gecko-dev/browser/modules/HomePage.jsm

66 строки
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/. */
/* globals ChromeUtils, Services */
/* exported HomePage */
"use strict";
var EXPORTED_SYMBOLS = ["HomePage"];
ChromeUtils.import("resource://gre/modules/Services.jsm");
const kPrefName = "browser.startup.homepage";
function getHomepagePref(useDefault) {
let homePage;
let prefs = Services.prefs;
if (useDefault) {
prefs = prefs.getDefaultBranch(null);
}
try {
// Historically, this was a localizable pref, but default Firefox builds
// don't use this.
// Distributions and local customizations might still use this, so let's
// keep it.
homePage = prefs.getComplexValue(kPrefName,
Ci.nsIPrefLocalizedString).data;
} catch (ex) {}
if (!homePage) {
homePage = prefs.getStringPref(kPrefName);
}
// Apparently at some point users ended up with blank home pages somehow.
// If that happens, reset the pref and read it again.
if (!homePage && !useDefault) {
Services.prefs.clearUserPref(kPrefName);
homePage = getHomepagePref(true);
}
return homePage;
}
let HomePage = {
get() {
return getHomepagePref();
},
getDefault() {
return getHomepagePref(true);
},
get overridden() {
return Services.prefs.prefHasUserValue(kPrefName);
},
set(value) {
Services.prefs.setStringPref(kPrefName, value);
},
reset() {
Services.prefs.clearUserPref(kPrefName);
},
};