Ext js添加javascript动作，看不懂，求解释。

Question

screen.refresh('temp_extra_params;poll_interval=15;process;AUTO-GENERATE-REPORT;options=report,GEF020|47|REQ,GENERATE-XML,message,Request received.:lf:It may take up to 20 seconds to produce the VAF Request which will be emailed to you.:lf:You can wait at this screen for the report to display.');!

Answer 1

不好意思，我是想在点击Print VAF Request时能够下载一个pdf的report，但是Ext Js代码看不懂，不知道在是调用哪个方法或数据才能生成pdf文件。