July 2009
Intermediate to advanced
464 pages
12h 25m
English
Content preview from Palm webOSBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Mojo Application Framework
A webOS application is based on standard HTML, CSS, and JavaScript, but the application model is not like the web application model. Applications are run within the UI System Manager. The UI System Manager is an application runtime built on WebKit, an open source web browser engine, to render the display, assist with events, and handle JavaScript.
The webOS APIs (application programming interfaces) are delivered as a JavaScript framework, called the Mojo framework. Mojo includes common application-level functions, a suite of powerful UI widgets, access to local storage and various application, and cloud and system services. To build full-featured webOS applications, many developers will also leverage HTML 5 features such as video/audio tagging and database functions. Although not formally part of the framework, the Prototype JavaScript framework is bundled with Mojo to assist with event and DOM (Document Object Model) handling among many other great features.
The framework provides a specific structure for applications that is based on the Model-View-Controller (MVC) architectural pattern. This allows for better separation of business logic, data, and presentation. Following the conventions reduces complexity; each component of an application has a defined format and location that the framework knows how to handle by default.
You will get a more extensive overview of Mojo in Chapter 2, and you’ll get details on widgets, services, and styles starting in
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.