108 lines
3.7 KiB
JavaScript
108 lines
3.7 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
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* vim: sw=2 ts=2 sts=2 expandtab
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* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Constants
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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// Fired by TelemetryController when async telemetry data should be collected.
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const TOPIC_GATHER_TELEMETRY = "gather-telemetry";
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// Seconds between maintenance runs.
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const MAINTENANCE_INTERVAL_SECONDS = 7 * 86400;
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// Imports
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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Components.utils.import("resource://gre/modules/Services.jsm");
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Components.utils.import("resource://gre/modules/PlacesUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "PlacesDBUtils",
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"resource://gre/modules/PlacesDBUtils.jsm");
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/**
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* This component can be used as a starter for modules that have to run when
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* certain categories are invoked.
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*/
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function PlacesCategoriesStarter()
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{
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Services.obs.addObserver(this, TOPIC_GATHER_TELEMETRY, false);
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Services.obs.addObserver(this, PlacesUtils.TOPIC_SHUTDOWN, false);
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// nsINavBookmarkObserver implementation.
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let notify = () => {
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if (!this._notifiedBookmarksSvcReady) {
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// TODO (bug 1145424): for whatever reason, even if we remove this
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// component from the category (and thus from the category cache we use
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// to notify), we keep being notified.
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this._notifiedBookmarksSvcReady = true;
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// For perf reasons unregister from the category, since no further
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// notifications are needed.
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Cc["@mozilla.org/categorymanager;1"]
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.getService(Ci.nsICategoryManager)
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.deleteCategoryEntry("bookmark-observers", "PlacesCategoriesStarter", false);
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// Directly notify PlacesUtils, to ensure it catches the notification.
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PlacesUtils.observe(null, "bookmarks-service-ready", null);
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}
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};
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[ "onItemAdded", "onItemRemoved", "onItemChanged", "onBeginUpdateBatch",
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"onEndUpdateBatch", "onItemVisited", "onItemMoved"
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].forEach(aMethod => this[aMethod] = notify);
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}
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PlacesCategoriesStarter.prototype = {
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// nsIObserver
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observe: function PCS_observe(aSubject, aTopic, aData)
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{
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switch (aTopic) {
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case PlacesUtils.TOPIC_SHUTDOWN:
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Services.obs.removeObserver(this, PlacesUtils.TOPIC_SHUTDOWN);
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Services.obs.removeObserver(this, TOPIC_GATHER_TELEMETRY);
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let globalObj =
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Cu.getGlobalForObject(PlacesCategoriesStarter.prototype);
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let descriptor =
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Object.getOwnPropertyDescriptor(globalObj, "PlacesDBUtils");
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if (descriptor.value !== undefined) {
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PlacesDBUtils.shutdown();
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}
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break;
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case TOPIC_GATHER_TELEMETRY:
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PlacesDBUtils.telemetry();
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break;
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case "idle-daily":
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// Once a week run places.sqlite maintenance tasks.
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let lastMaintenance =
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Services.prefs.getIntPref("places.database.lastMaintenance", 0);
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let nowSeconds = parseInt(Date.now() / 1000);
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if (lastMaintenance < nowSeconds - MAINTENANCE_INTERVAL_SECONDS) {
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PlacesDBUtils.maintenanceOnIdle();
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}
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break;
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default:
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throw new Error("Trying to handle an unknown category.");
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}
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},
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// nsISupports
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classID: Components.ID("803938d5-e26d-4453-bf46-ad4b26e41114"),
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_xpcom_factory: XPCOMUtils.generateSingletonFactory(PlacesCategoriesStarter),
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIObserver
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, Ci.nsINavBookmarkObserver
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])
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};
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// Module Registration
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var components = [PlacesCategoriesStarter];
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);
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