebBlocksUtility.CurrentBlockContent.GetPropertyValue("cssClasses"),
CssClasses.Count() > 0 ? " " : "",
String.Join(" ", CssClasses));
blockClass = WebBlocksUtility.IsInBuilder ? "block " + blockClass : blockClass;
renderedContent = string.Format("<{0} class='{1}'{2}{3}{4}{5}>{6}</{0}>",
blockElement, blockClass, blockIdAttribute, blockTemplateAttribute, blockDeletedAttribute, blockAttributes, renderedContent);
return renderedContent;
}
protected IRenderingEngine ResolveRenderingEngine(NodeBlock block)
{
try
{
var blockDoc = new Document(block.Id);
//resolve with partial view
IRenderingEngine engine = new PartialViewRenderingEngine
{
Macro = new MacroModel(new Macro { ScriptingFile = blockDoc.ContentType.Alias })
};
return engine;
}
catch (Exception)
{
return null;
}
}