public static MvcHtmlString JsTreeFor <TModel>(this HtmlHelper <TModel> html, Expression <Func <TModel, JsTree> > expression)
{
String name = ExpressionHelper.GetExpressionText(expression) + ".SelectedIds";
JsTree model = ModelMetadata.FromLambdaExpression(expression, html.ViewData).Model as JsTree;
return(new MvcHtmlString(HiddenIdsFor(name, model) + JsTreeFor(name, model)));
}
private static String JsTreeFor(String name, JsTree model)
{
TagBuilder tree = new TagBuilder("div");
tree.AddCssClass("js-tree-view");
tree.Attributes["for"] = name;
Add(tree, model.Nodes);
return(tree.ToString());
}
private static String HiddenIdsFor(String name, JsTree model)
{
StringBuilder inputs = new StringBuilder();
TagBuilder input = new TagBuilder("input");
input.Attributes["type"] = "hidden";
input.Attributes["name"] = name;
foreach (Int32 id in model.SelectedIds)
{
input.Attributes["value"] = id.ToString();
inputs.Append(input.ToString(TagRenderMode.SelfClosing));
}
TagBuilder ids = new TagBuilder("div");
ids.AddCssClass("js-tree-view-ids");
ids.InnerHtml = inputs.ToString();
return(ids.ToString());
}