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