115 lines
3.0 KiB
JavaScript
115 lines
3.0 KiB
JavaScript
/* global Services, Preferences, EventEmitter, XPCOMUtils */
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/* exported NewTabPrefsProvider */
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"use strict";
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this.EXPORTED_SYMBOLS = ["NewTabPrefsProvider"];
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const {interfaces: Ci, utils: Cu} = Components;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/Preferences.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyGetter(this, "EventEmitter", function() {
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const {EventEmitter} = Cu.import("resource://devtools/shared/event-emitter.js", {});
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return EventEmitter;
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});
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// Supported prefs and data type
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const gPrefsMap = new Map([
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["browser.newtabpage.remote", "bool"],
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["browser.newtabpage.remote.mode", "str"],
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["browser.newtabpage.remote.version", "str"],
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["browser.newtabpage.enabled", "bool"],
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["browser.newtabpage.enhanced", "bool"],
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["browser.newtabpage.introShown", "bool"],
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["browser.newtabpage.updateIntroShown", "bool"],
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["browser.newtabpage.pinned", "str"],
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["browser.newtabpage.blocked", "str"],
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["intl.locale.matchOS", "bool"],
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["general.useragent.locale", "localized"],
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["browser.search.hiddenOneOffs", "str"],
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]);
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// prefs that are important for the newtab page
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const gNewtabPagePrefs = new Set([
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"browser.newtabpage.enabled",
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"browser.newtabpage.enhanced",
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"browser.newtabpage.pinned",
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"browser.newtabpage.blocked",
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"browser.newtabpage.introShown",
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"browser.newtabpage.updateIntroShown",
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"browser.search.hiddenOneOffs",
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]);
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let PrefsProvider = function PrefsProvider() {
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EventEmitter.decorate(this);
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};
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PrefsProvider.prototype = {
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observe(subject, topic, data) { // jshint ignore:line
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if (topic === "nsPref:changed") {
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if (gPrefsMap.has(data)) {
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switch (gPrefsMap.get(data)) {
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case "bool":
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this.emit(data, Preferences.get(data, false));
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break;
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case "str":
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this.emit(data, Preferences.get(data, ""));
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break;
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case "localized":
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try {
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this.emit(data, Preferences.get(data, "", Ci.nsIPrefLocalizedString));
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} catch (e) {
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this.emit(data, Preferences.get(data, ""));
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}
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break;
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default:
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this.emit(data);
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break;
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}
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}
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} else {
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Cu.reportError(new Error("NewTabPrefsProvider observing unknown topic"));
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}
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},
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/*
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* Return the preferences that are important to the newtab page
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*/
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get newtabPagePrefs() {
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let results = {};
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for (let pref of gNewtabPagePrefs) {
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results[pref] = Preferences.get(pref, null);
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}
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return results;
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},
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get prefsMap() {
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return gPrefsMap;
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},
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init() {
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for (let pref of gPrefsMap.keys()) {
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Services.prefs.addObserver(pref, this, false);
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}
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},
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uninit() {
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for (let pref of gPrefsMap.keys()) {
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Services.prefs.removeObserver(pref, this, false);
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}
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}
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};
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/**
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* Singleton that serves as the default new tab pref provider for the grid.
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*/
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const gPrefs = new PrefsProvider();
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let NewTabPrefsProvider = {
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prefs: gPrefs,
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newtabPagePrefSet: gNewtabPagePrefs,
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};
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