August 2011
Intermediate to advanced
546 pages
20h 53m
English
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The OpenSocial Gadget XML Specification
While Shindig and Partuza are tools for building an OpenSocial container, the gadget XML specification is a tool for building application gadgets to run within a container. This XML specification file contains a series of configuration settings and data that allows the container to load the application content and information.
A gadget XML file contains a few main nodes (or elements). The
root Module node contains
three child nodes, ModulePrefs, UserPref, and a series of Content nodes. ModulePrefsk
defines the characteristics (metadata) about the application,
UserPref allows gadgets to define
user-specific data, and the Content
nodes contain the code for the gadget views.
This is the standard format of a gadget XML file:
<?xml version="1.0" encoding="utf-8"?>
<Module>
<ModulePrefs ... />
<UserPref ... />
<Content ...>
Gadget Content
</Content>
</Module>In the sections that follow, we’ll explore the content of each node and the possible configurations for building out a gadget.
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