This interface is used to receive contents of directory index listings
 from a protocol. They can then be transformed into an output format
 (such as rdf, html, etc)
[scriptable, uuid(fae4e9a8-1dd1-11b2-b53c-8f3aa1bbf8f5)]
interface nsIDirIndexListener : nsISupports

Methods

 Called for each directory entry

 @param request - the request
 @param ctxt - opaque parameter
 @param index - new index to add
void onIndexAvailable(in nsIRequest aRequest, in nsISupports aCtxt, in nsIDirIndex aIndex) 
 Called for each information line

 @param request - the request
 @param ctxt - opaque parameter
 @param info - new info to add
void onInformationAvailable(in nsIRequest aRequest, in nsISupports aCtxt, in AString aInfo)