protected RouteValueDictionary GetAttributes()
{
bool isIml = OnInit != null ||
OnChange != null ||
OnEvent != null;
if (isIml)
{
attributes.Merge(new IncodingMetaLanguageDsl(JqueryBind.InitIncoding)
.OnSuccess(dsl =>
{
OnInit.Do(action => action(dsl));
OnEvent.Do(action => action(dsl));
})
.When(JqueryBind.Change)
.OnSuccess(dsl =>
{
OnChange.Do(action => action(dsl));
OnEvent.Do(action => action(dsl));
})
.AsHtmlAttributes());
}
return(attributes);
}
public override MvcHtmlString ToHtmlString()
{
var optionals = Optional.Recovery(new KeyValueVm[0]);
bool isAjax = !string.IsNullOrWhiteSpace(Url);
bool isIml = OnInit != null ||
OnChange != null ||
this.OnEvent != null;
if (isAjax || isIml)
{
var meta = isAjax ? this.htmlHelper.When(InitBind).Do().Ajax(options =>
{
options.Url = Url;
options.Type = HttpVerbs.Get;
if (Cache.HasValue)
{
options.Cache = Cache.Value;
}
}) : this.htmlHelper.When(InitBind).Do().Direct();
this.attributes.Merge(meta.OnSuccess(dsl =>
{
if (isAjax)
{
dsl.Self().Core().Insert.WithTemplate(Template).Html();
foreach (var vm in optionals)
{
var option = new TagBuilder(HtmlTag.Option.ToStringLower());
option.SetInnerText(vm.Text);
option.MergeAttribute(HtmlAttribute.Value.ToStringLower(), vm.Value);
dsl.Self().Core().JQuery.Manipulation.Prepend(new MvcHtmlString(option.ToString()).ToHtmlString());
}
var selected = ModelMetadata.FromLambdaExpression(this.property, this.htmlHelper.ViewData).Model;
if (selected != null)
{
dsl.Self().Core().JQuery.Attributes.Val(selected);
}
}
OnInit.Do(action => action(dsl));
OnEvent.Do(action => action(dsl));
})
.When(JqueryBind.Change)
.Do()
.Direct()
.OnSuccess(dsl =>
{
OnChange.Do(action => action(dsl));
OnEvent.Do(action => action(dsl));
})
.AsHtmlAttributes());
}
return(!isAjax && optionals.Any()
? this.htmlHelper.DropDownListFor(this.property, Data, optionals.FirstOrDefault().Text, this.attributes)
: this.htmlHelper.DropDownListFor(this.property, Data, this.attributes));
}
public override void WriteTo(TextWriter writer, HtmlEncoder encoder)
{
string currentUrl = Data;
bool isAjax = !string.IsNullOrWhiteSpace(currentUrl);
var meta = isAjax ? this.htmlHelper.When(InitBind).Ajax(currentUrl)
: this.htmlHelper.When(InitBind);
attributes = meta.OnSuccess(dsl =>
{
if (isAjax)
{
dsl.Self().JQuery.Dom.Empty();
foreach (var vm in (List <KeyValueVm>)Data.Optional)
{
var option = new TagBuilder(HtmlTag.Option.ToStringLower());
option.InnerHtml.Append(vm.Text);
option.MergeAttribute(HtmlAttribute.Value.ToStringLower(), vm.Value);
dsl.Self().JQuery.Dom.Use(option.ToHtmlString()).Prepend();
}
dsl.Self().Insert.WithTemplate(Template).Append();
}
var selected = ExpressionMetadataProvider.FromLambdaExpression(property, htmlHelper.ViewData, htmlHelper.MetadataProvider).Model;
if (selected != null)
{
dsl.Self().JQuery.Attr.Val(selected);
}
OnInit.Do(action => action(dsl));
OnEvent.Do(action => action(dsl));
})
.When(JqueryBind.Change)
.OnSuccess(dsl =>
{
OnChange.Do(action => action(dsl));
OnEvent.Do(action => action(dsl));
})
.AsHtmlAttributes(this.attributes);
var tag = this.htmlHelper.DropDownListFor(this.property, isAjax ? new SelectList(new string[] { }) : (SelectList)Data, null, this.attributes);
tag.WriteTo(writer, encoder);
}