fune/browser/experiments/ExperimentsService.js

53 lines
1.5 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/. */
"use strict";
const {interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource:///modules/experiments/Experiments.jsm");
function ExperimentsService() {
}
ExperimentsService.prototype = {
_experiments: null,
_pendingManifestUpdate: false,
classID: Components.ID("{f7800463-3b97-47f9-9341-b7617e6d8d49}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsITimerCallback, Ci.nsIObserver]),
notify: function (timer) {
if (this._experiments) {
this._experiments.updateManifest();
} else {
this._pendingManifestUpdate = true;
}
},
observe: function (subject, topic, data) {
switch(topic) {
case "profile-after-change":
Services.obs.addObserver(this, "xpcom-shutdown", false);
this._experiments = Experiments.instance();
if (this._pendingManifestUpdate) {
this._experiments.updateManifest();
this._pendingManifestUpdate = false;
}
break;
case "xpcom-shutdown":
Services.obs.removeObserver(this, "xpcom-shutdown");
this._experiments.uninit();
break;
}
},
get experiments() {
return this._experiments;
},
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([ExperimentsService]);