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toolkit/components/places/PlacesCategoriesStarter.js@6474c204b198 (annotated)

toolkit/components/places/PlacesCategoriesStarter.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0	2	* vim: sw=2 ts=2 sts=2 expandtab
michael@0	3	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	////////////////////////////////////////////////////////////////////////////////
michael@0	8	//// Constants
michael@0	9
michael@0	10	const Cc = Components.classes;
michael@0	11	const Ci = Components.interfaces;
michael@0	12	const Cu = Components.utils;
michael@0	13
michael@0	14	// Fired by TelemetryPing when async telemetry data should be collected.
michael@0	15	const TOPIC_GATHER_TELEMETRY = "gather-telemetry";
michael@0	16
michael@0	17	// Seconds between maintenance runs.
michael@0	18	const MAINTENANCE_INTERVAL_SECONDS = 7 * 86400;
michael@0	19
michael@0	20	////////////////////////////////////////////////////////////////////////////////
michael@0	21	//// Imports
michael@0	22
michael@0	23	Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0	24	Components.utils.import("resource://gre/modules/Services.jsm");
michael@0	25	Components.utils.import("resource://gre/modules/PlacesUtils.jsm");
michael@0	26	XPCOMUtils.defineLazyModuleGetter(this, "PlacesDBUtils",
michael@0	27	"resource://gre/modules/PlacesDBUtils.jsm");
michael@0	28
michael@0	29	/**
michael@0	30	* This component can be used as a starter for modules that have to run when
michael@0	31	* certain categories are invoked.
michael@0	32	*/
michael@0	33	function PlacesCategoriesStarter()
michael@0	34	{
michael@0	35	Services.obs.addObserver(this, TOPIC_GATHER_TELEMETRY, false);
michael@0	36	Services.obs.addObserver(this, PlacesUtils.TOPIC_SHUTDOWN, false);
michael@0	37
michael@0	38	// nsINavBookmarkObserver implementation.
michael@0	39	let notify = (function () {
michael@0	40	if (!this._notifiedBookmarksSvcReady) {
michael@0	41	// For perf reasons unregister from the category, since no further
michael@0	42	// notifications are needed.
michael@0	43	Cc["@mozilla.org/categorymanager;1"]
michael@0	44	.getService(Ci.nsICategoryManager)
michael@0	45	.deleteCategoryEntry("bookmarks-observer", this, false);
michael@0	46	// Directly notify PlacesUtils, to ensure it catches the notification.
michael@0	47	PlacesUtils.observe(null, "bookmarks-service-ready", null);
michael@0	48	}
michael@0	49	}).bind(this);
michael@0	50	[ "onItemAdded", "onItemRemoved", "onItemChanged", "onBeginUpdateBatch",
michael@0	51	"onEndUpdateBatch", "onItemVisited",
michael@0	52	"onItemMoved" ].forEach(function(aMethod) {
michael@0	53	this[aMethod] = notify;
michael@0	54	}, this);
michael@0	55	}
michael@0	56
michael@0	57	PlacesCategoriesStarter.prototype = {
michael@0	58	//////////////////////////////////////////////////////////////////////////////
michael@0	59	//// nsIObserver
michael@0	60
michael@0	61	observe: function PCS_observe(aSubject, aTopic, aData)
michael@0	62	{
michael@0	63	switch (aTopic) {
michael@0	64	case PlacesUtils.TOPIC_SHUTDOWN:
michael@0	65	Services.obs.removeObserver(this, PlacesUtils.TOPIC_SHUTDOWN);
michael@0	66	Services.obs.removeObserver(this, TOPIC_GATHER_TELEMETRY);
michael@0	67	let globalObj =
michael@0	68	Cu.getGlobalForObject(PlacesCategoriesStarter.prototype);
michael@0	69	let descriptor =
michael@0	70	Object.getOwnPropertyDescriptor(globalObj, "PlacesDBUtils");
michael@0	71	if (descriptor.value !== undefined) {
michael@0	72	PlacesDBUtils.shutdown();
michael@0	73	}
michael@0	74	break;
michael@0	75	case TOPIC_GATHER_TELEMETRY:
michael@0	76	PlacesDBUtils.telemetry();
michael@0	77	break;
michael@0	78	case "idle-daily":
michael@0	79	// Once a week run places.sqlite maintenance tasks.
michael@0	80	let lastMaintenance = 0;
michael@0	81	try {
michael@0	82	lastMaintenance =
michael@0	83	Services.prefs.getIntPref("places.database.lastMaintenance");
michael@0	84	} catch (ex) {}
michael@0	85	let nowSeconds = parseInt(Date.now() / 1000);
michael@0	86	if (lastMaintenance < nowSeconds - MAINTENANCE_INTERVAL_SECONDS) {
michael@0	87	PlacesDBUtils.maintenanceOnIdle();
michael@0	88	}
michael@0	89	break;
michael@0	90	default:
michael@0	91	throw new Error("Trying to handle an unknown category.");
michael@0	92	}
michael@0	93	},
michael@0	94
michael@0	95	//////////////////////////////////////////////////////////////////////////////
michael@0	96	//// nsISupports
michael@0	97
michael@0	98	classID: Components.ID("803938d5-e26d-4453-bf46-ad4b26e41114"),
michael@0	99
michael@0	100	_xpcom_factory: XPCOMUtils.generateSingletonFactory(PlacesCategoriesStarter),
michael@0	101
michael@0	102	QueryInterface: XPCOMUtils.generateQI([
michael@0	103	Ci.nsIObserver
michael@0	104	, Ci.nsINavBookmarkObserver
michael@0	105	])
michael@0	106	};
michael@0	107
michael@0	108	////////////////////////////////////////////////////////////////////////////////
michael@0	109	//// Module Registration
michael@0	110
michael@0	111	let components = [PlacesCategoriesStarter];
michael@0	112	this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);