private static String CreateDatalistValues(HtmlHelper html, MvcDatalist datalist, String name, Object value)
{
IDictionary <String, Object> attributes = new Dictionary <String, Object>();
attributes["class"] = "datalist-value";
TagBuilder container = new TagBuilder("div");
container.AddCssClass("datalist-values");
container.Attributes["data-for"] = name;
if (datalist.Multi)
{
IEnumerable <Object> values = (value as IEnumerable)?.Cast <Object>();
if (values == null)
{
return(container.ToString());
}
StringBuilder inputs = new StringBuilder();
foreach (Object val in values)
{
inputs.Append(html.Hidden(name, val, attributes));
}
container.InnerHtml = inputs.ToString();
}
else
{
container.InnerHtml = html.Hidden(name, value, attributes).ToString();
}
return(container.ToString());
}
private static TagBuilder CreateDatalist(MvcDatalist datalist, String name, Object htmlAttributes)
{
IDictionary <String, Object> attributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
attributes["data-filters"] = String.Join(",", datalist.AdditionalFilters);
attributes["data-readonly"] = datalist.ReadOnly ? "true" : "false";
attributes["data-multi"] = datalist.Multi ? "true" : "false";
attributes["data-order"] = datalist.Filter.Order.ToString();
attributes["data-page"] = datalist.Filter.Page.ToString();
attributes["data-rows"] = datalist.Filter.Rows.ToString();
attributes["data-search"] = datalist.Filter.Search;
attributes["data-sort"] = datalist.Filter.Sort;
attributes["data-dialog"] = datalist.Dialog;
attributes["data-title"] = datalist.Title;
attributes["data-url"] = datalist.Url;
attributes["data-for"] = name;
TagBuilder group = new TagBuilder("div");
group.MergeAttributes(attributes);
group.AddCssClass("datalist");
if (datalist.ReadOnly)
{
group.AddCssClass("datalist-readonly");
}
return(group);
}
public static IHtmlString Datalist <TModel>(this HtmlHelper <TModel> html,
String name, MvcDatalist model, Object value = null, Object htmlAttributes = null)
{
TagBuilder datalist = CreateDatalist(model, name, htmlAttributes);
datalist.InnerHtml = CreateDatalistValues(html, model, name, value);
datalist.InnerHtml += CreateDatalistControl(model, name);
datalist.InnerHtml += CreateDatalistBrowse(name);
return(new MvcHtmlString(datalist.ToString()));
}
public static IHtmlString AutoComplete <TModel>(this HtmlHelper <TModel> html,
String name, MvcDatalist model, Object value = null, Object htmlAttributes = null)
{
TagBuilder datalist = CreateDatalist(model, name, htmlAttributes);
datalist.AddCssClass("datalist-browseless");
datalist.InnerHtml = CreateDatalistValues(html, model, name, value);
datalist.InnerHtml += CreateDatalistControl(model, name);
return(new MvcHtmlString(datalist.ToString()));
}
private static String CreateDatalistControl(HtmlHelper html, MvcDatalist datalist, String name)
{
Dictionary <String, Object> attributes = new Dictionary <String, Object>();
TagBuilder search = new TagBuilder("input");
TagBuilder control = new TagBuilder("div");
TagBuilder loader = new TagBuilder("div");
TagBuilder error = new TagBuilder("div");
if (datalist.Name != null)
{
attributes["id"] = ExpressionHelper.GetExpressionText(datalist.Name);
}
if (datalist.Placeholder != null)
{
attributes["placeholder"] = datalist.Placeholder;
}
if (datalist.Name != null)
{
attributes["name"] = datalist.Name;
}
if (datalist.ReadOnly)
{
attributes["readonly"] = "readonly";
}
attributes["class"] = "datalist-input";
attributes["autocomplete"] = "off";
if (datalist.ReadOnly)
{
search.Attributes["readonly"] = "readonly";
}
loader.AddCssClass("datalist-control-loader");
error.AddCssClass("datalist-control-error");
control.AddCssClass("datalist-control");
control.Attributes["data-for"] = name;
search.MergeAttributes(attributes);
error.InnerHtml = "!";
if (datalist.Name != null)
{
control.InnerHtml = html.TextBox(datalist.Name, null, attributes).ToString();
}
else
{
control.InnerHtml = search.ToString(TagRenderMode.SelfClosing);
}
control.InnerHtml += loader.ToString();
control.InnerHtml += error.ToString();
return(control.ToString());
}
private static String CreateDatalistControl(MvcDatalist datalist, String name)
{
TagBuilder search = new TagBuilder("input");
TagBuilder control = new TagBuilder("div");
TagBuilder loader = new TagBuilder("div");
if (datalist.ReadOnly)
{
search.Attributes["readonly"] = "readonly";
}
loader.AddCssClass("datalist-control-loader");
control.AddCssClass("datalist-control");
control.Attributes["data-for"] = name;
search.AddCssClass("datalist-input");
control.InnerHtml = search.ToString(TagRenderMode.SelfClosing);
control.InnerHtml += loader.ToString();
return(control.ToString());
}
private static String CreateDatalistValues <TModel, TProperty>(HtmlHelper <TModel> html, MvcDatalist datalist, Expression <Func <TModel, TProperty> > expression)
{
Object value = ModelMetadata.FromLambdaExpression(expression, html.ViewData).Model;
String name = ExpressionHelper.GetExpressionText(expression);
if (datalist.Multi)
{
return(CreateDatalistValues(html, datalist, name, value));
}
IDictionary <String, Object> attributes = new Dictionary <String, Object>();
attributes["class"] = "datalist-value";
TagBuilder container = new TagBuilder("div");
container.AddCssClass("datalist-values");
container.Attributes["data-for"] = name;
container.InnerHtml = html.HiddenFor(expression, attributes).ToString();
return(container.ToString());
}
public static IHtmlString DatalistFor <TModel, TProperty>(this HtmlHelper <TModel> html,
Expression <Func <TModel, TProperty> > expression, MvcDatalist model, Object htmlAttributes = null)
{
String name = ExpressionHelper.GetExpressionText(expression);
TagBuilder datalist = CreateDatalist(model, name, htmlAttributes);
datalist.InnerHtml = CreateDatalistValues(html, model, expression);
datalist.InnerHtml += CreateDatalistControl(model, name);
datalist.InnerHtml += CreateDatalistBrowse(name);
return(new MvcHtmlString(datalist.ToString()));
}
