/// <summary>
/// 呈现脚本。
/// </summary>
public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
{
var template = (await output.GetChildContentAsync()).GetContent();
if (string.IsNullOrWhiteSpace(template) || (Models == null && RemoteUrl == null))
{
output.SuppressOutput();
return;
}
var document = new TemplateDocument(template);
if (Binder == "json")
{
var id = context.AllAttributes["id"]?.Value;
if (id == null)
{
id = "jmoz_" + context.UniqueId;
output.Attributes.SetAttribute("id", id);
}
output.Content.AppendHtml("<script>");
output.Content.AppendHtml("$(function(){");
output.Content.AppendHtml($"var $this = $('#{id}');");
Render(output, document);
output.Content.AppendHtml(document.Scripts);
output.Content.AppendHtml("});");
output.Content.AppendHtml("</script>");
}
else
{
if (Models is IEnumerable instances)
{
foreach (var instance in instances)
{
output.Content.AppendHtml(document.ToHtmlString(_executor, instance, GetValue));
}
}
else
{
output.Content.AppendHtml(document.ToHtmlString(_executor, Models, GetValue));
}
if (!string.IsNullOrWhiteSpace(document.Scripts))
{
output.Content.AppendHtml("<script>").AppendHtml(document.Scripts).Append("</script>");
}
}
}
private void Render(TagHelperOutput output, TemplateDocument document)
{
Func(output, "render", "data", c =>
{
c.AppendHtml("var html = '';");
Func(output, "appender", "$model", ac => ac.AppendHtml(document.ToJsString(_executor)));
c.AppendHtml("appender(data);");
c.AppendHtml("$this.html(html);");
});
if (Models == null || Interval > 0)
{
Func(output, "ajax", "url", c =>
{
c.AppendHtml("$.ajax({url:url+'&_'+(+new Date())")
.AppendHtml(", dataType:'JSON', type:'GET', success:function(data){")
.AppendHtml("render(data);");
if (Callback != null)
{
c.AppendHtml(Callback).AppendHtml("(data);");
}
if (Interval > 0)
{//定时器
c.AppendHtml("setTimeout(function(){ajax(url);}")
.AppendHtml(",")
.AppendHtml((Interval * 1000).ToString())
.AppendHtml(");");
}
c.AppendHtml("}, error:function(r){$this.html(r.responseText);");
if (Interval > 0)
{//定时器
c.AppendHtml("setTimeout(function(){ajax(url);}")
.AppendHtml(",")
.AppendHtml((Interval * 1000).ToString())
.AppendHtml(");");
}
c.AppendHtml("}});");
});
}
switch (Models)
{
case string jscode when jscode.Trim().Length > 0:
output.Content.AppendHtml("render(");
output.Content.AppendHtml(jscode);
output.Content.AppendHtml(");");
break;
default:
output.Content.AppendHtml("render(");
output.Content.AppendHtml(JsonConvert.SerializeObject(Models));
output.Content.AppendHtml(");");
break;
case null:
output.Content.AppendHtml("ajax(");
var url = RemoteUrl;
if (url.IndexOf('?') == -1)
{
url += '?';
}
else
{
url += '&';
}
url += string.Join("&", Data.Select(x => $"{x.Key}={x.Value}"));
output.Content.AppendHtml("'").AppendHtml(url).AppendHtml("'");
output.Content.AppendHtml(");");
break;
}
}