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If no extension controls the settings, ExtensionSettings may not be initialized on startup. Fall back to the defaults in that case. Differential Revision: https://phabricator.services.mozilla.com/D21866 --HG-- extra : moz-landing-system : lando
95 lines
2.8 KiB
JavaScript
95 lines
2.8 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* globals ChromeUtils, Services */
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/* exported HomePage */
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"use strict";
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var EXPORTED_SYMBOLS = ["HomePage"];
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const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
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ChromeUtils.defineModuleGetter(this, "PrivateBrowsingUtils",
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"resource://gre/modules/PrivateBrowsingUtils.jsm");
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ChromeUtils.defineModuleGetter(this, "ExtensionSettingsStore",
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"resource://gre/modules/ExtensionSettingsStore.jsm");
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const kPrefName = "browser.startup.homepage";
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function getHomepagePref(useDefault) {
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let homePage;
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let prefs = Services.prefs;
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if (useDefault) {
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prefs = prefs.getDefaultBranch(null);
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}
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try {
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// Historically, this was a localizable pref, but default Firefox builds
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// don't use this.
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// Distributions and local customizations might still use this, so let's
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// keep it.
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homePage = prefs.getComplexValue(kPrefName,
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Ci.nsIPrefLocalizedString).data;
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} catch (ex) {}
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if (!homePage) {
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homePage = prefs.getStringPref(kPrefName);
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}
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// Apparently at some point users ended up with blank home pages somehow.
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// If that happens, reset the pref and read it again.
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if (!homePage && !useDefault) {
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Services.prefs.clearUserPref(kPrefName);
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homePage = getHomepagePref(true);
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}
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return homePage;
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}
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let HomePage = {
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get(aWindow) {
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let homePages = getHomepagePref();
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if (PrivateBrowsingUtils.permanentPrivateBrowsing ||
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(aWindow && PrivateBrowsingUtils.isWindowPrivate(aWindow))) {
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// If an extension controls the setting and does not have private
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// browsing permission, use the default setting.
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let extensionInfo;
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try {
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extensionInfo = ExtensionSettingsStore.getSetting("prefs", "homepage_override");
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} catch (e) {
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// ExtensionSettings may not be initialized if no extensions are enabled. If
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// we have some indication that an extension controls the homepage, return
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// the defaults instead.
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if (homePages.includes("moz-extension://")) {
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return this.getDefault();
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}
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}
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if (extensionInfo) {
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let policy = WebExtensionPolicy.getByID(extensionInfo.id);
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if (!policy || !policy.privateBrowsingAllowed) {
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return this.getDefault();
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}
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}
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}
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return homePages;
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},
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getDefault() {
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return getHomepagePref(true);
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},
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get overridden() {
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return Services.prefs.prefHasUserValue(kPrefName);
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},
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set(value) {
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Services.prefs.setStringPref(kPrefName, value);
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},
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reset() {
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Services.prefs.clearUserPref(kPrefName);
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},
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};
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