This Wrox Blox provides you the information you need to use the classes provided from Google. The core classes within Google Gears include Factory, Database, HttpRequest, LocalServer, Timer, and WorkerPool. This Wrox Blox shows how to determine when to use the different classes provided by Google Gears. The Factory allows you to instantiate instances of all of the other classes. The Database allows you to store browser based data on the client computer. The LocalServer provides a couple of approaches for storing content in an offline fashion. The WorkerPool makes it easy to do work in an asynchronous environment. The Timer allows you to execute a function on a set interval; and the HttpRequest allows you to create Web requests from within the browser. By tying all of the classes together, you’re able to create an offline experience that hasn’t been easily available until now.

All of the classes listed here are part of the 0.2 version of Google Gears. Additionally, it helps to know JavaScript before running the samples included in this Wrox Blox.

Usage Rights for Wiley Wrox Blox

Any Wrox Blox you purchase from this site will come with certain restrictions that allow Wiley to protect the copyrights of its products. After you purchase and download this title, you:

• Are entitled to three downloads
• Are entitled to make a backup copy of the file for your own use
• Are entitled to print the Wrox Blox for your own use
• Are entitled to make annotations and comments in the Wrox Blox file for your own use
• May not lend, sell or give the Wrox Blox to another user
• May not place the Wrox Blox file on a network or any file sharing service for use by anyone other than yourself or allow anyone other than yourself to access it
• May not copy the Wrox Blox file other than as allowed above
• May not copy, redistribute, or modify any portion of the Wrox Blox contents in any way without prior permission from Wiley

If you have any questions about these restrictions, you may contact Customer Care at (877) 762-2974 (8 a.m. - 5 p.m. EST, Monday - Friday). If you have any issues related to Technical Support, please contact us at 800-762-2974 (United States only) or 317-572-3994 (International) 8 a.m. - 8 p.m. EST, Monday - Friday).