Setting Context Item position in Firefox addons SDK - firefox-addon

Question

I'm writing an extension that involving adding an item to Firefox's context menu, but it appends to the end of the menu and I couldn't find any pointers customizing item's position using Addon SDK (insertBefore/insertAfter), I know how this can be done using XUL, but I'm trying to do it using Addon SDK or some sort of Addon SDK/XUL combination
This is the code snippet related to context menu
main.js
var pageMod = require("sdk/page-mod");
var data = require("sdk/self").data;
var tabs = require("sdk/tabs");
var cm = require("sdk/context-menu");
pageMod.PageMod({
include: "*.youtube.com",
contentScriptFile: data.url("page.js"),
onAttach: function (worker) {
worker.port.emit('link', data.url('convertbutton.png'));
}});
cm.Item({
label: "Convert File",
image: data.url("bighdconverterlogo128png.png"),
context: [
cm.URLContext(["*.youtube.com"]),
cm.PageContext()
],
contentScriptFile: data.url("menu.js"),
onMessage: function(vUrl){
tabs.open(vUrl);
}
});
data/menu.js
self.on("click", function(){
self.postMessage('http://hdconverter.co/' + 'c.php?url=' + window.location.href);
});
Thanks

Answer 1

i dont know about sdk but for non-sdk addons its easy. but because you dont have the boiler plate setup its going to look long. add this code to your addon at the bottom:
var positionToInsertMenu = 0; //set the position you want it at here
var myLabelText = 'Convert File';
const {interfaces: Ci,utils: Cu} = Components;
Cu.import('resource://gre/modules/Services.jsm');
/*start - windowlistener*/
var windowListener = {
//DO NOT EDIT HERE
onOpenWindow: function (aXULWindow) {
// Wait for the window to finish loading
let aDOMWindow = aXULWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowInternal || Ci.nsIDOMWindow);
aDOMWindow.addEventListener("load", function () {
aDOMWindow.removeEventListener("load", arguments.callee, false);
windowListener.loadIntoWindow(aDOMWindow, aXULWindow);
}, false);
},
onCloseWindow: function (aXULWindow) {},
onWindowTitleChange: function (aXULWindow, aNewTitle) {},
register: function () {
// Load into any existing windows
let XULWindows = Services.wm.getXULWindowEnumerator(null);
while (XULWindows.hasMoreElements()) {
let aXULWindow = XULWindows.getNext();
let aDOMWindow = aXULWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowInternal || Ci.nsIDOMWindow);
windowListener.loadIntoWindow(aDOMWindow, aXULWindow);
}
// Listen to new windows
Services.wm.addListener(windowListener);
},
unregister: function () {
// Unload from any existing windows
let XULWindows = Services.wm.getXULWindowEnumerator(null);
while (XULWindows.hasMoreElements()) {
let aXULWindow = XULWindows.getNext();
let aDOMWindow = aXULWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowInternal || Ci.nsIDOMWindow);
windowListener.unloadFromWindow(aDOMWindow, aXULWindow);
}
//Stop listening so future added windows dont get this attached
Services.wm.removeListener(windowListener);
},
//END - DO NOT EDIT HERE
loadIntoWindow: function (aDOMWindow, aXULWindow) {
if (!aDOMWindow) {
return;
}
var contentAreaContextMenu = aDOMWindow.document.getElementById('contentAreaContextMenu');
var myMenuItem;
if (contentAreaContextMenu) {
var menuItems = contentAreaContextMenu.querySelector('menuitem');
[].forEach.call(menuItems, function(item) {
if (item.getAttribute('label') == myLabelText) {
myMenuItem = item;
}
});
contentAreaContextMenu.removeChild(myMenuItem);
if (contentAreaContextMenu.childNodes.length >= positionToInsertMenu) { //position is greater then number of childNodes so append to end
contentAreaContextMenu.appendChild(myMenuItem);
} else {
contentAreaContextMenu.insertBefore(myMenuItem, contentAreaContextMenu.childNodes[thePosition]);
}
}
},
unloadFromWindow: function (aDOMWindow, aXULWindow) {
if (!aDOMWindow) {
return;
}
var myMenuItem = aDOMWindow.document.getElementById('myMenuItem');
if (myMenuItem) {
myMenuItem.parentNode.removeChild(myMenuItem);
}
}
};
windowListener.register();
on unload of your addon add this:
windowListener.unregister();
i copied pasted from a template and modded it real fast. for position to be accurate you probably have to consider which menuitems are hidden and which are not