gecko-dev/toolkit/components/places/PlacesCategoriesStarter.js
2011-10-07 21:10:42 +02:00

117 lines
4.3 KiB
JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 sts=2 expandtab
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Places code.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Marco Bonardo <mak77@bonardo.net> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
////////////////////////////////////////////////////////////////////////////////
//// Constants
const Cc = Components.classes;
const Ci = Components.interfaces;
// Fired by TelemetryPing when async telemetry data should be collected.
const TOPIC_GATHER_TELEMETRY = "gather-telemetry";
// Seconds between maintenance runs.
const MAINTENANCE_INTERVAL_SECONDS = 7 * 86400;
////////////////////////////////////////////////////////////////////////////////
//// Imports
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/Services.jsm");
Components.utils.import("resource://gre/modules/PlacesUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "PlacesDBUtils",
"resource://gre/modules/PlacesDBUtils.jsm");
/**
* This component can be used as a starter for modules that have to run when
* certain categories are invoked.
*/
function PlacesCategoriesStarter()
{
Services.obs.addObserver(this, TOPIC_GATHER_TELEMETRY, false);
Services.obs.addObserver(this, PlacesUtils.TOPIC_SHUTDOWN, false);
}
PlacesCategoriesStarter.prototype = {
//////////////////////////////////////////////////////////////////////////////
//// nsIObserver
observe: function PCS_observe(aSubject, aTopic, aData)
{
switch (aTopic) {
case PlacesUtils.TOPIC_SHUTDOWN:
Services.obs.removeObserver(this, PlacesUtils.TOPIC_SHUTDOWN);
Services.obs.removeObserver(this, TOPIC_GATHER_TELEMETRY);
break;
case TOPIC_GATHER_TELEMETRY:
PlacesDBUtils.telemetry();
break;
case "idle-daily":
// Once a week run places.sqlite maintenance tasks.
let lastMaintenance = 0;
try {
lastMaintenance =
Services.prefs.getIntPref("places.database.lastMaintenance");
} catch (ex) {}
let nowSeconds = parseInt(Date.now() / 1000);
if (lastMaintenance < nowSeconds - MAINTENANCE_INTERVAL_SECONDS) {
PlacesDBUtils.maintenanceOnIdle();
}
break;
default:
throw new Error("Trying to handle an unknown category.");
}
},
//////////////////////////////////////////////////////////////////////////////
//// nsISupports
classID: Components.ID("803938d5-e26d-4453-bf46-ad4b26e41114"),
QueryInterface: XPCOMUtils.generateQI([
Ci.nsIObserver
])
};
////////////////////////////////////////////////////////////////////////////////
//// Module Registration
let components = [PlacesCategoriesStarter];
var NSGetFactory = XPCOMUtils.generateNSGetFactory(components);