phoxy/ENJS

<%
/* Purpose: render only if unknown
 * Usage:
 *   __this.CascadeDesign('snippets/singletone', obj);
 * Where object is:
 * {
 *   st: array of properties
 * }
 * st[0] - network resource to be threated as singletone
 * st[1] (optional) - data supplied with resource, if needed
 * How it done:
 *   It using deprecated phoxy.ForwardDownload to check is file available at runtime
 *   In other words its check is file was requested in current session
 *   If not, it request with deprecated DeferRender
 * Warning:
 *   This feature works wrong. Between request and actual download finish singletone
 *   threaded as unknown. So there could be multiply instances. Avoid to use this snippet.
 */

phoxy.Log(2, "snippets.singletone deprecated and probably would be removed in future versions");

if (phoxy.ForwardDownload(__this.st[0]))
  return;

__this.DeferRender(__this.st[0], __this.st[1])

%>