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/* 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";
module.metadata = {
"stability": "unstable",
"engines": {
"Palemoon": "*",
"Firefox": "*",
"SeaMonkey": "*"
}
};
const { Cc, Ci, Cu } = require("chrome");
const { defer, reject } = require("../core/promise");
const FaviconService = Cc["@mozilla.org/browser/favicon-service;1"].
getService(Ci.nsIFaviconService);
const AsyncFavicons = FaviconService.QueryInterface(Ci.mozIAsyncFavicons);
const { isValidURI } = require("../url");
const { newURI, getURL } = require("../url/utils");
/**
* Takes an object of several possible types and
* returns a promise that resolves to the page's favicon URI.
* @param {String|Tab} object
* @param {Function} (callback)
* @returns {Promise}
*/
function getFavicon (object, callback) {
let url = getURL(object);
let deferred = defer();
if (url && isValidURI(url)) {
AsyncFavicons.getFaviconURLForPage(newURI(url), function (aURI) {
if (aURI && aURI.spec)
deferred.resolve(aURI.spec.toString());
else
deferred.reject(null);
});
} else {
deferred.reject(null);
}
if (callback) deferred.promise.then(callback, callback);
return deferred.promise;
}
exports.getFavicon = getFavicon;
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