javascript - How can I emit message in panel's onMessage method? -

i meet problem firefox extension development using addon builder when emit message in panel's onmessage() method. , error info "self not defined".my code this:

in main.js

var savesubmittedpanel = require("sdk/panel").panel({   width: 322,   height: 427,   contenturl: data.url("savesubmitted.html"),   include:["http://*/*","https://*/*"],   contentscriptfile: [ data.url("js/savesubmitted.js")],   onmessage: function(messagedata) {       switch(messagedata.type) {       case 'get.submittedid':         self.port.emit("response.get.submittedid",submittedidentity);         break;       case 'add.identity':         addidentitytolist(messagedata.identity);         notifyupdatedidentities();         self.port.emit("response.add.identity")         break;       }   }            }); 

in js/savesubmitted.js

self.postmessage({type:"get.submittedid"});     self.port.on("response.get.submittedid",function(response){         //do     }); 

all these code write coverting chrome extension api. code in chrome extension that:

in content script:

chrome.extension.sendmessage({type : "get.submittedid"}, function(response) {         pageidentitysave=response;         showsaveidentitytab();     }); 

in background.js:

chrome.extension.onmessage.addlistener(function(message, sender, sendresponse){             console.log("background.js: " + "received message: "+message.type+" tab: "+sender.tab.id);                  if(message.type == "get.submittedid") {             sendresponse(submittedidentity);         } 

so,what's wrong? thanks.

in main.js, use savesubmittedpanel.port.emit instead of self.port.emit.

see also: communicating using "port".