52 lines
1.6 KiB
JavaScript
52 lines
1.6 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
"use strict";
|
|
|
|
const { Ci } = require("chrome");
|
|
const Services = require("Services");
|
|
|
|
/**
|
|
* Returns the `nsIDOMWindow` toplevel window for any child/inner window
|
|
*/
|
|
function getToplevelWindow(window) {
|
|
return window.QueryInterface(Ci.nsIInterfaceRequestor)
|
|
.getInterface(Ci.nsIWebNavigation)
|
|
.QueryInterface(Ci.nsIDocShellTreeItem)
|
|
.rootTreeItem
|
|
.QueryInterface(Ci.nsIInterfaceRequestor)
|
|
.getInterface(Ci.nsIDOMWindow);
|
|
}
|
|
exports.getToplevelWindow = getToplevelWindow;
|
|
|
|
function getDOMWindowUtils(window) {
|
|
return window.QueryInterface(Ci.nsIInterfaceRequestor)
|
|
.getInterface(Ci.nsIDOMWindowUtils);
|
|
}
|
|
exports.getDOMWindowUtils = getDOMWindowUtils;
|
|
|
|
/**
|
|
* Check if the given browser window has finished the startup.
|
|
* @params {nsIDOMWindow} window
|
|
*/
|
|
const isStartupFinished = (window) =>
|
|
window.gBrowserInit &&
|
|
window.gBrowserInit.delayedStartupFinished;
|
|
|
|
function startup(window) {
|
|
return new Promise(resolve => {
|
|
if (isStartupFinished(window)) {
|
|
resolve(window);
|
|
return;
|
|
}
|
|
Services.obs.addObserver(function listener({ subject }) {
|
|
if (subject === window) {
|
|
Services.obs.removeObserver(listener, "browser-delayed-startup-finished");
|
|
resolve(window);
|
|
}
|
|
}, "browser-delayed-startup-finished");
|
|
});
|
|
}
|
|
exports.startup = startup;
|