API after form submit in com.extjs.gxt.ui.client.widget.form.FormPanel
I am using com.extjs.gxt.ui.client.widget.form.FormPanel to upload a file.
after upload i need to do rpc call.
But how i know that form submit is placed file in server side.
I could n't find any method after form submission in com.extjs.gxt.ui.client.widget.form.FormPanel
But com.google.gwt.user.client.ui.FormPanel have onSubmitComplete API to call after form submission.
So in extjs Formpanel what is the API to call after submission
Please help me