Download Palm webOS by Mitch Allen PDF

By Mitch Allen

A notice from the writer and from O'Reilly Media approximately what this ebook does--and doesn't--do: Palm webOS is a new platform and represents a really diversified form of working procedure the place the internet runtime is used because the foundation for the UI and alertness version. Palm and O'Reilly felt that it was once very important to have a booklet on hand to aid builders get a easy realizing of the recent Palm platform on the time that the SDK was once published; this timing performed a tremendous function within the content material and constitution of the booklet. preferably this e-book may were a whole reference of the hot platform yet that wasn't attainable because the content material was once written whilst the software program SDK used to be being built by means of the Palm engineering crew. The publication does supply an entire evaluate of Palm webOS, a radical description of the applying version and provides information on many key layout options. There are descriptions and examples of UI widgets, prone, garage, notifications, dashboards and heritage purposes, serving as a superb advent yet no longer as a definitive resource. The ebook makes use of an easy information reader software to demonstrate the technical descriptions however the examples are usually not meant to function a cookbook instructional. skilled builders will be capable of use the examples to accumulate a operating software bankruptcy by means of bankruptcy yet others would possibly not locate the unfastened descriptions enough for recreating the applying unaided. over the years, those diversified wishes can be crammed by means of different books, yet meanwhile we are hoping that this e-book will serve a important position introducing builders to webOS and giving them a manner of having began with webOS program improvement. A moment printing of the publication will replace any unique insurance obsoleted by means of next Mojo SDK builds. For proprietors of the unique printing of the e-book, all of those updates are published at the "View/Submit Errata" hyperlink (please see left-hand column of this net page). thank you for knowing that ebook publishing and assurance of speedily relocating applied sciences can occasionally be an inexact technological know-how; we knew there'd be a necessity for a publication similar to Palm webOS: The Insider's consultant to constructing functions in JavaScript utilizing the Palm MojoT Framework, and there is definitely no larger individual to jot down that e-book that Mitch Allen; that acknowledged, we keep in mind that since it is this type of new working procedure and SDK, there could (and will remain) adjustments that at top cannot be documented and explored until eventually new printings of the books are published. meanwhile we'll be diligent in posting updates to this book's O'Reilly Media catalog page.Description this can be the professional advisor to development local JavaScript functions for Palm's new cellular working process, Palm® webOS™. Written through Palm's software program leader know-how officer in addition to the Palm webOS improvement staff, Palm webOS offers an entire instructional at the layout ideas, structure, UI, instruments, and prone essential to improve webOS applications-including the Mojo JavaScript framework and Palm's SDK. Palm webOS is designed to aid a quick and extraordinary consumer event utilizing tested internet criteria, so in case you are acquainted with HTML, CSS, and JavaScript, you are prepared to construct purposes for any webOS-based equipment, together with the Palm Pre. you will achieve services, bankruptcy by way of bankruptcy, as you construct a operating cellular software in the course of the process the booklet. you are going to additionally tips on how to expand current net apps to paintings with the recent new release of cellular phones.Get a radical assessment of the webOS platform and structure comprehend the severe techniques for program layout: what separates webOS from different net and cellular structures study the main points of Mojo's improvement instruments and SDK for construction and trying out cellular purposes research most sensible practices, very important issues, and guiding ideas for constructing with webOS and the Mojo framework

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Typically, a new scene is pushed after a user action, such as a tap on a UI widget and an old scene is popped when the user gestures back. As the terms imply, scenes are managed like a stack with new scenes pushed onto and off of the stack with the last scene on the stack visible in the view. Mojo manages the scene stack, but you will need to direct the action through provided functions and respond to UI events that trigger scene transitions. Mojo has a number of stage controller functions specifically designed to assist you, and are described in Chapter 2, Application Basics, and Chapter 3, Widgets.

This scene will use several of Mojo’s scene styles, including palm-pageheader, palm-page-header-wrapper, and title. The scene view As you learned earlier in the chapter, a scene is defined by an HTML view file and controlled by a JavaScript assistant. html. html. js, with the same base scene name. The JavaScript assistant will be discussed in the next section. The file structure is shown in Figure 2-3. Figure 2-3. A new scene view file Custom Application Structures If you find the conventional structure too constraining, you can customize it for your application.

Dashboard • Always display up-to-date data, which requires both pushing and pulling the latest data to and from the device so that the user is never looking at stale data when more recent data is available. This also means managing on-device caches so that when the device is out of coverage or otherwise offline, the user has access to the last data received. • Palm webOS is fast and simple to use. All features should be designed for instant response, easy for novices to learn and efficient for experienced users.

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